has material basis in germline mutation in VWF von Willebrand disease 1 https://www.malacards.org/card/von_willebrand_disease_type_1 DOID:0060573 VWD1 von Willebrand's disease type 1 Orphanet:166078 von Willebrand disease type 1 VWD, type 1 von willebrand's disease 1 von Willebrand disease 1 UMLS:C1264039 OMIM:193400 GARD:0017019 SCTID:128106003 MESH:D056725 MEDGEN:220393 VON WILLEBRAND disease, type 1 Von Willebrand disease, type 1 NCIT:C131685 MONDO:0008668 Type 1 von Willebrand disease (type 1 VWD) is a form of VWD characterized by a bleeding disorder associated with a partial quantitative plasmatic deficiency of an otherwise structurally and functionally normal Willebrand factor (von Willebrand factor; VWF). hereditary von Willebrand disease