RAET1K and lung adenocarcinoma: According to the TCGA database, lncRNA RAET1K expression was upregulated in lung adenocarcinoma; Sui et al.50 reported a similar result that lncRNA RAET1K was upregulated in lung adenocarcinoma tumor tissues and that lncRNA RAET1K exhibited a significant prognostic value for lung adenocarcinoma.