fig1
Figure 1. Flow diagram and study design. (A) Flow diagram; (B) Study design. HER2: Human epidermal growth factor receptor 2; SJTU-BCDC: Shanghai Jiao Tong University Breast Cancer Database; TCGA: The Cancer Genome Atlas; DNA: deoxyribonucleic acid; WES: whole-exome sequencing; TILs: tumor-infiltrating lymphocytes; H&E stain: hematoxylin and eosin stain; ALN: axillary lymph node; ER: estrogen receptor; PR: progesterone receptor.