Bristol-Myers Squibb Co.'s PD-1 inhibitor Opdivo continues to deliver impressive sales despite increased competition, but uncertainties about the all-important CheckMate 227 study of combination use with Yervoy in first-line non-small cell lung cancer, including the relevance of tumor mutation burden as an emerging immuno-oncology biomarker, cast a bit of a cloud on the third quarter.
Bristol's Opdivo Delivers, But CheckMate 227 Uncertainties Cloud Quarter
The use of the emerging tumor mutation burden biomarker and its relevance to the outcome of the CheckMate 227 study of Opdivo/Yervoy in first-line lung cancer was a hot topic during Bristol's Q3 earnings call, but questions remain.

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