" /> Silver-russell syndrome 1 - CISMeF





Preferred Label : Silver-russell syndrome 1;

Symbol : SRS1;

CISMeF acronym : RSS; SRS; SRS1;

Type : Phenotype, molecular basis known;

Alternative titles and symbols : Russell-silver syndrome; Silver-russell dwarfism; RSS;

Description : Silver-Russell syndrome is a clinically heterogeneous condition characterized by severe intrauterine growth retardation, poor postnatal growth, craniofacial features such as a triangular shaped face and a broad forehead, body asymmetry, and a variety of minor malformations. The phenotypic expression changes during childhood and adolescence, with the facial features and asymmetry usually becoming more subtle with age. Hypomethylation at distal chromosome 11p15 represents a major cause of the disorder. Opposite epimutations, namely hypermethylation at the same region on 11p15, are observed in about 5 to 10% of patients with Beckwith-Wiedemann syndrome (BWS; 130650), an overgrowth syndrome (Bartholdi et al., 2009).;

Inheritance : Autosomal dominant (loss of paternal allele);

Molecular basis : Caused by epigenetic changes of DNA hypomethylation at the H19/IGF2-imprinting control region (ICR1, 616186); Contiguous gene syndrome caused by deletion of paternal allele on chromosome 7;

Neoplasia : Craniopharyngioma; Testicular seminoma; Wilms tumor; Hepatocellular carcinoma;

Prefixed ID : #180860;

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28/04/2025


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