ERBB2 and neoplasm: We defined TILs using CD8 positivity only and found slightly higher levels in the HER2‐positive cohort C patients, but essentially low to intermediate numbers of TILs in the study population overall (mean 14.9%) The review by Pellegrino et al suggests that identifying TILs by FOXP3 positivity and CTLA‐4 expression in both tumor cells and TILs was associated with worse disease‐free and overall survival.