Pembrolizumab plus Chemotherapy in Metastatic Non-Small-Cell Lung Cancer

Leena Gandhi, Delvys Rodríguez-Abreu, Shirish Gadgeel, Emilio Esteban, Enriqueta Felip, Flávia De Angelis, Manuel Domine, Philip Clingan, Maximilian J Hochmair, Steven F Powell, Susanna Y-S Cheng, Helge G Bischoff, Nir Peled, Francesco Grossi, Ross R Jennens, Martin Reck, Rina Hui, Edward B Garon, Michael Boyer, Belén Rubio-ViqueiraSilvia Novello, Takayasu Kurata, Jhanelle E Gray, John Vida, Ziwen Wei, Jing Yang, Harry Raftopoulos, M Catherine Pietanza, Marina C Garassino, KEYNOTE-189 Investigators, Michael Boyer, Victoria Bray, Baerin Ben Houghton, Jens Benn Sørensen, Karin Holmskov Hansen, Miroslaw Jan Stelmach, William V. Walsh, John Wrangle, Stephen H. Wrzesinski

2051 Citationer (Scopus)

Abstract

BACKGROUND First-line therapy for advanced non-small-cell lung cancer (NSCLC) that lacks targetable mutations is platinum-based chemotherapy. Among patients with a tumor proportion score for programmed death ligand 1 (PD-L1) of 50% or greater, pembrolizumab has replaced cytotoxic chemotherapy as the first-line treatment of choice. The addition of pembrolizumab to chemotherapy resulted in significantly higher rates of response and longer progression-free survival than chemotherapy alone in a phase 2 trial. METHODS In this double-blind, phase 3 trial, we randomly assigned (in a 2:1 ratio) 616 patients with metastatic nonsquamous NSCLC without sensitizing EGFR or ALK mutations who had received no previous treatment for metastatic disease to receive pemetrexed and a platinum-based drug plus either 200 mg of pembrolizumab or placebo every 3 weeks for 4 cycles, followed by pembrolizumab or placebo for up to a total of 35 cycles plus pemetrexed maintenance therapy. Crossover to pembrolizumab monotherapy was permitted among the patients in the placebo-combination group who had verified disease progression. The primary end points were overall survival and progression-free survival, as assessed by blinded, independent central radiologic review. RESULTS After a median follow-up of 10.5 months, the estimated rate of overall survival at 12 months was 69.2% (95% confidence interval [CI], 64.1 to 73.8) in the pembrolizumab- combination group versus 49.4% (95% CI, 42.1 to 56.2) in the placebocombination group (hazard ratio for death, 0.49; 95% CI, 0.38 to 0.64; P<0.001). Improvement in overall survival was seen across all PD-L1 categories that were evaluated. Median progression-free survival was 8.8 months (95% CI, 7.6 to 9.2) in the pembrolizumab-combination group and 4.9 months (95% CI, 4.7 to 5.5) in the placebo-combination group (hazard ratio for disease progression or death, 0.52; 95% CI, 0.43 to 0.64; P<0.001). Adverse events of grade 3 or higher occurred in 67.2% of the patients in the pembrolizumab-combination group and in 65.8% of those in the placebo-combination group. CONCLUSIONS In patients with previously untreated metastatic nonsquamous NSCLC without EGFR or ALK mutations, the addition of pembrolizumab to standard chemotherapy of pemetrexed and a platinum-based drug resulted in significantly longer overall survival and progression-free survival than chemotherapy alone.

OriginalsprogEngelsk
TidsskriftThe New England Journal of Medicine
Vol/bind378
Udgave nummer22
Sider (fra-til)2078-2092
ISSN0028-4793
DOI
StatusUdgivet - 31 maj 2018

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