On univariate analysis, post-menopause, older age (≥ 50 years), low PR (i.e. < 10% and < 20%) and high Ki67 expression, poorly differentiated grade and size ≥ 2cm as well as the sub-classification of luminal B-like BC significantly correlated with a worse BCSS (Table 3). The gene discussed is MKI67; the disease is breast cancer.