Since TNM stage, distal metastasis and differentiation are pivotal factors for evaluating the prognosis of gastric cancer, these seven molecules hsa_circ_0000190, hsa_circ_0001649, hsa_circ_0000745, and circ-SFMBT2 show a potential value as diagnostic biomarkers, circERBB2 could serve as a prognostic biomarker, and hsa_circ_002059 and hsa_circ_0000181 have promising performances in both diagnosis and prognosis of gastric cancer. This evidence concerns the gene SFMBT2 and gastric cancer.