Although PTK7 did not influence EMT, we found that reconstitution of PTK7 expression restored the migratory and invasive capabilities of CL1‐5 and H1299 cells overexpressing miR‐503 (Figure 4E,F and Figure S5), indicating that PTK7 was the direct target gene that mediates the function of miR‐503 in controlling cancer invasiveness. The gene discussed is PTK7; the disease is cancer.