MTA2 and gastric cancer: In the present study, we identified a previously unknown circRNA named circMTA2 (hsa_circ_0022462) derived from the MTA2 gene, expanding our knowledge of the MTA2 gene’s transcriptional landscape and uncovering the functional role of circMTA2 in promoting proliferation, invasion, and metastasis of GC cells both in vitro and in vivo.