KLF4 and non-small cell lung carcinoma: Figure 9 shows that the overexpression of KLF4 delayed the invasion of A549, H1299, H226 and H1650 cell lines (106.9 ± 2.752 vs. 26.40 ± 2.423, 94.92 ± 2.534 vs. 21.57 ± 1.030, 4.526 ± 0.504 vs. 1.250 ± 0.250, and 39.50 ± 2.296 vs. 10.76 ± 1.123, respectively). Taken together, our data illustrated that KLF4 attenuated the migration and invasion of NSCLC cells in vitro.