A negative association with the EMT-inducer TGFβ1 and the strong positive correlation with CDH1 was indicative of epithelial-specific expression of LINC00261. To verify this hypothesis, we treated two lung cancer cell lines, which displayed high endogenous LINC00261 expression, with TGFβ1 to induce EMT and quantified LINC00261 expression. The gene discussed is TGFB1; the disease is lung carcinoma.