Although there was no difference between the breast cancer (BRCA, n = 1093) and normal breast tissue (n = 112), the RSRC2 expression was lower in the basal (n = 190) and Her2 (n = 82) subtypes than in the luminal A and B (n = 564 and n = 217) and normal tissue (Figure 1A, blue box indicated). This evidence concerns the gene ERBB2 and breast cancer.