Carfilzomib, lenalidomide, dexamethasone, and cyclophosphamide (KRdc) as induction therapy for transplant-eligible, newly diagnosed multiple myeloma patients (Myeloma XI+): Interim analysis of an open-label randomised controlled trial

Graham H Jackson, Charlotte Pawlyn, David A Cairns, Ruth M de Tute, Anna Hockaday, Corinne Collett, John R Jones, Bhuvan Kishore, Mamta Garg, Cathy D Williams, Kamaraj Karunanithi, Jindriska Lindsay, Alberto Rocci, John A Snowden, Matthew W Jenner, Gordon Cook, Nigel H Russell, Mark T Drayson, Walter M Gregory, Martin F Kaiser, Roger G Owen, Faith E Davies, Gareth J Morgan and the UK NCRI Haemato-oncology Clinical Studies Group

PLOS Medicine, 2021, vol. 18, issue 1, 1-20

Abstract: Background: Carfilzomib is a second-generation irreversible proteasome inhibitor that is efficacious in the treatment of myeloma and carries less risk of peripheral neuropathy than first-generation proteasome inhibitors, making it more amenable to combination therapy. Methods and findings: The Myeloma XI+ trial recruited patients from 88 sites across the UK between 5 December 2013 and 20 April 2016. Patients with newly diagnosed multiple myeloma eligible for transplantation were randomly assigned to receive the combination carfilzomib, lenalidomide, dexamethasone, and cyclophosphamide (KRdc) or a triplet of lenalidomide, dexamethasone, and cyclophosphamide (Rdc) or thalidomide, dexamethasone, and cyclophosphamide (Tdc). All patients were planned to receive an autologous stem cell transplantation (ASCT) prior to a randomisation between lenalidomide maintenance and observation. Eligible patients were aged over 18 years and had symptomatic myeloma. The co-primary endpoints for the study were progression-free survival (PFS) and overall survival (OS) for KRdc versus the Tdc/Rdc control group by intention to treat. PFS, response, and safety outcomes are reported following a planned interim analysis. The trial is registered (ISRCTN49407852) and has completed recruitment. In total, 1,056 patients (median age 61 years, range 33 to 75, 39.1% female) underwent induction randomisation to KRdc (n = 526) or control (Tdc/Rdc, n = 530). After a median follow-up of 34.5 months, KRdc was associated with a significantly longer PFS than the triplet control group (hazard ratio 0.63, 95% CI 0.51–0.76). The median PFS for patients receiving KRdc is not yet estimable, versus 36.2 months for the triplet control group (p

Date: 2021
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Persistent link: https://EconPapers.repec.org/RePEc:plo:pmed00:1003454

DOI: 10.1371/journal.pmed.1003454

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