ERBB2 and breast cancer: In HR+HER2- breast cancer, tumors with high TILs were more commonly observed in low-E-mean and -E-max groups: 26.5% of the low-E-mean group vs. 14.7% of the high-E-mean group (p = 0.024) and 26.0% of the low-E-max group vs. 15.2% of the high-E-max group (p = 0.039).