We constructed WTAP siRNA (si‐WTAP) and transfected it into NSCLC cells and found that knockdown of WTAP not only reduced the mRNA and protein levels of WTAP (Figure 3C) but also decreased the mRNA levels of circSMOC1 in A549 and 95D cells (Figure 3D). This evidence concerns the gene WTAP and non-small cell lung carcinoma.