BCL2 and breast cancer: Negative Bcl-2 expression was associated with improved chemo-response in breast cancer patients who received anthracycline-based therapy (total OR: RR = 1.28, 95% CI = 1.01–1.43, p = 0.034, Figure 4; pathological CR: RR = 1.76, 95% CI = 1.24–2.51, p = 0.002).