MALAT1 and non-small cell lung carcinoma: The potential mechanism underlying the roles of MALAT-1 in cell proliferation in NSCLC cells was further explored, and it was revealed that MALAT-1 knockdown could induce cell apoptosis and decrease the expression of cyclinD1, cyclinD2, and CDK, which contributed to the extension of G1 phase and the shortening of S phase.