Treatment of MAFLD with Comorbidities
All patients with MAFLD and metabolic comorbidities require lifestyle modification targeting ≥10% sustained weight loss combined with aggressive management of type 2 diabetes, hypertension, and dyslipidemia, with GLP-1 receptor agonists (semaglutide, tirzepatide) as preferred pharmacotherapy for patients with coexisting diabetes or obesity, and resmetirom for those with non-cirrhotic disease and significant fibrosis (stage ≥2). 1, 2
Lifestyle Modification: The Foundation
Weight Loss Targets
- Target ≥10% sustained weight reduction to achieve fibrosis improvement, which demonstrates the strongest evidence for reversing fibrosis in advanced disease 1
- Weight loss of 5-7% reduces steatosis and improves inflammation 3
- Weight loss >10% improves fibrosis in 45% of patients 3
- Implement a 500-1000 kcal/day deficit to achieve gradual weight loss (maximum 1 kg/week) 3, 1
Dietary Approach
- Adopt a Mediterranean dietary pattern including vegetables, fruits, unsweetened high-fiber cereals, nuts, fish or white meat, and olive oil 1, 2
- Eliminate all sugar-sweetened beverages completely 1, 2
- Minimize ultra-processed foods rich in sugars and saturated fat 1, 2
Physical Activity
- Prescribe ≥150 minutes/week of moderate-intensity OR 75 minutes/week of vigorous-intensity physical activity 1, 2, 4
- Exercise reduces steatosis even when weight loss goals are not met 4
Pharmacological Management of Comorbidities
Type 2 Diabetes Management
- Prefer GLP-1 receptor agonists (semaglutide, liraglutide, tirzepatide) as first-line therapy for patients with coexisting type 2 diabetes, as they improve cardiometabolic outcomes and are safe in MASH, including compensated cirrhosis 1, 2
- Consider SGLT2 inhibitors as alternative or combination therapy 1
- Metformin decreases HCC incidence, while sulfonylurea and insulin increase HCC risk by 1.6 and 2.6 times respectively 3
- Avoid sulfonylureas and insulin when possible due to increased HCC risk 3
Dyslipidemia Management
- Statins are safe and should be used for dyslipidemia in all patients with MAFLD, reducing HCC risk by 37% 1, 3
- Do not withhold statins due to concerns about liver disease 1
Hypertension Management
- Aggressively treat hypertension as controlling metabolic comorbidities impacts hepatic disease course 4
- Treatment of comorbidities such as hypertension should be applied to all MAFLD patients regardless of inflammation or fibrosis degree 3
MASH-Targeted Pharmacotherapy
Resmetirom (First-Line for Significant Fibrosis)
- Consider resmetirom for non-cirrhotic patients with significant liver fibrosis (stage ≥2) if approved locally, as it demonstrated histological efficacy in phase III trials with acceptable safety 1, 2, 4
- This is the first FDA-approved medication specifically for MASH 4
GLP-1 Receptor Agonists (Dual Benefit)
- Semaglutide and tirzepatide provide dual benefits of significant weight loss and direct improvements in hepatic steatosis and inflammation 4
- These agents are particularly valuable when patients have failed weight loss attempts, as they can improve liver injury even without achieving weight loss goals 4
Pioglitazone (Alternative Option)
- Pioglitazone improves insulin sensitivity and enhances cellular responsiveness to insulin in insulin-resistant patients 5
- Consider for patients with type 2 diabetes, though monitor for edema (reported in 4.8% monotherapy, 15.3% with insulin combination) 5
- Common pitfall: Pioglitazone increases edema risk, particularly when combined with insulin (15.3% vs 7.0% insulin alone), requiring careful monitoring 5
Risk Stratification and Monitoring
Initial Assessment
- Use FIB-4 score, liver stiffness measurement (LSM), or liver biopsy for risk stratification 1
- High-risk patients have FIB-4 >2.67, LSM >12.0 kPa, or significant fibrosis on biopsy 1
Follow-Up Monitoring
- Follow up with liver enzyme tests (particularly ALT) every 3-6 months to assess response 4
- ALT reduction of >17 U/L has been associated with resolution of steatohepatitis 4
- Non-invasive tests may be repeatedly used to assess fibrosis progression but provide limited information about treatment response 1, 2
HCC Surveillance
- Patients with advanced fibrosis (F3) or cirrhosis require HCC surveillance with imaging every 6 months 1
- HCC surveillance is mandatory for all patients with liver cirrhosis associated with MAFLD 3
Multidisciplinary Care Approach
Essential Team Components
- A multidisciplinary approach is mandatory to ensure all components are appropriately targeted to improve both liver-related and extrahepatic outcomes 1, 2
- Include hepatology/gastroenterology, endocrinology, cardiology, nutrition/dietetics, and behavioral therapy 2
- This approach is essential given the bidirectional connections between MAFLD and cardiometabolic disease 1
Special Considerations
Alcohol Consumption
- Alcohol should be discouraged or avoided completely in advanced fibrosis or cirrhosis 1
- Patients with liver cirrhosis associated with MAFLD should abstain from alcohol as it increases HCC risk and liver-related mortality 3
Smoking Cessation
- Smoking cessation is recommended to reduce HCC development 3
Coffee Consumption
- Coffee consumption has been associated with improvements in liver damage and reduced liver-related clinical outcomes in observational studies 1
Compensated Cirrhosis
- Target moderate weight reduction (3-5%) plus high-protein intake and physical activity for patients with compensated cirrhosis and obesity 1
Treatment Algorithm Priority
Initiate lifestyle modification immediately for all patients: ≥10% weight loss target, Mediterranean diet, ≥150 min/week exercise 1, 2
Optimize comorbidity management: GLP-1 agonists or SGLT2 inhibitors for diabetes, statins for dyslipidemia, aggressive hypertension control 1, 4
Add MASH-targeted therapy for patients with significant fibrosis (≥F2): resmetirom as first-line if non-cirrhotic 1, 2, 4
Implement HCC surveillance for advanced fibrosis (F3) or cirrhosis: imaging every 6 months 1, 3
Monitor response with ALT every 3-6 months and non-invasive fibrosis assessment annually 4, 1