Real-World Evaluation of Talquetamab for the Treatment of Relapsed/Refractory Multiple Myeloma (RRMM): An International Myeloma Working Group Immunotherapy Registry Real-World Analysis - Report - MDSpire
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Assessment of Talquetamab in Treating Relapsed/Refractory Multiple Myeloma: Insights from an International Immunotherapy Registry Analysis

  • By

  • Murali Janakiram

  • Carlyn R. Tan

  • Hira Mian

  • Chiung-Yu Huang

  • Rakesh Popat

  • Joaquín Martínez-Lopez

  • Efsthathios Kastritis

  • Wee-Joo Chng

  • Prashant Kapoor

  • Mrugakshi Dave

  • Susan Bal

  • Laurent Garderet

  • Andre De Menezes Silva Corraes

  • Christine Riedhammer

  • Torsten Steinbrunn

  • Magdalene Corona

  • Chandramouli Nagarajan

  • Hermann Einsele

  • Tom Martin

  • Amrita Krishnan

  • Yi Lin

  • May 19, 2026

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Clinical Report: Assessment of Talquetamab in Treating Relapsed/Refractory Multiple Myeloma

Overview

Talquetamab, a GPRC5D bispecific antibody, shows a 74% overall response rate in T-cell–redirection–naive patients with relapsed refractory multiple myeloma. Real-world data from 151 patients indicate significant treatment responses.

Background

Relapsed refractory multiple myeloma (RRMM) poses significant treatment challenges, particularly in heavily pretreated patients. Talquetamab has received accelerated approval for RRMM after multiple lines of therapy. This analysis aims to provide insights into talquetamab's use outside clinical trial settings.

Data Highlights

ParameterValue
Overall Response Rate (ORR) in T-cell–redirection–naive patients (0.4 mg/kg weekly)74%
Overall Response Rate (ORR) in T-cell–redirection–naive patients (0.8 mg/kg every-2-weeks)69%
Overall Response Rate (ORR) in previously treated patients67%
Median Progression-Free Survival (PFS)7.7 months
Median Age of Patients64 years

Key Findings

  • Talquetamab achieved an overall response rate of 74% in T-cell–redirection–naive patients.
  • Patients in the study had a median of 6 prior lines of therapy, with 91% being triple-refractory.
  • High-risk cytogenetic abnormalities were present in 42% of patients.
  • Adverse events included cytokine release syndrome, immune effector cell-associated neurotoxicity syndrome, and infections.
  • 55% of patients would not have met eligibility criteria for the MonumenTAL-1 study.

Clinical Implications

Monitoring for adverse events such as cytokine release syndrome and neurotoxicity is important in patients receiving talquetamab.

Conclusion

Talquetamab demonstrates efficacy in a real-world setting for patients with relapsed refractory multiple myeloma.

Related Resources & Content

  1. Blood Cancer Journal, 2026 -- Real-World Assessment of Talquetamab for Relapsed Refractory Multiple Myeloma: A Multi-Center Study
  2. FDA, 2025 -- TALVEY® (talquetamab-tgvs) demonstrates highly durable, longer-term responses in patients with relapsed or refractory multiple myeloma
  3. The ASCO Post — Relapsed or Refractory Multiple Myeloma: Talquetamab/Daratumumab
  4. ADA News — More on Multiple Myeloma From ASCO 2023: Focus on Bispecific Antibodies
  5. Blood Cancer Journal (Nature Portfolio) — Efficacy and safety of talquetamab in relapsed/refractory multiple myeloma and renal impairment: a quaternary cancer center cohort
  6. Relapsed or Refractory Multiple Myeloma: Talquetamab/Daratumumab
  7. More on Multiple Myeloma From ASCO 2023: Focus on Bispecific Antibodies
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  9. Safety and activity of talquetamab in patients with relapsed or refractory multiple myeloma (MonumenTAL-1): a multicentre, open-label, phase 1–2 study - ScienceDirect
  10. TALVEY® (talquetamab-tgvs) demonstrates highly durable, longer-term responses in patients with relapsed or refractory multiple myeloma
  11. American Journal of Hematology | Blood Research Journal | Wiley Online Library
  12. Monitoring, prophylaxis, and treatment of infections in patients with MM receiving bispecific antibody therapy: consensus recommendations from an expert panel | Blood Cancer Journal
  13. Talquetamab–Daratumumab in Relapsed or Refractory Myeloma | New England Journal of Medicine
  14. Dual Targeting of Extramedullary Myeloma with Talquetamab and Teclistamab | New England Journal of Medicine

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