MALAT1 and colorectal cancer: The evidence for lncRNA involvement in tumorigenesis includes findings that the lncRNA MALAT1 (metastasis-associated lung adenocarcinoma transcript 1) promotes lung cancer metastasis [5]; participates in regulation of cell proliferation, migration, and invasion in colorectal cancer metastasis [6,7]; and is associated with an increased risk of liver tumor recurrence [8,9], and breast cancer metastasis [10].