Merck & Co. Inc.'s stunning success in first-line metastatic lung cancer trials of Keytruda at the American Society of Clinical Oncology (ASCO) annual meeting set a high efficacy bar with prescribers and left its PD-1/L1 inhibitor rivals Bristol-Myers Squibb Co. and Roche on the defense.
Roche, Bristol On The Defensive After Merck's Lung Cancer Wins At ASCO
With Merck's Keytruda on top of the world and setting the standard for PD-1/L1 lung cancer data, Roche and Bristol defended the programs for their competing Tecentriq and Opdivo during ASCO investor events.

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