Welcome to iD PD-L1

Over recent years, there has been increased interest in the potential use of biomarkers in cancer.1–4 PD-L1 is one such biomarker.1

The aim of iD PD-L1 is to provide information for pathologists on PD-L1 expression testing, including: the pre-analytical stages, the practicalities of using, reading, interpreting and reporting PD-L1 assays, and training/quality control measures.


  1. Nishino M, et al. Nat Rev Clin Oncol 2017;14:655-68.
  2. Sundar R, et al. Front Med 2017;4:39.
  3. Helgadottir H, et al. Front Oncol 2018;8:202.
  4. Bellmunt J, et al. Cancer Treat Rev 2017;54:58–67.