Elotuzumab plus lenalidomide/dexamethasone for relapsed or refractory multiple myeloma: ELOQUENT-2 follow-up and post-hoc analyses on progression-free survival and tumour growth

Meletios A. Dimopoulos, Sagar Lonial, Darrell White, Philippe Moreau, Antonio Palumbo, Jesus San-Miguel, Ofer Shpilberg, Kenneth Anderson, Sebastian Grosicki, Ivan Spicka, Adam Walter-Croneck, Hila Magen, Maria Victoria Mateos, Andrew Belch, Donna Reece, Meral Beksac, Eric Bleickardt, Valerie Poulart, Jennifer Sheng, Oumar SyJessica Katz, Anil Singhal, Paul Richardson

Research output: Contribution to journalArticlepeer-review

93 Scopus citations

Abstract

The randomized phase III ELOQUENT-2 study (NCT01239797) evaluated the efficacy and safety of elotuzumab + lenalidomide/dexamethasone (ELd) versus lenalidomide/dexamethasone (Ld) in relapsed/refractory multiple myeloma. ELd reduced the risk of disease progression/death by 30% versus Ld (hazard ratio [HR] 0·70). Median time from diagnosis was 3·5 years. We present extended 3-year follow-up data. Endpoints included progression-free survival (PFS), overall response rate (ORR) and interim overall survival (OS). Exploratory post-hoc analyses included impact of time from diagnosis and prior lines of therapy on PFS, and serum M-protein dynamic modelling. ORR was 79% (ELd) and 66% (Ld) (P = 0·0002). ELd reduced the risk of disease progression/death by 27% versus Ld (HR 0·73; P = 0·0014). Interim OS demonstrated a trend in favour of ELd (P = 0·0257); 1-, 2- and 3-year rates with ELd versus Ld were: 91% versus 83%, 73% versus 69% and 60% versus 53%. In patients with ≥ median time from diagnosis and one prior therapy, ELd resulted in a 53% reduction in the risk of progression/death versus Ld (HR 0·47). Serum M-protein dynamic modelling showed slower tumour regrowth with ELd. Adverse events were comparable between arms. ELd provided a durable and clinically relevant improvement in efficacy, with minimal incremental toxicity.

Original languageEnglish
Pages (from-to)896-905
Number of pages10
JournalBritish Journal of Haematology
Volume178
Issue number6
DOIs
StatePublished - 1 Sep 2017
Externally publishedYes

Keywords

  • elotuzumab
  • monoclonal antibody
  • multiple myeloma
  • overall survival
  • progression-free survival

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