QKI and non-small cell lung carcinoma: To explore the biological functions of QKI‐5 in NSCLC, we transfected QKI‐5 overexpressing vector, LV‐QKI‐5 into the H460 cells or QKI‐5 knockdown vector, LV‐sh‐QKI‐5 into the H1299 cells.