iTeos Therapeutics, Inc. (ITOS) and its development partner GSK (GSK) have initiated the first, global Phase 3 registration study of belrestotug + dostarlimab doublet versus placebo + pembrolizumab in patients with previously untreated, unresectable, locally advanced or metastatic PD-L1 selected non-small cell lung cancer. The randomized, double-blind, placebo-controlled, multicenter trial will enroll approximately 1,000 patients with previously untreated, unresectable, locally advanced or metastatic PD-L1 selected NSCLC in North America, South America, Europe and Asia. The primary endpoints of the trial are progression free survival and overall survival. In the GALAXIES Lung-301 trial, patients will be randomized 1:1 to either an intravenous infusion of the belrestotug + dostarlimab doublet or placebo + pembrolizumab.
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