" /> Symphalangism, proximal, 1a - CISMeF





Preferred Label : Symphalangism, proximal, 1a;

Symbol : SYM1A;

CISMeF acronym : SYM1A; SYM1;

Type : Phenotype, molecular basis known;

Alternative titles and symbols : Cushing symphalangism; Hereditary absence of the proximal interphalangeal joints; SYM1;

Description : Proximal symphalangism (SYM1) is an autosomal dominant disorder characterized by ankylosis of the proximal interphalangeal joints, carpal and tarsal bone fusion, and conductive deafness (summary by Takahashi et al., 2001). - Genetic Heterogeneity of Proximal Symphalangism Another form of proximal symphalangism (SYM1B; 615298) is caused by mutation in the GDF5 gene (601146);

Inheritance : Autosomal dominant;

Molecular basis : Caused by mutation in the homolog of the mouse Noggin gene (NOG, 602991.0001);

Prefixed ID : #185800;

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28/04/2025


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