BCL2 and cancer: Some studies have reported that Bcl-2 positivity of triple-negative breast cancer is associated with better cancer-specific survival and disease-free survival [20], while other studies showed that Bcl-2 positivity is associated with a worse prognosis in terms of overall survival [13–21], and finally some authors did not find any prognostic significance of Bcl-2 in triple-negative breast cancer [12].