GSK3B and neoplasm: Cell proliferation‐related genes were significantly higher in peripheral tumour in LumB, including vascular endothelial growth factor receptor 2 (VEGFR2) (t = −3.16, p = .007), MYC proto‐oncogene (MYC) (t = −2.25, p = .04), glycogen synthase kinase 3 beta (GSK3B) (t = −2.6384, p = .01), fibroblast growth factor receptor 4 (FGFR4) (t = −2.44, p = .02) and FOS proto‐oncogene (FOS) (t = −2.51, p = .02).