NAMPT and cancer: In patients with different types of cancer, a meta-analysis revealed visfatin concentrations ranging from 0.14 to 171.8 ng/mL in control subjects, and from 0.35 to 222.2 ng/mL in cancer patients, and despite differences in plasma visfatin levels among the different studies analyzed, higher visfatin levels in cancer patients than controls were found, indicating an association between high visfatin and an increased risk of various cancer types [8].