" /> Angelman syndrome - CISMeF





Preferred Label : Angelman syndrome;

Symbol : AS;

CISMeF acronym : ANCR; AS;

Type : Phenotype, molecular basis known;

Alternative titles and symbols : Happy puppet syndrome;

Included titles and symbols : Angelman syndrome chromosome region; ANCR;

Description : Angelman syndrome is a neurodevelopmental disorder characterized by mental retardation, movement or balance disorder, typical abnormal behaviors, and severe limitations in speech and language. Most cases are caused by absence of a maternal contribution to the imprinted region on chromosome 15q11-q13. Prader-Willi syndrome (PWS; 176270) is a clinically distinct disorder resulting from paternal deletion of the same 15q11-q13 region. In addition, the chromosome 15q11-q13 duplication syndrome (608636) shows overlapping clinical features. Clayton-Smith and Pembrey (1992) provided a review of Angelman syndrome. Cassidy and Schwartz (1998) reviewed the molecular and clinical aspects of both Prader-Willi syndrome and Angelman syndrome. Horsthemke and Wagstaff (2008) provided a detailed review of the mechanisms of imprinting of the Prader-Willi/Angelman syndrome region. Van Buggenhout and Fryns (2009) provided a review of Angelman syndrome and discussed genetic counseling of the disorder, which can show a recurrence risk of up to 50%, depending on the underlying genetic mechanism.;

Inheritance : Autosomal dominant (loss of maternal allele);

Molecular basis : Caused by mutation in the ubiquitin protein ligase E3A gene (UBE3A, 601623.0001);

Prefixed ID : #105830;

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01/05/2025


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