Furthermore, we demonstrated that SIRT3 could play an anti‐Warburg effect by inhibiting the hypoxia‐inducible factor‐1α (HIF1α)/pyruvate dehydrogenase kinase 1 (PDK1)/pyruvate dehydrogenase (PDHA1) pathway in CCA cells. The gene discussed is PDHA1; the disease is cholangiocarcinoma.