We also examined their protein expression in the Human Protein Atlas ([53], proteinatlas.org), and all three had low or no expression in stromal cells from normal ovarian tissue (n = 3), but UGDH and NAMPT expression was significantly increased in ovarian cystadenocarcinoma tissues of mucinous, endometrioid and serous histotypes (n = 12) (Fig. 1D). This evidence concerns the gene NAMPT and ovarian cystadenocarcinoma.