Balaban et al. demonstrated, in a small cohort of individuals, that serum DPP4 activity was significantly higher in NASH patients than in normal-liver subjects and correlated with NASH severity and steatosis grade; however, no association was found between DPP4 activity and liver enzymes or metabolic parameters [16]. The gene discussed is DPP4; the disease is metabolic dysfunction-associated steatohepatitis.