In addition, we found that the expression levels of SLC30A1, SLC30A5, SLC30A6 and SLC30A7 were significantly elevated, while the expression level of SLC30A4 was significantly decreased in gastric adenocarcinoma tissues compared with both normal gastric tissues and matched normal gastric tissues (Fig. 1b). This evidence concerns the gene SLC30A7 and gastric adenocarcinoma.