TY - JOUR TI - Once-weekly (70 mg/m2) vs twice-weekly (56 mg/m2) dosing of carfilzomib in patients with relapsed or refractory multiple myeloma: A post hoc analysis of the ENDEAVOR, A.R.R.O.W., and CHAMPION-1 trials AU - Moreau, P. AU - Stewart, K.A. AU - Dimopoulos, M. AU - Siegel, D. AU - Facon, T. AU - Berenson, J. AU - Raje, N. AU - Berdeja, J.G. AU - Orlowski, R.Z. AU - Yang, H. AU - Ma, H. AU - Klippel, Z. AU - Zahlten-Kumeli, A. AU - Mezzi, K. AU - Iskander, K. AU - Mateos, M.-V. JO - Cancer Medicine PY - 2020 VL - 9 TODO - 9 SP - 2989-2996 PB - Wiley-Blackwell Publishing Ltd SN - 2045-7634 TODO - 10.1002/cam4.2945 TODO - carfilzomib; carfilzomib; oligopeptide, acute kidney failure; aged; Article; cohort analysis; comparative effectiveness; controlled study; dosage schedule comparison; drug efficacy; drug response; drug safety; female; heart failure; human; hypertension; major clinical study; male; median survival time; multiple myeloma; priority journal; progression free survival; relapse; vein embolism; comparative study; dose response; drug administration; drug effect; drug resistance; follow up; middle aged; multicenter study (topic); multiple myeloma; pathology; phase 3 clinical trial (topic); prognosis; randomized controlled trial (topic); salvage therapy; survival rate; tumor recurrence, Aged; Clinical Trials, Phase III as Topic; Dose-Response Relationship, Drug; Drug Administration Schedule; Drug Resistance, Neoplasm; Female; Follow-Up Studies; Humans; Male; Middle Aged; Multicenter Studies as Topic; Multiple Myeloma; Neoplasm Recurrence, Local; Oligopeptides; Prognosis; Randomized Controlled Trials as Topic; Salvage Therapy; Survival Rate TODO - Combination of carfilzomib with dexamethasone (Kd) is approved for use in relapsed and/or refractory multiple myeloma (RRMM), with carfilzomib administered twice weekly at 56 mg/m2 (Kd56 BIW) or once weekly at 70 mg/m2 (Kd70 QW). Post hoc cross-trial comparisons were performed to compare efficacy and safety profiles of Kd70 QW vs Kd56 BIW dosing schedules using data from three trials of patients with RRMM: A.R.R.O.W., CHAMPION-1, and ENDEAVOR. To select for comparable patient populations, side-by-side efficacy and safety comparisons were performed in subgroups of patients with 2-3 prior lines of therapy who were not refractory to bortezomib. The overall response rate (ORR) was 69.9% (95% confidence interval [CI], 61.7-77.2) for Kd70 QW and 72.4% (95% CI, 65.9-78.2) for Kd56 BIW. Median progression-free survival (PFS) was 12.1 months (95% CI, 8.4-14.3) for Kd70 QW and 14.5 months (95% CI, 10.2—not evaluable) for Kd56 BIW. Frequency of grade ≥ 3 adverse events (AEs) was 67.6% for Kd70 QW and 85.3% for Kd56 BIW. Regression analyses (adjusting for prognostic factors) of all patients in the trials who received Kd70 QW vs Kd56 BIW estimated a PFS hazard ratio of 0.91 (95% CI, 0.69-1.19; P =.47) and an ORR odds ratio of 1.12 (95% CI, 0.74-1.69; P =.61). These results suggest that Kd70 QW has a comparable efficacy profile compared with Kd56 BIW and represents a convenient and well-tolerated treatment for patients with RRMM. © 2020 The Authors. Cancer Medicine published by John Wiley & Sons Ltd. ER -