Impact of Initiating a GLP1 Agonist and/or SGLT2 Inhibitor Therapy on De-Escalation and Discontinuation of Insulin and Diabetes Control When Managed by an Interprofessional Collaborative Team

Abstract

Background: An FQHC in Denver, Colorado developed and implemented an interprofessional care model to collaboratively manage type 2 diabetes mellitus (T2DM). Utilizing the 340B program, the team protocolized ADA Guidelines to promote the early adoption of first-line medications, glucagon-like peptide1 receptor agonists (GLP1 RAs) and sodium-glucose cotransporter 2 inhibitors (SGLT2is) to improve patient outcomes. Objectives: To assess the impact of interprofessional collaborative management versus standard care on early initiation of a SGLT2i and/or GLP1 RA as first-line therapies to enhance (1) deprescribing of insulin, (2) reducing overbasalization of insulin through insulin de-escalation, and (3) effectively lowering A1C levels in adult primary care patients with T2DM. Methods: This was a retrospective chart review of adult patients with T2DM who were initiated on a GLP1 RA and/or a SGLT2i. To determine the effects of initiating GLP1 RA and/or SGLT2i therapy on insulin usage and glycemic control, the total daily dose (TDD) of insulin before initiation was compared with the most recent TDD post-initiation to evaluate deprescribing. To determine the impact on overbasalization, pre-initiation and post-initiation insulin doses were evaluated. The effectiveness of GLP1 RA and/or SGLT2i in lowering A1C levels was determined by comparing the A1C prior to initiation with the A1C postinitiation. To evaluate the influence of interprofessional collaborative care on insulin deprescribing, overbasalization, and diabetes control, relevant measures were compared between patients receiving collaborative care versus standard care. Results: Of the 60 total patients treated with insulin, 46.6% were deprescribed insulin, with a majority in the interprofessional collaborative group (93.1%) compared to standard care (6.9%). A total of 78.3% of patients benefited from a reduction in A1C following the initiation of a GLP1 RA and/or SGLT2i. The greatest A1C reduction was −2.9% in the group receiving metformin in addition to a GLP1 RA and a SGLT2i. Patients who received interprofessional collaborative care had an average A1c reduction of −2.9% compared to—1.1% with standard care. Conclusion: Most patients initially overbasalized on insulin experienced a reduction in overbasalization after initiating GLP1 RA and/or SGLT2i. There was a notable A1C reduction, de-escalation, and deprescribing of insulin in patients receiving interprofessional collaborative care.