To evaluate the effects of CAT on autophagy, hepatic steatosis, and the underlying mechanisms, HepG2 cells were exposed to different concentrations (0.1, 1, or 10 μg/mL) of CAT for 24 h or treated with 10 μg/mL CAT for 6, 12, or 24 h. The gene discussed is CAT; the disease is Hepatic steatosis.