Lower risks of sodium glucose cotransporter 2 (SGLT2) inhibitors compared to dipeptidyl peptidase-4 (DPP4) inhibitors for new-onset non-alcoholic fatty liver disease and hepatocellular carcinoma in type 2 diabetes mellitus: A population-based study

Abstract

Background: The association between sodium glucose cotransporter 2 inhibitors (SGLT2I) versus dipeptidyl peptidase-4 inhibitors (DPP4I) and the risks of non-alcoholic fatty liver disease (NAFLD) and hepatocellular carcinoma (HCC) are currently unknown. Methods: This was a retrospective population-based cohort study including type-2 diabetes mellitus (T2DM) patients treated with either SGLT2I or DPP4I between 1st January 2015 and 31st December 2019 in Hong Kong. Patients with concurrent DPP4I and SGLT2I usage were excluded. The primary outcomes were NAFLD and HCC. The secondary outcomes included cancer-related mortality and all-cause mortality. Propensity score matching (1:1 ratio) was performed using the nearest neighbour search. Univariable and multivariable Cox regression was applied to identify significant predictors. Competing risks models and multiple approaches using the propensity score were performed. Results: This cohort included 62699 patients with T2DM, amongst which 22154 patients were on SGLT2I and 40545 patients were on DPP4I. After matching (44308 patients), 1090 patients developed new-onset NAFLD (Incidence: 4.6; 95% Confidence interval [CI]: 4.3-4.9) and 187 patients developed HCC (Incidence: 0.8; 95% CI: 0.7-0.9). Overall, SGLT2I was associated with lower risks of NAFLD (Hazard ratio [HR]: 0.39; 95% CI: 0.34-0.46), and HCC (HR: 0.46; 95% CI: 0.29-0.72) compared to DPP4I after adjustments. SGLT2I was also associated with lower risks of cancer-related mortality (HR: 0.29; 95% CI: 0.23-0.37) and all-cause mortality (HR: 0.28; 95% CI: 0.25-0.31). However, amongst patients with hepatitis B virus infection, SGLT2I was associated with higher risks of HCC (HR: 3.28; 95% CI: 1.21-8.90). The results were consistent in competing risk models and different matching approaches. Conclusion: SGLT2I was associated with lower risks of NAFLD, and HCC compared to DPP4I after propensity scores matching and adjustments.

Competing Interest Statement

The authors have declared no competing interest.

Funding Statement

ECD is funded in part through the Cancer Center Support Grant from the National Cancer Institute (P30 CA008748). The other authors received no funding for the research, authorship, and/or publication of this article.

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The Joint Chinese University of Hong Kong New Territories East Cluster Clinical Research Ethics Committee gave ethical approval for this work

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Data Availability

An anonymised version without identifiable or personal information is available from the corresponding authors upon reasonable request for research purposes.

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