KENILWORTH, N.J.–(BUSINESS WIRE)–Merck (NYSE: MRK), known as MSD outside the United States and Canada, today announced that the pivotal Phase 3 KEYNOTE-407 trial investigating KEYTRUDA, Merck’s anti-PD-1 therapy, in combination with carboplatin-paclitaxel or nab-paclitaxel, as first-line treatment for metastatic squamous non-small cell lung cancer (sNSCLC), met the dual primary endpoints of overall survival (OS) and …