We next explored the function of miR-139-3p in GC, as shown in Fig. 6I and Fig. 6J, the proliferative capacity of cells treated si-circ-PTPDC1 + miR-139-3p or miR-139-3p in GC cells was significantly suppressed in comparison to those treated with si-NC. This evidence concerns the gene PTPDC1 and gastric cancer.