MALAT1 and cancer: An expanding body of evidence points to lncRNAs as mediators of tumorigenesis in multiple types of cancer, and lncRNAs may represent a new class of targets in cancer therapy5 The lncRNA MALAT1 (metastasis-associated lung adenocarcinoma transcript 1) is highly expressed in non small-cell lung cancer cell lines and contributes to tumor invasion and metastasis6.