Here, by screening GEO datasets and verifying them in our samples, we identified a circRNA originating from exons 3, 4, 5, 6, and 7 of FAM73A (circFAM73A), whose expression is relatively upregulated in GC, and then focused our investigation on the role and potential mechanism of circFAM73A in GC malignancy. Here, MIGA1 is linked to gastric cancer.