MagnetisMM-20

Phase 1B Study Evaluating Elranatamab in Combination with Carfilzomib/Dexamethasone or in Combination with PF-07901801 (maplirpacept) in Relapsed/Refractory Multiple Myeloma

What's the purpose of the trial?

The goal of this study is to evaluate the best dose, safety, and effectiveness of elranatamab when combined with carfilzomib and dexamethasone, and to evaluate the best dose, safety and effectiveness of PF-07901801 (maplirpacept)when combined with elranatamab in participants with relapsed/refractory multiple myeloma. 

Trial status

Accepting patients

Phase
Phase 1
Enrollment
90
Last Updated
2 months ago
Patient Screener

Participating Centers

There are 5 centers participating in this trial. Enter a location below to find the closest center.

Experimental Treatments

Learn more about the experimental treatments being evaluated in this clinical trial.

  • Carfilzomib Carfilzomib is a kind of medication called a proteasome inhibitor that interferes with the growth and spread of cancer cells in the body. Carfilzomib is used in the treatment of multiple myeloma. 
  • Dexamethasone is a corticosteroid that prevents the release of substances in the body that cause inflammation, and is given in conjunction with some cancer treatments.
  • Elranatamab is a B-Cell Maturation Antigen (BCMA) CD-3 bispecific antibody being tested in multiple myeloma

Published Results

Explore published results and other resources associated with this clinical trial (including press releases, news articles and videos).

Efficacy of Elranatamab (ELRA) in Combination with Carfilzomib (CFZ) and Dexamethasone (DEX) in the Phase 1b MagnetisMM-20 Trial in Relapsed or Refractory Multiple Myeloma (RRMM)

Results: Of the 12 treated pts in part 1, the median age was 66.0 years (range, 45.0-80.0), 8 (66.7%) were male, none had extramedullary disease, 3 (25.0%) had high-risk cytogenic abnormalities, 4 (33.3%) had ISS stage III, and 8 (66.7%) had <30% baseline bone marrow plasma cells. Eight pts (66.7%) had Revised International Staging System disease stage I or II (unknown for 2 pts [16.7%]). Pts had a median of 2 prior lines of therapy (range, 1-3), and 41.7% had triple-class refractory disease. No pts had a stem cell transplant. At the time of data cutoff (February 22, 2024), 91.7% of pts were ongoing ELRA and CFZ tx, with DEX tx ongoing in 66.7% of pts. Median tx duration was 3.15 months (range, 0.56-13.37).

Among the 10 pts evaluable for DLTs, none were reported at DL1 or DL2. In the safety analysis population (n=12), the most common adverse events (any grade [≥50%], grade 3/4 [≥10%]) were fatigue (83.3%, 8.3%), CRS (75.0%, 0%), neutropenia (58.3%, 33.3%), thrombocytopenia (58.3%, 25.0%), injection site reaction (50.0%, 0%), leukopenia (50.0%, 16.7%), anemia (41.7%, 25.0%), lymphopenia (33.3%, 25.0%), peripheral edema (33.3%, 16.7%), increased blood alkaline phosphatase (25.0%, 16.7%), and pulmonary embolism (16.7%, 16.7%). Infections were reported in 75.0% of the pts, all grade 1/2. No ICANS was reported in any pt.

At a median follow-up of 3.24 months (range, 1.51-13.47), the unconfirmed ORR by investigator was 100%. Ten pts (83.3%) had confirmed ORR by investigator with a median TTR of 1.41 months (95% CI, 0.53-3.35). Median DOR was not reached.

Conclusions: ELRA + CFZ + DEX has demonstrated clinical efficacy and predictable safety signals. The study continues enrolling and will explore the combination of ELRA + CFZ + DEX in a larger group of pts.

1 month ago Read more

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