ESMO21: Libtayo extends survival in first-line NSCLC, challenging Keytruda

There’s no shortage of cancer immunotherapies trying to knock Merck & Co’s Keytruda off the top of the tree in previously-untreated non-small cell lung cancer (NSCLC). Sanofi and Regeneron have reported new data for Libtayo that suggests the drug could be a contender.