DPP4 and metabolic dysfunction-associated steatotic liver disease: Hepatic DPP4 mRNA expression was detected in 85% of study participants; no different hepatic DPP4 mRNA expression was found between patients with or without NAFLD (0.052 ± 0.79 vs. 0.033 ± 0.032 arbitrary units (AU), p = 0.35; Mann–Whitney test applied).