Cited by 139Diabetes Treatment and ManagementDementia and Cognitive Impairment ResearchAlzheimer's disease research and treatments

Association of sodium-glucose cotransporter 2 inhibitors with time to dementia: a population-based cohort study.

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Wu, Che-Yuan, Iskander, Carina, Wang, Christa, Xiong, Lisa Y., Shah, Baiju R., Edwards, Jodi D., Kapral, Moira K., Herrmann, Nathan +9 more·2023·Diabetes Care

Published version of a preprint

Abstract

OBJECTIVE: Type 2 diabetes (T2D) increases dementia risk, but clear evidence to recommend interventions that can mitigate that risk remains lacking. This population-based retrospective cohort study aimed to determine whether new use of sodium–glucose cotransporter 2 (SGLT2) inhibitors compared with dipeptidyl peptidase 4 (DPP-4) inhibitors was associated with lower dementia risk. RESEARCH DESIGN AND METHODS: Ontario residents aged ≥66 years who were new users of an SGLT2 inhibitor or a DPP-4 inhibitor from 1 July 2016 to 31 March 2021 entered the cohort. Incident dementia was identified using a validated algorithm for Alzheimer’s disease and related dementias. Propensity score–weighted Cox proportional hazards models were used to obtain adjusted hazard ratios (aHR) and CIs for time to incident dementia. To address reverse causality and disease latency, the observation window started at 1-year lag time from cohort entry. The primary analysis followed intention-to-treat exposure definition, and a secondary as-treated analysis was performed. RESULTS: Among 106,903 individuals, SGLT2 inhibitors compared with DPP-4 inhibitors were associated with lower risk of dementia (14.2/1,000 person-years; aHR 0.80 [95% CI 0.71–0.89]) over a mean follow-up of 2.80 years from cohort entry. When stratified by different SGLT2 inhibitors, dapagliflozin exhibited the lowest risk (aHR 0.67 [95% CI 0.53–0.84]), followed by empagliflozin (aHR 0.78 [95% CI 0.69–0.89]), whereas canagliflozin showed no association (aHR 0.96 [95% CI 0.80–1.16]). The as-treated analysis observed a larger association (aHR 0.66 [95% CI 0.57–0.76]) than the intention-to-treat analysis. CONCLUSIONS: SGLT2 inhibitors showed an association with lower dementia risk in older people with T2D. Randomized controlled trials are warranted.

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Authors
Wu, C.-Y., Iskander, C., Wang, C., Xiong, L. Y., Shah, B. R., Edwards, J. D., Kapral, M. K., Herrmann, N., Lanctôt, K. L., Masellis, M., Swartz, R. H., Cogo-Moreira, H., MacIntosh, B. J., Rabin, J. S., Black, S. E., Saskin, R., & Swardfager, W.
Affiliations
  • University of Toronto (CA)
  • Institute for Clinical Evaluative Sciences (CA)
  • Sunnybrook Health Science Centre (CA)
  • University of Ottawa (CA)
  • 2Dr. Sandra Black Centre for Brain Resilience and Recovery, Hurvitz Brain Sciences Program, Sunnybrook Research Institute, Toronto, Ontario, Canada
  • Oslo University Hospital (NO)
  • University Health Network (CA)
Corresponding author
Swardfager, Walter
Venue
Diabetes Care
Published
2022-12-12
Volume
46
Issue
2
Pages
297-304
ISSN
  • 0149-5992 (ISSN-L)
  • 1935-5548
OpenAlex
W4311187428
Cited by
139
References
37
Citations by year
2026: 20 · 2025: 57 · 2024: 39 · 2023: 23
FWCI
22.04
Type
journal article
Language
en
Open access
Locations
  • Diabetes Care (publishedVersion)
  • PubMed (publishedVersion)
Funders
  • Michael J. Fox Foundation for Parkinson’s Research (BAND3)
  • Fondation Brain Canada (AARG501466)
  • Canada Research Chairs
  • Canadian Network for Research and Innovation in Machining Technology, Natural Sciences and Engineering Research Council of Canada (RGPIN-2017-06962)
  • Alzheimer’s Research Trust (BAND3)
  • Canadian Institutes of Health Research (202111FBD-476273-75801, PJT-159711)
  • Alzheimer’s Association (AARG501466, BAND3)
  • Weston Brain Institute (BAND3)
  • Banting and Best Diabetes Centre, University of Toronto (Tamarack Graduate Award in Diabetes Research)
Topics
  • Health Sciences › Medicine › Endocrinology, Diabetes and Metabolism › Diabetes Treatment and Management
  • Health Sciences › Medicine › Psychiatry and Mental health › Dementia and Cognitive Impairment Research
  • Health Sciences › Medicine › Physiology › Alzheimer's disease research and treatments
Keywords
SGLT2 inhibitors, dementia risk, type 2 diabetes, DPP-4 inhibitors, dapagliflozin, empagliflozin, canagliflozin, Alzheimer's disease, older adults, as-treated analysis, intention-to-treat analysis
MeSH terms
Sodium-Glucose Transporter 2 Inhibitors, Aged, Alzheimer Disease, Diabetes Mellitus, Type 2, Glucose, Humans, Hypoglycemic Agents, Retrospective Studies, Sodium, Cohort Studies, Sodium-Glucose Transporter 2, Dipeptidyl-Peptidase IV Inhibitors

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