Preferred Label : von Willebrand Disease, Type 2A;
Alternative definition : NICHD: An autosomally inherited (generally dominant) coagulation disorder characterized
by qualitative abnormalities of the von Willebrand factor (VWF). The mutant VWF causes
decreased platelet adhesion due to a selective deficiency of high molecular weight
multimers. The decrease in large multimers can be due to a failure to synthesize the
multimers ('group 1') or enhanced ADAMTS13-mediated proteolysis of the secreted high
molecular weight protein ('group 2').;