GIT1 and non-small cell lung carcinoma: To reveal the role of GIT1 in NSCLC, we silenced GIT1 with specific siRNA in NSCLC cells, and found that GIT1 knockdown inhibited the cell growth and arrested cell cycle at G0/G1, just like the effect of miR‐138 overexpression on NSCLC cells, whereas ectopic expression of GIT1 partly rescued the suppressive effect of miR‐138.