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2024-08-02T15:18:21.000Z

MagnetisMM-3: Long-term survival after elranatamab monotherapy in patients with RRMM

Aug 2, 2024
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Learning objective: After reading this article, learners will be able to cite a new clinical development in relapsed/refractory MM

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Data from the phase II MagnetisMM-3 trial (NCT04649359) demonstrates deep and durable responses to elranatamab monotherapy in patients with relapsed/refractory multiple myeloma (RRMM). In the BCMA-naive arm (Cohort A; n = 123), the primary endpoint of overall response rate (ORR) was 61% at a median follow-up of 17.6 months. Updated results in BCMA-naive patients after 2 years of follow-up were presented by Mohamad Mohty at the European Hematology Association (EHA) 2024 Hybrid Congress.1

Key learnings:
In the phase II MagnetisMM-3 trial, the ORR remained at 61% after >2 years of follow-up, with 37.4% of patients achieving ≥CR.
The rate of MRD negativity was 90.3% in evaluable patients achieving ≥CR (n = 31).
The median PFS was 17.2 months, and the median OS was 24.6 months.
The median duration of response was not reached; the probability of maintaining at response at 2 years was 66.9% for all responders and 87.9% in patients achieving ≥CR.
No new safety signals were observed. A small number of secondary primary malignancies (SPMs) (<5%) and no hematologic SPMs were reported.
These findings demonstrate the durable long-term efficacy of elranatamab in heavily pretreated patients with BCMA-naive RRMM and supports the continued evaluation of the efficacy and safety of elranatamab across patient populations with MM.

  1. Mohty M. Long-term survival after elranatamab monotherapy in patients with relapsed or refractory multiple myeloma (RRMM): MAGNETISMM-3. Poster #P932. Presented at: European Hematology Association 2024 Hybrid Congress; Jun 13–16, 2024; Madrid, ES. 

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