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. 2021 Jan;55(1):65-79.
doi: 10.1177/1060028020935105. Epub 2020 Jun 22.

A Systematic Review of Newer Antidiabetic Agents in the Treatment of Nonalcoholic Fatty Liver Disease

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A Systematic Review of Newer Antidiabetic Agents in the Treatment of Nonalcoholic Fatty Liver Disease

John A Dougherty et al. Ann Pharmacother. 2021 Jan.

Abstract

Objective: To evaluate glucagon-like peptide 1 receptor agonists (GLP-1 RAs), dipeptidyl-peptidase IV (DPP-4) inhibitors, and sodium-glucose cotransporter 2 (SGLT) inhibitors to treat nondiabetic and type 2 diabetes mellitus (T2DM) nonalcoholic fatty liver disease (NAFLD) as it relates to improvement in hepatosteatosis (HS) or steatohepatitis (SH).

Data sources: MEDLINE and CINAHL were searched from inception through May 1, 2020. Search terms included nonalcoholic steatohepatitis, nonalcoholic fatty liver disease, fatty liver, dipeptidyl-peptidase IV inhibitors, glucagon-like peptide-1 receptor agonists, and sodium-glucose transporter 2 inhibitors.

Study selection and data extraction: Full-text observational and randomized controlled studies in English were included. Patients diagnosed with NAFLD, treated with GLP-1 RAs, DPP-4 inhibitors, and SGLT2 inhibitors, with measures to evaluate HS or SH were evaluated.

Data synthesis: Eight GLP-1 RA trials were reviewed; 7 GLP-1 RA trials showed improvement in HS. Two studies demonstrated improvement in liver histology in patients with SH. Seven SGLT2 inhibitor studies were reviewed; 6 studies demonstrated improvements in NAFLD. Five studies showed improvements in HS, whereas 1 displayed improvement in liver histology in NASH. Six studies that included DPP-4 inhibitors were evaluated, and only 2 demonstrated improvement in NASH.

Relevance to patient care and clinical practice: Based on evidence reviewed, GLP-1 RAs and SGLT2 inhibitors decreased HS and SH in NAFLD patients, whereas DPP-4 inhibitor therapy was not effective for patients with HS.

Conclusions: Based on study data utilizing imaging studies and biopsy results, GLP-1 RAs or SGLT2 inhibitors can benefit NAFLD T2DM patients. Clinical trials with larger patient populations may augment these results.

Keywords: DPP-4 inhibitor; GLP-1 receptor agonist; NAFL; NAFLD; NASH; SGLT-2 inhibitor; diabetes; evidence-based medicine; fatty liver.

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