Human urothelial carcinoma associated 1 (UCA1) refers to cancer-regulated drug resistance gene that involves in the development of different malignant tumors, such as gastric cancer, lung cancer, rectal cancer and so on.[18–21] Derived from the family of human endogenous retroviruses, LncRNA UCA1 is LncRNA molecule. This evidence concerns the gene UCA1 and gastric cancer.