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Lookup NU author(s): Professor Graham Jackson
This work is licensed under a Creative Commons Attribution 4.0 International License (CC BY 4.0).
PURPOSE: The multicenter OPTIMUM (MUKnine) phase II trial investigated daratumumab, low-dose cyclophosphamide, lenalidomide, bortezomib, and dexamethasone (Dara-CVRd) before and after autologous stem-cell transplant (ASCT) in newly diagnosed patients with molecularly defined ultra-high-risk (UHiR) multiple myeloma (NDMM) or plasma cell leukemia (PCL). To provide clinical context, progression-free survival (PFS) and overall survival (OS) were referenced to contemporaneous outcomes seen in patients with UHiR NDMM treated in the recent Myeloma XI (MyeXI) trial. METHODS: Transplant-eligible all-comers NDMM patients were profiled for UHiR disease, defined by presence of ≥2 genetic risk markers t(4;14)/t(14;16)/t(14;20), del(1p), gain(1q), and del(17p), and/or SKY92 gene expression risk signature. Patients with UHiR MM/PCL were offered treatment with Dara-CVRd induction, V-augmented ASCT, extended Dara-VR(d) consolidation, and Dara-R maintenance. UHiR patients treated in MyeXI with carfilzomib, lenalidomide, dexamethasone, and cyclophosphamide, or lenalidomide, dexamethasone, and cyclophosphamide, ASCT, and R maintenance or observation were identified by mirrored molecular screening. OPTIMUM PFS at 18 months (PFS18m) was compared against MyeXI using a Bayesian framework, and patients were followed up to the end of consolidation for PFS and OS. RESULTS: Of 412 screened NDMM OPTIMUM patients, 103 were identified as UHiR or PCL and subsequently treated on trial with Dara-CVRd; 117 MyeXI patients identified as UHiR formed the external comparator arm, with comparable clinical and molecular characteristics to OPTIMUM. Comparison of PFS18m per Bayesian framework resulted in a 99.5% chance of OPTIMUM being superior to MyeXI. At 30 months' follow-up, PFS was 77% for OPTIMUM versus 39.8% for MyeXI, and OS 83.5% versus 73.5%, respectively. Extended post-ASCT Dara-VRd consolidation therapy was highly deliverable, with limited toxicity. CONCLUSION: Our results suggest that Dara-CVRd induction and extended post-ASCT Dara-VRd consolidation markedly improve PFS for UHiR NDMM patients over conventional management, supporting further evaluation of this strategy.
Author(s): Kaiser MF, Hall A, Walker K, Sherborne A, De Tute RM, Newnham N, Roberts S, Ingleson E, Bowles K, Garg M, Lokare A, Messiou C, Houlston RS, Jackson G, Cook G, Pratt G, Owen RG, Drayson MT, Brown SR, Jenner MW
Publication type: Article
Publication status: Published
Journal: Journal of Clinical Oncology
Year: 2023
Volume: 41
Issue: 23
Pages: 3945-3955
Print publication date: 10/08/2023
Online publication date: 14/06/2023
Acceptance date: 02/05/2023
Date deposited: 31/08/2023
ISSN (print): 0732-183X
ISSN (electronic): 1527-7755
Publisher: American Society of Clinical Oncology
URL: https://doi.org/10.1200/JCO.22.02567
DOI: 10.1200/JCO.22.02567
PubMed id: 37315268
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