MAP4K4 and metabolic dysfunction-associated steatotic liver disease: We analyzed the correlation between MAP4K4 mRNA levels in human liver biopsies and the histological NAFLD severity score—NAS—in a cohort of 62 subjects (BMI: 22.7–45.6 kg/m2, body fat 19.5%–57.9%, liver fat 1.1%–50.0%).