MALAT1 and cancer: Q-PCR was performed to detect the levels of MALAT1 in the tissues, and the results indicated that the MALAT1 levels was significantly higher in GC/DM cancer tissues (C-DM) than that of the adjacent normal tissues (N-DM) (P< 0.0001) and the GC/NDM cancer tissues (C-NDM) (P=0.0134), while there is nearly no difference between the GC/NDM tissues and the adjacent normal tissues (Figure 1A, 1B, Supplementary Figure S1).