Background/Objective: Evidence of cardiovascular and renal outcomes has already been shown for SGLT2 inhibitors (SGLT2i) and GLP1 receptor agonists (GLP1Ras); therefore, combination therapy with these drugs is of clinical interest. This study aimed to evaluate the effect of the preceding drug for patients with the combination treatment of SGLT2i and GLP1Ra on renal outcomes.

Methods: We retrospectively extracted data of patients with type 2 diabetes mellitus who had received both SGLT2i and GLP1Ra treatment for at least 1-year at 18 medical facilities in Japan. Finally, 341 patients in the GLP1Ra-preceding group and 319 in the SGLT2i-preceding group were analyzed. The renal composite outcome was progression of the albuminuria stage, ≥30% decrease in eGFR, or both. The multiple imputation method for missing values and an inverse probability weighting method using the propensity score were used for the comparison of outcome.

Results: The median observation period and the incidence of the renal composite outcome in the SGLT2i-preceding group and the GLP1Ra-preceding group was 55.1months, 26.9% and 58.7months, 25.6%, respectively, with an odds ratio (OR) [95% confidence interval] of 1.50 [0.89, 2.53] (p=0.13). The ORs for the ≥30% decrease in eGFR and the progression of albuminuria stage were 0.96 [0.47, 2.00] (p=0.93) and 1.76 [0.97, 3.69] (p=0.06), respectively. Compared to the GLP1Ra-preceding group, the annual change in eGFR and change in the logarithmic value of urine albumin-to-creatinine ratio (LnACR) was 0.27mL/min/1.73 m2/year [-0.60, 1.14], and 0.18 [-0.10, 0.43] respectively. LnACR at baseline, pioglitazone use, and baseline mean arterial blood pressure were independent factors for renal composite outcome with ORs [95% CI] of 1.15 [1.01, 1.31], 0.47 [0.23, 0.96], and 1.03 [1.01, 1.05], respectively.

Conclusion: In combination therapy with SGLT2i and GLP1Ra, the difference in the preceding drug did not affect the renal composite outcome.


K.Kobayashi: None. M.Toyoda: None.

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