Moreover, after analyzing a cohort of 94 NSCLC tissue specimens, WTIP levels were observed to be strongly positively correlated with FOXO1 expression and negatively correlated with Ki‐67 expression (Fig. 6G and Fig. S4C), which further supported the notion that WTIP inhibits cell proliferation and the cell cycle via FOXO1 in NSCLC clinical specimens. Here, FOXO1 is linked to non-small cell lung carcinoma.