The results of patients diagnosed with VWD type 2 were as follows: FVIII—C 34–49%, median of 39%; VWF—Ag 15–108%, median of 46%; VWF—Ac 7.6–129%, median of 26%—VWF: CBA 6–73%, median of 28%. This evidence concerns the gene VWF and von Willebrand disease 2.