Isatuximab-Pomalidomide-Dexamethasone Versus Pomalidomide-Dexamethasone in East Asian Patients With Relapsed/Refractory Multiple Myeloma: ICARIA-MM Subgroup Analysis

Clin Lymphoma Myeloma Leuk. 2022 Aug;22(8):e751-e761. doi: 10.1016/j.clml.2022.04.005. Epub 2022 Apr 8.

Abstract

Background: In the pivotal phase III, randomized, multicenter ICARIA-MM study (NCT02990338), isatuximab plus pomalidomide and dexamethasone (Isa-Pd) improved progression-free survival and overall response rate versus pomalidomide and dexamethasone (Pd) in the overall population of patients with relapsed/refractory multiple myeloma.

Patients and methods: In this predefined subgroup analysis, efficacy, and safety between East Asian patients and the overall population were assessed.

Results: In total, 36 East Asian patients were included (Japanese, n = 13; Korean, n = 9; Taiwanese, n = 14). At a median follow-up of 11.6 months, median progression-free survival was not reached (95% confidence interval [CI] 5.80-not calculable) in the Isa-Pd arm and was 7.9 months (95% CI 2.90-not calculable) in the Pd arm. The hazard ratio for the between-group difference was 0.52 (95% CI 0.19-1.39), which was similar to the overall population (hazard ratio, 0.60; 95% CI 0.44-0.82). No new safety signals were observed, except that a higher proportion of patients in the East Asian population experienced Grade ≥ 3 neutropenia compared with the overall population.

Conclusion: These results confirm the efficacy of Isa-Pd in East Asian patients with relapsed/refractory multiple myeloma, and the related safety data are consistent with those observed in the overall population and are manageable.

Keywords: Efficacy and safety; Far East; Isa-Pd; Japan; RRMM.

Publication types

  • Multicenter Study
  • Research Support, Non-U.S. Gov't

MeSH terms

  • Antibodies, Monoclonal, Humanized
  • Antineoplastic Combined Chemotherapy Protocols / adverse effects
  • Dexamethasone / therapeutic use
  • Humans
  • Multiple Myeloma* / drug therapy
  • Neoplasm Recurrence, Local / drug therapy
  • Thalidomide / analogs & derivatives

Substances

  • Antibodies, Monoclonal, Humanized
  • Thalidomide
  • Dexamethasone
  • pomalidomide
  • isatuximab

Associated data

  • ClinicalTrials.gov/NCT02990338