Abstract
In the KEYNOTE-189 trial, Gandhi et al. (May 31 issue)1 compared pembrolizumab plus chemotherapy with chemotherapy alone in patients with untreated metastasic non–small-cell lung cancer. They concluded that patients with a tumor proportion score of 50% or more for programmed death ligand 1 (PD-L1) showed a greater benefit with the combination regimen.

This publication has 13 references indexed in Scilit: