TGFB1 and non-small cell lung carcinoma: In the present study, we found that TGF‐β induced the expression of cytidine 5′‐triphosphate synthetase 1 (CTPS), a key enzyme for CTP biosynthesis in the pyrimidine metabolic pathway, which contributes to EMT progression, anti‐cancer drug resistance and cell migration in NSCLC.