Immune checkpoint inhibitors are associated with durable and well-tolerated responses in metastatic urothelial carcinoma. Predicting which patients respond to therapy has been challenging; however, progress has been made using programmed cell death 1 ligand 1 as a biomarker and a second generation of biomarkers, which are being assessed.
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T.P. has received research funding and honoraria from Merck Pfizer, AstraZenca, Bristol-Myers Squibb, Roche, Novartis, and GlaxoSmithKline. L.M. declares no competing interests.
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Powles, T., Morrison, L. Biomarker challenges for immune checkpoint inhibitors in urothelial carcinoma. Nat Rev Urol 15, 585–587 (2018). https://doi.org/10.1038/s41585-018-0056-3
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DOI: https://doi.org/10.1038/s41585-018-0056-3
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