UCA1 and gastric cancer: Upregulation of UCA1 has been reported to play central roles in a variety of biological processes, including the proliferation and development of various tumors.27, 28, 29 A previous study demonstrated that UCA1 was highly expressed in GC and served as an oncogene in promoting cell proliferation in GC, whereas this particular lncRNA was found to be positively correlated with TNM staging in GC.30