Table 6

Comparison between efficacy and safety data reported for different VMP regimens

ParameterThis study
GEM05>6524 
VISTA2,3,7 
VMP (9 once-weekly cycles)*VMP (4/5 twice-/once-weekly cycles)VMP (1/5 twice-/once-weekly cycles)VMP (4/5 twice-/once-weekly cycles)
191 66 130 344 
Median age, y (range) 71 (56-86) 72 (65-85) 73 (65-83) 71 (57-90) 
Overall response rate (≥PR), % 79# 86# 80 (98 on maintenance) 71§/74# 
    CR rate, % 23 27 20 (44 on maintenance) 30/33 
    CR/nCR rate, % NA NA 32 (59 on maintenance) NR 
Median follow-up, mo (range) 20.9 (0.3-48.6) 35.3 (0.1-48.0) 24 (12-43) 36.7 (NR) 
Median PFS, mo 27 26 34 22 
3-y PFS rate, % 46 39 NR NR 
3-y OS rate, % 87 89 80 68.5 
Median no. cycles, n NR 
Sensory PN (any grade), % 22 44 NR 44 
    Grade 3/4, % 14 5 (2/5 on VP/VT maintenance) 13 
Discontinuation caused by PN, % 16 NR 15 (3.2 VMP, 11.8 V only) 
Bortezomib dose reductions caused by PN, % 14 40 NR 22 
Bortezomib planned dose intensity, mg/m2/wk 1.04 1.73 (cycles 1-4) 1.73 (cycle 1) 1.73 (cycles 1-4) 
 0.87 (cycles 5-9) 1.04 (cycles 2-6) 0.87 (cycles 5-9) 
ParameterThis study
GEM05>6524 
VISTA2,3,7 
VMP (9 once-weekly cycles)*VMP (4/5 twice-/once-weekly cycles)VMP (1/5 twice-/once-weekly cycles)VMP (4/5 twice-/once-weekly cycles)
191 66 130 344 
Median age, y (range) 71 (56-86) 72 (65-85) 73 (65-83) 71 (57-90) 
Overall response rate (≥PR), % 79# 86# 80 (98 on maintenance) 71§/74# 
    CR rate, % 23 27 20 (44 on maintenance) 30/33 
    CR/nCR rate, % NA NA 32 (59 on maintenance) NR 
Median follow-up, mo (range) 20.9 (0.3-48.6) 35.3 (0.1-48.0) 24 (12-43) 36.7 (NR) 
Median PFS, mo 27 26 34 22 
3-y PFS rate, % 46 39 NR NR 
3-y OS rate, % 87 89 80 68.5 
Median no. cycles, n NR 
Sensory PN (any grade), % 22 44 NR 44 
    Grade 3/4, % 14 5 (2/5 on VP/VT maintenance) 13 
Discontinuation caused by PN, % 16 NR 15 (3.2 VMP, 11.8 V only) 
Bortezomib dose reductions caused by PN, % 14 40 NR 22 
Bortezomib planned dose intensity, mg/m2/wk 1.04 1.73 (cycles 1-4) 1.73 (cycle 1) 1.73 (cycles 1-4) 
 0.87 (cycles 5-9) 1.04 (cycles 2-6) 0.87 (cycles 5-9) 

CR indicates complete response; NA, not applicable; nCR, near-complete response; NR, not reported; OS, overall survival; PFS, progression-free survival; PN, peripheral neuropathy; PR, partial response; TNT, time to next therapy; VMP, bortezomib, melphalan, prednisone; VP, bortezomib plus prednisone; and VT, bortezomib plus thalidomide.

*

Bortezomib 1.3 mg/m2 on days 1, 8, 15, and 22 for 9 5-week cycles.

Bortezomib 1.3 mg/m2 on days 1, 4, 8, 11, 22, 25, 29, and 32 for 4 6-week cycles, and on days 1, 8, 22, and 29 for 56-week cycles.

Bortezomib 1.3 mg/m2 on days 1, 4, 8, 11, 22, 25, 29, and 32 for 1 6-week cycle, and on days 1, 8, 15, and 22 for 55-week cycles; followed by maintenance including bortezomib 1.3 mg/m2 on days 1, 4, 8, and 11 every 3 months, for up to 3 years.

#

International Myeloma Working Group uniform criteria.17 

§

European Group for Blood and Marrow Transplantation criteria.

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