{"classes":[{"categories":[{"measurements":[{"groupId":"OG000","value":"0"},{"groupId":"OG001","value":"0"}]}],"title":"Any Grade Increase"},{"categories":[{"measurements":[{"groupId":"OG000","value":"0"},{"groupId":"OG001","value":"0"}]}],"title":"Increase to Grade 2 (481 - 500 msec)"},{"categories":[{"measurements":[{"groupId":"OG000","value":"0"},{"groupId":"OG001","value":"0"}]}],"title":"Increase to Grade 3 (>= 501 msec)"}],"denoms":[{"counts":[{"groupId":"OG000","value":"2"},{"groupId":"OG001","value":"2"}],"units":"Participants"}],"description":"12-lead electrocardiogram (ECG) was obtained using an automated ECG machine that automatically calculated the heart rate and measured PR, QRS, QT, and QT interval corrected using Fridericia's formula (QTcF) intervals. Grade 0 (\\<450 millisecond (msec)), Grade 1 (450-480 msec), Grade 2 (481-500 msec), and Grade 3 (≥501 msec). Higher grade indicates greater severity. Data for participants with worst-case post baseline with any grade increase and a post-baseline grade increase to G2 and G3 from their baseline grade are presented. Baseline was defined as the latest pre-dose assessment within 21 days prior to first dose with a non-missing value, including those from unscheduled visits.","groups":[{"description":"Participants with RRMM received belantamab mafodotin as dose of 2.5mg/kg via IV infusion on Day 1 of every 21-day cycle (Q3W) maximum up to disease progression. Bortezomib was administered subcutaneously (SC) as 1.3 mg/meter\\^2 (m\\^2) on Day 1, Day 4, Day 8, and Day 11 of every 21-day cycle maximum up to 8 cycles. Dexamethasone was administered orally as dose of 20 mg on Day 1, Day 2, Day 4, Day 5, Day 8, Day 9, Day 11, and Day 12 of every 21-day cycle maximum up to 8 cycles.","id":"OG000","title":"Main Study - Part 2: ArmA-Belantamab Mafodotin 2.5 mg/kg + Bortezomib and Dexamethasone (Bor/Dex)"},{"description":"Participants with RRMM received belantamab mafodotin at a dose of 2.5 mg/kg via IV infusion on Day 1 of each 28-day cycle in cycle 1, and at a dose of 1.9 mg/kg from cycle 2 onwards maximum up to disease progression. Along with belantamab mafodotin, Pomalidomide was administered orally as dose of 4 mg per day on Day 1 to Day 21 of 28-day cycles maximum up to disease progression. Dexamethasone orally as dose of 40 mg per day on Day 1, Day 8, Day 15, and Day 22 of each 28-day maximum up to disease progression.","id":"OG001","title":"Main Study - Part2: ArmB- Belantamab Mafodotin 2.5 mg/kg + Pomalidomide and Dexamethasone (Pom/Dex)"}],"paramType":"COUNT_OF_PARTICIPANTS","populationDescription":"All treated population. Only those participants with data available at specified time points have been analyzed.","reportingStatus":"POSTED","timeFrame":"Baseline (Day 1) and up to approximately 212 weeks","title":"Part 2: Number of Participants With Worst-Case Amount of Increase From Baseline Value in QTcF","type":"PRIMARY","unitOfMeasure":"Participants"}