In ovarian,216 prostate and pancreatic cancers, NAPRT has been found upregulated just like NAMPT gene.193,217 While in glioblastoma, neuroblastomas,218 chondrosarcoma,219 gastric cancer,220 leukemia193, and colorectal cancer,221 NAPRT has been found downregulated. This evidence concerns the gene NAPRT and gastric cancer.