A positive correlation between Circ-UBE2Q2 and STAT3 was found by qRT-PCR, and the knockdown of Circ-UBE2Q2 inhibited STAT3 expression in GC cells, while the suppression of GC cell proliferation and metastasis caused by the silence of Circ-UBE2Q2 could be reversed by the overexpression of STAT3 [63]. Here, STAT3 is linked to gastric cancer.