PMID- 35417741 OWN - NLM STAT- MEDLINE DCOM- 20220621 LR - 20221006 IS - 1873-2399 (Electronic) IS - 0301-472X (Linking) VI - 111 DP - 2022 Jul TI - A phase 1/2 study of ixazomib in place of bortezomib or carfilzomib in a subsequent line of therapy for patients with multiple myeloma refractory to their last bortezomib or carfilzomib combination regimen. PG - 79-86 LID - S0301-472X(22)00157-6 [pii] LID - 10.1016/j.exphem.2022.04.003 [doi] AB - Identifying effective combination regimens is a high priority in multiple myeloma (MM), as most patients eventually become refractory to their current treatments. In this study, we investigated whether the proteasome inhibitor (PI) ixazomib could delay disease progression among patients who failed regimens containing another PI, bortezomib or carfilzomib. This phase 1/2, multicenter, open-label, nonrandomized study enrolled patients who were refractory to a previous regimen containing bortezomib or carfilzomib. Patients continued the other anti-MM drugs in the regimen at the same doses and frequencies. Patients with combination regimens with unknown maximum tolerated dose (MTD) of ixazomib were enrolled in phase 1, with ixazomib starting at 3 mg and then dose escalated to 4 mg. Patients on regimens with a known ixazomib MTD were enrolled in phase 2. Primary endpoints were overall response rate (ORR), clinical benefit rate (CBR), adverse events (AEs), and determination of maximum tolerated dose (MTD). Of the 46 patients enrolled, 39 were evaluable for efficacy. ORR and CBR were 12.8% and 17.9%, respectively. Ixazomib appeared to be well tolerated as a replacement for carfilzomib and bortezomib, with 23.9% of patients experiencing at least one grade >/=3 serious adverse event (SAE) and 37.0% experiencing at least one grade >/=3 AE. The most common grade >/=3 AEs were hyponatremia (8.7%), anemia (8.7%), dyspnea (8.7%), thrombocytopenia (6.5%), dehydration (4.3%), and pneumonia (4.3%). The results indicate that ixazomib is not an effective replacement for bortezomib or carfilzomib for patients with MM who have previously relapsed on other bortezomib/carfilzomib-containing regimens. CI - Copyright (c) 2022. Published by Elsevier Inc. FAU - Daniely, David AU - Daniely D AD - Institute for Myeloma & Bone Cancer Research, Los Angeles, CA. FAU - Forouzan, Eli AU - Forouzan E AD - Oncotherapeutics, Los Angeles, CA. FAU - Spektor, Tanya M AU - Spektor TM AD - Oncotherapeutics, Los Angeles, CA. FAU - Cohen, Alexa AU - Cohen A AD - Oncotherapeutics, Los Angeles, CA. FAU - Bitran, Jacob D AU - Bitran JD AD - Oncology Specialists SC, Park Ridge, IL. FAU - Chen, Gigi AU - Chen G AD - John Muir Medical Center, Walnut Creek, CA. FAU - Moezi, Mehdi M AU - Moezi MM AD - Cancer Specialists of North Florida, Fleming Island, FL. FAU - Bessudo, Alberto AU - Bessudo A AD - California Cancer Associates for Research & Excellence (cCARE), Encinitas, CA. FAU - Hrom, John AU - Hrom J AD - Hattiesburg Clinic of Hematology and Oncology, Hattiesburg, MS. FAU - Eshaghian, Shahrooz AU - Eshaghian S AD - Compassionate Oncology Medical Group, Los Angeles, CA. FAU - Swift, Regina A AU - Swift RA AD - James R. Berenson, MD, Inc., Los Angeles, CA. FAU - Eades, Benjamin M AU - Eades BM AD - James R. Berenson, MD, Inc., Los Angeles, CA. FAU - Kim, Clara AU - Kim C AD - Oncotherapeutics, Los Angeles, CA. FAU - Lim, Stephen AU - Lim S AD - Cedars-Sinai Cancer Center, West Hollywood, CA. FAU - Berenson, James R AU - Berenson JR AD - Institute for Myeloma & Bone Cancer Research, Los Angeles, CA; Oncotherapeutics, Los Angeles, CA; James R. Berenson, MD, Inc., Los Angeles, CA. Electronic address: jberenson@berensoncancercenter.com. LA - eng PT - Clinical Trial, Phase I PT - Clinical Trial, Phase II PT - Journal Article PT - Multicenter Study PT - Research Support, Non-U.S. Gov't DEP - 20220410 PL - Netherlands TA - Exp Hematol JT - Experimental hematology JID - 0402313 RN - 0 (Boron Compounds) RN - 0 (Oligopeptides) RN - 69G8BD63PP (Bortezomib) RN - 71050168A2 (ixazomib) RN - 72X6E3J5AR (carfilzomib) RN - 7S5I7G3JQL (Dexamethasone) RN - TE7660XO1C (Glycine) SB - IM MH - Antineoplastic Combined Chemotherapy Protocols/adverse effects MH - Boron Compounds MH - Bortezomib MH - Dexamethasone/adverse effects MH - Glycine/analogs & derivatives MH - Humans MH - *Multiple Myeloma/drug therapy MH - Neoplasm Recurrence, Local/drug therapy MH - Oligopeptides COIS- Conflict of interest disclosure This study was funded by Takeda Pharmaceutical Company Limited and performed by the clinical research organization Oncotherapeutics. EDAT- 2022/04/14 06:00 MHDA- 2022/06/22 06:00 CRDT- 2022/04/13 20:06 PHST- 2022/02/25 00:00 [received] PHST- 2022/04/04 00:00 [revised] PHST- 2022/04/05 00:00 [accepted] PHST- 2022/04/14 06:00 [pubmed] PHST- 2022/06/22 06:00 [medline] PHST- 2022/04/13 20:06 [entrez] AID - S0301-472X(22)00157-6 [pii] AID - 10.1016/j.exphem.2022.04.003 [doi] PST - ppublish SO - Exp Hematol. 2022 Jul;111:79-86. doi: 10.1016/j.exphem.2022.04.003. Epub 2022 Apr 10.