GLP-1R Agonists and Their Therapeutic Potential in Inflammatory Bowel Disease and Other Immune-Mediated Inflammatory Diseases, a Systematic Review of the Literature

Abstract

Background/Objectives: GLP-1 receptor agonists (GLP-1RAs) have revolutionized weight loss and shown anti-inflammatory actions in several experimental models of colitis. There has been a wealth of recent data suggesting that GLP-1RA treatment may modify disease outcomes in inflammatory bowel disease (IBD). The aim of this systematic review is to determine if GLP-1RAs can act as a sole or adjunctive agent to induce steroid-free clinical remission in IBD patients. Methods: The PubMed/Medline, Cochrane Clinical Trial, and EMBASE databases were interrogated with a pre-defined search strategy and eligibility criteria to examine the evidence regarding GLP-1RAs' use in IBD and non-IBD immune-mediated inflammatory disease (IMID) patients. Results: While there is a wealth of pre-clinical animal data suggesting that GLP-1RAs can ameliorate experimental colitis, there is a lack of prospective clinical studies on treating active IBD with GLP-1RAs to specifically induce steroid-free clinical remission. Surrogate data on better IBD composite outcomes have been reported with the use of GLP-1RAs, including a lower risk of surgery, hospitalization, corticosteroid use, and/or the initiation of advance therapies. Data from non-IBD IMID patients are only available for the effect of these agonists on psoriatic plaques, with positive signals. Conclusions: The current evidence for the role of GLP-1RAs as a potential anti-inflammatory therapy in IBD is limited, but provides the impetus for much-needed prospective studies and RCTs that include patients with active IBD.

Keywords: Crohn’s disease; glucan-like peptide-1 receptor agonist; inflammatory bowel disease; obesity; ulcerative colitis.

Figure 1

PRISMA flow chart of included and excluded studies.