Study Comparing Daratumumab, Lenalidomide, Bortezomib, and Dexamethasone (D-RVd) Versus Lenalidomide, Bortezomib, and Dexamethasone (RVd) in Subjects With Newly Diagnosed Multiple Myeloma

Percentage of participants who had achieved sCR as determined by the validated computer algorithm according to the International Myeloma Working Group (IMWG) criteria, by the end of post-autologous stem cell transplantation (post-ASCT) consolidation treatment were reported. Complete response (CR) is defined as negative immunofixation on the serum and urine, and disappearance of any soft tissue plasmacytomas, and less than (<) 5 percent (%) PCs in bone marrow. sCR is defined as in addition to CR a normal FLC ratio, and absence of clonal plasma cells (PCs) by immunohistochemistry or immunofluorescence or 2 to 4-color flow cytometry.

CR or better rate is defined as the percentage of participants who achieve CR or sCR, according to the IMWG criteria. CR is negative immunofixation on the serum and urine, and disappearance of any soft tissue plasmacytomas, and < 5% PCs in bone marrow. sCR is defined as in addition to CR a normal FLC ratio, and absence of clonal plasma cells (PCs) by immunohistochemistry or immunofluorescence or 2 to 4-color flow cytometry. For 2 participants (1 in each randomized treatment group), data were updated by the study sites which resulted in their inclusion to the response-evaluable analysis set after the primary analysis.

Overall sCR rate is defined as the percentage of participants who achieved sCR, according to the IMWG criteria. CR is defined as negative immunofixation on the serum and urine, and disappearance of any soft tissue plasmacytomas, and < 5 % PCs in bone marrow. sCR is defined as in addition to CR a normal FLC ratio, and absence of clonal PCs by immunohistochemistry or immunofluorescence or 2 to 4-color flow cytometry.

ORR- percentage of participants who achieved partial response (PR) or better (PR, Very Good Partial Response [VGPR], CR or sCR) based on computerized algorithm as per IMWG criteria. PR -greater than or equal to (>=) 50% reduction of serum M-protein and reduction in 24-hour urinary M-protein by >=90% or to <200 mg//24 hours. If serum and urine M-protein are not measurable, a decrease of >=50% in the difference between involved and uninvolved FLC levels is required. A >=50% reduction in the size of soft tissue plasmacytomas is also required; VGPR-serum and urine M-component detectable by immunofixation but not on electrophoresis, or >= 90% reduction in serum M-protein plus urine M-protein <100 mg/24 hours; CR-negative immunofixation on the serum and urine, and disappearance of any soft tissue plasmacytomas, and <5% PCs in bone marrow. sCR- in addition to CR a normal FLC ratio, and absence of clonal PCs by immunohistochemistry or immunofluorescence or 2 to 4-color flow cytometry.

VGPR or better rate is defined as the percentage of participants who achieved VGPR or better, according to the IMWG criteria. VGPR is defined as serum and urine M-component detectable by immunofixation but not on electrophoresis, or >= 90% reduction in serum M-protein plus urine M-protein <100 mg/24 hours.

Minimal residual disease negative rate is defined as the percentage of participants who achieve MRD negative status by the respective time point. Minimal residual disease was evaluated in participants who achieved CR or sCR (including participants with VGPR or better and suspected daratumumab interference) using next-generation sequencing which utilizes multiple myeloma cell DNA from bone marrow aspirates at a threshold of less than (<) 10^5.

Duration of CR or better is the duration from the date of initial documentation of a CR or sCR response, according to the IMWG criteria, to the date of first documented evidence of progressive disease (PR), or relapse from CR. PD is defined as an increase of 25 % from the lowest response value in one of the following: serum and urine M-component (absolute increase must be greater than or equal to [>=] 0.5 gram per deciliter [g/dL] and >=200 milligrams [mg]/24 hours respectively); Only in participants without measurable serum and urine M-protein levels the difference between involved and uninvolved FLC levels (absolute increase must be > 10 mg/dL); Definite development of new bone lesions or soft tissue plasmacytomas or definite increase in the size of existing bone lesions or soft tissue plasmacytomas; Development of hypercalcemia (corrected serum calcium >11.5 mg/dL) that can be attributed solely to plasma cells (PCs) proliferative disorder.

Duration of sCR is the duration from the date of initial documentation of a sCR response, according to the IMWG criteria, to the date of first documented evidence of progressive disease, or relapse from sCR. PD is defined as an increase of 25 % from the lowest response value in one of the following: serum and urine M component (absolute increase must be >= 0.5 g/dL and >=200 mg/24 hours respectively); Only in participants without measurable serum and urine M-protein levels the difference between involved and uninvolved FLC levels (absolute increase must be > 10 mg/dL); Definite development of new bone lesions or soft tissue plasmacytomas or definite increase in the size of existing bone lesions or soft tissue plasmacytomas; Development of hypercalcemia (corrected serum calcium >11.5 mg/dL) that can be attributed solely to PC proliferative disorder.

Time to sCR is the duration from the date of randomization to the date of initial documentation of sCR, which was confirmed by a repeated measurement as required by the IMWG criteria.

Time to CR or better is the duration from the date of randomization to the date of initial documentation of CR or better, which was confirmed by a repeated measurement as required by the IMWG criteria.

Time to VGPR or better is the duration from the date of randomization to the date of initial documentation of VGPR or better, which was confirmed by a repeated measurement as required by the IMWG criteria.

Time to PR or better is the duration from the date of randomization to the date of initial documentation of PR or better, which was confirmed by a repeated measurement as required by the IMWG criteria.

PFS is defined as the duration from the date of randomization to the date of first documented evidence of progressive disease or death, whichever comes first. PD is defined as an increase of 25 % from the lowest response value in one of the following: serum and urine M-component (absolute increase must be >= 0.5 g/dL and >=200 mg/24 hours respectively); Only in participants without measurable serum and urine M-protein levels the difference between involved and uninvolved FLC levels (absolute increase must be > 10 mg/dL); Definite development of new bone lesions or soft tissue plasmacytomas or definite increase in the size of existing bone lesions or soft tissue plasmacytomas; Development of hypercalcemia (corrected serum calcium >11.5 mg/dL) that can be attributed solely to PC proliferative disorder.

OS is measured from the date of randomization to the date of the participant's death.

TTP is defined as the duration from the date of randomization to the date of first documented evidence of progressive disease according to the IMWG criteria.

Duration of response is defined as the duration from the date of initial documentation of a response (PR or better) according to the IMWG criteria to the date of first documented evidence of progressive disease according to the IMWG criteria. PD is defined as an increase of 25 % from the lowest response value in one of the following: serum and urine M-component (absolute increase must be >= 0.5 g/dL and >=200 mg/24 hours respectively); Only in participants without measurable serum and urine M-protein levels the difference between involved and uninvolved FLC levels (absolute increase must be > 10 mg/dL); Definite development of new bone lesions or soft tissue plasmacytomas or definite increase in the size of existing bone lesions or soft tissue plasmacytomas; Development of hypercalcemia (corrected serum calcium >11.5 mg/dL) that can be attributed solely to PC proliferative disorder.