Once-weekly vs. twice-weekly carfilzomib dosing in a subgroup of Japanese relapsed and refractory multiple myeloma patients from a randomized phase 3 trial (A.R.R.O.W.) and comparison with ENDEAVOR

Naoki Takezako, Hirohiko Shibayama, Hiroshi Handa, Shotaro Hagiwara, Shuji Ozaki, Kenshi Suzuki, Hiroshi Kosugi, Masaki Ri, Isamu Sugiura, Ilseung Choi, Toshihiro Miyamoto, Shinsuke Iida

Research output: Contribution to journalArticlepeer-review

Abstract

A.R.R.O.W. evaluated the superiority of once-weekly carfilzomib plus dexamethasone (Kd) 20/70 mg/m2 vs. twice-weekly Kd 20/27 mg/m2 based on progression-free survival (PFS) in relapsed and/or refractory multiple myeloma patients. Forty Japanese patients (once-weekly arm, n = 26; twice-weekly arm, n = 14) were randomized in A.R.R.O.W. In the Japanese subgroup of A.R.R.O.W., median PFS was 14.8 months (95% confidence interval [CI], 7.5–not evaluable [NE]) and 9.7 months (95% CI, 3.8–NE) in the once- and twice-weekly arms, respectively. The overall response rate (ORR) was 73.1% (19/26; 95% CI, 52.2–88.4) and 57.1% (8/14; 95% CI, 28.9–82.3) in each arm. The adverse events (AEs) incidence was 100% in both arms. Grade ≥ 3 AE incidence was 80.8% (21/26) and 78.6% (11/14) in each arm. Two fatal treatment-related AEs (acute lung injury and acute respiratory distress syndrome) occurred in the once-weekly arm. In exploratory unadjusted analyses of A.R.R.O.W. (once-weekly Kd 20/70 mg/m2) vs. ENDEAVOR (twice-weekly Kd 20/56 mg/m2), median PFS was 14.8 months vs. NE due to not yet being reached, and ORR was 73.1% (19/26) vs. 42.9% (3/7). In the Japanese subgroup, once-weekly Kd tended to improve ORR vs. twice-weekly Kd. Results from A.R.R.O.W. tended to be consistent with results from ENDEAVOR.

Original languageEnglish
Pages (from-to)219-230
Number of pages12
JournalInternational journal of hematology
Volume113
Issue number2
DOIs
Publication statusPublished - Feb 2021

All Science Journal Classification (ASJC) codes

  • Hematology

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