In agreement with previous data reporting higher density of S2R in several lines of breast and pancreatic cancer cells than in the normal (immortalized) cells [26,27,28], pancreatic adenocarcinoma MP and breast adenocarcinoma MCF7 cells were selected because of the density of the TMEM97 and TSPO proteins. This evidence concerns the gene TMEM97 and pancreatic adenocarcinoma.