TGFB1 and lung cancer: 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.