Next, to elucidate the underlying mechanism by which hsa_circ_0000751 modulates UQCRC2 expression in GC cells, we overexpressed hsa_circ_0000751 in MKN-45 and MGC-803 cells and quantified UQCRC2 transcript levels using qRT-PCR. Here, UQCRC2 is linked to gastric cancer.