Beyond PD-L1: In Search of Better Biomarkers

Posted by Sharon Karlsberg on Jul 14, 2017 8:00:00 AM

Tyler Vogt co-wrote this blog post with Sharon Karlsberg. 

Since their first approval in 2014, PD-L1 and PD-1 checkpoint inhibitors have become the backbone therapy in multiple tumor types: melanoma, bladder cancer and non-small-cell lung cancer (NSCLC). Although only 20 to 35% of patients respond to these therapies, approvals in melanoma, bladder cancer and second-line lung cancer didn’t require an associated diagnostic test for PD-L1 status. Until the failure of BMS’s CheckMate-026 trial in first-line NSCLC, oncologists were asking the question, “Should I test for PD-L1?”

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