In a study by Dawson et al., the hazard ratio for Bcl-2 positive vs. negative expression was reportedly larger in ER-negative, PR-negative, and triple-negative than ER-positive, PR-positive, and non-triple-negative cancers, respectively, which is in line with our present study; however, adjuvant therapy was not considered in each comparison [28]. This evidence concerns the gene PGR and cancer.