Abstract
The second-generation proteasome inhibitor carfilzomib produces superior outcomes in relapsed or refractory multiple myeloma (MM). We conducted a single-arm trial of twice-weekly carfilzomib (27 mg/m2)-dexamethasone (Kd27) for relapsed and refractory MM in China. Kd27 was administered in 28-day cycles to 123 patients previously treated with ≥ 2 other regimens, including treatment with bortezomib and an immunomodulatory drug, and refractory to their most recent therapy. Overall response rate (ORR) was the primary endpoint; progression-free survival (PFS) and overall survival (OS) were key secondary endpoints. Primary analysis was conducted when all patients received ≥ 6 cycles of Kd27 or discontinued Kd27. Median age was 60 years; median number of prior regimens was 4; 74% were refractory to proteasome inhibitors and immunomodulatory drugs. ORR was 35.8% (95% CI 27.3–44.9), median PFS was 5.6 (95% CI 4.6–6.5) months, and median OS was 16.6 (95% CI 12.2–NE) months. Grade ≥ 3 adverse events (AEs) occurred in 76.4% of patients. Grade ≥ 3 AEs of interest included hypertension (13.8%), acute renal failure (3.3%), cardiac failure (0.8%), ischemic heart disease (0.0%), and peripheral neuropathy (0.0%); 5.7% of patients discontinued carfilzomib due to AEs. Carfilzomib–dexamethasone produced a clinically meaningful response without new safety findings in Chinese patients with previously treated MM.
Trial registration: NCT03029234.
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Acknowledgements
Onyx Pharmaceuticals, Inc., an Amgen subsidiary, funded the study and was involved in study design; collection, analysis, and interpretation of data; and in the decision to submit this article for publication. We thank Yejiang Lou of Amgen China for providing valuable feedback during content development, and Yejiang Lou and Lin Shi of Amgen China for facilitating communication between the authors. Medical writing assistance was provided by Yin C. Lin of Amgen Inc., and funded by Amgen.
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This study and the manuscript development were supported by Amgen Inc., Thousand Oaks, CA, USA.
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JD, BF, JL, JJ, SW, DZ, ZC, HW, Jianda H, WL, CF, ZS, ZX, PL, TN, Jian H, and WC declare no conflicts of interest. E-TT reports employment with Amgen and stock holdings from Amgen. ASK reports employment with Amgen and stock holdings from Amgen and WindMIL.
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Du, J., Fang, B., Li, J. et al. A study of carfilzomib and dexamethasone in patients with relapsed and refractory multiple myeloma in China. Int J Hematol 113, 422–429 (2021). https://doi.org/10.1007/s12185-020-03044-z
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DOI: https://doi.org/10.1007/s12185-020-03044-z