Analyzing TCGA and CPTAC BC datasets, we observed that BAZ1B mRNA and protein are expressed at higher levels in luminal-like BC respect to normal mammary gland (Fig. 4C, D) and, more interestingly, higher BAZ1B expression was associated with worse overall and relapse-free survival in ER + BCs (Fig. 4E and F, respectively). This evidence concerns the gene BAZ1B and breast cancer.