Format
Items per page

Send to:

Choose Destination

Links from PubMed

Items: 9

1.

Juvenile myelomonocytic leukemia

Juvenile myelomonocytic leukemia is an aggressive pediatric myelodysplastic syndrome (MDS)/myeloproliferative disorder (MPD) characterized by malignant transformation in the hematopoietic stem cell compartment with proliferation of differentiated progeny (Loh et al., 2009). JMML constitutes approximately 30% of childhood cases of myelodysplastic syndrome and 2% of leukemia (Hasle et al., 1999). Although JMML is a progressive and often rapidly fatal disease without hematopoietic stem cell transplantation (HSCT), some patients have been shown to have a prolonged and stable clinical course without HSCT (Niemeyer et al., 1997). Chronic myelomonocytic leukemia (CMML) is a similar disorder with later onset. Both JMML and CMML have a high frequency of mutations affecting the RAS signaling pathway and show hypersensitivity to stimulation with GM-CSF, which causes STAT5 (601511) hyperphosphorylation (Loh et al., 2009). Genetic Heterogeneity of Juvenile Myelomonocytic Leukemia In up to 60% of cases of JMML, the RAS/MAPK pathway is deregulated due to somatic mutations in the PTPN11 (176876), KRAS (190070), and NRAS (164790) genes. Additionally, both germline and somatic mutations in the CBL gene have been found in patients with JMML, indicating a frequency of 10 to 15% of JMML patients overall (Loh et al., 2009). Somatic disruptions of the GRAF gene (ARHGAP26; 605370) have also been found in patients with JMML. About 10 to 15% of JMML cases arise in children with neurofibromatosis type I (NF1; 162200) due to germline mutations in the NF1 gene (613113). In addition, patients with Noonan syndrome (NS1, 163950; NS3, 609942) or Noonan syndrome-like disorder (NSLL; 613563) due to germline mutations in the PTPN11, KRAS2, and CBL genes, respectively, also have an increased risk of developing JMML. Genetic Heterogeneity of Chronic Myelomonocytic Leukemia Somatic mutations in the CBL, ASXL1 (612990), TET2 (612839), and SF3B1 (605590) genes have been found in patients with CMML. [from OMIM]

MedGen UID:
138109
Concept ID:
C0349639
Neoplastic Process
2.

Juvenile myelomonocytic leukemia

Juvenile myelomonocytic leukemia (JMML) is a lethal myeloproliferative disease of young childhood characterized clinically by overproduction of myelomonocytic cells and by the in vitro phenotype of hematopoietic progenitor hypersensitivity to granulocyte-macrophage colony-stimulating factor. [from HPO]

MedGen UID:
506693
Concept ID:
CN167935
Finding
3.

Leukemia

A cancer of the blood and bone marrow characterized by an abnormal proliferation of leukocytes. [from HPO]

MedGen UID:
505002
Concept ID:
CN001727
Finding
4.

Myeloproliferative disorder

Proliferation (excess production) of hemopoietically active tissue or of tissue which has embryonic hemopoietic potential. [from HPO]

MedGen UID:
505828
Concept ID:
CN004913
Finding
5.

Neurofibromatosis, type 1

Neurofibromatosis 1 (NF1) is characterized by multiple café-au-lait spots, axillary and inguinal freckling, multiple cutaneous neurofibromas, and iris Lisch nodules. Learning disabilities are present in at least 50% of individuals with NF1. Less common but potentially more serious manifestations include plexiform neurofibromas, optic nerve and other central nervous system gliomas, malignant peripheral nerve sheath tumors, scoliosis, tibial dysplasia, and vasculopathy. [from GeneReviews]

MedGen UID:
18013
Concept ID:
C0027831
Neoplastic Process
6.

Myeloproliferative disorder

Proliferation (excess production) of hemopoietically active tissue or of tissue which has embryonic hemopoietic potential. [from HPO]

MedGen UID:
10147
Concept ID:
C0027022
Neoplastic Process
7.

Myeloid leukemia

A leukemia that originates from a myeloid cell, that is the blood forming cells of the bone marrow. [from HPO]

MedGen UID:
7320
Concept ID:
C0023470
Neoplastic Process
8.

Hematologic disease

Your blood is living tissue made up of liquid and solids. The liquid part, called plasma, is made of water, salts and protein. Over half of your blood is plasma. The solid part of your blood contains red blood cells, white blood cells and platelets. Blood disorders affect one or more parts of the blood and prevent your blood from doing its job. They can be acute or chronic. Many blood disorders are inherited. Other causes include other diseases, side effects of medicines, and a lack of certain nutrients in your diet. Types of blood disorders include. -Platelet disorders, excessive clotting, and bleeding problems, which affect how your blood clots. -Anemia, which happens when your blood does not carry enough oxygen to the rest of your body. -Cancers of the blood, such as leukemia and myeloma. -Eosinophilic disorders, which are problems with one type of white blood cell.  [from MedlinePlus]

MedGen UID:
5483
Concept ID:
C0018939
Disease or Syndrome
9.

Bone marrow disorder

Bone marrow is the spongy tissue inside some of your bones, such as your hip and thigh bones. It contains immature cells, called stem cells. The stem cells can develop into the red blood cells that carry oxygen through your body, the white blood cells that fight infections, and the platelets that help with blood clotting. . If you have a bone marrow disease, there are problems with the stem cells or how they develop. Leukemia is a cancer in which the bone marrow produces abnormal white blood cells. With aplastic anemia, the bone marrow doesn't make red blood cells. Other diseases, such as lymphoma, can spread into the bone marrow and affect the production of blood cells. Other causes of bone marrow disorders include your genetic makeup and environmental factors. Symptoms of bone marrow diseases vary. Treatments depend on the disorder and how severe it is. They might involve medicines, blood transfusions or a bone marrow transplant. .  [from MedlinePlus]

MedGen UID:
2311
Concept ID:
C0005956
Disease or Syndrome
Format
Items per page

Send to:

Choose Destination

Supplemental Content

Find related data

Recent activity

Your browsing activity is empty.

Activity recording is turned off.

Turn recording back on

See more...
Support Center