VWF and hemophilia A: Genetictesting could be helpful in differentiating type 2N vWDfrom hemophilia A, which is possible by analyzing theexons encoding the FVIII binding region (exons 17-25).Genetic testing could also be useful for differentiating type2B vWD from platelet-type-vWD, which is based on analyzingjust exon 28 in the vWF gene.