MALAT1 and lung cancer: The metastasis-associated lung adenocarcinoma transcript 1 (MALAT1) has been identified as a prognostic factor in patients with lung cancer (151), and its overexpression is related to poor clinical outcome, chemoresistance, and progression in many cancer types, including kidney (152, 153), pancreatic (154), prostate (155, 156), esophageal (157, 158), breast (159, 160), gastric (161), ovarian (162), and colorectal (163, 164).