The talquetamab Phase 2 MonumenTAL-1 study, which included patients who had received at least four prior lines of therapy and who were not exposed to prior T-cell redirection therapy (n=187), showed meaningful overall response rates (ORR). At the SC biweekly dose of 0.8 mg/kg, 73.6 percent of patients (95 percent Confidence Interval [CI], range, 63.0 to 82.4) achieved an ORR. With a median follow-up of nearly 6 (range, 0 to 9.5) months from first response among responders, 58 percent of patients achieved a very good partial response (VGPR) or better, including 33 percent of patients achieving a complete response (CR) or better. At the SC weekly dose of 0.4 mg/kg, 73.0 percent of patients (95 percent CI, range, 63.2 to 81.4) achieved an ORR. With a median follow-up of nearly 14 (range, 0.8 to 15.4) months from first response among responders, 57 percent of patients achieved a VGPR or better, including 35 percent of patients achieving a CR or better. Responses were durable with a median duration of response not reached in the 0.8 mg/kg SC biweekly dose group and 9.5 months in the 0.4 mg/kg SC weekly dose group. Among patients receiving the 0.8 mg/kg SC biweekly dose, an estimated 85 percent of responders maintained response for at least 9 months.