International opinion survey on nomenclature for platelet-type von Willebrand disease: communication from the SSC of the ISTH.

The nomenclature for platelet-type von Willebrand disease (PT-VWD) remains an open debate, with several proposed names in use in the literature for this rare inherited platelet disorder. It has been suggested that this name may lead to delays in diagnosis since the diagnostic pathway of patients often starts with von Willebrand factor assays, while the disorder is due to pathogenic gain-of-function (GOF) variants in the platelet GP1BA.