Within non-luminal subgroups, G-CSFhigh expression was significantly associated with better BCSS in HER2 subtype (n = 196); triple-negative subgroup (n = 469) and basal (n = 274) subgroups of non-luminal breast cancers did not generate hazard ratios that remained significant in multivariable analysis (data not shown). This evidence concerns the gene ERBB2 and breast carcinoma.