SMAD3 and lung carcinoma: Here, we found that Gsk3b, Notch2, Pik3cb, Myc, Cdkn1a, and Smad3 were increased in human lung cancer tissue and Cd‐transformed cells, while Pik3cb, Myc, Cdkn1a, and Smad3 were negatively correlated with circCIMT.