Multicenter Open Label Phase 3 Study of Isatuximab Plus Lenalidomide and Dexamethasone With/Without Bortezomib in the Treatment of Newly Diagnosed Non Frail Transplant Ineligible Multiple Myeloma Elderly Patients (≥ 65; < 80 Years).

Isatuximab by IV route, per 28 days cycle - Cycle1: 10 mg/kg on days 1, 8, 15, and 22. Cycles 2 to 12: 10 mg/kg on days 1 and 15. From cycle 13: 10 mg/kg on day 1.

Lenalidomide by oral route, per 28 days cycle - 25 mg daily on days 1-21.

Bortezomib sub-cutaneous, per 28 days cycle - Cycles 1 to 12: 1.3 mg/m2 on days 1, 8, 15. Cycles 13-18: 1.3 mg/m2 on days 1, 15.

Dexamethasone by oral route, per 28 days cycle - 20 mg daily on days 1, 8, 15 and 22.