Evaluating the prevalence and severity of metabolic dysfunction-associated steatotic liver disease in patients with type 2 diabetes mellitus in primary care.

Background and aims: The prevalence of metabolic dysfunction-associated steatotic liver disease (MASLD) has increased during the epidemic of obesity. Type 2 diabetes mellitus (T2DM) is associated with progressive MASLD. Therefore, many guidelines recommend screening for MASLD in patients with T2DM. Most studies in patients with MASLD have been conducted in specialist care. We investigated the prevalence and severity of MASLD in patients with T2DM from primary care.

Methods: Patients with T2DM were prospectively included from primary care facilities to undergo transient elastography with controlled attenuation parameter and whole-body magnetic resonance imaging (MRI) to assess liver fat, cardiac function, muscle composition, and distribution of body fat.

Results: Among 308 participants, 59% had MASLD, 7% had suspected advanced fibrosis (transient elastography ≥ 10 kPa), and 1.9% had cirrhosis. The mean age was 63.9 ± 8.1 years; 37% were female, with no differences between the MASLD and the non-MASLD groups. Participants with MASLD had greater body mass index (31.1 ± 4.4 vs. 27.4 ± 4.1 kg/m², p < 0.001) and a higher prevalence of obesity (60% vs. 21%, p < 0.001). Obesity increased the risk of fibrotic MASLD eightfold, as confirmed by multivariable analysis. Participants with MASLD also had increased visceral and abdominal subcutaneous adipose tissue and muscle fat infiltration. On cardiac MRI, participants with MASLD had a lower left ventricular (LV) stroke volume index, a lower LV end-diastolic volume index, and an increased LV concentricity.

Conclusions: In this cohort of primary care patients with T2DM, 59% had MASLD, and 7% had suspected advanced fibrosis. Obesity was a strong predictor of fibrotic MASLD. MASLD was associated with alterations to the left ventricle and increased deposition of ectopic fat.