DPP4 and metabolic dysfunction-associated steatotic liver disease: Eighty-nine individuals (71%) had US-detected fatty liver, both plasma DPP4 activity and DPP4 concentration were significantly higher in NAFLD in comparison to no-NAFLD individuals (plasma DPP4 activity = NAFLD: 222,822 ± 90,669.3 nmol/min/ml vs. no-NAFLD: 173,059.5 ± 91,040 nmol/min/ml, p = 0.006; plasma DPP4 concentration = NAFLD: 533.6 ± 161.9 ng/ml vs. no-NAFLD: 453.7 ± 125.8 ng/ml, p = 0.037).