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Items: 11

1.

TOOTH AGENESIS, SELECTIVE, WITH OR WITHOUT OROFACIAL CLEFT

MedGen UID:
864646
Concept ID:
C4016209
Finding
2.

Selective tooth agenesis 1

MedGen UID:
483482
Concept ID:
C3489529
Congenital Abnormality
3.

Tooth agenesis, selective, with orofacial cleft

MedGen UID:
409991
Concept ID:
C1970117
Disease or Syndrome
4.

Orofacial cleft 5

MedGen UID:
373280
Concept ID:
C1837210
Disease or Syndrome
5.

Cleft palate, isolated, and mental retardation

MedGen UID:
370176
Concept ID:
C1970095
Disease or Syndrome
6.

Hypodontia Oligodontia with Orofacial Cleft

MedGen UID:
369662
Concept ID:
C1970118
Disease or Syndrome
7.

Orofacial cleft 1

Cleft lip with or without cleft palate mapped to chromosome 6p24. [from NCI]

MedGen UID:
349303
Concept ID:
C1861537
Disease or Syndrome
8.

Cleft palate, isolated

Cleft palate as an isolated malformation behaves as an entity distinct from cleft lip with or without cleft palate (see 119530). Dominantly inherited cleft soft palate in 4 generations has been reported (Jenkins and Stady, 1980); see 119570. [from OMIM]

MedGen UID:
332392
Concept ID:
C1837218
Congenital Abnormality; Disease or Syndrome; Finding
9.

Hypoplastic enamel-onycholysis-hypohidrosis syndrome

Some ectodermal dysplasias are here classified as congenital disorders characterized by abnormal development in 2 or more ectodermal structures (hair, nails, teeth, and sweat glands) without other systemic findings. Witkop syndrome is a rare autosomal dominant ectodermal dysplasia involving the teeth and nails. Although a few reported cases have sparse or fine hair, almost all affected individuals have normal hair, sweat glands, and ability to tolerate heat. Affected individuals have a variable number and variable types of congenitally missing permanent and/or primary teeth, which frequently results in lip eversion due to loss of occlusion in the vertical dimension. Nails are generally thin, slow-growing, brittle, and spoon-shaped (koilonychia). Toenails are usually more severely affected than fingernails. The nail defects are alleviated with age and may not be easily detectable during adulthood (summary by Jumlongras et al., 2001). [from OMIM]

MedGen UID:
140809
Concept ID:
C0406735
Disease or Syndrome
10.

Partial congenital absence of teeth

Tooth agenesis in some form is a common human anomaly that affects approximately 20% of the population. Although tooth agenesis is associated with numerous syndromes, several case reports describe nonsyndromic forms that are either sporadic or familial in nature, as reviewed by Gorlin et al. (1990). The incidence of familial tooth agenesis varies with each class of teeth. Most commonly affected are third molars (wisdom teeth), followed by either upper lateral incisors or lower second premolars; agenesis involving first and second molars is very rare. Also see 114600 and 302400. Selective tooth agenesis without associated systemic disorders has sometimes been divided into 2 types: oligodontia, defined as agenesis of 6 or more permanent teeth, and hypodontia, defined as agenesis of less than 6 teeth. The number in both cases does not include absence of third molars (wisdom teeth). Faulty use of the terms, however, have confounded their use. The term 'partial anodontia' is obsolete (Salinas, 1978). Genetic Heterogeneity of Selective Tooth Agenesis Other forms of selective tooth agenesis include STHAG2 (602639), mapped to chromosome 16q12; STHAG3 (604625), caused by mutation in the PAX9 gene (167416) on chromosome 14q12; STHAG4 (150400), caused by mutation in the WNT10A gene (606268) on chromosome 2q35; STHAG5 (610926), mapped to chromosome 10q11; STHAG7 (616724), caused by mutation in the LRP6 gene (603507) on chromosome 12p13; STHAG8 (617073), caused by mutation in the WNT10B gene (601906) on chromosome 12q13; STHAG9 (617275), caused by mutation in the GREM2 gene (608832) on chromosome 1q43; and STHAGX1 (313500), caused by mutation in the EDA gene (300451) on chromosome Xq13. A type of selective tooth agenesis that was formerly designated STHAG6 has been incorporated into the dental anomalies and short stature syndrome (DASS; 601216). Of 34 unrelated patients with nonsyndromic tooth agenesis, van den Boogaard et al. (2012) found that 56% (19 patients) had mutations in the WNT10A gene (STHAG4), whereas only 3% and 9% had mutations in the MSX1 (STHAG1) and PAX9 (STHAG3) genes, respectively. The authors concluded that WNT10A is a major gene in the etiology of isolated hypodontia. Genotype-Phenotype Correlations Yu et al. (2016) observed that the most frequently missing permanent teeth in WNT10B-associated oligodontia were the lateral incisors (83.3%), whereas premolars were missing only 51.4% of the time, which they noted was a pattern 'clearly different' from the oligodontia patterns resulting from WNT10A mutations. They also stated that the selective pattern in WNT10B mutants was different from that associated with mutations in other genes, such as MSX1, in which second premolars are missing, and PAX9, in which there is agenesis of molars. [from OMIM]

MedGen UID:
43794
Concept ID:
C0020608
Congenital Abnormality
11.

Cleft palate

Cleft palate is a developmental defect of the palate resulting from a failure of fusion of the palatine processes and manifesting as a separation of the roof of the mouth (soft and hard palate). [from HPO]

MedGen UID:
3107
Concept ID:
C0008925
Congenital Abnormality; Disease or Syndrome
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