Analysis of genomics data from The Cancer Genome Atlas (TCGA) project freely available from web-portal UALCAN [83] revealed pattern of AQP3 in normal (median 31.64 transcripts per million (TPM) (1.448–87.454 TPM)) vs. different subclasses of breast cancer (luminal–16.183 TPM (0.363–134.985 TPM), HER2-positive-36.481 TPM (0.521–329.342 TPM), TNBC-13.484 TPM (0.713–103.167 TPM) (Figure 2). This evidence concerns the gene ERBB2 and breast cancer.