Phase 3 Study of Intravenous Gammagard Liquid Immune Globulin Infusion, 10% for Preventing Infections in Adults With Multiple Myeloma Receiving BCMAxCD3 Bispecific Antibody Therapy

What this Trial Is About

Multiple myeloma is a cancer of the plasma cells in the bone marrow. This phase 3 study is investigating how well Immune Globulin Infusion IGI, 10% helps prevent infections in adults with multiple myeloma who are receiving B-cell maturation antigen BCMA x cluster of differentiation 3 CD3 directed bispecific antibody therapy. The trial compares primary infection prevention using IGI, 10% with secondary prevention given only after a serious infection occurs. Participants are randomly assigned to one of two groups. The primary infection prevention group receives 400 mgkg IGI, 10% intravenously every 3 or 4 weeks for 12 months. The secondary infection prevention group receives the same dose and schedule only after they develop a serious infection during the 12-month study period. The dosing is given within 3 days after randomization and continues throughout the observation period. Participants will visit the study clinic 15 times if dosed every 4 weeks or 19 times if dosed every 3 weeks, for up to 14 months including an approximately 8-week screening. Assessments include monitoring time to first serious infection and rates of infections, antibiotic use, hospitalizations, and adverse events. Serum immunoglobulin levels and antibody responses are also measured. Safety and tolerability of IGI, 10% are evaluated during the 12-month treatment and follow-up.

A Study of Gammagard Liquid (Immune Globulin Infusion, 10%) to Prevent Infections in Adults With Multiple Myeloma