ERBB2 and neoplasm: Lee et al. [25] reported that in subgroup analysis based on HR status, histological grade 3 is an independent predictor of high TIL levels in the HR-positive/HER2-positive group, whereas high tumor cellularity, peritumoral edema, and low ADC are independent predictors of high TIL levels in the HR-negative/HER2-positive group.