Article Abstract

New insights in predictive determinants of the tumor immune microenvironment for immune checkpoint inhibition: a never ending story?

Authors: Markus Eckstein, Shilpa Gupta

Abstract

Checkpoint inhibitors such as Pembrolizumab (Keytruda®, MSD), Atezolizumab (Tecentriq®, Roche), Durvalumab (Imfinzi®, AstraZeneca) or Nivolumab (Opdivo®, BMS) have significantly improved curative and palliative treatment of solid malignancies (1-4). However, clinical responses vary largely across different tumor entities. Since the currently used standard predictive tool—PD-L1 assessment by immunohistochemistry—shows largely varying predictive efficacy in different tumor types, e.g., in urothelial cancer (5-7), there is a heavy need for additional complementary biomarkers which can improve the current immunotherapy selection and prediction of therapy success.

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