NASH with Type 2 Diabetes: When Lifestyle Intervention Has Not Achieved Its Targets
Nonalcoholic steatohepatitis (NASH) — an active, inflammatory form of MASLD — occurring in patients with concurrent type 2 diabetes mellitus. This protocol addresses the clinical decision point reached when first-line lifestyle management has failed to achieve the weight reduction required to improve NASH or reduce hepatic fibrosis.
The initial approach was a liver-protective lifestyle intervention: a caloric-deficit diet (Mediterranean diet pattern) in overweight or obese patients, regular moderate physical activity of at least 150 minutes per week, increased coffee consumption, and complete alcohol abstinence in patients with clinically significant hepatic fibrosis.
The required thresholds were not reached: weight loss of 3–5% is needed to improve hepatic steatosis, while weight loss greater than 10% is generally required to improve NASH and fibrosis. Failure to achieve these targets is the trigger for the pharmacological protocol below.
Clinical success is defined as resolution of NASH together with a reduction in ALT of at least 17 IU/L — a threshold associated with histological improvement.
References
DOI: 10.1097/HEP.0000000000000323
- Pioglitazone improves NASH and can be considered for patients with NASH in the context of patients with T2DM.
- In patients with NASH with or without pre-DM or T2DM, treatment with pioglitazone improves histology and insulin resistance.
- Semaglutide can be considered for its approved indications (T2DM/obesity) in patients with NASH, as it confers a cardiovascular benefit and improves NASH.
- A decrease of ≥ 17 IU/L in ALT was associated with a higher odds of histological response in the FLINT trial of obeticholic acid.
- ALT reduction of ≥ 17 U/L is associated with histological improvement; however, thresholds may differ for type of histological response (eg, NASH resolution or fibrosis improvement) and may be mechanism of action specific.