We considered mRNA expression data to be valid for comparison, as The Cancer Genome Atlas data (cBio, Provisional breast cancer data set, obtained February 2018) shows that P4HA2 mRNA expression by RNAseq and protein expression by mass spectrometry in 70 IBC were significantly positively correlated (p < 0.0001, Spearman r = 0.48). This evidence concerns the gene P4HA2 and breast cancer.