Phase III Study of Lenalidomide and Dexamethasone With or Without Elotuzumab to Treat Relapsed or Refractory Multiple Myeloma

Primary definition of Progression-free survival (PFS) defined as the time from randomization to the date of first documented tumor progression or death due to any cause. Participants were censored at the last adequate assessment prior to the start of any subsequent systemic-therapy or at the last adequate assessment prior to 2 missing assessments (> 10 weeks). Participants who died more than 10 weeks after the randomization date and had no on-treatment assessment were censored at the randomization date. Clinical deterioration was not considered progression. The primary analysis of PFS was based on the primary definition using the Independent Review Committee (IRC) tumor assessment using the European Group for Blood and Bone Marrow Transplant (EBMT) criteria. Tumor assessments were made every 4 weeks (±1 week) relative to the first dose of study medication.

Objective response rate (ORR) defined as the percentage of participants with a best response on-study of partial response (PR) or better (stringent CR [sCR], complete response [CR], very good partial response [VGPR], and partial response [PR]) based on the Independent Review Committee (IRC) assessment of best response using the European Group for Blood and Bone Marrow Transplant (EBMT) assessment criteria. Participants were censored at the last adequate assessment prior to the start of any subsequent systemic-therapy or at the last adequate assessment prior to 2 missing assessments (> 10 weeks). Participants who died more than 10 weeks after the randomization date and had no on-treatment assessment were censored at the randomization date. Clinical deterioration was not considered progression. Assessments were made every 4 weeks.

Overall survival is defined as the time from randomization to the date of death from any cause. If a subject has not died, their survival time will be censored at the date of last contact ("last known alive date"). A subject will be censored at the date of randomization if they were randomized but had no follow-up. (Based on Kaplan Meier estimates)

The change from baseline of the mean score of pain severity at the end of treatment using the Brief Pain Inventory-Short Form (BPI-SF). The BPI-SF is a self administered questionnaire developed to assess the severity of pain (the sensory dimension) as well as the degree to which pain interferes with function (the reactive dimension). The BPI-SF uses 0 ("No pain", "No interference") to 10 ("Pain as bad as you can imagine", "Highest imaginable interference") numeric rating scale.

The change from baseline of the mean score of pain interference at the end of treatment using the Brief Pain Inventory-Short Form (BPI-SF). The BPI-SF is a self administered questionnaire developed to assess the severity of pain (the sensory dimension) as well as the degree to which pain interferes with function (the reactive dimension). The BPI-SF uses 0 ("No pain", "No interference") to 10 ("Pain as bad as you can imagine", "Highest imaginable interference") numeric rating scale.