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Poster Display

2641 - Pembrolizumab in combination with lenalidomide and low-dose dexamethasone in newly diagnosed and treatment-naive multiple myeloma (MM): randomized, phase 3 KEYNOTE-185 study


08 Oct 2016


Poster Display


Antonio Palumbo


Annals of Oncology (2016) 27 (6): 313-327. 10.1093/annonc/mdw375


A. Palumbo1, M. Mateos2, J. San Miguel3, J. Shah4, S. Thompson5, P. Marinello5, S. Jagannath6

Author affiliations

  • 1 Medical Oncology, University of Torino, 8 - Torino/IT
  • 2 Medical Oncology, University Hospital of Salamanca/IBSAL, 37007 - Salamanca/ES
  • 3 Hematology, University of Navarra, Pamplona/ES
  • 4 Division Of Cancer Medicine, The University of Texas MD Anderson Cancer Center, Houston/US
  • 5 Medical Oncology, Merck & Co., Inc., Kenilworth/US
  • 6 Medical Oncology, Mount Sinai Medical Center, New York/US


Abstract 2641


PD-L1 is expressed on MM plasma cells and has been associated with higher MM cell proliferation. Thus, PD-L1 blockade with pembrolizumab may act synergistically with immunomodulatory drugs to enhance MM tumor suppression. In the phase 1 KEYNOTE-023 study, pembrolizumab + lenalidomide and low-dose dexamethasone showed an acceptable safety profile and promising preliminary efficacy in patients with relapsed/refractory MM, supporting further evaluation of this treatment combination. The randomized, open-label, phase 3 KEYNOTE-185 study (ClinicalTrials.gov, NCT02579863) was designed to compare the efficacy and safety of lenalidomide and low-dose dexamethasone (standard of care) with or without pembrolizumab in patients with newly diagnosed and treatment-naive MM.

Trial design

Key eligibility criteria include age ≥18 years, newly diagnosed, treatment-naive, active MM with measurable disease, and ineligibility for autologous stem cell transplantation. Patients will be randomized 1:1 to receive lenalidomide 25 mg daily on days 1-21 and low-dose dexamethasone 40 mg on days 1, 8, 15, and 22 of repeated 28-day cycles, with or without pembrolizumab 200 mg every 3 weeks. Patients will be stratified based on age (

Clinical trial identification


Legal entity responsible for the study

Merck & Co., Inc.


Merck & Co., Inc.


J. San Miguel: Advisory board member for Celgene, Onyx, Novartis, Janssen, Amgen, Millennium, BMS, MSD. S. Thompson: Employee and Stockholder of Merck & Co Inc. P. Marinello: Employee of Merck & Co, Inc. All other authors have declared no conflicts of interest.

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