Bergamaschi et al. showed copy number alterations (CNAs) in basal-like breast cancer subtype tumors at 14q23.1, along with other CNAs.35 Therefore, our bioinformatic data showing PPM1A deletion in the basal subtype are in agreement with the CNA analysis by Bergamaschi.35 Several other publically available breast cancer datasets, accessed through Oncomine, also show similarly reduced expression of PPM1A in ER-negative and TNBC tumors compared to ER-positive tumors. This evidence concerns the gene PPM1A and breast cancer.