Table 2

Hematologic responses and outcomes

All patientsSerum and urineSerum onlyUrine only
Best overall response, % 
    n 399 241 103 55 
    Objective response 71.7 70.5 72.8 74.5 
    No change 15.8 17.0 14.6 12.7 
    Progression 12.3 12.4 11.7 12.7 
    Unevaluable 0.3 
Months to objective response (among responders), median (range) 3.4 (0.5-133.9) 3.4 (0.5-27.8) 2.6 (1-133.9) 4.1 (1.1-21.8) 
Died, n (%) 95.0 97.5 90.3 92.7 
FLC evaluable subset* 
    n 318 208 55 55 
    Died, % 97 98 95 93 
    ECOG objective response, % 70 70 67 74 
    Months to objective response (among responders), median (range) 3.5 (0.5-27.8) 3.5 (0.5-27.8) 3.5 (1.1-25.2) 4.1 (1.1-21.8) 
Responses after 2 months* 
    % change of iFLC −58.1 (−99.8-9953) −56.7 (−99.8-2233) −55.9 (−96-122) −64.1 (−98.9-9953) 
    % change of rFLC −57.7 (−99.9-9328) −58.5 (−99.9-1068) −34.0 (−99.4-1082) −66.0 (−99.5-9328) 
    % change of dFLC −58.4 (−319-10 263) −57.9 (−319-2410) −58.2 (−105-127) −64.4 (−99.8-10 263) 
FLC responder, definition A, % 58 56 62 62 
FLC responder, definition B, % 43 41 42 49 
Paraprotein responder, % (n/N) 23 (32/139) 22 (14/63) 25 (11/44) 22 (7/32) 
All patientsSerum and urineSerum onlyUrine only
Best overall response, % 
    n 399 241 103 55 
    Objective response 71.7 70.5 72.8 74.5 
    No change 15.8 17.0 14.6 12.7 
    Progression 12.3 12.4 11.7 12.7 
    Unevaluable 0.3 
Months to objective response (among responders), median (range) 3.4 (0.5-133.9) 3.4 (0.5-27.8) 2.6 (1-133.9) 4.1 (1.1-21.8) 
Died, n (%) 95.0 97.5 90.3 92.7 
FLC evaluable subset* 
    n 318 208 55 55 
    Died, % 97 98 95 93 
    ECOG objective response, % 70 70 67 74 
    Months to objective response (among responders), median (range) 3.5 (0.5-27.8) 3.5 (0.5-27.8) 3.5 (1.1-25.2) 4.1 (1.1-21.8) 
Responses after 2 months* 
    % change of iFLC −58.1 (−99.8-9953) −56.7 (−99.8-2233) −55.9 (−96-122) −64.1 (−98.9-9953) 
    % change of rFLC −57.7 (−99.9-9328) −58.5 (−99.9-1068) −34.0 (−99.4-1082) −66.0 (−99.5-9328) 
    % change of dFLC −58.4 (−319-10 263) −57.9 (−319-2410) −58.2 (−105-127) −64.4 (−99.8-10 263) 
FLC responder, definition A, % 58 56 62 62 
FLC responder, definition B, % 43 41 42 49 
Paraprotein responder, % (n/N) 23 (32/139) 22 (14/63) 25 (11/44) 22 (7/32) 
*

Including only those patients with measurable baseline FLC, that is, dFLC of greater than or equal to 5 mg/dL. Except where stated, results are expressed as median (range).

† Percent change equals = 100 × (2-month − baseline)/baseline.

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