Juvenile myelomonocytic leukemia (JMML) is a rare clonal hematopoietic disorder of early childhood with features characteristic of both myelodysplastic and myeloproliferative disorders. Recent studies have shown that abnormal proliferation is due to aberrant signal transduction resulting from mutations in components of the RAS-signaling pathway.
Category
Cancer
Brite
Human diseases in ICD-11 classification [BR:br08403]
02 Neoplasms
Neoplasms of haematopoietic or lymphoid tissues
Myelodysplastic and myeloproliferative neoplasms
2A42 Juvenile myelomonocytic leukaemia
H02541 Juvenile myelomonocytic leukemia
Pathway-based classification of diseases [BR:br08402]
Signal transduction
nt06526 MAPK signaling
H02541 Juvenile myelomonocytic leukemia
Cellular process
nt06535 Efferocytosis
H02541 Juvenile myelomonocytic leukemia
Borkhardt A, Bojesen S, Haas OA, Fuchs U, Bartelheimer D, Loncarevic IF, Bohle RM, Harbott J, Repp R, Jaeger U, Viehmann S, Henn T, Korth P, Scharr D, Lampert F
Title
The human GRAF gene is fused to MLL in a unique t(5;11)(q31;q23) and both alleles are disrupted in three cases of myelodysplastic syndrome/acute myeloid leukemia with a deletion 5q.
LEOPARD syndrome is an autosomal dominant developmental disorder belonging to a relatively prevalent class of inherited RAS-MAPK signalling diseases. Its main features are lentigines, electrocardiographic abnormalities, ocular hypertelorism, pulmonary valve stenosis, abnormal genitalia, retardation of growth and deafness. Approximately 90% of LEOPARD syndrome cases are caused by missense mutations in the PTPN11 gene which encodes the protein tyrosine phosphatase SHP2. But it may also be caused by mutations in RAF1 or BRAF.
Category
Congenital malformation
Brite
Human diseases in ICD-11 classification [BR:br08403]
20 Developmental anomalies
Multiple developmental anomalies or syndromes
LD2F Syndromes with multiple structural anomalies, without predominant body system involvement
H01984 Leopard syndrome
Pathway-based classification of diseases [BR:br08402]
Signal transduction
nt06526 MAPK signaling
H01984 Leopard syndrome
Cellular process
nt06535 Efferocytosis
H01984 Leopard syndrome
Carvajal-Vergara X, Sevilla A, D'Souza SL, Ang YS, Schaniel C, Lee DF, Yang L, Kaplan AD, Adler ED, Rozov R, Ge Y, Cohen N, Edelmann LJ, Chang B, Waghray A, Su J, Pardo S, Lichtenbelt KD, Tartaglia M, Gelb BD, Lemischka IR
Title
Patient-specific induced pluripotent stem-cell-derived models of LEOPARD syndrome.
Metachondromatosis (MC) is a rare, autosomal dominant condition affecting the growth of bones. It is characterized by exostoses (osteochondromas) and enchondromas. Exostotic lesions occur frequently in the digits and tend to grow toward the joint. MC exostoses may regress or even resolve over time.
Category
Congenital malformation
Brite
Human diseases in ICD-11 classification [BR:br08403]
20 Developmental anomalies
Multiple developmental anomalies or syndromes
LD24 Syndromes with skeletal anomalies as a major feature
H01018 Metachondromatosis
Pathway-based classification of diseases [BR:br08402]
Cellular process
nt06535 Efferocytosis
H01018 Metachondromatosis
Sobreira NL, Cirulli ET, Avramopoulos D, Wohler E, Oswald GL, Stevens EL, Ge D, Shianna KV, Smith JP, Maia JM, Gumbs CE, Pevsner J, Thomas G, Valle D, Hoover-Fong JE, Goldstein DB
Title
Whole-genome sequencing of a single proband together with linkage analysis identifies a Mendelian disease gene.
