While less well-defined, increased expression of insulin-like growth factor mRNA binding protein 3 (IMP3) [162], aldehyde dehydrogenase 1 (ALDH1) [163,164], aquaporin 1 (AQP1) [165], basal/myoepithelial markers belonging to the S100 family of proteins (A2, A8 and A9) [80,83,86,166,167], organic anion transporting polypeptide 2 (OATP2) [10], phosphohistone H3 [168] and the multidrug-resistance pump P-glycoprotein [169] have each been associated with basal-like and/or triple-negative breast cancers. This evidence concerns the gene AQP1 and triple-negative breast carcinoma.