Clinical efficacy in previously untreated multiple myeloma A prospective Phase III, international, randomized (1:1), open-label clinical study (VISTA) of 682 patients was conducted to determine whether VELCADE (1.3 mg/ m2) in combination with melphalan (9 mg/ m2) and prednisone (60 mg/ m2) resulted in improvement in time to progression (TTP) when compared to melphalan (9 mg/ m2) and prednisone (60 mg/ m2) in patients with previously untreated multiple myeloma.