Abstract
Carfilzomib is an irreversible proteasome inhibitor used for the treatment of relapsed and/or refractory multiple myeloma (RRMM). We evaluated the efficacy and safety of carfilzomib in subgroups of Asian patients in the randomized phase 3 ENDEAVOR and A.R.R.O.W. trials. In ENDEAVOR, patients received carfilzomib twice-weekly (56 mg/m2) plus dexamethasone (Kd; n = 56) or bortezomib plus dexamethasone (Vd; n = 57). In A.R.R.O.W., patients received carfilzomib once-weekly (70 mg/m2, n = 30) or twice-weekly (27 mg/m2, n = 15) plus dexamethasone. Median progression-free survival (PFS) among Asian patients in ENDEAVOR was longer with Kd than with Vd (14.9 versus 8.8 months; HR 0.599); the overall response rate (ORR) was 80.4% versus 70.2%. Median overall survival (Kd versus Vd) was 47.6 versus 38.8 months (HR 0.856). Median PFS among Asian patients in A.R.R.O.W. was longer for once-weekly versus twice-weekly Kd (16.0 versus 8.4 months; HR 0.628); ORR was 76.7% versus 53.3%. Rates of grade ≥ 3 adverse events were 89.1% (Kd) and 89.5% (Vd) in ENDEAVOR, and 76.6% (once-weekly Kd) versus 73.3% (twice-weekly Kd) in A.R.R.O.W. Overall, carfilzomib had a favorable benefit-risk profile across both dosing regimens [once-weekly (Kd 70 mg/m2) and twice-weekly (Kd 56 mg/m2)] in Asian patients with RRMM, which was consistent with the results of both parent studies.
Trial registration ClinicalTrials.gov: NCT01568866, NCT02412878.
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Acknowledgements
The authors thank the patients and sites for their participation in the ENDEAVOR and A.R.R.O.W. trials. Jesse Potash, PhD (Amgen Inc.) and Meghan Johnson, PhD (Complete Healthcare Communications, LLC, an ICON plc company, North Wales, PA, USA), whose work was funded by Amgen Inc., provided medical writing assistance in the preparation of this manuscript.
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The ENDEAVOR and A.R.R.O.W. studies were sponsored and funded by Amgen Inc.
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MAD reports receiving honoraria and consulting and/or advisory role fees from Celgene, Janssen, Amgen Inc., Novartis, and Takeda, and research funding from Genesis Pharma. PM reports receiving honoraria from and advisory board participation with Amgen Inc., Celgene, Takeda, Janssen, and AbbVie. SI reports receiving research grants and consulting fees from Ono Pharmaceutical Co., Ltd., Janssen, Celgene, Takeda, Bristol-Myers Squibb, and Novartis; and research grants from Chugai, Teijin Pharma, Astellas, Toyama Chemical, Eli Lilly, Kyowa Hakko Kirin, Sanofi, AbbVie, Merck Sharp & Dohme, and Daiichi Sanko. WJC reports receiving research grants from Celgene, Janssen, Novartis, Takeda, and Amgen Inc.; and consulting fees from Celgene, Janssen, Novartis, Takeda, and Amgen Inc. AZ-K, MAS, JL, and MH are employees of and own stock in Amgen Inc. S-YH, NT, and JHL have nothing to disclose.
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Dimopoulos, M.A., Moreau, P., Iida, S. et al. Outcomes for Asian patients with multiple myeloma receiving once- or twice-weekly carfilzomib-based therapy: a subgroup analysis of the randomized phase 3 ENDEAVOR and A.R.R.O.W. Trials. Int J Hematol 110, 466–473 (2019). https://doi.org/10.1007/s12185-019-02704-z
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DOI: https://doi.org/10.1007/s12185-019-02704-z