Preferred Label : von Willebrand Disease, Type 2B;
Alternative definition : NICHD: An autosomally inherited (generally dominant) coagulation disorder characterized
by qualitative abnormalities of the von Willebrand factor (VWF). The mutant VWF shows
increased affinity to platelet glycoprotein Ib alpha, resulting in increased platelet
aggregation, and increased proteolysis of VWF subunits causing a decrease of large
VWF multimers; patients often have secondary thrombocytopenia due to platelet consumption.;