The following results were obtained : ( 1 ) at the end of the 3rd cycle , the overall response rate ( ORR ) was higher in the HD-DXM group than in the prednisone group ; ( 2 ) the ORR of the HD-DXM group peaked after the 3rd cycle ; ( 3 ) the ORR after each course was higher in the HD-DXM-M group than in the HD-DXM-nM group ; ( 4 ) in the 12th month after HD-DXM discontinuation , the relapse rate of the HD-DXM-M group was lower than that of the other groups ( prednisone and HD-DXM-nM ) .