Multivariate Cox regression analysis indicated that the factors related to DFS and OS to be tumour size, Miller and Payne grade, pathological T stage, pathological TNM stage, core needle biopsy (ER status), post‐operative pathology IHC (molecular subtype, ER status, Ki‐67 status, TOP2A status), lymph vessel invasion, PLR, SII. The gene discussed is MKI67; the disease is neoplasm.