Navigating the Maze: A Mini-Guide for the Management and Therapy of Metabolic Dysfunction-associated Steatotic Liver Disease

Abstract

Metabolic Dysfunction-Associated Steatotic Liver Disease (MASLD), formerly known as Nonalcoholic Fatty Liver Disease (NAFLD), poses a significant global health challenge with a prevalence of 30% worldwide. Alarming projections anticipate a substantial increase in MASLD cases, highlighting the urgent need for preparedness and effective policies. The pathophysiology of MASLD involves a complex interplay of metabolic, genetic and lifestyle factors. Although liver biopsy remains the gold standard for the diagnosis of MASLD, non-invasive methods such as abdominal ultrasound, transient elastography with controlled attenuation parameter, shear wave elastography, and non-invasive serum fibrosis scores have been developed and validated. Effective risk stratification in primary care with non-invasive fibrosis scores, such as fibrosis 4 (FIB-4) index and NAFLD fibrosis score (NFS), optimizes healthcare resource utilization, ensuring appropriate referrals for high-risk patients while minimizing unnecessary referrals. Lifestyle intervention, including diet and physical activity, remains the primary therapy for MASLD. Notably, with the FDA approval of resmetirom, the first authorized medication for fibrotic metabolic dysfunction-associated steatohepatitis (MASH), and several antifibrotic agents under investigation, the therapeutic landscape for MASLD is rapidly evolving. Despite its increasing prevalence, morbidity and mortality, MASLD is frequently underdiagnosed in primary care. In this review, we aim to provide primary care physicians an update on the diagnosis, management and treatment of MASLD.