Although Merck & Co., Inc.’s Keytruda is being investigated in a multitude of combination trials – the company cites more than 200 studies in lung cancer alone – it’s still somewhat surprising when the market-leading anti-PD-1 checkpoint inhibitor produces a negative dataset. In a 24-hour period, the New Jersey pharma got both positive combo data in first-line renal cell carcinoma as well as a failed pairing in PD-L1-positive lung cancer.
After the markets closed on 9 November, Merck & Co. revealed that the KEYNOTE-598 study testing Keytruda (pembrolizumab) with







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