Real-World Clinical Effectiveness of Glucagon-Like Peptide-1 Receptor Agonist on Mild-to-Moderate Diabetic Kidney Disease in Patients with Type 2 Diabetes: A Retrospective, Single-Arm Clinical Trial.

ABSTRACT

Background: Cardiovascular outcome trials indicate renal benefits of glucagon-like peptide-1 receptor agonists (GLP-1RAs); however, real-world efficacy and safety studies in Diabetic kidney disease (DKD) are scarce. Methods: This retrospective, single-arm real-world trial involved adults with DKD treated with GLP-1RA for at least 6 months. The primary endpoint was hemoglobin A1c (HbA1c) levels after 6 months. Results: This study included a total of 364 patients with DKD, 153 (42.0%) of whom were female. The median disease duration was 8.0 years, and the mean values of age, HbA1c level, body mass index, and the urinary albumin-to-creatinine ratio (UACR) were 52.1 years, 8.6%, 27.8 kg/m2, and 88.0 mg/g, respectively. Additionally, 73.6% and 26.4% of patients had mild and moderate DKD, respectively. Following 6 months of GLP-1RA treatment, the mean HbA1c level and UACR declined by 1.77% and 40.3%, respectively (both p < 0.001). Compared to their baseline values, patients exhibited significant improvements in 24-h urinary protein, estimated glomerular filtration rate (eGFR), fasting blood glucose, body weight, systolic blood pressure (SBP), diastolic blood pressure (DBP), total cholesterol, triglycerides, high-density lipoprotein cholesterol, and low-density lipoprotein cholesterol (all p < 0.001). Patients with a disease duration of <10 years had more pronounced changes in the HbA1c level, UACR, and eGFR (all p < 0.001) than those with a disease duration of ≥10 years. Changes in SBP and DBP were more pronounced in patients also taking angiotensin-converting enzyme inhibitors/angiotensin II receptor blockers (ACEis/ARBs) than in those not taking ACEis/ARBs, whereas the changes in UACR and eGFR did not significantly differ. Conclusion: Six-month GLP-1RA treatment improves glucose, blood pressure, lipids, and body weight in patients with mild-to-moderate DKD while slowing down kidney disease progression. It independently reduces proteinuria beyond ACEi/ARB impact, with early use yielding faster outcomes, supporting evidence-based practice.