This is in line with studies from a Canadian group that investigated the concordance among pathologists with the use of several clones, also in a cohort of HNSCCs, and that showed a high level of agreement for the evaluation of PD‐L1, even with separate evaluation of tumour and immune cells, highlighting how the SP263 clone achieves the best performance in terms of interobserver reproducibility.25, 26, 27. Here, CD274 is linked to neoplasm.