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Fanconi Anemia

Synonym: Fanconi Pancytopenia

, MD and , MD, MPH.

Author Information and Affiliations

Initial Posting: ; Last Update: January 15, 2026.

Estimated reading time: 1 hour, 14 minutes

Summary

Clinical characteristics.

Fanconi anemia (FA) is characterized by physical abnormalities, bone marrow failure, and increased risk for malignancy. Characteristic physical abnormalities, present in approximately 75% of affected individuals, include one or more of the following: growth deficiency, abnormal skin pigmentation, skeletal malformations of the upper and/or lower limbs, microcephaly, genitourinary tract anomalies, and ocular manifestations. Endocrine disorders (hypothyroidism, diabetes / impaired glucose tolerance), hearing loss, developmental delay, congenital heart defects, and gastrointestinal malformations are also more common in those with FA. Progressive bone marrow failure with pancytopenia typically presents in the first decade, often initially with thrombocytopenia or leukopenia. The incidence of myelodysplastic syndrome (MDS) or acute myeloid leukemia (AML) is 35% by age 40 years. Solid tumors – particularly of the head and neck, skin, and genitourinary tract – are more common in individuals with FA.

Diagnosis/testing.

The diagnosis of FA is established in a proband with increased chromosome breakage and radial forms on cytogenetic testing of lymphocytes with diepoxybutane (DEB) and mitomycin C (MMC) and/or one of the following identified on molecular genetic testing: biallelic pathogenic variants in one of the 21 genes known to cause autosomal recessive FA; a heterozygous pathogenic variant in RAD51 known to cause autosomal dominant FA; or a hemizygous pathogenic variant in FANCB known to cause X-linked FA.

Management.

Targeted therapies: Oral androgens (e.g., oxymetholone, danazol) may transiently improve red blood cell and platelet counts in approximately 50% of individuals with FA. Granulocyte colony-stimulating factor improves the neutrophil count in some individuals. Hematopoietic stem cell transplantation (HSCT) is the only curative therapy for the hematologic manifestations of FA, but the non-hematologic manifestations remain, including a high risk for solid tumors, which may be increased following HSCT. All these therapies have potential significant toxicity.

Treatment of manifestations: Treatment of growth deficiency, limb anomalies, other orthopedic manifestations, kidney malformations, genital anomalies, hypothyroidism, diabetes, ocular anomalies, hearing loss, and cardiac anomalies as recommended by the subspecialty care provider. Early intervention for developmental delays; individualized education plan for school-age children; speech, occupational, and physical therapy as needed. Supplemental feeding as needed by nasogastric tube or gastrostomy tube. Treatment of bone marrow failure / MDS / AML through a center with experience in FA; early detection and surgical removal for solid tumors; human papilloma virus vaccination to reduce the risk for gynecologic cancer in females and reduce the risk of oral cancer in all individuals; liberal use of sunscreen and rash guards; treatment of skin cancer per dermatologist in coordination with multidisciplinary experts in FA; social work and care coordination as needed.

Surveillance: Clinical assessment of growth, feeding, nutrition, spine, and ocular issues at each visit throughout childhood. Annual ophthalmology examination; assessment of pubertal stage and hormone levels at puberty and every two years until puberty is complete; annual evaluation with endocrinologist including TSH, free T4, 25-hydroxyvitamin D, two-hour glucose tolerance testing, and measurement of insulin concentration; follow-up hearing evaluation if exposed to ototoxic drugs; annual developmental assessment throughout childhood; blood counts every three to four months or as needed; bone marrow aspirate and biopsy to evaluate morphology and cellularity; FISH and cytogenetics to evaluate for emergence of a malignant clone at least annually after age two years; liver function tests every three to six months and liver ultrasound every six to twelve months in those receiving androgen therapy; gynecologic assessment for genital lesions annually beginning at age 13 years; vulvo-vaginal examinations and Pap smear annually beginning at age 18 years or with onset of sexual activity; oral examinations for tumors every six months beginning at age nine to ten years; annual nasolaryngoscopy beginning at age ten years; dermatology evaluation every six to 12 months; annual abdominal ultrasound and brain MRI in those with BRCA2-related FA. Additional cancer surveillance for individuals with BRCA1-, BRCA2-, BRIP1-, PALB2-, and RAD51C-related FA per National Comprehensive Cancer Network (NCCN) screening guidelines.

Agents/circumstances to avoid: Transfusions of red blood cells or platelets for persons who are candidates for HSCT; family members as blood donors if HSCT is being considered; blood products that are not filtered (leuko-depleted) or irradiated; toxic agents that have been implicated in tumorigenesis; excessive sun exposure; unsafe sex practices, which increase the risk of HPV-associated malignancy. Radiographic studies solely for the purpose of surveillance (i.e., in the absence of clinical indications) should be minimized.

Evaluation of relatives at risk: Molecular genetic testing (if the family-specific pathogenic variant[s] are known) or DEB/MMC cytogenetic testing of all sibs of a proband (and all at-risk family members of an individual with autosomal dominant [RAD51-related] or X-linked [FANCB-related] FA) for early diagnosis, treatment, and monitoring for physical abnormalities, bone marrow failure, and related cancers.

Genetic counseling.

FA is inherited in an autosomal recessive manner, an autosomal dominant manner (RAD51-related FA), or an X-linked manner (FANCB-related FA).

Autosomal recessive FA: If both parents are known to be heterozygous for an autosomal recessive FA-related pathogenic variant, each sib of an affected individual has at conception a 25% chance of inheriting both pathogenic variants and being affected, a 50% chance of inheriting one pathogenic variant and being heterozygous, and a 25% chance of inheriting neither of the familial FA-related pathogenic variants. Heterozygotes are not at risk for autosomal recessive FA. However, heterozygous pathogenic variants in a subset of FA-related genes (e.g., BRCA1, BRCA2, PALB2, BRIP1, and RAD51C) are associated with an increased risk for breast and other cancers. Heterozygote testing for at-risk relatives requires prior identification of the FA-related pathogenic variants in the family.

Autosomal dominant FA: Given that all probands with RAD51-related FA reported to date whose parents have undergone molecular genetic testing have the disorder as a result of a de novo RAD51 pathogenic variant, the risk to other family members is presumed to be low.

X-linked FA: The risk to sibs of a male proband depends on the genetic status of the mother. If the mother of the proband has a FANCB pathogenic variant, the chance of the mother transmitting it in each pregnancy is 50%. Male sibs who inherit the pathogenic variant will be affected. Female sibs who inherit the pathogenic variant will be heterozygotes and will usually not be affected. Heterozygote testing for at-risk female relatives requires prior identification of the FANCB pathogenic variant in the family.

Molecular genetic prenatal testing and preimplantation genetic testing are possible if the pathogenic variant(s) in the family are known.

Diagnosis

Recommendations for Fanconi anemia (FA) diagnostic criteria were agreed upon at a 2014 consensus conference and updated in 2020 (see Fanconi Anemia Clinical Care Guidelines). These guidelines have transitioned to a web-based document with interval updates of individual chapters as needed to remain current with field advances.

Suggestive Findings

FA should be suspected in individuals with the following clinical, laboratory, and pathology findings and/or family history.

Clinical findings (in ~75% of affected persons)

  • Prenatal and/or postnatal short stature
  • Abnormal skin pigmentation (e.g., café au lait macules, hypopigmentation)
  • Skeletal malformations (e.g., hypoplastic thumb, hypoplastic radius)
  • Microcephaly
  • Genitourinary tract anomalies
  • Ocular manifestations
  • Otic anomalies / hearing loss

Note: A VACTERL-H (vertebral, anal, cardiac, tracheoesophageal fistula, renal, limb anomalies, hydrocephalus) phenotype is reported in 12% of individuals with FA; a PHENOS (skin pigmentation, small head, small eyes, nervous system, otic anomalies, short stature) phenotype is reported in 9% of individuals with FA [Fiesco-Roa et al 2019].

Laboratory findings

  • Macrocytosis
  • Increased fetal hemoglobin (often precedes anemia)
  • Cytopenia (especially thrombocytopenia, leukopenia, and neutropenia)

Pathology findings

  • Progressive bone marrow failure
  • Adult-onset aplastic anemia
  • Myelodysplastic syndrome (MDS)
  • Acute myelogenous leukemia (AML)
  • Early-onset solid tumors (e.g., squamous cell carcinomas of the head and neck, esophagus, and vulva; cervical cancer; liver tumors)
  • Inordinate toxicities from chemotherapy or radiation

Family history may be consistent with autosomal recessive inheritance (e.g., affected sibs and/or parental consanguinity), de novo RAD51 pathogenic variants, or X-linked inheritance (FANCB-FA). Absence of a known family history does not preclude the diagnosis.

Establishing the Diagnosis

The diagnosis of FA is established in a proband with either of the following:

Note: (1) Per American College of Medical Genetics and Genomics / Association for Molecular Pathology variant interpretation guidelines, the terms "pathogenic variant" and "likely pathogenic variant" are synonymous in a clinical setting, meaning that both are considered diagnostic and can be used for clinical decision making [Richards et al 2015]. Reference to "pathogenic variants" in this GeneReview is understood to include likely pathogenic variants. (2) The identification of variant(s) of uncertain significance cannot be used to confirm or rule out the diagnosis.

Molecular genetic testing approaches can include a combination of gene-targeted testing (single gene testing, multigene panel) and comprehensive genomic testing (exome sequencing, genome sequencing). Gene-targeted testing requires that the clinician determine which gene(s) are likely involved (see Option 1), whereas comprehensive genomic testing does not (see Option 2).

Option 1

Single-gene testing. Sequence analysis of FANCA can be performed first to detect missense, nonsense, and splice site variants and small intragenic deletions/insertions. Note: Depending on the sequencing method used, single-exon, multiexon, or whole-gene deletions/duplications may not be detected. If only one or no variant is detected by the sequencing method used, the next step is to perform gene-targeted deletion/duplication analysis to detect exon and whole-gene deletions or duplications.

A multigene panel that includes the genes in Table 1 and other genes of interest (see Differential Diagnosis) may be considered to identify the genetic cause of the condition while limiting identification of pathogenic variants and variants of uncertain significance in genes that do not explain the underlying phenotype. Note: (1) The genes included in the panel and the diagnostic sensitivity of the testing used for each gene vary by laboratory and are likely to change over time. (2) Some multigene panels may include genes not associated with the condition discussed in this GeneReview. (3) In some laboratories, panel options may include a custom laboratory-designed panel and/or custom phenotype-focused exome analysis that includes genes specified by the clinician. (4) Methods used in a panel may include sequence analysis, deletion/duplication analysis, and/or other non-sequencing-based tests.

For an introduction to multigene panels click here. More detailed information for clinicians ordering genetic tests can be found here.

Option 2

Comprehensive genomic testing does not require the clinician to determine which gene is likely involved. Exome sequencing is most commonly used; genome sequencing is also possible and necessary to identify deep intronic variants.

For an introduction to comprehensive genomic testing click here. More detailed information for clinicians ordering genomic testing can be found here.

Table 1.

Fanconi Anemia: Molecular Genetic Testing

Gene 1, 2Complementation Group 3Proportion of FA Attributed to Pathogenic Variants in Gene 4Proportion of Pathogenic Variants 5 Identified by Method
Sequence analysis 6Gene-targeted deletion/duplication analysis 7
BRCA1 FA-S<1%>99%None reported
BRCA2 FA-D12%>99%1 reported 8
BRIP1 FA-J2%>99%None reported
ERCC4 FA-Q<1%>99%None reported
FAAP100 FA-X3 families 9>99%None reported
FANCA FA-A60%-70%~60%~40%
FANCB FA-B2%~70%~30%
FANCC FA-C14%>90%<10%
FANCD2 FA-D23%<90%>10%
FANCE FA-E3%>99%None reported
FANCF FA-F2%~85%~15%
FANCG (XRCC9)FA-G10%>99%None reported
FANCI FA-I1%>95%<5%
FANCL FA-L<1%>90%<10%
FANCM 10FA-M<1%~75%1 reported
MAD2L2
(REV7)
FA-V1 reported>99%None reported
PALB2 FA-N<1%>95%2 reported 11
RAD51 FA-R5 reported>99%None reported
RAD51C FA-O<1%>99%None reported
RFWD3 FA-W2 reported 12>99%None reported
SLX4 FA-P<1%>90%1 reported 13
UBE2T FA-T<1%<50%>50%
XRCC2 FA-U1 reported>99%None reported
UnknownNA<5%

FA = Fanconi anemia; NA = not applicable

1.

Genes are listed in alphabetic order.

2.
3.

Prior to identification of the genes, complementation groups were defined based on somatic cell-based methods. While complementation analysis testing has been supplanted by multigene panels, this terminology continues to be used in some contexts.

4.

Data derived from the subscription-based professional view of Human Gene Mutation Database [Stenson et al 2020]

5.

See Molecular Genetics for information on pathogenic variants detected in these genes.

6.

Sequence analysis detects variants that are benign, likely benign, of uncertain significance, likely pathogenic, or pathogenic. Variants may include missense, nonsense, and splice site variants small intragenic deletions/insertions; typically, exon or whole-gene deletions/duplications are not detected. For issues to consider in interpretation of sequence analysis results, click here.

7.

Gene-targeted deletion/duplication analysis detects intragenic deletions or duplications. Methods used may include a range of techniques such as quantitative PCR, long-range PCR, multiplex ligation-dependent probe amplification (MLPA), and a gene-targeted microarray designed to detect single-exon deletions or duplications. Exome and genome sequencing may be able to detect deletions/duplications using breakpoint detection or read depth; however, sensitivity can be lower than gene-targeted deletion/duplication analysis.

8.
9.
10.

Although the majority of individuals with biallelic FANCM pathogenic variants have infertility and increased risk for early-onset cancer, a small number of individuals have overlapping features of FA including growth deficiency, microcephaly, cytopenia, chromosome fragility, and chemotoxicity. Characterization of these features as Fanconi anemia, Fanconi anemia-like or a distinct autosomal recessive disorder is under debate [Figlioli et al 2025].

11.
12.
13.

Clinical Characteristics

Clinical Description

The primary clinical features of Fanconi anemia (FA) include physical abnormalities, progressive bone marrow failure manifest as pancytopenia, and cancer susceptibility; however, some individuals with FA have neither physical abnormalities nor bone marrow failure.

Table 2.

Fanconi Anemia: Frequency of Select Features

Feature% of Persons w/Feature
Growth deficiency65%
Abnormal skin pigmentation40%
Skeletal malformations of upper limbs40%
Skeletal malformations of lower limbs5%
Microcephaly20%-25%
Kidney / urinary tract anomalies20%-25%
Anomalies of internal & external genitaliaMales: 25%
Females: 2%
Endocrine disorders50%-75%
Ocular manifestations15%
Hearing loss10%
Developmental delay / intellectual disability10%
Congenital heart defect6%
Gastrointestinal anomalies5%

Percentages are calculated from the literature from 1927 to 2024 [Fiesco-Roa et al 2019, Hoover et al 2024]. Frequencies are approximate, since many reports did not mention physical descriptions.

Characteristic Physical Features

Characteristic physical features / congenital anomalies occur in approximately 75% of individuals with FA.

Growth deficiency. Approximately 40% of affected individuals are born small for gestational age [Giri et al 2018]. An additional 25% display growth deficiency over time. Height tends to be more consistently reported as below the reference population, with the average height in children 2.2 standard deviations (SD) below the mean and 2.0 SD below the mean in adults [Wajnrajch et al 2001, Giri et al 2007, Rose et al 2012]. Linear growth deficiencies have been attributed to combinations of endocrinopathies (growth hormone deficiency, hypogonadism, hypothyroidism), nutritional deficiencies, and poor bone health [Wajnrajch et al 2001, Giri et al 2007, Rose et al 2012, Petryk et al 2015, Koo et al 2023, Barbus et al 2024]. Endocrinopathy and skeletal impacts of treatment with hematopoietic stem cell transplantation (HSCT) can also impact linear growth if administered prior to closure of growth plates [Barnum et al 2016]. FA-specific growth charts by biologic sex have been developed [Barbus et al 2024].

Abnormal skin pigmentation is a common feature in individuals with FA. Café au lait macules and hypopigmented macules can be present at birth or develop over time, with café au lait macules typically developing prior to puberty. Skinfold freckle-like hyperpigmented macules arise around puberty [Giampietro et al 1993, Fiesco-Roa et al 2019, Kesici et al 2019, Ruggiero et al 2022, Altintas et al 2023].

Skeletal malformations of the upper limbs account for 70% of all skeletal anomalies in FA and can be unilateral or bilateral [Shimamura & Alter 2010].

  • Thumbs (35%). Absent, hypoplastic, bifid, duplicated, triphalangeal, long, and/or proximally placed
  • Radii (7%). Absent or hypoplastic (only with abnormal thumbs), absent or weak pulse
  • Hands (5%). Flat thenar eminence, absent first metacarpal, clinodactyly, and/or preaxial polydactyly
  • Ulnae (1%). Dysplastic and/or short

Skeletal malformations of lower limbs include the following:

  • Leg length discrepancy, syndactyly, polydactyly, short toes, and/or club feet
  • Congenital hip dislocation

Microcephaly (head circumference more than two 2 SD below the mean for age) can be present at birth or become apparent over time.

Genitourinary tract anomalies include the following:

  • Kidney anomalies (25%). Horseshoe, ectopic, pelvic, hypoplastic, dysplastic, or absent kidney; hydronephrosis or hydroureter
  • Males (25%). Hypospadias, micropenis, cryptorchidism, anorchia, hypo- or azoospermia, reduced fertility
  • Females (2%). Bicornuate or uterus malposition, small ovaries
    Note: Pregnancy is possible in individuals with FA, whether or not they have undergone HSCT [Alter et al 1991, Altintas et al 2023].

Ocular manifestations include microphthalmia, cataracts, astigmatism, strabismus, epicanthal folds, hypotelorism, hypertelorism, and ptosis.

Other Common Clinical Features

Endocrine disorders. Endocrinopathies can develop in childhood in individuals with FA, and surveillance is recommended annually from time of diagnosis (see Fanconi Cancer Foundation Clinical Care Guidelines). Hypothyroidism (30%-60%), diabetes (8%-10%), hyperglycemia / impaired glucose tolerance (25%-70%), and insulin resistance have been reported [Petryk et al 2015]. Growth hormone deficiency and osteoporosis are also described. Endocrinopathies can also be caused or exacerbated by HSCT [Altintas et al 2023].

Hearing loss, when present, is usually conductive secondary to middle-ear bony anomalies with or without additional ear anomalies (e.g., dysplastic auricle, narrow ear canal, abnormal pinna). Sensorineural hearing loss has rarely been described. Hearing loss can be present at birth and is typically mild; however, hearing loss can be more severe, impact speech-language development, and benefit from amplification devices or technology. Hearing loss is not believed to be progressive in FA, though it can be impacted by infection or exposure to ototoxic medications [Kalejaiye et al 2016].

Developmental delay and/or intellectual disability is seen in 10% of individuals with FA but is not well described. Co-occurrence of hearing loss and microcephaly may be associated with a higher risk of developmental delay and/or intellectual disability. Most individuals (4/5) with RAD51-related FA are reported to have variable developmental delay, including speech and language delays, motor delays, and intellectual disability (mild to severe) [Altintas et al 2025].

Congenital heart defects and vascular anomalies include Patent ductus arteriosus, atrial septal defect, ventricular septal defect, coarctation of the aorta, truncus arteriosus, and situs inversus.

Gastrointestinal manifestations include esophageal, duodenal, or jejunal atresia, imperforate anus, tracheoesophageal fistula, annular pancreas, and malrotation.

Central nervous system findings have been seen on brain imaging (3%) and include small pituitary, pituitary stalk interruption syndrome, absent corpus callosum, cerebellar hypoplasia, hydrocephalus, and dilated ventricles [Johnson-Tesch et al 2017]. The progressive cerebrovascular anomaly of moyamoya disease has been described rarely in individuals with FA [Cohen et al 1980, Pavlakis et al 1995, Al-Hawsawi et al 2015, Zhu et al 2022, D'Incan 2025].

Other skeletal manifestations

  • Facial features (2%). Triangular face shape, micrognathia, mid-face hypoplasia
  • Spine anomalies (2%). Spina bifida, scoliosis, hemivertebrae, rib anomalies, coccygeal aplasia
  • Neck anomalies (1%). Sprengel deformity, Klippel-Feil anomaly, short or webbed neck, low hairline

Immune dysfunction. While not systematically studied to provide estimates of incidence, case series have identified reduced numbers and function of NK cells and reduced numbers of B cells [Korthof et al 2013, Myers et al 2017]. Increased risk for opportunistic infection or T-cell defects has not been described.

Bone Marrow Failure

The age of onset of bone marrow failure is highly variable, even among sibs. An analysis of 754 individuals enrolled in the International Fanconi Anemia Registry (IFAR) with pathogenic variants in FANCA, FANCC, and FANCG identified an average age of onset of bone marrow failure of 7.6 years [Kutler et al 2003]. Rarely, bone marrow failure can present in infants and small children [Shimamura & Alter 2010]. Individuals with FANCG- and FANCC-related FA have higher incidence and earlier presentation of bone marrow failure. For all forms of FA, the risk of developing any hematologic abnormality is 90% by age 40 years [Kutler et al 2003]. Registry data across the world are consistent in incidence and age of onset, even in more recent years [Risitano et al 2016, Altintas et al 2023].

  • Thrombocytopenia or leukopenia usually precede anemia. These are commonly associated with macrocytosis and elevated fetal hemoglobin.
  • Pancytopenia generally worsens over time.
  • Sweet syndrome (neutrophilic skin infiltration) has been documented in 12 individuals with FA and was associated with progression of hematologic disease in eight individuals (67%), occasionally appearing prior to the diagnosis of FA [Douglass et al 1989, McDermott et al 2001, Giulino et al 2011, Cerejeira et al 2022].
  • The severity of bone marrow failure can be classified by the degree of cytopenia(s) (see Table 3). Importantly, to meet these criteria for bone marrow failure, the cytopenias must be persistent and unexplained by other causes.

Table 3.

Fanconi Anemia: Severity of Bone Marrow Failure

Hematopoietic Cell AffectedMildModerateSevere
Absolute neutrophil count<1,500/mm3<1,000/mm3<500/mm3
Platelet count50,000-150,000/mm3<50,000/mm3<30,000/mm3
Hemoglobin level≥8 g/dL<8 g/dL<8 g/dL

Cancer Susceptibility

Myeloid malignancy. Genome instability in FA commonly results in clonal hematopoiesis that may precede development of myelodysplastic syndrome (MDS) or acute myeloid leukemia (AML), though clonal hematopoiesis is not always a feature in aberrant myelopoiesis. Gains of chromosome 1q or 3q or deletions of chromosome 7 (up to full monosomy 7) predominate [Mehta et al 2010, Quentin et al 2011, Meyer et al 2012]. Chromosome 7 abnormalities can drive development of MDS and/or AML, as can gains of 3q when accompanied by other chromosomal alterations, and these chromosomal findings should prompt consideration of HSCT [Cioc et al 2010, Mehta et al 2010, Peffault de Latour & Soulier 2016]. Lower-risk clones demonstrating gains of 1q, loss of 20q, or loss of 6p should prompt close surveillance for resolution or evolution.

Recent longitudinal multiomic analysis of bone marrow and skin samples from 62 individuals with FA showed clonal expansion over time, with some developing MDS and/or AML [Sebert et al 2023]. Approximately half the cohort had 1q gains with duplication of MDM4, which encodes a negative regulator of tumor suppressor p53. MDM4 inhibition of p53 likely promoted leukemogenesis over apoptosis or bone marrow failure. Loss of tumor suppressor RUNX1 was also commonly acquired during clonal hematopoiesis progression in FA, often following chromosome 1, 3, or 7 abnormalities. Gains of chromosome 3q were shown to include the oncogene MECOM, driving leukemogenesis in some individuals.

The relative risk for MDS is approximately 6,000-fold and AML approximately 700-fold in individuals with FA compared to the general population [Alter 2014]. Risk for MDS and AML in FA must consider the competing risk of bone marrow failure. In competing risk analyses from IFAR, the National Cancer Institute (NCI) cohort, and the German FA registry, the cumulative incidence of MDS or AML by age 40 years was approximately 35% [Kutler et al 2003, Rosenberg et al 2008, Alter et al 2018]. Individuals with BRCA2-related FA have a uniquely high risk for AML in childhood, with an incidence of 80% by age ten years. However, hypomorphic BRCA2 variants are associated with onset of malignancy at a later age or not at all. BRCA2 pathogenic variants c.631+1G>A and c.631+2T>G are particularly deleterious, with myeloid malignancy arising before age three years [Alter 2014].

Solid tumors may be the first manifestation of FA in individuals who have no birth defects and have not experienced bone marrow failure.

  • Head and neck squamous cell carcinomas (HNSCCs) are the most common solid tumor in individuals with FA. The incidence is 500- to 1,000-fold higher than in the general population [Rosenberg et al 2003, Rosenberg et al 2005, Alter et al 2018]. HSCT conditioning chemotherapy and/or radiation, mucositis, and graft-vs-host disease may contribute to higher rates of HNSCCs [Socié et al 1998, Ricci et al 2025]. FA-related HNSCCs show distinct differences from HNSCCs seen in the general population. FA-related HNSCCs:
    • Occur at an earlier age (age 20-40 years) than in the general population (age 60-70 years);
    • Most commonly occur in the oral cavity;
    • Present at an advanced stage;
    • Respond poorly to therapy.
  • Individuals with FA are at increased risk for second primary cancers of the skin and genitourinary tract. The pattern of second primaries resembles that observed in HPV-associated HNSCCs in the general population [Kutler et al 2016].
  • Androgen therapy can contribute to risk of liver adenomas and progression to hepatocellular carcinoma [Velazquez & Alter 2004, Ozenne et al 2008].
  • BRCA2- and PALB2-related FA due to complete loss-of-function pathogenic variants are associated with an increased risk for brain tumors, kidney tumors, neuroblastoma, and breast cancer compared to other causes of FA. Note: Hypomorphic BRCA2 pathogenic variants are associated with a lower risk of malignancy than BRCA2 loss-of-function pathogenic variants.

Pathophysiology. Bone marrow failure in FA results from attrition of hematopoietic stem cells by apoptosis in response to DNA damage that FA cells lack the ability to adequately resolve. Contributing factors identified to date include DNA damage induced by oxidative stress and dysregulated protein homeostasis and unfolded protein toxicity converging on premature hematopoietic stem cell exhaustion [Du et al 2008, Rodríguez et al 2021, Kovuru et al 2024]. Activation of the tumor suppressor p53 pathway in the abnormal DNA damage response of FA provides protection against malignant transformation in hematopoietic cells, instead contributing to expedited stem cell attrition and bone marrow failure [Ceccaldi et al 2012].

Phenotype Correlations by Gene

BRCA2 pathogenic variants cause a near-universal risk of malignancy in early childhood (97% by age six years). Acute leukemia, often but not always AML, occurs in 80% by age ten years [Alter 2014]. Solid tumors of embryonic origin, including brain tumors, Wilms tumor, and neuroblastoma, are also common in individuals with BRCA2-related FA (affecting 10%-33%) and arise typically before age five years [Rosenberg et al 2003, Rosenberg et al 2005, Alter et al 2018, McReynolds et al 2021].

FANCB pathogenic variants have been shown to predominantly cause early-onset bone marrow failure (over myeloid malignancy) [Jung et al 2020].

PALB2 encodes an essential protein partner for BRCA2 as it interfaces with DNA. PALB2-related FA is associated with the same malignancy risks and early age of occurrence as BRCA2-related FA [McReynolds et al 2021].

RAD51. Most individuals (4/5) with RAD51-related FA are reported to have variable developmental delay, including speech and language delays, motor delays, and intellectual disability (mild to severe) [Altintas et al 2025].

Genotype-Phenotype Correlations

The clinical spectrum of FA remains heterogenous, though some genotype-phenotype correlations have been identified. In general, null variants lead to a more severe phenotype (e.g., congenital anomalies, early-onset bone marrow failure, and MDS/AML) than hypomorphic variants. A review of genotype-phenotype associations in FA is available [Fiesco-Roa et al 2019].

BRCA2. Specific splice site variants in intron 7 (e.g., c.631+1G>A and c.631+2T>G) offer the greatest risk of AML, with all homozygotes and compound heterozygotes developing AML by age three years [Alter 2006, Alter 2014].

FANCA. Conflicting reports have associated [Faivre et al 2000] and refuted association [Castella et al 2011] of homozygous FANCA null pathogenic variants with earlier-onset anemia and higher incidence of leukemia than individuals with pathogenic variants that permit production of an abnormal FANCA protein. Other FANCA variants (p.His913Pro, p.Arg951Gln, p.Arg951Trp) have been associated with slower hematologic disease progression [Bottega et al 2018]. In an effort to elucidate the impact of specific pathogenic variants, the NCI group identified a higher frequency of solid tumors in individuals with FANCA pathogenic variants in the exon 27-30 C-terminal domain. This region is functionally critical for localization of FANCA to the nucleus. In their cohort, individuals with heterozygous or biallelic pathogenic variants in exon 27-30 of FANCA had a dramatic increase in solid tumor incidence starting around age 20 years and reaching nearly 100% by age 45 years (compared to 25%-50% solid tumor incidence in individuals with other FANCA pathogenic variants) [Altintas et al 2023].

FANCB. Approximately 80% of males with truncating/null FANCB pathogenic variants present with a VACTERL-H (vertebral, anal, cardiac, tracheoesophageal fistula, renal, limb anomalies, hydrocephalus) phenotype, resulting in FANCB-related FA having the highest rate of congenital anomalies. A PHENOS (skin pigmentation, small head, small eyes, nervous system, otic anomalies, short stature) phenotype is apparent in an additional ~5% of males with a null FANCB pathogenic variant [Fiesco-Roa et al 2019]. Research studies of specific FANCB pathogenic variants revealed that pathogenic variants resulting in protein truncation are associated with more severe clinical disease than FANCB missense pathogenic variants, which maintain residual activity and function [Jung et al 2020].

FANCC. Bone marrow failure in FANCC-related FA has been identified as having higher incidence at earlier ages compared to FANCA- or FANCG-related FA in US data, but with a less severe phenotype in a European report [Faivre et al 2000, Rosenberg et al 2008, Yabe et al 2019, Alter et al 2022]. Perhaps such differences are variant specific, with more severe disease caused by some (c.456+4A>T, p.Arg548Ter, and p.Leu554Pro) [Faivre et al 2005] and less severe disease caused by others (c.165+1G>T) [Hartmann et al 2010]. Further genetic modifiers may influence phenotypes among individuals of different ethnicities (e.g., milder phenotype was reported among Japanese individuals homozygous for FANCC pathogenic variant c.456+4A>T) [Futaki et al 2000].

Prevalence

FA is the most common genetic cause of aplastic anemia and one of the most common genetic causes of hematologic malignancy. The ratio of males to females is 1.2:1 (P <0.001 vs expected 1.00).

Rosenberg et al [2011] showed higher carrier rates for pathogenic variants associated with FA than previously reported. Carrier frequency was 1:181 in North Americans and 1:93 in Israel. Specific populations have founder variants with increased carrier frequencies (<1:100) (see Table 11):

Differential Diagnosis

Cells derived from individuals with other chromosome breakage syndromes may also exhibit high rates of spontaneous chromosome breakage; however, cells derived from individuals with Fanconi anemia (FA) exhibit increased chromosome breakage in response to diepoxybutane (DEB) and mitomycin C (MMC). Such chromosomal fragility is seen in few disorders but may be observed in cells derived from some, but not all, individuals with Seckel syndrome or Nijmegen breakage syndrome. In individuals with overlapping phenotypes, molecular genetic testing is necessary to confirm a diagnosis. See Table 5 for selected examples of chromosome breakage syndromes and other disorders to consider in the differential diagnosis of FA.

Table 5.

Fanconi Anemia: Differential Diagnosis

Gene(s)DisorderMOIChromosome BreakageClinical Characteristics
ATM Ataxia-telangiectasia (A-T)ARCells derived from persons w/A-T may exhibit high rates of spontaneous chromosome breakage.Classic A-T is characterized by childhood onset of progressive neurologic manifestations (initially cerebellar ataxia), immunodeficiency, pulmonary disease, ↑ risk of malignancy, & ↑ sensitivity to ionizing radiation.
ATR
CPAP (CENPJ)
CEP152
CEP63
DNA2
NIN
NSMCE2
RBBP8
TRAIP
Seckel syndrome (OMIM PS210600)ARMay show ↑ chromosome breakage w/DNA cross-linking agents (MMC, DEB) 1
  • Growth deficiency, microcephaly w/ID, characteristic facial appearance
  • May be assoc w/pancytopenia &/or AML
BLM Bloom syndrome (BSyn)ARCells derived from persons w/BSyn may exhibit high rates of spontaneous chromosome breakage.Severe pre- & postnatal growth deficiency, immune abnormalities, sensitivity to sunlight, insulin resistance, & high risk for many cancers that occur at an early age
NBN Nijmegen breakage syndrome ARMay manifest ↑ chromosome breakage w/MMC 2
  • Progressive microcephaly, early growth deficiency that improves w/age, recurrent respiratory infections, ↑ risk for malignancy (primarily lymphoma), & premature ovarian failure in females
  • Intellectual abilities tend to decline over time.
NF1 Neurofibromatosis 1 ADNot assoc w/chromosome breakageMultiple café au lait macules, intertriginous freckling, multiple cutaneous neurofibromas, learning disability or behavior problems, iris Lisch nodules, & choroidal abnormalities
RBM8A 3 Thrombocytopenia absent radius syndrome AR 4Bilateral absence of radii w/presence of both thumbs & thrombocytopenia that is generally transient

AD = autosomal dominant; AML = acute myeloid leukemia; AR = autosomal recessive; DEB = diepoxybutane; FA = Fanconi anemia; ID = intellectual disability; MMC = mitomycin C; MOI = mode of inheritance

1.
2.
3.

The diagnosis of thrombocytopenia absent radius syndrome is confirmed by identification of a null heterozygous allele (most often a minimally deleted 200-kb region at chromosome band 1q21.1, but in some instances a heterozygous RBM8A pathogenic variant detected by molecular genetic testing) in a compound heterozygous state with an RBM8A hypomorphic allele.

4.

Inheritance of thrombocytopenia absent radius syndrome is associated with several features unusual in autosomal recessive disorders: a paucity of affected sibs, apparent parent-to-child transmission, and affected second- and third-degree relatives.

VACTERL association (vertebral defects, anal atresia, cardiac malformations, tracheoesophageal fistula with esophageal atresia, radial or renal dysplasia, and limb anomalies; OMIM 192350) may occur in conjunction with FA or independently, highlighting the importance of testing for chromosome breakage to confirm absence or presence of FA. The molecular cause of VACTERL association is unknown.

Management

Clinical practice guidelines for management of Fanconi anemia (FA) are available (see Fanconi Anemia Clinical Care Guidelines).

Evaluations Following Initial Diagnosis

To establish the extent of disease and management requirements in an individual diagnosed with FA, the evaluations summarized in Table 6 (if not performed as part of the evaluation that led to the diagnosis) are recommended (see Fanconi Anemia Clinical Care Guidelines).

Treatment of Manifestations

Recommendations for treatment were agreed upon at a 2014 consensus conference and updated in 2020 (see Fanconi Anemia Clinical Care Guidelines).

Targeted Therapies

In GeneReviews, a targeted therapy is one that addresses the specific underlying mechanism of disease causation (regardless of whether the therapy is significantly efficacious for one or more manifestation of the genetic condition); would otherwise not be considered without knowledge of the underlying genetic cause of the condition; or could lead to a cure. —ED

Table 7.

Fanconi Anemia: Targeted Therapies

TreatmentDosage 1Consideration
Androgens 2
  • Dose depends on which androgen is being utilized.
  • Oxymetholone: 2 mg/kg/day PO (starting dose); may be ↑ up to 5 mg/kg/day
  • Dose may be slowly tapered to minimal effective dose w/careful monitoring of blood counts.
For persons:
  • W/o access to HSCT;
  • Not ready for HSCT;
  • W/o suitable HSCT donor available.
G-CSF
  • 5 mcg/kg/day
  • Dose titrated to lowest possible dose & frequency to keep ANC >1,000/mm3
Administered in consultation w/FA expert
HSCT Only curative therapy for hematologic manifestations (aplastic anemia, myelodysplastic syndrome, & acute leukemia)

ANC = absolute neutrophil count; FA = Fanconi anemia; G-CSF = granulocyte colony-stimulating factor; HSCT = hematopoietic stem cell transplant; PO = oral

1.
2.

Synthetic androgens used in FA include stanozolol in Asia and oxandrolone and danazol in North America.

Androgens improve (at least transiently) the red blood cell and platelet counts in approximately 50% of individuals. Androgen therapy can be considered when the hemoglobin drops below 8 g/dL or the platelet count falls below 30,000/mm3 ("severe" – see Table 2). Oxymetholone therapy suppresses osteopontin transcription and induces hematopoietic stem cell cycling in Fanconi mice, suggesting downregulation of osteopontin as an important potential mechanism for the drug's action [Zhang et al 2015]. Although only 10%-20% of individuals receiving continuous low-dose androgen therapy are long-term responders, this option can be particularly useful for individuals who do not have access to or are not ready for hematopoietic stem cell transplantation (HSCT), or for individuals for whom a suitable donor is not available.

Side effects of androgen administration include virilization and liver toxicity (e.g., elevated liver enzymes, cholestasis, peliosis hepatis [vascular lesion with multiple blood-filled cysts], and hepatic tumors). Individuals treated with androgens should have blood live function tests measured every three to six months and liver ultrasound every six to twelve months to screen for liver tumors. If no response is seen after three to four months, androgens should be discontinued [Scheckenbach et al 2012, Rose et al 2014, Paustian et al 2016].

Granulocyte colony-stimulating factor (G-CSF) improves the neutrophil count in some individuals. G-CSF dose should be titrated to the lowest possible dose and frequency to keep absolute neutrophil count above 1,000/mm3. Note: (1) A bone marrow aspirate and biopsy should be performed prior to the initiation of G-CSF and monitored every six months throughout treatment, given the theoretic risk of stimulating the growth of a leukemic clone. (2) G-CSF should be administered in consultation with an FA expert.

HSCT is the only curative therapy for the hematologic manifestations of FA, including aplastic anemia, myelodysplastic syndrome (MDS), and acute myeloid leukemia (AML). Ideally, HSCT is performed prior to onset of MDS/AML and before multiple transfusions [Mehta et al 2010, Ebens et al 2017]. Individuals with FA are sensitive to chemotherapy and radiation, need special transplant regimens, and should be cared for and transplanted at centers with the most experience in HSCT in FA.

A multi-institutional study reported a one-year probability of overall survival of 80% in 45 individuals with FA transplanted for marrow failure and/or MDS, using alternative donors (including mismatched related and unrelated donors) and chemotherapy-only preparative regimen. Survival for individuals younger than age ten years transplanted for bone marrow failure was even better, at 91.3% (±5.9%) [Mehta et al 2017].

Fludarabine reduced the incidence of graft failure and allowed for removal of radiation from the preparative regimens in a matched-sib donor setting [MacMillan et al 2015]. Transplant outcomes for recipients of alternative stem cell donors have achieved those of matched-sib donors [Mehta et al 2017, Ebens et al 2018]. Newer approaches to graft manipulation, either in vivo or ex vivo, permit use of haploidentical donors without prohibitive rates of graft-vs-host disease (GVHD) [Bonfim et al 2017, Strocchio et al 2021, Zubicaray et al 2021].

Individuals successfully treated with HSCT are at increased risk for solid tumors, in addition to the baseline increased risk for those with FA [Rosenberg et al 2005, Peffault de Latour et al 2013]. In the European Society for Blood and Marrow Transplantation (EBMT) registry study of 795 individuals with FA who underwent HSCT, the 15-year cumulative incidence of secondary malignancies was 15% for the entire cohort, and 21% in individuals who survived more than one year (n=509) and increased to 34% at 20 years. The majority (89%) of secondary malignancies in the EBMT registry study were solid tumors, and previous chronic GVHD was one of the independent risk factors [Peffault de Latour et al 2013]. Another report suggested cumulative incidence of squamous cell carcinoma (SCC) at 15 and 30 years from the HSCT to be 14.2% and 71.2%, respectively [Murillo-Sanjuán et al 2022]. A long-term follow-up study of individuals with FA transplanted in Brazil also confirmed the increased risk of SCC in individuals with a history of chronic GVHD [Bonfim et al 2016]. Note: The majority of the individuals in the EBMT registry study and all the individuals transplanted in Brazil received T-cell depleted (TCD) grafts.

Risk-adapted busulfan dosing containing chemotherapy-only conditioning in the currently ongoing US multi-institutional, prospective study reported further improvement in both overall survival (92%) and disease-free survival (88%) for all individuals (n=54) [Mehta et al 2023].

Supportive Care

Supportive care to improve quality of life, maximize function, and reduce complications is recommended. This ideally involves multidisciplinary care by specialists in relevant fields (see Table 8).

Table 8.

Fanconi Anemia: Treatment of Manifestations

Manifestation/ConcernTreatmentConsiderations/Other
Growth deficiency Treatment per endocrinologist
Limb anomalies &
other orthopedic
manifestations
  • Mgmt per orthopedic surgeon
  • PT & OT
Kidney malformations Mgmt per nephrologist &/or urologist
Genital anomalies Mgmt per gynecologist or urologist
Hypothyroidism Treatment per endocrinologist
Diabetes / impaired glucose tolerance
Ocular anomalies Mgmt per ophthalmologist
Hearing loss
  • Hearing aids may be helpful.
  • Mgmt per otolaryngologist
Community hearing services through early intervention or school district
Development
  • Early intervention for DD
  • IEP for school-age children
  • Therapies (speech, OT, PT) as needed
Cardiac/vascular anomalies Treatment per cardiologist & surgeon
Nutrition Supplemental feeding as needed by nasogastric tube or gastrostomy tubeLow threshold for clinical feeding eval if clinical signs or symptoms of dysphagia
MDS/AML
  • Treatment should be through center w/experience in FA.
  • Options include chemotherapy, HSCT w/ or w/o prior induction of chemotherapy, & investigational trials.
  • Plans for HSCT should be in place prior to starting chemotherapy.
  • Chemotherapy only in coordination w/centers experienced w/FA, as it can cause severe, prolonged, or irreversible myelosuppression.
Solid tumors
  • Prompt, aggressive workup for any symptoms suggestive of a malignancy
  • Early detection & surgical removal are mainstay of therapy.
  • HPV vaccination at age ≥9 yrs to ↓ risk of gynecologic cancer in females & risk of oral cancer in all persons.
Dermatologic
manifestations
  • Liberal use of sunscreen & rash guards
  • Treatment of skin SCC or BCC per dermatologist
Multidisciplinary treatment in coordination w/FA expert
Family/Community
  • Ensure appropriate social work involvement to connect families w/local resources, respite, & support.
  • Coordinate care to manage multiple subspecialty appointments, equipment, medications, & supplies.
  • Ongoing assessment of need for palliative care involvement &/or home nursing
  • Consider involvement in adaptive sports or Special Olympics.

AML = acute myeloid leukemia; BCC = basal cell carcinoma; DD = developmental delay; FA = Fanconi anemia; HPV = human papilloma virus; HSCT = hematopoietic stem cell transplantation; IEP = individualized education plan; MDS = myelodysplastic syndrome; OT = occupational therapy; PT = physical therapy; SCC = squamous cell carcinoma

MDS/AML treatment remains challenging. Published reports of chemotherapy regimens for AML in individuals with FA are sparse and limited by the unclear benefit to the overall outcome due to the lack of longitudinal follow up [Mehta et al 2007, Talbot et al 2014, Mitchell et al 2014]. Published EBMT registry experience suggests a survival benefit to achieving complete remission prior to HSCT [Giardino et al 2020]. A study of 30 individuals reported promising outcomes following allogeneic HSCT for individuals with FA and MDS/AML using T-cell depleted (TCD) grafts, including high-risk individuals; 50% were age ≥20 years and a majority received mismatched grafts [Satty et al 2024]. With median follow up of 8.7 years, five-year overall survival was 66.8% and disease-free survival 53.8%. The five-year cumulative incidences of relapse and non-relapse mortality were 24.3% and 21.9%, respectively. Future prospective studies are needed to compare this approach with other HSCT platforms.

Solid tumors. Treatment is challenging due to the increased toxicity associated with chemotherapy and radiation in individuals with FA. Data is limited on use of chemotherapy at standard doses or reduced doses and schedules in individuals with FA; there are reports of severe or fatal toxicities and poor treatment outcomes [Masserot et al 2008, Tan et al 2011, Spanier et al 2012, Kutler et al 2016]. A systematic review of a large cohort of 119 individuals with FA-related head and neck squamous cell carcinomas (HNSCCs) including 16 esophageal SCCs (131 total primary tumors) provided treatment details (e.g., surgery, radiotherapy, systemic therapy [including cytotoxic agents, epidermal growth factor receptor inhibitors, or immune checkpoint inhibitors], or a combination of modalities). Despite the large cohort, the only definitive conclusion was that the primary treatment for FA-related HNSCCs should be surgical resection with curative intent [Lee et al 2021].

Individuals diagnosed with a genital tract cancer should be referred to a gynecologic oncologist immediately, and care should be coordinated with FA experts.

Surveillance

To monitor existing manifestations, the individual's response to supportive care, and the emergence of new manifestations, the evaluations summarized in Table 9 are recommended (see Fanconi Anemia Clinical Care Guidelines).

Additional cancer surveillance for individuals with Fanconi anemia. Some of the genes associated with FA are known breast cancer susceptibility genes: BRCA1, BRCA2, BRIP1, PALB2, and RAD51C. Individuals who have FA due to pathogenic variants in one of these genes should follow the National Comprehensive Cancer Network (NCCN) screening guidelines that have been developed for individuals with a heterozygous pathogenic variant in one of these genes. This should be done under the care of a genetic health care professional. To date, the risk of breast cancer has not been established in individuals with FA due to biallelic pathogenic variants in these genes, and no additional recommendations have been determined for breast cancer screening.

Agents/Circumstances to Avoid

Blood transfusions. Blood products should be cytomegalovirus (CMV) safe and irradiated. To reduce the chances of sensitization, family members must not act as blood donors. Once an individual requires transfusions, the individual should be referred for transplantation.

Toxic agents to avoid include smoking, secondhand smoke, and alcohol, which have been implicated in tumorigenesis.

Excessive sun exposure. Sunscreen and sun-protective clothing should be used to limit UV exposure.

Unsafe sex practices increase the risk for HPV-associated malignancy.

Radiographic studies for the purpose of surveillance should be minimized in the absence of clinical indications. However, baseline skeletal surveys may be considered, in order to document bony anomalies that may lead to problems with age, such as anomalies of the wrist, hip, and vertebrae.

Evaluation of Relatives at Risk

For early diagnosis and treatment. It is appropriate to evaluate all sibs of an affected individual with autosomal recessive FA (and all at-risk family members of an individual with autosomal dominant [RAD51-related] or X-linked [FANCB-related] FA) in order to identify as early as possible those who would benefit from appropriate monitoring for FA-related physical abnormalities, bone marrow failure, and related cancers. Evaluations include:

  • Molecular genetic testing if the FA-related pathogenic variant(s) in the family are known;
  • Cytogenetic testing of lymphocytes with diepoxybutane (DEB) and mitomycin C (MMC) for detection of increased chromosome breakage and radial forms.

For hematopoietic stem cell donation

  • It is imperative that a diagnosis of FA be conclusively excluded using cytogenetic or molecular testing as above in any family member under consideration as a potential donor.
  • Following exclusion of diagnosis of FA and confirmation of HLA compatibility, the individual(s) should undergo the standard donor evaluation protocol applicable to all prospective donors.

Breast cancer susceptibility. Heterozygous pathogenic variants in some FA-related genes are known to be associated with an increased risk for breast and other cancers (see Genetically Related Disorders). Family members found to have a pathogenic variant in a known cancer susceptibility gene should undergo cancer screening as recommended in the NCCN Clinical Practice Guidelines in Oncology: Genetic/Familial High-Risk Assessment: Breast, Ovarian, and Pancreatic, and Prostate (no-fee registration and login required) and under the care of a genetic health care professional.

See Genetic Counseling for issues related to testing of at-risk relatives for genetic counseling purposes.

Pregnancy Management

Pregnancy is possible in females with FA, whether or not they have undergone HSCT [Nabhan et al 2010, Tsui & Crismani 2019].

Pregnancy needs to be managed by a high-risk maternal-fetal obstetrician along with a hematologist.

Therapies Under Investigation

Gene therapy. Several early phase clinical trials of FANCA gene therapy using lentiviral vectors were conducted at sites worldwide, including Stanford University and University of Washington / Fred Hutchinson Cancer Research Center in the United States, Hospital Universitari Vall d'Hebron Research Institute in Spain, and Shenzhen Geno-Immune Medical Institute in China. All of these trials are now terminated or no longer actively recruiting.

Separately, the US National Heart, Lung, and Blood Institute completed a Phase I trial of retroviral vector transduction of autologous CD34+ stem cells in individuals with FANCC-related FA (results pending).

While some trials aim to correct CD34+ stem cells obtained from bone marrow harvest, others are exploring peripheral blood mobilization with a combination of G-CSF and plerixafor, shown advantageous in preclinical models [Río et al 2017].

HSCT. A multicenter study (Cincinnati Children's Hospital Medical Center, Memorial Sloan Kettering Cancer Center, and Fred Hutchinson Cancer Research Center) is investigating risk-adjusted busulfan dosing in a chemotherapy-only conditioning regimen for HSCT in Fanconi anemia (including individuals with MDS and leukemia in addition to those with bone marrow failure as HSCT indication) (NCT02143830).

Ex vivo T-cell receptor alpha/beta depletion of the stem cell product in HSCT is under investigation at the University of Minnesota to reduce the risk of graft-vs-host disease and allow avoidance of post-HSCT immune suppression (NCT03579875).

A Phase Ib clinical trial in individuals with FA and bone marrow failure evaluated safety and efficacy of briquilimab (anti-CD117 antibody)-based conditioning in combination with rabbit anti-thymocyte globulin, cyclophosphamide, fludarabine, and rituximab immunosuppression and T-cell receptor alpha/beta-depleted and CD19+ B cell-depleted haploidentical HSCT. All three individuals are alive and well [Agarwal et al 2025]. These data demonstrate the broad potential of this protocol in maintaining HSCT efficacy while further reducing toxicity (NCT04784052).

A Phase I/II trial will incorporate an anti-cKIT antibody into HSCT conditioning to aid in myeloablation and reduce chemotherapy/radiation toxicity. This will be given in combination with T-cell receptor alpha/beta depletion of the stem cell product to individuals older than age two years with bone marrow failure as the HSCT indication (Jasper Therapeutics sponsored at Stanford University) (NCT04784052) [Agarwal et al 2025].

Hematopoiesis support. Phase I/II study results of the antioxidant quercetin, anti-hyperglycemic metformin, and thrombopoietin mimetic eltrombopag for bone marrow failure in children and adults with FA have been published.

In a dose-finding Phase I study, quercetin, a natural antioxidant, was safe and well tolerated in individuals with FA. Based on pharmacokinetics, a recommended dose of quercetin was identified and was utilized in a Phase II study enrolling 18 individuals [Mehta et al 2025].

In the metformin study, 13/14 individuals with FA-related cytopenia (93%) tolerated maximal dosing for age; one individual had dose reduction for grade 2 gastrointestinal symptoms. Four of 13 individuals (31%) had a hematologic response [Pollard et al 2022]. Using similar predefined criteria, 8/15 individuals (53%) with cytopenia had a hematologic response at some point after quercetin therapy, three of whom had a more sustained response in cell counts. However, interpretation of these data is complex. Note that small sample size related to the rarity of FA, differences in severity of baseline bone marrow failure, along with inherent count fluctuation in individuals with FA limit assessment of response in both studies, and the results must therefore be viewed with caution.

In the study evaluating eltrombopag in individuals with FA, 1/8 participants required dose adjustments due to gastrointestinal intolerance, and two additional participants required modifications owing to abnormalities in hepatobiliary laboratory parameters. No clonal evolution was detected through conventional cytogenetic analysis; however, one individual developed a transient somatic RUNX1 variant. Eltrombopag did not produce clinically meaningful therapeutic responses. An increase in gene-corrected cells was observed in one mosaic individual and in two recipients of gene therapy, indicating that the drug may have conferred a proliferative advantage to corrected cells over uncorrected counterparts [Iriondo et al 2025].

Squamous cell carcinoma (SCC). A Phase II study of the antioxidant quercetin for prevention of SCC in individuals with FA is near completion at Cincinnati Children's Hospital Medical Center (NCT03476330).

Search ClinicalTrials.gov in the US and EU Clinical Trials Register in Europe for access to information on clinical studies for a wide range of diseases and conditions.

Genetic Counseling

Genetic counseling is the process of providing individuals and families with information on the nature, mode(s) of inheritance, and implications of genetic disorders to help them make informed medical and personal decisions. The following section deals with genetic risk assessment and the use of family history and genetic testing to clarify genetic status for family members; it is not meant to address all personal, cultural, or ethical issues that may arise or to substitute for consultation with a genetics professional. —ED.

Mode of Inheritance

Fanconi anemia (FA) is inherited in an autosomal recessive manner, an autosomal dominant manner (RAD51-related FA), or an X-linked manner (FANCB-related FA).

Autosomal Recessive Inheritance – Risk to Family Members

Parents of a proband

Sibs of a proband

Offspring of a proband. Unless an affected individual's reproductive partner also has FA-related pathogenic variant(s), offspring of an individual with autosomal recessive FA will be obligate heterozygotes for a pathogenic variant in an FA-related gene.

Other family members. Each sib of the proband's parents is at a 50% risk of being heterozygous for a pathogenic variant in an FA-related gene.

Heterozygote detection

  • Heterozygote testing for at-risk relatives requires prior identification of the FA-related pathogenic variants in the family.
  • Individuals who are heterozygous for an autosomal recessive FA-related pathogenic variant cannot be detected by cytogenetic testing of lymphocytes with diepoxybutane (DEB) and mitomycin C (MMC).

Autosomal Dominant Inheritance – Risk to Family Members (RAD51-Related FA)

Parents of a proband

Sibs of a proband. The risk to the sibs of the proband depends on the genetic status of the proband's parents:

Offspring of a proband. Each child of an individual with RAD51-related FA is presumed to have a 50% chance of inheriting the pathogenic variant; however, only one individual with RAD51-related FA has reached adulthood and no offspring have been reported.

Other family members. Given that all probands with RAD51-related FA reported to date have the disorder as a result of a de novo RAD51 pathogenic variant, the risk to other family members is presumed to be low.

X-Linked Inheritance – Risk to Family Members (FANCB-Related FA)

Parents of a male proband

  • The father of a male with FANCB-related FA will not have the disorder nor will he be hemizygous for the FANCB pathogenic variant; therefore, he does not require further evaluation/testing.
  • In a family with more than one affected individual, the mother of an affected male is an obligate heterozygote. Note: If a woman has more than one affected child and no other affected relatives and if the FANCB pathogenic variant cannot be detected in her leukocyte DNA, she most likely has gonadal mosaicism.
  • If a male is the only affected family member (i.e., a simplex case), the mother may be a heterozygote, the affected male may have a de novo FANCB pathogenic variant (in which case the mother is not a heterozygote), or the mother may have somatic/gonadal mosaicism.
  • Molecular genetic testing of the mother is recommended to confirm her genetic status and to allow reliable recurrence risk assessment.

Sibs of a male proband. The risk to sibs depends on the genetic status of the mother:

Offspring of a male proband

  • Affected males transmit the FANCB pathogenic variant to all of their daughters (who will be heterozygotes) and none of their sons.
  • To date, no male with FANCB-related FA has been old enough to have children; they may also be infertile, as are many males with FA. Further, FANCB has been demonstrated essential to regulation of spermatogenesis and affected mice are infertile [Kato et al 2015].

Other family members. The maternal aunts and maternal cousins of a male proband may be at risk of having a FANCB pathogenic variant.

Note: Molecular genetic testing may be able to identify the family member in whom a de novo pathogenic variant arose – information that could help determine genetic risk status of the extended family.

Heterozygote detection

Related Genetic Counseling Issues

See Management, Evaluation of Relatives at Risk for information on evaluating sibs and other at-risk relatives for the purpose of early diagnosis and treatment.

Family planning

  • The optimal time for determination of genetic risk and discussion of the availability of prenatal/preimplantation genetic testing is before pregnancy.
  • It is appropriate to offer genetic counseling (including discussion of potential risks to offspring and reproductive options) to young adults who are affected or are at risk of having FA-related pathogenic variant(s).
  • Carrier testing should be considered for the reproductive partners of individuals with autosomal recessive FA and individuals known to be carriers of an autosomal recessive FA-related pathogenic variant, particularly if both partners are of the same ancestry. Rosenberg et al [2011] showed higher carrier rates for pathogenic variants associated with FA than previously reported: carrier frequency was 1:181 in North Americans and 1:93 in Israel. Specific populations have founder variants with increased carrier frequencies (<1:100) (see Prevalence and Table 11).
  • The American College of Medical Genetics and Genomics includes FANCC-related FA among those disorders for which carrier screening should be offered to all individuals who are pregnant or planning a pregnancy [Gregg et al 2021].

DNA banking. Because it is likely that testing methodology and our understanding of genes, pathogenic mechanisms, and diseases will improve in the future, consideration should be given to banking DNA from probands in whom a molecular diagnosis has not been confirmed (i.e., the causative pathogenic mechanism unknown). For more information, see Huang et al [2022].

Prenatal Testing and Preimplantation Genetic Testing

Molecular genetic testing. Once the FA-related pathogenic variant(s) have been identified in an affected family member, prenatal and preimplantation genetic testing for FA are possible. Preimplantation genetic testing has successfully identified at-risk embryos as unaffected with FA and HLA matched to affected sibs [Kahraman et al 2014, Rechitsky et al 2020].

Chromosome breakage. Prenatal testing is also possible for pregnancies at increased risk for FA by performing cytogenetic testing in the presence of DEB/MMC to evaluate for increased chromosome breakage in fetal cells obtained by chorionic villus sampling or amniocentesis [Auerbach 2015]; however, if the pathogenic variants are known in the family, molecular genetic testing is the method of choice for prenatal diagnosis.

Fetal ultrasound evaluation. Ultrasound examination can be used to evaluate for fetal anomalies consistent with FA. However, ultrasound examination is not a diagnostic test for FA. Many congenital anomalies characteristic of FA may not be detectable by ultrasound examination, and those that can be seen may be associated with diagnoses other than FA [Gandhi et al 2019].

Differences in perspective may exist among medical professionals and within families regarding the use of prenatal and preimplantation genetic testing. While most health care professionals would consider use of prenatal and preimplantation genetic testing to be a personal decision, discussion of these issues may be helpful.

Resources

GeneReviews staff has selected the following disease-specific and/or umbrella support organizations and/or registries for the benefit of individuals with this disorder and their families. GeneReviews is not responsible for the information provided by other organizations. For information on selection criteria, click here.

  • Fanconi Cancer Foundation
    Phone: 888-326-2664; 541-687-4658
    Email: info@fanconi.org
  • International Fanconi Anemia Registry (IFAR)
    The Rockefeller University
    Phone: 212-327-8608
    Email: fanconiregistry@rockefeller.edu

Molecular Genetics

Information in the Molecular Genetics and OMIM tables may differ from that elsewhere in the GeneReview: tables may contain more recent information. —ED.

Table A.

Fanconi Anemia: Genes and Databases

GeneChromosome LocusProteinLocus-Specific DatabasesHGMDClinVar
BRCA117q21​.31Breast cancer type 1 susceptibility proteinBRCA1 homepage - LOVD
Database of BRCA1 and BRCA2 sequence variants that have been clinically reclassified by a quantitative integrated evaluation
BRCA1 @ ZAC-GGM
BRCA1BRCA1
BRCA213q13​.1Breast cancer type 2 susceptibility proteinBRCA2 homepage - LOVD
Database of BRCA1 and BRCA2 sequence variants that have been clinically reclassified using a quantitative integrated evaluation
Fanconi Anaemia Mutation Database (FANCD1 - BRCA2)
BRCA2 @ ZAC-GGM
BRCA2BRCA2
BRIP117q23​.2Fanconi anemia group J proteinBRIP1 @ LOVD
Fanconi Anaemia Mutation Database (FANCJ - BRIP1)
BRIP1BRIP1
ERCC416p13​.12DNA repair endonuclease XPFERCC4 databaseERCC4ERCC4
FAAP10017q25​.3Fanconi anemia core complex-associated protein 100FAAP100FAAP100
FANCA16q24​.3Fanconi anemia group A proteinFanconi Anemia Mutation Database (FANCA)FANCAFANCA
FANCBXp22​.2Fanconi anemia group B proteinFANCB @ LOVD
Fanconi Anaemia Mutation Database (FANCB)
FANCBFANCB
FANCC9q22​.32Fanconi anemia group C proteinFanconi Anemia Mutation Database (FANCC)FANCCFANCC
FANCD23p25​.3Fanconi anemia group D2 proteinFanconi Anaemia Mutation Database (FANCD2)FANCD2FANCD2
FANCE6p21​.31Fanconi anemia group E proteinFanconi Anaemia Mutation Database (FANCE)FANCEFANCE
FANCF11p14​.3Fanconi anemia group F proteinFanconi Anaemia Mutation Database (FANCF)FANCFFANCF
FANCG9p13​.3Fanconi anemia group G proteinFanconi Anaemia Mutation Database (FANCG)FANCGFANCG
FANCI15q26​.1Fanconi anemia group I proteinFanconi Anemia Mutation Database (FANCI)FANCIFANCI
FANCL2p16​.1E3 ubiquitin-protein ligase FANCLFanconi Anaemia Mutation Database (FANCL)FANCLFANCL
FANCM14q21​.2Fanconi anemia group M proteinFanconi Anaemia Mutation Database (FANCM)FANCMFANCM
MAD2L21p36​.22Mitotic spindle assembly checkpoint protein MAD2BMAD2L2MAD2L2
PALB216p12​.2Partner and localizer of BRCA2PALB2 databasePALB2PALB2
RAD5115q15​.1DNA repair protein RAD51 homolog 1RAD51 databaseRAD51RAD51
RAD51C17q22DNA repair protein RAD51 homolog 3RAD51C @ LOVDRAD51CRAD51C
RFWD316q23​.1E3 ubiquitin-protein ligase RFWD3RFWD3RFWD3
SLX416p13​.3Structure-specific endonuclease subunit SLX4SLX4 @ LOVDSLX4SLX4
UBE2T1q32​.1Ubiquitin-conjugating enzyme E2 TUBE2TUBE2T
XRCC27q36​.1DNA repair protein XRCC2XRCC2 @ LOVDXRCC2XRCC2

Data are compiled from the following standard references: gene from HGNC; chromosome locus from OMIM; protein from UniProt. For a description of databases (Locus Specific, HGMD, ClinVar) to which links are provided, click here.

Table B.

OMIM Entries for Fanconi Anemia (View All in OMIM)

113705BRCA1 DNA REPAIR-ASSOCIATED PROTEIN; BRCA1
133520ERCC EXCISION REPAIR 4, ENDONUCLEASE CATALYTIC SUBUNIT; ERCC4
179617RAD51 RECOMBINASE; RAD51
227645FANCONI ANEMIA, COMPLEMENTATION GROUP C; FANCC
227646FANCONI ANEMIA, COMPLEMENTATION GROUP D2; FANCD2
227650FANCONI ANEMIA, COMPLEMENTATION GROUP A; FANCA
300514FANCONI ANEMIA, COMPLEMENTATION GROUP B; FANCB
300515FANCB GENE; FANCB
600185BRCA2 DNA REPAIR-ASSOCIATED PROTEIN; BRCA2
600375X-RAY REPAIR CROSS COMPLEMENTING 2; XRCC2
600901FANCONI ANEMIA, COMPLEMENTATION GROUP E; FANCE
602774RAD51 PARALOG C; RAD51C
602956FANCG GENE; FANCG
603467FANCONI ANEMIA, COMPLEMENTATION GROUP F; FANCF
604094MITOTIC ARREST-DEFICIENT 2 LIKE 2; MAD2L2
605724FANCONI ANEMIA, COMPLEMENTATION GROUP D1; FANCD1
605882BRCA1-INTERACTING PROTEIN 1; BRIP1
607139FANCA GENE; FANCA
608111FANCL GENE; FANCL
609053FANCONI ANEMIA, COMPLEMENTATION GROUP I; FANCI
609054FANCONI ANEMIA, COMPLEMENTATION GROUP J; FANCJ
609644FANCM GENE; FANCM
610355PARTNER AND LOCALIZER OF BRCA2; PALB2
610538UBIQUITIN-CONJUGATING ENZYME E2 T; UBE2T
610832FANCONI ANEMIA, COMPLEMENTATION GROUP N; FANCN
611301FA CORE COMPLEX-ASSOCIATED PROTEIN 100; FAAP100
611360FANCI GENE; FANCI
613278SLX4 STRUCTURE-SPECIFIC ENDONUCLEASE SUBUNIT; SLX4
613390FANCONI ANEMIA, COMPLEMENTATION GROUP O; FANCO
613897FANCF GENE; FANCF
613899FANCC GENE; FANCC
613951FANCONI ANEMIA, COMPLEMENTATION GROUP P; FANCP
613976FANCE GENE; FANCE
613984FANCD2 GENE; FANCD2
614082FANCONI ANEMIA, COMPLEMENTATION GROUP G; FANCG
614083FANCONI ANEMIA, COMPLEMENTATION GROUP L; FANCL
614151RING FINGER AND WD REPEAT DOMAINS-CONTAINING PROTEIN 3; RFWD3
615272FANCONI ANEMIA, COMPLEMENTATION GROUP Q; FANCQ
616435FANCONI ANEMIA, COMPLEMENTATION GROUP T; FANCT
617243FANCONI ANEMIA, COMPLEMENTATION GROUP V; FANCV
617244FANCONI ANEMIA, COMPLEMENTATION GROUP R; FANCR
617247FANCONI ANEMIA, COMPLEMENTATION GROUP U; FANCU
617784FANCONI ANEMIA, COMPLEMENTATION GROUP W; FANCW
617883FANCONI ANEMIA, COMPLEMENTATION GROUP S; FANCS
621258FANCONI ANEMIA, COMPLEMENTATION GROUP X; FANCX

See Table A for gene and protein names.

Molecular Pathogenesis

At least 23 genes that are involved in Fanconi anemia (FA) and account for each of the phenotypic complementation groups have been identified. The proteins encoded by the FA-related genes are considered to work together in a common pathway/network called "the FA pathway" or "the FA-BRCA pathway/network," which regulates cellular resistance to DNA cross-linking agents [Fiesco-Roa et al 2019, Peake & Noguchi 2022].

Eight of the FA proteins (FANCA, FANCB, FANCC, FANCE, FANCF, FANCG, FANCL, and FANCM), along with proteins FAAP24 [Ciccia et al 2007] and FAAP100 [Ling et al 2007], are assembled in a nuclear complex (FA core complex). This complex is a multisubunit ubiquitin ligase complex; monoubiquitination of two other FA proteins (FANCD2 and FANCI) depends on the FA core complex [Garcia-Higuera et al 2001, Smogorzewska et al 2007]. In response to DNA damage or in S phase of the cell cycle, this FA core complex activates the monoubiquitination of the FANCD2 and FANCI proteins. Monoubiquitinated FANCD2 and monoubiquitinated FANCI are translocated to nuclear foci containing the proteins BRCA1, BRCA2, PALB2, and RAD51. FANCI shares sequence similarity with FANCD2; together they form a protein complex (ID complex) [Smogorzewska et al 2007]. Monoubiquitination of FANCD2 and FANCI is interdependent [Smogorzewska et al 2007]. A nuclease, FAN1, has been shown to bind to monoubiquitinated FANCD2, which directs its enzymatic activity [Huang & D'Andrea 2010]. A cell-free system has been used to recapitulate cross-link repair in vitro [Knipscheer et al 2009].

Furthermore, the FA core complex forms a larger complex with BLM, RPA, and topoisomerase IIIα, called BRAFT (BLM, RPA, FA, and topoisomerase IIIα) [Meetei et al 2003] in a further link to Bloom syndrome. FANCM is found in both separable complexes: the FA core complex as well as the BLM complex [Deans & West 2009].

BRCA2 is a tumor suppressor gene that confers breast cancer susceptibility [Howlett et al 2002] and has a distinct clinical phenotype [Wagner et al 2004, Alter et al 2007, Myers et al 2012]. BRCA2 protein stability and localization is regulated by PALB2 (partner and localizer of BRCA2) [Xia et al 2006], encoded by PALB2, another breast cancer susceptibility gene [Reid et al 2007]. Another breast cancer susceptibility gene [Seal et al 2006], BRIP1, is also associated with FA [Levitus et al 2005, Levran et al 2005, Litman et al 2005]. BRCA2, PALB2, and BRIP1 are not required for FANCD2 protein monoubiquitination or FANCD2 nuclear foci formation but are still required for cellular resistance to mitomycin C (MMC) or diepoxybutane (DEB). BRCA2 has been found to act in multiple subcomplexes of FA proteins, including FANCG and FANCD2 [Wilson et al 2010], suggesting that the notion of acting downstream of FANCD2 monoubiquitination may be too simplistic. Phosphorylation of FANCD2 by CHK1 has been shown to be necessary for interaction with BRCA2 [Zhi et al 2009]. BRIP1 and FANCD2 have also been shown to be functionally linked in foci formation [Zhang et al 2010].

Amelioration of FA pathology has been implicated in reports of downregulation of elements of the non-homologous end-joining pathway [Adamo et al 2010]. These data propose that much of FA pathophysiology results from the unfettered work of non-homologous end joining promoting inaccurate repair. On the other hand, FA involvement in homologous recombinatorial repair has been well established in interactions with BRCA1, BRCA2, and RAD51C. FANCD2 has also been shown to interact with PCNA and pol K, suggesting that translesion synthesis, a variant of homologous recombination, may be the most direct function of FA proteins in bypass of the lesion [Ho & Schärer 2010, Song et al 2010].

Mechanism of disease causation. Loss of function

Table 10.

Fanconi Anemia: Gene-Specific Laboratory Considerations

Gene 1Special Consideration
BRCA1
BRCA2 BRCA2 variants should be classified according to the ClinGen BRCA1 & BRCA2 VCEP specifications to the ACMG/AMP variant interpretation guidelines.
FANCD2 FANCD2 has ≥2 pseudogenes reported (FANCD2P1 & FACD2P2) that may interfere w/interpretation of sequence analysis data.
FANCL FANCL has ≥1 pseudogene reported (LOC100421207) that may interfere w/interpretation of sequence analysis data.
PALB2 PALB2 variants should be classified according to the ClinGen PALB2 VCEP specifications to the ACMG/AMP variant interpretation guidelines.

ACMG = American College of Medical Genetics and Genomics; AMP = Association for Molecular Pathology; VCEP = Variant Curation Expert Panel

1.

Genes from Table 1 in alphabetic order

Table 11.

Pathogenic Variants Referenced in This GeneReview by Gene

Gene 1Reference
Sequences
DNA Nucleotide Change
(Alias 2)
Predicted Protein
Change
Comment [Reference]
BRCA2 NM_000059​.4 c.631+1G>A
(IVS7+1G>A)
--See Genotype-Phenotype Correlations.
c.631+2T>G
(IVS7+2T>G)
--
NM_000059​.4
NP_000050​.3
c.5946delTp.Ser1982ArgfsTer22Founder variant in Ashkenazi Jews [Cox et al 2018]
FANCA NM_000135​.4
NP_000126​.2
c.295C>Tp.Gln99TerFounder variant in Spanish Romani [Callén et al 2005]
c.1115_1118delTTGGp.Val372AlafsTer42Common pathogenic variant in northern Europeans
c.2172dupGp.Ser725ValfsTer69Founder variants in Moroccan Jews [Tamary et al 2000]
c.4275delTp.Asp1427ThrfsTer6
c.2738A>Cp.His913ProAssoc w/slower hematologic disease progression [Bottega et al 2018]
c.2851C>Tp.Arg951Trp
c.2852G>Ap.Arg951Gln
c.3398delAp.His1133ProfsTer7Founder variants in Afrikaners [Tipping et al 2001]
NG_011706​.1 Del exons 11-17 2--
Del exons 12-31 2--
FANCC NM_000136​.3
NP_000127​.2
c.37C>Tp.Gln13TerCommon in northern Europeans 3
c.67delG
(322delG)
p.Asp23IlefsTer23Founder variant in Mennonites; common in northern Europeans & southern Italy 3
NM_000136​.3 c.165+1G>T--Common variant in Saudi population [Hartmann et al 20103
c.456+4A>T
(IVS4+4A>T)
--Founder variant in Ashkenazi Jews; common pathogenic variant in Japanese 3
c.891_893+1delCTGG--Founder variant in Tunisian Jews [Tamary et al 2000]
NM_000136​.3
NP_000127​.2
c.1642C>Tp.Arg548TerCommon in northern Europeans & southern Italy 3
c.1661T>Cp.Leu554ProSee Genotype-Phenotype Correlations.
FANCE NM_021922​.3 c.1510-1G>A--Founder variant in Amish [Scott et al 2025]
FANCG NM_004629​.2 c.307+1G>C
(IVS3+1G>C)
--Common in Koreans & Japanese
NM_004629​.2
NP_004620​.1
c.637_643delTACCGCCp.Tyr213LysfsTer6Founder variant in sub-Saharan Blacks [Morgan et al 2005]
NM_004629​.2 c.925-2A>G
(IVS8-2A>G)
--Common in Brazilians & northern Europeans
c.1480+1G>C
(IVS11+1G>C)
--Common in French Canadians & northern Europeans [Auerbach et al 2003]
FANCL NM_018062​.4 c.1092G>ASee footnote 4.Founder variant in South Asians [Donovan et al 2020]

Variants listed in the table have been provided by the authors. GeneReviews staff have not independently verified the classification of variants.

GeneReviews follows the standard naming conventions of the Human Genome Variation Society (varnomen​.hgvs.org). See Quick Reference for an explanation of nomenclature.

1.

Genes from Table 1 in alphabetic order

2.

Variant designation that does not conform to current naming conventions

3.
4.

Nucleotide change affects the last nucleotide position of exon 13 and leads to aberrant splicing and deletion of exon 13 [Donovan et al 2020]

Chapter Notes

Acknowledgments

The authors express their sincere gratitude to the individuals with Fanconi anemia (FA) and their families for their participation in numerous studies and for their essential contributions to advancing the field. We also extend special thanks to the clinicians and researchers whose unwavering scientific and clinical efforts continue to deepen our understanding of the disease and improve outcomes for individuals with FA.

Author History

Blanche P Alter, MD, MPH, FAAP; National Cancer Institute (2011-2016)
Alan D'Andrea, MD; Dana Farber Cancer Institute (2002-2007)
Christen L Ebens, MD, MPH (2021-present)
Gary Kupfer, MD; Yale University School of Medicine (2011-2016)
Parinda A Mehta, MD (2016-present)
Lisa Moreau, MS; Dana Farber Cancer Institute (2002-2007)
Akiko Shimamura, MD, PhD; Dana Farber Cancer Institute (2002-2007)
Toshiyasu Taniguchi, MD, PhD; Fred Hutchinson Cancer Research Center (2007-2011)
Jakub Tolar, MD, PhD; University of Minnesota (2016-2021)

Revision History

  • 15 January 2026 (sw) Comprehensive update posted live
  • 3 June 2021 (sw) Comprehensive update posted live
  • 22 September 2016 (sw) Comprehensive update posted live
  • 10 February 2011 (me) Comprehensive update posted live
  • 22 June 2007 (me) Comprehensive update posted live
  • 13 September 2004 (me) Comprehensive update posted live
  • 14 February 2002 (me) Review posted live
  • 31 May 2001 (as) Original submission

References

Literature Cited

  • Adamo A, Collis SJ, Adelman CA, Silva N, Horejsi Z, Ward JD, Martinez-Perez E, Boulton SJ, La Volpe A. Preventing nonhomologous end joining suppresses DNA repair defects of Fanconi anemia. Mol Cell. 2010;39:25–35. [PubMed: 20598602]
  • Agarwal R, Bertaina A, Soco C, Long-Boyle JR, Saini G, Kunte N, Hiroshima L, Chan YY, Willner H, Krampf MR, Nofal R, Barbarito G, Sen S, Van Hentenryck M, Walck E, Scheck A, Perriman RJ, Bouge A, Istomina E, Din HN, Klinger EF, Cheng JC, Wlodarski MW, Boelens JJ, Shizuru JA, Pang WW, Weinberg K, Parkman R, Roncarolo MG, Porteus M, Czechowicz A. Irradiation- and busulfan-free stem cell transplantation in Fanconi anemia using an anti-CD117 antibody: a phase 1b trial. Nat Med. 2025;31:3183-90. [PMC free article: PMC12443608] [PubMed: 40696207]
  • Al-Hawsawi ZM, Al-Zaid MA, Barnawi AI, Yassine SM. Fanconi anemia associated with moyamoya disease in Saudi Arabia. Saudi Med J. 2015;36:233-5. [PMC free article: PMC4375704] [PubMed: 25719591]
  • Alter BP. The association between FANCD1/BRCA2 mutations and leukaemia. Br J Haematol. 2006;133:446–8. [PubMed: 16643458]
  • Alter BP. Fanconi anemia and the development of leukemia. Best Pract Res Clin Haematol. 2014;27:214-21. [PMC free article: PMC4254647] [PubMed: 25455269]
  • Alter BP, Best AF. Frequency of heterozygous germline pathogenic variants in genes for Fanconi anemia in patients with non-BRCA1/BRCA2 breast cancer: a meta-analysis. Breast Cancer Res Treat. 2020;182:465-76. [PubMed: 32488392]
  • Alter BP, Frissora CL, Halperin DS, Freedman MH, Chitkara U, Alvarez E, Lynch L, Adler-Brecher B, Auerbach AD. Fanconi's anaemia and pregnancy. Br J Haematol. 1991;77:410-8. [PubMed: 2012768]
  • Alter BP, Giri N, McReynolds LJ, Altintas B. Fanconi anaemia: a syndrome with distinct subgroups. Br J Haematol. 2022;197:467-74. [PMC free article: PMC11844804] [PubMed: 35191533]
  • Alter BP, Giri N, Savage SA, Rosenberg PS. Cancer in the National Cancer Institute inherited bone marrow failure syndrome cohort after fifteen years of follow-up. Haematologica. 2018;103:30-9. [PMC free article: PMC5777188] [PubMed: 29051281]
  • Alter BP, Rosenberg PS, Brody LC. Clinical and molecular features associated with biallelic mutations in FANCD1/BRCA2. J Med Genet. 2007;44:1–9. [PMC free article: PMC2597904] [PubMed: 16825431]
  • Altintas B, Giri N, McReynolds LJ, Best A, Alter BP. Genotype-phenotype and outcome associations in patients with Fanconi anemia: the National Cancer Institute cohort. Haematologica. 2023;108:69-82. [PMC free article: PMC9827153] [PubMed: 35417938]
  • Altintas B, Stacy A, Gettinger K, Wilson DB, Shinawi MS. RAD51-related Fanconi anemia: expanding the phenotypic spectrum and strong association with VACTERL. Clin Genet. 2025. Epub ahead of print. [PubMed: 41017074]
  • Ameziane N, May P, Haitjema A, van de Vrugt HJ, van Rossum-Fikkert SE, Ristic D, Williams GJ, Balk J, Rockx D, Li H, Rooimans MA, Oostra AB, Velleuer E, Dietrich R, Bleijerveld OB, Maarten Altelaar AF, Meijers-Heijboer H, Joenje H, Glusman G, Roach J, Hood L, Galas D, Wyman C, Balling R, den Dunnen J, de Winter JP, Kanaar R, Gelinas R, Dorsman JC. A novel Fanconi anaemia subtype associated with a dominant-negative mutation in RAD51. Nat Commun. 2015;6:8829. [PMC free article: PMC4703882] [PubMed: 26681308]
  • Andreassen PR, D'Andrea AD, Taniguchi T. ATR couples FANCD2 monoubiquitination to the DNA-damage response. Genes Dev. 2004;18:1958–63. [PMC free article: PMC514175] [PubMed: 15314022]
  • Auerbach AD. Diagnosis of Fanconi anemia by diepoxybutane analysis. Curr Protoc Hum Genet. 2015;85:8 7 1-8 7 17. [PMC free article: PMC4408609] [PubMed: 25827349]
  • Auerbach AD, Greenbaum J, Pujara K, Batish SD, Bitencourt MA, Kokemohr I, Schneider H, Lobitzc S, Pasquini R, Giampietro PF, Hanenberg H, Levran O, et al. Spectrum of sequence variation in the FANCG gene: an International Fanconi Anemia Registry (IFAR) study. Hum Mutat. 2003;21:158–68. [PubMed: 12552564]
  • Barbus C, Rayannavar A, Miller BS, Jenkins MJ, Addo OY, Rayes A, Ahrweiler N, Olson A, Pohlkamp Z, Wagner JE, MacMillan ML. Development of specific growth charts for children with Fanconi anemia. Am J Med Genet A. 2024;194:e63554. [PubMed: 38317562]
  • Barnum JL, Petryk A, Zhang L, DeFor TE, Baker KS, Steinberger J, Nathan B, Wagner JE, MacMillan ML. Endocrinopathies, bone health, and insulin resistance in patients with Fanconi anemia after hematopoietic cell transplantation. Biol Blood Marrow Transplant. 2016;22:1487-92. [PMC free article: PMC5545800] [PubMed: 27180116]
  • Bonfim C, Ribeiro L, Nichele S, Loth G, Bitencourt M, Koliski A, Kuwahara C, Fabro AL, Pereira NF, Pilonetto D, Thakar M, Kiem HP, Page K, Fuchs EJ, Eapen M, Pasquini R. Haploidentical bone marrow transplantation with post-transplant cyclophosphamide for children and adolescents with Fanconi anemia. Biol Blood Marrow Transplant. 2017;23:310-17. [PubMed: 27832981]
  • Bonfim C, Ribeiro L, Nichele S, Bitencourt M, Loth G, Koliski A, Funke VAM, Pilonetto DV, Pereira NF, Flowers MED, Velleuer E, Dietrich R, Fasth A, Torres-Pereira CC, Pedruzzi P, Eapen M, Pasquini R. Long-term survival, organ function, and malignancy after hematopoietic stem cell transplantation for Fanconi anemia. Biol Blood Marrow Transplant. 2016;22:1257-63. [PubMed: 26976241]
  • Bottega R, Nicchia E, Cappelli E, Ravera S, De Rocco D, Faleschini M, Corsolini F, Pierri F, Calvillo M, Russo G, Casazza G, Ramenghi U, Farruggia P, Dufour C, Savoia A. Hypomorphic FANCA mutations correlate with mild mitochondrial and clinical phenotype in Fanconi anemia. Haematologica. 2018;103:417–26. [PMC free article: PMC5830397] [PubMed: 29269525]
  • Callén E, Casado JA, Tischkowitz MD, Bueren JA, Creus A, Marcos R, Dasi A, Estella JM, Munoz A, Ortega JJ, de Winter J, Joenje H, Schindler D, Hanenberg H, Hodgson SV, Mathew CG, Surralles J. A common founder mutation in FANCA underlies the world's highest prevalence of Fanconi anemia in Gypsy families from Spain. Blood. 2005;105:1946-9. [PubMed: 15522956]
  • Cappadocia J, Maxwell KN, Nathanson KL, Bagley S, Powers J, Halper-Stromberg E, Roth JJ, Domchek S, Shah PD. Exploration of possible association of BRIP1 pathogenic variants with central nervous system cancers in an institutional cohort. J Med Genet. 2025;62:720-3. [PubMed: 40780707]
  • Castella M, Pujol R, Callén E, Trujillo JP, Casado JA, Gille H, Lach FP, Auerbach AD, Schindler D, Benítez J, Porto B, Ferro T, Muñoz A, Sevilla J, Madero L, Cela E, Beléndez C, de Heredia CD, Olivé T, de Toledo JS, Badell I, Torrent M, Estella J, Dasí A, Rodríguez-Villa A, Gómez P, Barbot J, Tapia M, Molinés A, Figuera A, Bueren JA, Surrallés J. Origin, functional role, and clinical impact of Fanconi anemia FANCA mutations. Blood. 2011;117:3759–69. [PMC free article: PMC3083295] [PubMed: 21273304]
  • Ceccaldi R, Parmar K, Mouly E, Delord M, Kim JM, Regairaz M, Pla M, Vasquez N, Zhang QS, Pondarre C, Peffault de Latour R, Gluckman E, Cavazzana-Calvo M, Leblanc T, Larghero J, Grompe M, Socie G, D'Andrea AD, Soulier J. Bone marrow failure in Fanconi anemia is triggered by an exacerbated p53/p21 DNA damage response that impairs hematopoietic stem and progenitor cells. Cell Stem Cell. 2012;11:36-49. [PMC free article: PMC3392433] [PubMed: 22683204]
  • Cerejeira A, Amoedo P, Coelho AR, Silva R, Pedrosa A, Nogueira A, Azevedo F. Recurrent Sweet syndrome presenting in a figurate pattern in a patient with Fanconi anemia. Int J Dermatol. 2022;61:e171-e173. [PubMed: 34403507]
  • Ciccia A, Ling C, Coulthard R, Yan Z, Xue Y, Meetei AR. Laghmani el H, Joenje H, McDonald N, de Winter JP, Wang W, West SC. Identification of FAAP24, a Fanconi anemia core complex protein that interacts with FANCM. Mol Cell. 2007;25:331–43. [PubMed: 17289582]
  • Cioc AM, Wagner JE, MacMillan ML, DeFor T, Hirsch B. Diagnosis of myelodysplastic syndrome among a cohort of 119 patients with fanconi anemia: morphologic and cytogenetic characteristics. Am J Clin Pathol. 2010;133:92-100. [PMC free article: PMC5467447] [PubMed: 20023263]
  • Cohen N, Berant M, Simon J. Moyamoya and Fanconi's anemia. Pediatrics. 1980;65:804-5. [PubMed: 7367089]
  • Cox DM, Nelson KL, Clytone M, Collins DL. Hereditary cancer screening: case reports and review of literature on ten Ashkenazi Jewish founder mutations. Mol Genet Genomic Med. 2018;6:1236-42. [PMC free article: PMC6305650] [PubMed: 30152102]
  • Deans AJ, West SC. FANCM connects the genome instability disorders Bloom's syndrome and Fanconi Anemia. Mol Cell. 2009;36:943–53. [PubMed: 20064461]
  • Deng J, Altintas B, Haley JS, Kim J, Ramos M, Carey DJ, Stewart DR, McReynolds LJ. Most Fanconi anemia heterozygotes are not at increased cancer risk: a genome-first DiscovEHR cohort population study. Genet Med. 2024 Mar;26(3):101042. [PMC free article: PMC10939803] [PubMed: 38063144]
  • de Vries Y, Lwiwski N, Levitus M, Kuyt B, Israels SJ, Arwert F, Zwaan M, Greenberg CR, Alter BP, Joenje H, Meijers-Heijboer H. A Dutch Fanconi anemia FANCC founder mutation in Canadian Manitoba Mennonites. Anemia. 2012;2012:865170. [PMC free article: PMC3372307] [PubMed: 22701786]
  • D'Incan M. [Cutaneous T-cell lymphomas]. Bull Cancer. 2025;112:1208-24. [PubMed: 39510908]
  • Donovan FX, Solanki A, Mori M, Chavan N, George M, C SK, Okuno Y, Muramastsu H, Yoshida K, Shimamoto A, Takaori-Kondo A, Yabe H, Ogawa S, Kojima S, Yabe M, Ramanagoudr-Bhojappa R, Smogorzewska A, Mohan S, Rajendran A, Auerbach AD, Takata M, Chandrasekharappa SC, Vundinti BR. A founder variant in the South Asian population leads to a high prevalence of FANCL Fanconi anemia cases in India. Hum Mutat. 2020;41:122-8. [PMC free article: PMC7362330] [PubMed: 31513304]
  • Douglass AB, Harris L, Pazderka F. Monozygotic twins concordant for the narcoleptic syndrome. Neurology. 1989;39:140-1. [PubMed: 2909903]
  • Du W, Adam Z, Rani R, Zhang X, Pang Q. Oxidative stress in Fanconi anemia hematopoiesis and disease progression. Antioxid Redox Signal. 2008;10:1909-21. [PMC free article: PMC2695607] [PubMed: 18627348]
  • Ebens CL, DeFor TE, Tryon R, Wagner JE, MacMillan ML. Comparable outcomes after HLA-matched sibling and alternative donor hematopoietic cell transplantation for children with Fanconi anemia and severe aplastic anemia. Biol Blood Marrow Transplant. 2018;24:765–71. [PMC free article: PMC6915968] [PubMed: 29203412]
  • Ebens CL, MacMillan ML, Wagner JE. Hematopoietic cell transplantation in Fanconi anemia: current evidence, challenges and recommendations. Expert Rev Hematol. 2017;10:81–97. [PMC free article: PMC6089510] [PubMed: 27929686]
  • Faivre L, Guardiola P, Lewis C, Dokal I, Ebell W, Zatterale A, Altay C, Poole J, Stones D, Kwee ML, van Weel-Sipman M, Havenga C, Morgan N, de Winter J, Digweed M, Savoia A, Pronk J, de Ravel T, Jansen S, Joenje H, Gluckman E, Mathew CG. Association of complementation group and mutation type with clinical outcome in Fanconi anemia. European Fanconi Anemia Research Group. Blood. 2000;96:4064–70. [PubMed: 11110674]
  • Faivre L, Portnoi MF, Pals G, Stoppa-Lyonnet D, Le Merrer M, Thauvin-Robinet C, Huet F, Mathew CG, Joenje H, Verloes A, Baumann C. Should chromosome breakage studies be performed in patients with VACTERL association? Am J Med Genet A. 2005;137:55–8. [PubMed: 16015582]
  • Fiesco-Roa MO, Giri N, McReynolds LJ, Fest AF, Alter BP. Genotype-phenotype associations in Fanconi anemia: a literature review. Blood Rev. 2019;37:100589. [PMC free article: PMC6730648] [PubMed: 31351673]
  • Figlioli G, Billaud A, Peterlongo P. Genotype-phenotype correlations in biallelic carriers of FANCM protein truncating variants: a systematic literature review. Mutat Res Rev Mutat Res. 2025;796:108559. [PubMed: 40818381]
  • Futaki M, Yamashita T, Yagasaki H, Toda T, Yabe M, Kato S, Asano S, Nakahata T. The IVS4 + 4 A to T mutation of the Fanconi anemia gene FANCC is not associated with a severe phenotype in Japanese patients. Blood. 2000;95:1493–8. [PubMed: 10666230]
  • Gandhi M, Rac MWF, McKinney J, et al. Radial ray malformation. Am J Obstet Gynecol. 2019;221:B16–18. [PubMed: 31787159]
  • García-de Teresa B, Frias S, Molina B, Villarreal MT, Rodriguez A, Carnevale A, Lopez-Hernandez G, Vollbrechtshausen L, Olaya-Vargas A, Torres L. FANCC Dutch founder mutation in a Mennonite family from Tamaulipas, Mexico. Mol Genet Genomic Med. 2019;7:e710. [PMC free article: PMC6565560] [PubMed: 31044565]
  • Garcia-Higuera I, Taniguchi T, Ganesan S, Meyn MS, Timmers C, Hejna J, Grompe M, D'Andrea AD. Interaction of the Fanconi anemia proteins and BRCA1 in a common pathway. Mol Cell. 2001;7:249. [PubMed: 11239454]
  • Geilmann S, Solstad R, Palmquist R, Flores Daboub J, Botto LD, Grubb PH, Bonkowsky JL, Longo N, Malone Jenkins S. A novel RAD51 variant resulting in Fanconi anemia identified in an infant with multiple congenital anomalies. Clin Case Rep. 2023;11:e6810. [PMC free article: PMC9850852] [PubMed: 36698515]
  • Giampietro PF, Adler-Brecher B, Verlander PC, Pavlakis SG, Davis JG, Auerbach AD. The need for more accurate and timely diagnosis in Fanconi anemia: a report from the International Fanconi Anemia Registry. Pediatrics. 1993;91:1116-20. [PubMed: 8502512]
  • Giardino S, de Latour RP, Aljurf M, Eikema DJ, Bosman P, Bertrand Y, Tbakhi A, Holter W, Bornhäuser M, Rössig C, Burkhardt B, Zecca M, Afanasyev B, Michel G, Ganser A, Alseraihy A, Ayas M, Uckan-Cetinkaya D, Bruno B, Patrick K, Bader P, Itälä-Remes M, Rocha V, Jubert C, Diaz MA, Shaw PJ, Junior LGD, Locatelli F, Kröger N, Faraci M, Pierri F, Lanino E, Miano M, Risitano A, Robin M, Dufour C, et al. Outcome of patients with Fanconi anemia developing myelodysplasia and acute leukemia who received allogeneic hematopoietic stem cell transplantation: a retrospective analysis on behalf of EBMT group. Am J Hematol. 2020;95:809–16. [PubMed: 32267023]
  • Giri N, Batista DL, Alter BP, Stratakis CA. Endocrine abnormalities in patients with Fanconi anemia. J Clin Endocrinol Metab. 2007;92:2624-31. [PubMed: 17426088]
  • Giri N, Reed HD, Stratton P, Savage SA, Alter BP. Pregnancy outcomes in mothers of offspring with inherited bone marrow failure syndromes. Pediatr Blood Cancer. 2018;65:.10.1002/pbc.26757 [PMC free article: PMC7408308] [PubMed: 28801981] [CrossRef]
  • Giulino L, Guinan EC, Gillio AP, Drachtman RA, Teruya-Feldstein J, Boulad F. Sweet syndrome in patients with Fanconi anaemia: association with extracutaneous manifestations and progression of haematological disease. Br J Haematol. 2011;154:278–81. [PubMed: 21501135]
  • Gregg AR, Aarabi M, Klugman S, Leach NT, Bashford MT, Goldwaser T, Chen E, Sparks TN, Reddi HV, Rajkovic A, Dungan JS; ACMG Professional Practice and Guidelines Committee. Screening for autosomal recessive and X-linked conditions during pregnancy and preconception: a practice resource of the American College of Medical Genetics and Genomics (ACMG). Genet Med. 2021;23:1793-806. [PMC free article: PMC8488021] [PubMed: 34285390]
  • Hartmann L, Neveling K, Borkens S, Schneider H, Freund M, Grassman E, Theiss S, Wawer A, Burdach S, Auerbach AD, Schindler D, Hanenberg H, Schaal H. Correct mRNA processing at a mutant TT splice donor in FANCC ameliorates the clinical phenotype in patients and is enhanced by delivery of suppressor U1 snRNAs. American Journal of Human Genetics. 2010;87:480–93. [PMC free article: PMC2948791] [PubMed: 20869034]
  • Ho TV, Schärer OD. Translesion DNA synthesis polymerases in DNA interstrand crosslink repair. Environ Mol Mutagen. 2010;51:552–66. [PubMed: 20658647]
  • Hoover A, Turcotte LM, Phelan R, Barbus C, Rayannavar A, Miller BS, Reardon EE, Theis-Mahon N, MacMillan ML. Longitudinal clinical manifestations of Fanconi anemia: A systematized review. Blood Rev. 2024;68:101225. [PMC free article: PMC11568946] [PubMed: 39107201]
  • Howlett NG, Taniguchi T, Olson S, Cox B, Waisfisz Q, De Die-Smulders C, Persky N, Grompe M, Joenje H, Pals G, Ikeda H, Fox EA, D'Andrea AD. Biallelic inactivation of BRCA2 in Fanconi anemia. Science. 2002;297:606–9. [PubMed: 12065746]
  • Huang M, D'Andrea AD. A new nuclease member of the FAN club. Nat Struct Mol Biol. 2010;17:926–8. [PMC free article: PMC2945811] [PubMed: 20683477]
  • Huang SJ, Amendola LM, Sternen DL. Variation among DNA banking consent forms: points for clinicians to bank on. J Community Genet. 2022;13:389–97. [PMC free article: PMC9314484] [PubMed: 35834113]
  • Iriondo J, Zubicaray J, Rio P, Catala A, Solsona M, Sanz A, Gomez A, Sebastian E, de la Cruz A, Galan A, Navarro S, Larcher L, de Andoin NG, Uriz JJ, Vagace JM, Gonzalez de Pablo J, Pujol MR, Nicoletti E, Surralles J, Martin-Prado S, Schwartz JD, Soulier J, Bueren JA, Sevilla J. Eltrombopag for bone marrow failure in Fanconi anemia: results from the Phase II clinical trial FANCREV. Eur J Haematol. 2025;115:403-12. [PubMed: 40665878]
  • Joenje H. Fanconi anaemia complementation groups in Germany and the Netherlands. European Fanconi Anaemia Research group. Hum Genet. 1996;97:280-2. [PubMed: 8786063]
  • Johnson-Tesch BA, Gawande RS, Zhang L, MacMillan ML, Nascene DR. Fanconi anemia: correlating central nervous system malformations and genetic complementation groups. Pediatr Radiol. 2017;47:868-76. [PubMed: 28283722]
  • Jónsson H, Sulem P, Kehr B, Kristmundsdottir S, Zink F, Hjartarson E, Hardarson MT, Hjorleifsson KE, Eggertsson HP, Gudjonsson SA, Ward LD, Arnadottir GA, Helgason EA, Helgason H, Gylfason A, Jonasdottir A, Jonasdottir A, Rafnar T, Frigge M, Stacey SN, Th Magnusson O, Thorsteinsdottir U, Masson G, Kong A, Halldorsson BV, Helgason A, Gudbjartsson DF, Stefansson K. Parental influence on human germline de novo mutations in 1,548 trios from Iceland. Nature. 2017;549:519–22. [PubMed: 28959963]
  • Jung M, Ramanagoudr-Bhojappa R, van Twest S, Rosti RO, Murphy V, Tan W, Donovan FX, Lach FP, Kimble DC, Jiang CS, Vaughan R, Mehta PA, Pierri F, Dufour C, Auerbach AD, Deans AJ, Smogorzewska A, Chandrasekharappa SC. Association of clinical severity with FANCB variant type in Fanconi anemia. Blood. 2020;135:1588–1602. [PMC free article: PMC7193183] [PubMed: 32106311]
  • Kahraman S, Beyazyurek C, Yesilipek MA, Ozturk G, Ertem M, Anak S, Kansoy S, Aksoylar S, Kuşkonmaz B, Oniz H, Slavin S, Karakas Z, Tac HA, Gulum N, Ekmekci GC. Successful haematopoietic stem cell transplantation in 44 children from healthy siblings conceived after preimplantation HLA matching. Reprod Biomed Online. 2014;29:340–51. [PubMed: 25066893]
  • Kalejaiye A, Giri N, Brewer CC, Zalewski CK, King KA, Adams CD, Rosenberg PS, Kim HJ, Alter BP. Otologic manifestations of Fanconi anemia and other inherited bone marrow failure syndromes. Pediatr Blood Cancer. 2016;63:2139-45. [PubMed: 27428025]
  • Kato Y, Alavattam KG, Sin H-S, Meetei AR, Pang Q, Andreassen PR, Namekawa SH. FANCB is essential in the male germline and regulates H3K9 methylation on the sex chromosomes during meiosis. Hum Mol Genet. 2015;24:5234–49. [PMC free article: PMC4550819] [PubMed: 26123487]
  • Kesici S, Unal S, Kuskonmaz B, Aytac S, Cetin M, Gumruk F. Fanconi anemia: a single center experience of a large cohort. Turk J Pediatr. 2019;61:477-84. [PubMed: 31990462]
  • Kim Y, Lach FP, Desetty R, Hanenberg H, Auerbach AD, Smogorzewska A. Mutations of the SLX4 gene in Fanconi anemia. Nat Genet. 2011;43:142-6. [PMC free article: PMC3345287] [PubMed: 21240275]
  • Knies K, Inano S, Ramirez MJ, Ishiai M, Surralles J, Takata M, Schindler D. Biallelic mutations in the ubiquitin ligase RFWD3 cause Fanconi anemia. J Clin Invest. 2017;127:3013-27. [PMC free article: PMC5531404] [PubMed: 28691929]
  • Knipscheer P, Räschle M, Smogorzewska A, Enoiu M, Ho TV, Schärer OD, Elledge SJ, Walter JC. The Fanconi anemia pathway promotes replication-dependent DNA interstrand cross-link repair. Science. 2009;326:1698–701. [PMC free article: PMC2909596] [PubMed: 19965384]
  • Kocagil S, Safak IN, Sarac E, Aydin C, Artan S, Kirel B. Further evidence for RFWD3 gene causing Fanconi anemia complementation group W: detailed clinical report of the second case in the literature. Mol Syndromol. 2023;14:509-15. [PMC free article: PMC10697762] [PubMed: 38058754]
  • Koo J, Grom-Mansencal I, Howell JC, Rios JM, Mehta PA, Davies SM, Myers KC. Gonadal function in pediatric Fanconi anemia patients treated with hematopoietic stem cell transplant. Haematologica. 2023;108:2358-68. [PMC free article: PMC10483354] [PubMed: 36891729]
  • Korthof ET, Svahn J, Peffault de Latour R, Terranova P, Moins-Teisserenc H, Socie G, Soulier J, Kok M, Bredius RG, van Tol M, Jol-van der Zijde EC, Pistorio A, Corsolini F, Parodi A, Battaglia F, Pistoia V, Dufour C, Cappelli E. Immunological profile of Fanconi anemia: a multicentric retrospective analysis of 61 patients. Am J Hematol. 2013;88:472-6. [PubMed: 23483621]
  • Kotiuga J, Daspe ME, Dawson SJ, Bergeron S, Vaillancourt-Morel MP. Empathic accuracy in couples: a daily diary study of relationship-related emotions. Emotion. 2025;25:1690-703. [PubMed: 40244996]
  • Kovuru N, Mochizuki-Kashio M, Menna T, Jeffrey G, Hong Y, Me Yoon Y, Zhang Z, Kurre P. Deregulated protein homeostasis constrains fetal hematopoietic stem cell pool expansion in Fanconi anemia. Nat Commun. 2024;15:1852. [PMC free article: PMC10904799] [PubMed: 38424108]
  • Kuehl J, Xue Y, Yuan F, Ramanagoudr-Bhojappa R, Pickel S, Kalb R, Chandrasekharappa SC, Wang W, Zhang Y, Schindler D. Genetic inactivation of FAAP100 causes Fanconi anemia due to disruption of the monoubiquitin ligase core complex. J Clin Invest. 2025;135:e187323. [PMC free article: PMC12126235] [PubMed: 40232843]
  • Kutler DI, Auerbach AD. Fanconi anemia in Ashkenazi Jews. Fam Cancer. 2004;3:241-8. [PubMed: 15516848]
  • Kutler DI, Patel K, Auerbach A, Kennedy J, Lach F, Sanborn E, Cohen M, Kuhel W, Smogorzewska A. Natural history and management of Fanconi anemia patients with head and neck cancer: a 10-year follow-up. Laryngoscope. 2016;126:870–9. [PMC free article: PMC4803627] [PubMed: 26484938]
  • Kutler DI, Singh B, Satagopan J, Batish SD, Berwick M, Giampietro PF, Hanenberg H, Auerbach AD. A 20-year perspective on the International Fanconi Anemia Registry (IFAR). Blood. 2003;101:1249–56. [PubMed: 12393516]
  • Lee RH, Kang H, Yom SS, Smogorzewska A, Johnson DE, Grandis JR. Treatment of Fanconi anemia-associated head and neck cancer: opportunities to improve outcomes. Clin Cancer Res. 2021;27:5168-87. [PMC free article: PMC8626541] [PubMed: 34045293]
  • Levitus M, Waisfisz Q, Godthelp BC, de Vries Y, Hussain S, Wiegant WW, Elghalbzouri-Maghrani E, Steltenpool J, Rooimans MA, Pals G, Arwert F, Mathew CG, Zdzienicka MZ, Hiom K, De Winter JP, Joenje H. The DNA helicase BRIP1 is defective in Fanconi anemia complementation group J. Nat Genet. 2005;37:934–5. [PubMed: 16116423]
  • Levran O, Attwooll C, Henry RT, Milton KL, Neveling K, Rio P, Batish SD, Kalb R, Velleuer E, Barral S, Ott J, Petrini J, Schindler D, Hanenberg H, Auerbach AD. The BRCA1-interacting helicase BRIP1 is deficient in Fanconi anemia. Nat Genet. 2005;37:931–3. [PubMed: 16116424]
  • Ling C, Ishiai M, Ali AM, Medhurst AL, Neveling K, Kalb R, Yan Z, Xue Y, Oostra AB, Auerbach AD, Hoatlin ME, Schindler D, Joenje H, de Winter JP, Takata M, Meetei AR, Wang W. FAAP100 is essential for activation of the Fanconi anemia-associated DNA damage response pathway. EMBO J. 2007;26:2104–14. [PMC free article: PMC1852792] [PubMed: 17396147]
  • Litman R, Peng M, Jin Z, Zhang F, Zhang J, Powell S, Andreassen PR, Cantor SB. BACH1 is critical for homologous recombination and appears to be the Fanconi anemia gene product FANCJ. Cancer Cell. 2005;8:255–65. [PubMed: 16153896]
  • MacMillan ML, DeFor TE, Young JA, Dusenbery KE, Blazar BR, Slungaard A, Zierhut H, Weisdorf DJ, Wagner JE. Alternative donor hematopoietic cell transplantation for Fanconi anemia. Blood. 2015;125:3798–804. [PMC free article: PMC4463740] [PubMed: 25824692]
  • Masserot C, Peffault de Latour R, Rocha V, Leblanc T, Rigolet A, Pascal F, Janin A, Soulier J, Gluckman E, Socié G. Head and neck squamous cell carcinoma in 13 patients with Fanconi anemia after hematopoietic stem cell transplantation. Cancer. 2008;113:3315–22. [PubMed: 18831513]
  • Mateos MK, Ajuyah P, Fuentes-Bolanos N, El-Kamand S, Barahona P, Altekoester AK, Mayoh C, Holliday H, Liu J, Cui L, Pfaff E, Mackay A, Resnick AC, Pinese M, Lau LMS, Khuong-Quang DA, Dias K, Goudie C, Salkeld A, Rokita JL, Jones DTW, Juretic N, Hayden E, Pfister SM, Kramm CM, Blattner-Johnson M, Jabado N, Tsoli M, Vittorio O, Mueller S, Guo Y, Tucker K, Waszak SM, Perreault S, Jones C, Wong-Erasmus M, Cowley MJ, Ziegler DS. Germline analysis of an international cohort of pediatric diffuse midline glioma patients. Neuro Oncol. 2025;27:1849-63. [PMC free article: PMC12417819] [PubMed: 40072012]
  • McCauley J, Masand N, McGowan R, Rajagopalan S, Hunter A, Michaud JL, Gibson K, Robertson J, Vaz F, Abbs S, Holden ST. X-linked VACTERL with hydrocephalus syndrome: further delineation of the phenotype caused by FANCB mutations. Am J Med Genet A. 2011;155A:2370–80. [PubMed: 21910217]
  • McDermott MB, Corbally MT, O'Marcaigh AS. Extracutaneous Sweet syndrome involving the gastrointestinal tract in a patient with Fanconi anemia. J Pediatr Hematol Oncol. 2001;23:59-62. [PubMed: 11196274]
  • McReynolds LJ, Biswas K, Giri N, Sharan SK, Alter BP. Genotype-cancer association in patients with Fanconi anemia due to pathogenic variants in FANCD1 (BRCA2) or FANCN (PALB2). Cancer Genet. 2021;258-259:101-9. [PMC free article: PMC8628873] [PubMed: 34687993]
  • Meetei AR, Sechi S, Wallisch M, Yang D, Young MK, Joenje H, Hoatlin ME, Wang W. A multiprotein nuclear complex connects Fanconi anemia and Bloom syndrome. Mol Cell Biol. 2003;23:3417–26. [PMC free article: PMC164758] [PubMed: 12724401]
  • Mehta PA, Davies SM, Leemhuis T, Myers K, Kernan NA, Prockop SE, Scaradavou A, O'Reilly RJ, Williams DA, Lehmann L, Guinan E, Margolis D, Baker KS, Lane A, Boulad F. Radiation-free, alternative donor HCT for Fanconi anemia patients: results from a prospective multi-institutional study. Blood. 2017;129:2308–15. [PMC free article: PMC5766838] [PubMed: 28179273]
  • Mehta PA, Harris RE, Davies SM, Kim MO, Mueller R, Lampkin B, Mo J, Myers K, Smolarek TA. Numerical chromosomal changes and risk of development of myelodysplastic syndrome—acute myeloid leukemia in patients with Fanconi anemia. Cancer Genet Cytogenet. 2010;203:180–6. [PubMed: 21156231]
  • Mehta PA, Ileri T, Harris RE, Williams DA, Mo J, Smolarek T, Auerbach AD, Kelly P, Davies SM. Chemotherapy for myeloid malignancy in children with Fanconi anemia. Pediatr Blood Cancer. 2007;48:668–72. [PubMed: 16609946]
  • Mehta PA, Nelson A, Loveless S, Lane A, Fukuda T, Teusink-Cross A, Elder D, Lagory D, Miller E, Cancelas JA, Howell J, Zhao J, Mizuno K, Myers KC, Lake K, McIntosh K, Setchell KDR, Luebbering N, Edwards S, Chihanga T, Wells SI, Davies SM. Phase 1 study of quercetin, a natural antioxidant for children and young adults with Fanconi anemia. Blood Adv. 2025;9:1927-39. [PMC free article: PMC12008688] [PubMed: 39820512]
  • Mehta PA, Wilhelm J, Leemhuis T, Baker KS, Boulad F, Myers K, Mallhi K, Harris M, Brooks K, Mueller R, Goodridge E, Hunter M, Lane A, Davies SM. 114 - Excellent progress in overall transplant outcomes for patients with Fanconi anemia including adult FA patients and those with myelodysplastic syndrome using risk adjusted cytoreduction without radiation. Transplant Cell Ther. 2023;29:S90-S1.
  • Meyer S, Neitzel H, Tonnies H. Chromosomal aberrations associated with clonal evolution and leukemic transformation in fanconi anemia: clinical and biological implications. Anemia. 2012;2012:349837. [PMC free article: PMC3366199] [PubMed: 22675616]
  • Mitchell R, Wagner JE, Hirsch B. Hematopoietic cell transplantation for acute leukaemia and advances myelodysplastic syndrome in Fanconi anemia. Br J Haematol. 2014;164:384–95. [PMC free article: PMC4060801] [PubMed: 24172081]
  • Morgan NV, Essop F, Demuth I, de Ravel T, Jansen S, Tischkowitz M, Lewis CM, Wainwright L, Poole J, Joenje H, Digweed M, Krause A, Mathew CG. A common Fanconi anemia mutation in black populations of sub-Saharan Africa. Blood. 2005;105:3542-4. [PubMed: 15657175]
  • Murillo-Sanjuán L, Balmana J, de Pablo Garcia-Cuenca A, Lorente Guerrero J, Uria Oficialdegui ML, Carrasco E, Diaz-de-Heredia C. Post-hematopoietic stem cell transplant squamous cell carcinoma in patients with Fanconi anemia: a dreadful enemy. Clin Transl Oncol. 2022;24:388-92. [PubMed: 34417960]
  • Myers K, Davies SM, Harris RE, Spunt SL, Smolarek T, Zimmerman S, McMasters R, Wagner L, Mueller R, Auerbach AD, Mehta PA. The clinical phenotype of children with Fanconi anemia caused by biallelic FANCD1/BRCA2 mutations. Pediatr Blood Cancer. 2012;58:462–5. [PubMed: 21548014]
  • Myers KC, Sauter S, Zhang X, Bleesing JJ, Davies SM, Wells SI, Mehta PA, Kumar A, Marmer D, Marsh R, Brown D, Butsch Kovacic M. Impaired immune function in children and adults with Fanconi anemia. Pediatr Blood Cancer. 2017;64:.10.1002/pbc.26599 [PMC free article: PMC5639938] [PubMed: 28557197] [CrossRef]
  • Nabhan SK, Bitencourt MA, Duval M, Abecasis M, Dufour C, Boudjedir K, Rocha V, Socié G, Passweg J, Goi K, Sanders J, Snowden J, Yabe H, Pasquini R, Gluckman E; Aplastic Anaemia Working Party, EBMT. Fertility recovery and pregnancy after allogeneic hematopoietic stem cell transplantation in Fanconi anemia patients. Haematologica. 2010;95:1783–7. [PMC free article: PMC2948106] [PubMed: 20494929]
  • Nakanishi K, Taniguchi T, Ranganathan V, New HV, Moreau LA, Stotsky M, Mathew CG, Kastan MB, Weaver DT, D'Andrea AD. Interaction of FANCD2 and NBS1 in the DNA damage response. Nat Cell Biol. 2002;4:913-20. [PubMed: 12447395]
  • Nalepa G, Clapp DW. Fanconi anaemia and cancer: an intricate relationship. Nature Reviews Cancer. 2018;18:168–85. [PubMed: 29376519]
  • Ozenne V, Paradis V, Vullierme MP, Vilgrain V, Leblanc T, Belghiti J, Imbert A, Valla DC, Degos F. Liver tumours in patients with Fanconi anaemia: a report of three cases. Eur J Gastroenterol Hepatol. 2008;20:1036-9. [PubMed: 18787475]
  • Paustian L, Chao MM, Hanenberg H, Schindler D, Neitzel H, Kratz CP, Ebell W. Androgen therapy in Fanconi anemia: a retrospective analysis of 30 years in Germany. Pediatr Hematol Oncol. 2016;33:5–12. [PubMed: 26900943]
  • Pavlakis SG, Verlander PC, Gould RJ, Strimling BC, Auerbach AD. Fanconi anemia and moyamoya: evidence for an association. Neurology. 1995;45:998-1000. [PubMed: 7746424]
  • Peake JD, Noguchi E. Fanconi anemia: current insights regarding epidemiology, cancer, and DNA repair. Hum Genet. 2022;141:1811-36. [PubMed: 35596788]
  • Peffault de Latour R, Porcher R, Dalle JH, Aljurf M, Korthof ET, Svahn J, Willemze R, Barrenetxea C, Mialou V, Soulier J, Ayas M, Oneto R, Bacigalupo A, Marsh JC, Peters C, Socie G, Dufour C; FA Committee of the Severe Aplastic Anemia Working Party; Pediatric Working Party of the European Group for Blood and Marrow Transplantation. Allogeneic hematopoietic stem cell transplantation in Fanconi anemia: the European Group for Blood and Marrow Transplantation experience. Blood. 2013;122:4279-86. [PubMed: 24144640]
  • Peffault de Latour R, Soulier J. How I treat MDS and AML in Fanconi anemia. Blood. 2016;127:2971-9. [PubMed: 27020090]
  • Petryk A, Shaker RK, Giri N, Hollenberg AN, Rutter MM, Nathan B, Lodish M, Alter BP, Stratakis CA, Rose SR. Endocrine disorders in Fanconi anemia: recommendations from screening and treatment. J Clin Endocrinol Metab. 2015;100:803–11. [PMC free article: PMC4333044] [PubMed: 25575015]
  • Pollard JA, Furutani E, Liu S, Esrick E, Cohen LE, Bledsoe J, Liu CW, Lu K, de Haro MJR, Surralles J, Malsch M, Kuniholm A, Galvin A, Armant M, Kim AS, Ballotti K, Moreau L, Zhou Y, Babushok D, Boulad F, Carroll C, Hartung H, Hont A, Nakano T, Olson T, Sze SG, Thompson AA, Wlodarski MW, Gu X, Libermann TA, D'Andrea A, Grompe M, Weller E, Shimamura A. Metformin for treatment of cytopenias in children and young adults with Fanconi anemia. Blood Adv. 2022;6:3803-11. [PMC free article: PMC9631552] [PubMed: 35500223]
  • Quentin S, Cuccuini W, Ceccaldi R, Nibourel O, Pondarre C, Pages MP, Vasquez N, Dubois d'Enghien C, Larghero J, Peffault de Latour R, Rocha V, Dalle JH, Schneider P, Michallet M, Michel G, Baruchel A, Sigaux F, Gluckman E, Leblanc T, Stoppa-Lyonnet D, Preudhomme C, Socie G, Soulier J. Myelodysplasia and leukemia of Fanconi anemia are associated with a specific pattern of genomic abnormalities that includes cryptic RUNX1/AML1 lesions. Blood. 2011;117:e161-70. [PubMed: 21325596]
  • Radulovic I, Schundeln MM, Muller L, Ptok J, Honisch E, Niederacher D, Wiek C, Scheckenbach K, Leblanc T, Larcher L, Soulier J, Reinhardt D, Schaal H, Andreassen PR, Hanenberg H. A novel cancer risk prediction score for the natural course of FA patients with biallelic BRCA2/FANCD1 mutations. Hum Mol Genet. 2023;32:1836-49. [PubMed: 36721989]
  • Rahbari R, Wuster A, Lindsay SJ, Hardwick RJ, Alexandrov LB, Turki SA, Dominiczak A, Morris A, Porteous D, Smith B, Stratton MR, Hurles ME, et al. Timing, rates and spectra of human germline mutation. Nat Genet. 2016;48:126–33. [PMC free article: PMC4731925] [PubMed: 26656846]
  • Rai SK, Du W, Zhang J, Yu H, Deng Y, Fei P. Somatic gene mutations involved in DNA damage response/Fanconi anemia signaling are tissue- and cell-type specific in human solid tumors. Front Med (Lausanne). 2024;11:1462810. [PMC free article: PMC11483370] [PubMed: 39421870]
  • Rechitsky S, Kuliev A, San Ramon G, Tur-Kaspa I, Wang Y, Wang W, Wu X, Wang L, Leigh D, Cram DS. Single-molecule sequencing: a new approach for preimplantation testing and noninvasive prenatal diagnosis confirmation of fetal genotype. J Mol Diagn. 2020;22:220–7. [PubMed: 31751677]
  • Reid S, Schindler D, Hanenberg H, Barker K, Hanks S, Kalb R, Neveling K, Kelly P, Seal S, Freund M, Wurm M, Batish SD, Lach FP, Yetgin S, Neitzel H, Ariffin H, Tischkowitz M, Mathew CG, Auerbach AD, Rahman N. Biallelic mutations in PALB2 cause Fanconi anemia subtype FA-N and predispose to childhood cancer. Nat Genet. 2007;39:162–4. [PubMed: 17200671]
  • Ribeiro LL, Nichele S, Bitencourt M, Petterle R, Loth G, Pilonetto D, Bonfim C. Excellent option therapy of bone marrow failure in Fanconi anemia patients without full match donor. Blood. 2016;128:5075.
  • Ricci E, Bagnasco F, Pierri F, Risitano A, Farruggia P, Faraci M, Frieri C, Corti P, Ramenghi U, Quarello P, Barberi W, Menna G, Giagnuolo G, Pillon M, Miano M, Di Bartolomeo P, Santarone S, Zecca M, Mastrodicasa E, Mura R, Pinazzi B, Luti L, Licciardello M, Barone A, Veltroni M, Palazzi G, Verzegnassi F, Patriarca F, Onofrillo D, Cesaro S, Ghilardi R, D'Alba I, Angarano R, Arcuri L, Beccaria A, Tallone R, Zatterale A, Dufour C. Long-term outcome of Fanconi anemia patients from the Italian registry on behalf of the Marrow Failure Study Group of the AIEOP (Italian Association for Pediatric Haematology-Oncology). Am J Hematol. 2025;100:1387-96. [PMC free article: PMC12232516] [PubMed: 40478605]
  • Richards S, Aziz N, Bale S, Bick D, Das S, Gastier-Foster J, Grody WW, Hegde M, Lyon E, Spector E, Voelkerding K, Rehm HL, et al. Standards and guidelines for the interpretation of sequence variants: a joint consensus recommendation of the American College of Medical Genetics and Genomics and the Association for Molecular Pathology. Genet Med. 2015;17:405–24. [PMC free article: PMC4544753] [PubMed: 25741868]
  • Río P, Navarro S, Guenechea G, Sánchez-Domínguez R, Lamana ML, Yañez R, Casado JA, Mehta PA, Pujol MR, Surrallés J, Charrier S, Galy A, Segovia JC, Díaz de Heredia C, Sevilla J, Bueren JA. Engraftment and in vivo proliferation advantage of gene-corrected mobilized CD34(+) cells from Fanconi anemia patients. Blood. 2017;130:1535–42. [PubMed: 28801449]
  • Risitano AM, Marotta S, Calzone R, Grimaldi F, Zatterale A; RIAF Contributors. Twenty years of the Italian Fanconi Anemia Registry: where we stand and what remains to be learned. Haematologica. 2016;101:319-27. [PMC free article: PMC4815723] [PubMed: 26635036]
  • Rodríguez A, Zhang K, Farkkila A, Filiatrault J, Yang C, Velazquez M, Furutani E, Goldman DC, Garcia de Teresa B, Garza-Mayen G, McQueen K, Sambel LA, Molina B, Torres L, Gonzalez M, Vadillo E, Pelayo R, Fleming WH, Grompe M, Shimamura A, Hautaniemi S, Greenberger J, Frias S, Parmar K, D'Andrea AD. MYC promotes bone marrow stem cell dysfunction in Fanconi anemia. Cell Stem Cell. 2021;28:33-47 e8. [PMC free article: PMC7796920] [PubMed: 32997960]
  • Rose SR, Kim MO, Korbee L, Wilson KA, Douglas Ris M, Eyal O, Sherafat-Kazemzadeh R, Bollepalli S, Harris R, Jeng MR, Williams DA, Smith FO. Oxandrolone for the treatment of bone marrow failure in Fanconi anemia. Pediatr Blood Cancer. 2014;61:11–9. [PubMed: 24019220]
  • Rose SR, Myers KC, Rutter MM, Mueller R, Khoury JC, Mehta PA, Harris RE, Davies SM. Endocrine phenotype of children and adults with Fanconi anemia. Pediatr Blood Cancer. 2012;59:690-6. [PubMed: 22294495]
  • Rosenberg PS, Alter BP, Ebell W. Cancer risks in Fanconi anemia: findings from the German Fanconi Anemia Registry. Haematologica. 2008;93:511–7. [PubMed: 18322251]
  • Rosenberg PS, Greene MH, Alter BP. Cancer incidence in persons with Fanconi anemia. Blood. 2003;101:822-6. [PubMed: 12393424]
  • Rosenberg PS, Socié G, Alter BP, Gluckman E. Risk of head and neck squamous cell cancer and death in patients with Fanconi anemia who did and did not receive transplants. Blood. 2005;105:67–73. [PubMed: 15331448]
  • Rosenberg PS, Tamary H, Alter BP. How high are carrier frequencies of rare recessive syndromes? Contemporary estimates for Fanconi Anemia in the United States and Israel. Am J Med Genet A. 2011;155A:1877–83. [PMC free article: PMC3140593] [PubMed: 21739583]
  • Ruggiero JL, Freese R, Hook KP, Polcari IC, Maguiness SM, Boull C. Skin cancer and sun protection practices in Fanconi anemia patients: a cross-sectional study. J Am Acad Dermatol. 2022;86:179-81. [PubMed: 33465431]
  • Satty AM, Klein E, Mauguen A, Kunvarjee B, Boelens JJ, Cancio M, Curran KJ, Kernan NA, Prockop SE, Scaradavou A, Spitzer B, Tamari R, Ruggiero J, Torok-Castanza J, Mehta PA, O'Reilly RJ, Boulad F. T-cell depleted allogeneic hematopoietic stem cell transplant for the treatment of Fanconi anemia and MDS/AML. Bone Marrow Transplant. 2024;59:23-33. [PubMed: 37773270]
  • Scheckenbach K, Morgan M, Filger-Brillinger J, Sandmann M, Strimling B, Scheurlen W, Schindler D, Göbel U, Hanenberg H. Treatment of the bone marrow failure in Fanconi anemia patients with danazol. Blood Cells Mol Dis. 2012;48:128–31. [PubMed: 22178060]
  • Scott EM, Wenger OK, Adams M, Baple EL, Crosby A, Leslie J. Neonatally lethal Fanconi anemia due to an Amish founder FANCE gene variant; evidence for genotype-phenotype correlation. Am J Med Genet A. 2025;197:e64047. [PubMed: 40084550]
  • Seal S, Thompson D, Renwick A, Elliott A, Kelly P, Barfoot R, Chagtai T, Jayatilake H, Ahmed M, Spanova K, North B, McGuffog L, Evans DG, Eccles D, Easton DF, Stratton MR, Rahman N, et al. Truncating mutations in the Fanconi anemia J gene BRIP1 are low-penetrance breast cancer susceptibility alleles. Nat Genet. 2006;38:1239–41. [PubMed: 17033622]
  • Sebert M, Gachet S, Leblanc T, Rousseau A, Bluteau O, Kim R, Ben Abdelali R, Sicre de Fontbrune F, Maillard L, Fedronie C, Murigneux V, Bellenger L, Naouar N, Quentin S, Hernandez L, Vasquez N, Da Costa M, Prata PH, Larcher L, de Tersant M, Duchmann M, Raimbault A, Trimoreau F, Fenneteau O, Cuccuini W, Gachard N, Auger N, Tueur G, Blanluet M, Gazin C, Souyri M, Langa Vives F, Mendez-Bermudez A, Lapillonne H, Lengline E, Raffoux E, Fenaux P, Ades L, Forcade E, Jubert C, Domenech C, Strullu M, Bruno B, Buchbinder N, Thomas C, Petit A, Leverger G, Michel G, Cavazzana M, Gluckman E, Bertrand Y, Boissel N, Baruchel A, Dalle JH, Clappier E, Gilson E, Deriano L, Chevret S, Sigaux F, Socie G, Stoppa-Lyonnet D, de The H, Antoniewski C, Bluteau D, Peffault de Latour R, Soulier J. Clonal hematopoiesis driven by chromosome 1q/MDM4 trisomy defines a canonical route toward leukemia in Fanconi anemia. Cell Stem Cell. 2023;30:153-170.e9. [PubMed: 36736290]
  • Shimamura A, Alter BP. Pathophysiology and management of inherited bone marrow failure syndromes. Blood Rev. 2010;24:101–22. [PMC free article: PMC3733544] [PubMed: 20417588]
  • Smogorzewska A, Matsuoka S, Vinciguerra P, McDonald ER 3rd, Hurov KE, Luo J, Ballif BA, Gygi SP, Hofmann K, D'Andrea AD, Elledge SJ. Identification of the FANCI protein, a monoubiquitinated FANCD2 paralog required for DNA repair. Cell. 2007;129:289–301. [PMC free article: PMC2175179] [PubMed: 17412408]
  • Socié G, Scieux C, Gluckman E, Soussi T, Clavel C, Saulnier P, Birembault P, Bosq J, Morinet F, Janin A. Squamous cell carcinomas after allogeneic bone marrow transplantation for aplastic anemia: further evidence of a multistep process. Transplantation. 1998;66:667-70. [PubMed: 9753353]
  • Song IY, Palle K, Gurkar A, Tateishi S, Kupfer GM, Vaziri C. Rad18-mediated translesion synthesis of bulky DNA adducts is coupled to activation of the Fanconi anemia DNA repair pathway. J Biol Chem. 2010;285:31525–36. [PMC free article: PMC2951227] [PubMed: 20675655]
  • Spanier G, Pohl F, Giese T, Meier JK, Koelbl O, Reichert TE. Fatal course of tonsillar squamous cell carcinoma associated with Fanconi anaemia: a mini review. J Craniomaxillofac Surg. 2012;40:510–5. [PubMed: 21925890]
  • Stenson PD, Mort M, Ball EV, Chapman M, Evans K, Azevedo L, Hayden M, Heywood S, Millar DS, Phillips AD, Cooper DN. The Human Gene Mutation Database (HGMD®): optimizing its use in a clinical diagnostic or research setting. Hum Genet. 2020;139:1197–207. [PMC free article: PMC7497289] [PubMed: 32596782]
  • Strocchio L, Pagliara D, Algeri M, Li Pira G, Rossi F, Bertaina V, Leone G, Pinto RM, Andreani M, Agolini E, Girardi K, Gaspari S, Grapulin L, Del Bufalo F, Novelli A, Merli P, Locatelli F. HLA-haploidentical TCRalphabeta+/CD19+-depleted stem cell transplantation in children and young adults with Fanconi anemia. Blood Adv. 2021;5:1333–9. [PMC free article: PMC7948273] [PubMed: 33656536]
  • Takenaka S, Kuroda Y, Ohta S, Mizuno Y, Hiwatari M, Miyatake S, Matsumoto N, Oka A. A Japanese patient with RAD51-associated Fanconi anemia. Am J Med Genet A. 2019;179:900-2. [PubMed: 30907510]
  • Talbot A, Peffault de Latour R, Raffoux E, Buchbinder N, Vigouroux S, Milpied N, Leblanc T, Soulier J, Michallet M, Socié G. Sequential treatment for allogeneic hematopoietic stem cell transplantation in Fanconi anemia with acute myeloid leukemia. Haematologica. 2014;99:e199–200. [PMC free article: PMC4181270] [PubMed: 25085358]
  • Tamary H, Bar-Yam R, Shalmon L, Rachavi G, Krostichevsky M, Elhasid R, Barak Y, Kapelushnik J, Yaniv I, Auerbach AD, Zaizov R. Fanconi anaemia group A (FANCA) mutations in Israeli non-Ashkenazi Jewish patients. Br J Haematol. 2000;111:338-43. [PubMed: 11091222]
  • Tan IB, Cutcutache I, Zang ZJ, Iqbal J, Yap SF, Hwang W, Lim WT, Teh BT, Rozen S, Tan EH, Tan P. Fanconi's anemia in adulthood: chemoradiation-induced bone marrow failure and a novel FANCA mutation identified by targeted deep sequencing. J Clin Oncol. 2011;29:e591–4. [PubMed: 21519011]
  • Taylor AMR, Rothblum-Oviatt C, Ellis NA, Hickson ID, Meyer S, Crawford TO, Smogorzewska A, Pietrucha B, Weemaes C, Stewart GS. Chromosome instability syndromes. Nat Rev Dis Primers. 2019;5:64. [PMC free article: PMC10617425] [PubMed: 31537806]
  • Tipping AJ, Pearson T, Morgan NV, Gibson RA, Kuyt LP, Havenga C, Gluckman E, Joenje H, de Ravel T, Jansen S, Mathew CG. Molecular and genealogical evidence for a founder effect in Fanconi anemia families of the Afrikaner population of South Africa. Proc Natl Acad Sci U S A. 2001;98:5734-9. [PMC free article: PMC33282] [PubMed: 11344308]
  • Toksoy G, Uludag Alkaya D, Bagirova G, Avci S, Aghayev A, Gunes N, Altunoglu U, Alanay Y, Basaran S, Berkay EG, Karaman B, Celkan TT, Apak H, Kayserili H, Tuysuz B, Uyguner ZO. Clinical and molecular characterization of Fanconi anemia patients in Turkey. Mol Syndromol. 2020;11:183-96. [PMC free article: PMC7675230] [PubMed: 33224012]
  • Tsui V, Crismani W. The Fanconi anemia pathway and fertility. Trends Genet. 2019;35:199–214. [PubMed: 30683429]
  • Velazquez I, Alter BP. Androgens and liver tumors: Fanconi's anemia and non-Fanconi's conditions. Am J Hematol. 2004;77:257-67. [PubMed: 15495253]
  • Verlander PC, Kaporis A, Liu Q, Zhang Q, Seligsohn U, Auerbach AD. Carrier frequency of the IVS4 + 4 A-->T mutation of the Fanconi anemia gene FAC in the Ashkenazi Jewish population. Blood. 1995;86:4034-8. [PubMed: 7492758]
  • Verlander PC, Lin JD, Udono MU, Zhang Q, Gibson RA, Mathew CG, Auerbach AD. Mutation analysis of the Fanconi anemia gene FACC. Am J Hum Genet. 1994;54:595-601. [PMC free article: PMC1918103] [PubMed: 8128956]
  • Wagner JE, Tolar J, Levran O, Scholl T, Deffenbaugh A, Satagopan J, Ben-Porat L, Mah K, Batish SD, Kutler DI, MacMillan ML, Hanenberg H, Auerbach AD. Germline mutations in BRCA2: shared genetic susceptibility to breast cancer, early onset leukemia, and Fanconi anemia. Blood. 2004;103:3226–9. [PubMed: 15070707]
  • Wajnrajch MP, Gertner JM, Huma Z, Popovic J, Lin K, Verlander PC, Batish SD, Giampietro PF, Davis JG, New MI, Auerbach AD. Evaluation of growth and hormonal status in patients referred to the International Fanconi Anemia Registry. Pediatrics. 2001;107:744-54. [PubMed: 11335753]
  • Wang AT, Kim T, Wagner JE, Conti BA, Lach FP, Huang AL, Molina H, Sanborn EM, Zierhut H, Cornes BK, Abhyankar A, Sougnez C, Gabriel SB, Auerbach AD, Kowalczykowski SC, Smogorzewska A. A dominant mutation in human RAD51 reveals its function in DNA interstrand crosslink repair independent of homologous recombination. Mol Cell. 2015;59:478-90. [PMC free article: PMC4529964] [PubMed: 26253028]
  • Wilson JB, Blom E, Cunningham R, Xiao Y, Kupfer GM, Jones NJ. Several tetratricopeptide repeat (TPR) motifs of FANCG are required for assembly of the BRCA2/D1-D2-G-X3 complex, FANCD2 monoubiquitylation and phleomycin resistance. Mutat Res. 2010;689:12–20. [PMC free article: PMC2903733] [PubMed: 20450923]
  • Xia B, Dorsman JC, Ameziane N, de Vries Y, Rooimans MA, Sheng Q, Pals G, Errami A, Gluckman E, Llera J, Wang W, Livingston DM, Joenje H, de Winter JP. Fanconi anemia is associated with a defect in the BRCA2 partner PALB2. Nat Genet. 2007;39:159-61. [PubMed: 17200672]
  • Xia B, Sheng Q, Nakanishi K, Ohashi A, Wu J, Christ N, Liu X, Jasin M, Couch FJ, Livingston DM. Control of BRCA2 cellular and clinical functions by a nuclear partner, PALB2. Mol Cell. 2006;22:719–29. [PubMed: 16793542]
  • Yabe M, Koike T, Ohtsubo K, Imai E, Morimoto T, Takakura H, Koh K, Yoshida K, Ogawa S, Ito E, Okuno Y, Muramatsu H, Kojima S, Matsuo K, Mori M, Hira A, Takata M, Yabe H. Associations of complementation group, ALDH2 genotype, and clonal abnormalities with hematological outcome in Japanese patients with Fanconi anemia. Ann Hematol. 2019;98:271-80. [PubMed: 30368588]
  • Yagasaki H, Oda T, Adachi D, Nakajima T, Nakahata T, Asano S, Yamashita T. Two common founder mutations of the fanconi anemia group G gene FANCG/XRCC9 in the Japanese population. Hum Mutat. 2003;21:555. [PubMed: 12673805]
  • Zhang F, Fan Q, Ren K, Auerbach AD, Andreassen PR. FANCJ/BRIP1 recruitment and regulation of FANCD2 in DNA damage responses. Chromosoma. 2010;119:637–49. [PMC free article: PMC4928586] [PubMed: 20676667]
  • Zhang QS, Benedetti E, Deater M, Schubert K, Major A, Pelz C, Impey S, Marquez-Loza L, Rathbun RK, Kato S, Bagby GC, Grompe M. Oxymetholone therapy of fanconi anemia suppresses osteopontin transcription and induces hematopoietic stem cell cycling. Stem Cell Reports. 2015;4:90–102. [PMC free article: PMC4297866] [PubMed: 25434823]
  • Zheng K, Liu T, Zhao J, Meng P, Bian Y, Ni C, Wang H, Pan Y, Wu S, Jiang H, Jin G. Mutational landscape and potential therapeutic targets for sporadic pancreatic neuroendocrine tumors based on target next-generation sequencing. Exp Ther Med. 2021;21:415. [PMC free article: PMC7967861] [PubMed: 33747156]
  • Zhi G, Wilson JB, Chen X, Krause DS, Xiao Y, Jones NJ, Kupfer GM. Fanconi anemia complementation group FANCD2 protein serine 331 phosphorylation is important for Fanconi anemia pathway function and BRCA2 interaction. Cancer Res. 2009;69:8775–83. [PMC free article: PMC5912675] [PubMed: 19861535]
  • Zhu J, Zhang M, Sun Y, Zhang X. Moyamoya syndrome with ruptured aneurysm in alpha-thalassemia: a case report. Exp Ther Med. 2022;24:556. [PMC free article: PMC9366260] [PubMed: 35978939]
  • Zubicaray J, Pagliara D, Sevilla J, Eikema DJ, Bosman P, Ayas M, Zecca M, Yesilipek A, Kansoy S, Renard C, Dalle JH, Campos A, Faraci M, Kupesiz A, Smiers FJW, Velardi A, Abecasis M, Corti P, Fagioli F, González Muñiz S, Kriván G, Dufour C, Risitano A, Corbacioglu S, Peffault de Latour R. Haplo-identical or mismatched unrelated donor hematopoietic cell transplantation for Fanconi anemia: results from the Severe Aplastic Anemia Working Party of the EBMT. Am J Hematol. 2021;96:571–9. [PubMed: 33606297]
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