Univariate Cox analysis and LASSO Cox regression analysis were used to identify five lncRNAs (AC007405.3, TMEM220-AS1, AL031985.3, TMCC1-AS1, MIR210HG) with prognostic value in HCC, which have been linked to immune regulation and prognosis of gastric cancer, breast cancer, and liver cancer [33,34,35,36,37]. Here, TMCC1 is linked to gastric cancer.