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Carfilzomib monotherapy in Japanese patients with relapsed or refractory multiple myeloma: A phase 1/2 study. | LitMetric

AI Article Synopsis

  • This study assessed the effectiveness and safety of carfilzomib, a drug for multiple myeloma, in 50 Japanese patients who had not responded to previous treatments, averaging five prior therapies each.* -
  • Patients in phase 2 received a dose of 20/27 mg/m, leading to a 22.5% overall response rate and a median progression-free survival of 5.1 months, with long-term exposure lasting up to nearly 40 months.* -
  • The treatment showed a generally favorable safety profile, with common severe side effects including lymphopenia, neutropenia, and leukopenia, suggesting that carfilzomib could be a viable option for these patients.*

Article Abstract

This multicenter, open-label phase 1/2 study evaluated single-agent carfilzomib in 50 heavily pretreated Japanese patients with relapsed/refractory multiple myeloma (median of five prior treatments). In phase 1, patients were dosed at three levels: 15, 20, or 20/27 mg/m . Maximum tolerated dosage was not reached at the tolerability evaluation. Patients in phase 2 were treated with 20/27 mg/m carfilzomib. Median duration of exposure to carfilzomib in the 20/27 mg/m group at this final analysis was 4.7 months (range: 0.3-39.4). Overall response rate in the 20/27 mg/m group, primary endpoint of the study, was 22.5% (n = 9) (95% confidence interval, 12.3-37.5) with 2.5% (n = 1) stringent complete response. Median progression-free survival and overall survival in the 20/27 mg/m group were 5.1 months (95% CI, 2.8-13.6) and 22.9 months (95% CI, 14.1-not estimable), respectively. Frequently occurring grade ≥3 adverse events in the 20/27 mg/m group included lymphopenia (72.5%), neutropenia (40.0%), and leukopenia (32.5%). Giving long-term carfilzomib monotherapy led to long-term overall survival for heavily pretreated multiple myeloma patients with a favorable safety profile. Carfilzomib monotherapy can be a good option for heavily pretreated multiple myeloma patients.

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Source
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6726678PMC
http://dx.doi.org/10.1111/cas.14139DOI Listing

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