{"denoms":[{"counts":[{"groupId":"OG000","value":"0"}],"units":"Participants"}],"description":"ORR was defined as the percentage of the participants with either a stringent complete response (sCR), complete response (CR), very good partial response (VGPR), or partial response (PR) according to the International Myeloma Working Group (IMWG) 2006 response criteria. CR=negative immunofixation of serum and urine+disappearance of soft tissue plasmacytomas+≤5% plasma cells in the bone marrow (BM); sCR=stringent complete response, CR as above+normal serum free light-chain ratio and absence of clonal cells in BM; VGPR=serum+urine M-protein (M-p) by immunofixation but not on electrophoresis OR ≥ 90% reduction in serum M-p+urine M-p \\<100 mg/24 hr; PR=≥50% reduction of serum M-p+reduction in 24-hour urine M-p by ≥90% or to \\<200 mg/24 hours. PD-L1 was assessed by immunohistochemistry (IHC). The percentage of participants with CR, sCR, PR, VGPR as assessed by the investigator is presented for PD-L1 negative (PD-L1 of \\<1%) participants.","groups":[{"description":"Participants received pembrolizumab 200 mg by IV infusion on Day 1 of each 21-day cycle OR 10 mg/kg by IV infusion on Day 1 of each 14-day cycle.","id":"OG000","title":"Cohort 2: Relapsed Refractory/Refractory (rR/R) Multiple Myeloma (MM)"}],"populationDescription":"All participants in Cohort 2, who were PD-L1 negative, with a baseline efficacy evaluation and at least 1 post-baseline efficacy evaluation. ORR by PD-L1 status was not analyzed because there were no participants who demonstrated a PR or CR in Cohort 2.","reportingStatus":"POSTED","timeFrame":"Up to approximately 78.5 months","title":"Objective Response Rate (ORR) in Programmed Cell Death Ligand 1 (PD-L1) Negative Participants in Cohort 2: Relapsed Refractory/Refractory (rR/R) Multiple Myeloma (MM)","type":"SECONDARY"}