[Wiskott-Aldrich Syndrome: An updated review].

The Wiskott-Aldrich syndrome (WAS) is a primary immunodeficiency and is inherited in an X-linked pattern. Affected patients have mutations in the gene encoding Wiskott-Aldrich syndrome protein (WASP), a key regulator of signaling and reorganization of the cytoskeleton in hematopoietic cells. Mutations in WASP gene lead to a wide clinical spectrum ranging from thrombocytopenia, immunodeficiency, eczema and high susceptibility to tumor development and manifestations such as skin infections, suppurative otitis and pneumonia.