Wiskott-Aldrich syndrome (WAS), is an X-linked immunodeficiency disease caused by mutations of the WAS protein (WASP) gene, characterized by thrombocytopenia, eczema and recurrent infections.
Wiskott-Aldrich syndrome (WAS) is an X-linked recessive immunodeficiency characterized by thrombocytopenia, eczema, and recurrent infections, and caused by mutations in the WAS protein (WASP) gene.
As a whole, the degree of impairment of WASP protein expression in WAS/XLT seems to correlate with anomalies of cytoskeletal organization, strongly supporting a role for WASP in the regulation of F-actin polymerization.
Mutation analysis of five Japanese families with Wiskott-Aldrich syndrome and determination of the family members' carrier status using three different methods.
Wiskott-Aldrich syndrome: no strict genotype-phenotype correlations but clustering of missense mutations in the amino-terminal part of the WASP gene product.
While the WASP gene defects responsible for isolated thrombocytopenia and other mild presentations of WAS do not appear distinct from those resulting in severe WAS, these data indicate that analysis of WASP gene mutation provides a valuable tool for distinguishing the spectrum of WAS patients and the subset of males with isolated thrombocytopenia who represent mild cases of WAS.
Four amino acid substitutions, Leu27Phe, Thr48Ile, Val75Met and Arg477Lys, were found in patients with congenital thrombocytopenia and no clinically evident immune defect indicating that the WASP gene is the site for mutations in X-linked thrombocytopenia as well as in WAS.