Cited by 396Atrial Fibrillation Management and OutcomesVenous Thromboembolism Diagnosis and ManagementAcute Ischemic Stroke Management

Efficacy and Safety of Dabigatran Compared With Warfarin in Relation to Baseline Renal Function in Patients With Atrial Fibrillation: A RE-LY (Randomized Evaluation of Long-term Anticoagulation Therapy) Trial Analysis

Hijazi, Ziad, Hohnloser, Stefan H., Oldgren, Jonas, Andersson, Ulrika, Connolly, Stuart J., Eikelboom, John W., Ezekowitz, Michael D., Reilly, Paul A. +3 more·2014·Circulation

Abstract

BACKGROUND: Renal impairment increases the risk of stroke and bleeding in patients with atrial fibrillation. In the Randomized Evaluation of Long-Term Anticoagulant Therapy (RELY) trial, dabigatran, with ≈80% renal elimination, displayed superiority over warfarin for prevention of stroke and systemic embolism in the 150-mg dose and significantly less major bleeding in the 110-mg dose in 18 113 patients with nonvalvular atrial fibrillation. This prespecified study investigated these outcomes in relation to renal function. METHODS AND RESULTS: Glomerular filtration rate was estimated with the Cockcroft-Gault, Chronic Kidney Disease Epidemiology Collaboration (CKD-EPI), and Modification of Diet in Renal Disease (MDRD) equations in all randomized patients with available creatinine at baseline (n=17 951), and cystatin C-based glomerular filtration rate was estimated in a subpopulation with measurements available (n=6190). A glomerular filtration rate ≥80, 50 to <80, and <50 mL/min was estimated in 32.6%, 47.6%, and 19.8% and in 21.6%, 59.6%, and 18.8% of patients based on Cockcroft-Gault and CKD-EPI, respectively. Rates of stroke or systemic embolism, major bleeding, and all-cause mortality increased as renal function decreased. The rates of stroke or systemic embolism were lower with dabigatran 150 mg and similar with 110 mg twice daily compared with warfarin, without significant heterogeneity in subgroups defined by renal function (interaction P>0.1 for all). For the outcome of major bleeding, there were significant interactions between treatment and renal function according to CKD-EPI and MDRD equations, respectively (P<0.05). The relative reduction in major bleeding with either dabigatran dose compared with warfarin was greater in patients with glomerular filtration rate ≥80 mL/min. CONCLUSIONS: The efficacy of both dosages of dabigatran was consistent with the overall trial irrespective of renal function. However, with the CKD-EPI and MDRD equations, both dabigatran dosages displayed significantly lower rates of major bleeding in patients with glomerular filtration rate ≥80 mL/min. CLINICAL TRIAL REGISTRATION URL: http://www.clinicaltrials.gov. Unique identifier: NCT00262600.

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Crossref · 10.1161/circulationaha.113.003628

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Authors
Hijazi, Z., Hohnloser, S. H., Oldgren, J., Andersson, U., Connolly, S. J., Eikelboom, J. W., Ezekowitz, M. D., Reilly, P. A., Siegbahn, A., Yusuf, S., & Wallentin, L.
Affiliations
Goethe University Frankfurt (DE)
Venue
Circulation
Published
2014-03-04
Volume
129
Issue
9
Pages
961-970
ISSN
  • 0009-7322 (ISSN-L)
  • 1524-4539
OpenAlex
W2026766534
Cited by
396
References
27
Citations by year
2026: 5 · 2025: 6 · 2024: 20 · 2023: 8 · 2022: 22 · 2021: 34 · 2020: 34 · 2019: 40 · 2018: 59 · 2017: 45 · 2016: 47 · 2015: 48 · 2014: 27 · 2013: 1
FWCI
27.85
Type
journal article
Language
en
Open access
closed
Locations
  • Circulation (publishedVersion)
  • PubMed (publishedVersion)
Topics
  • Health Sciences › Medicine › Cardiology and Cardiovascular Medicine › Atrial Fibrillation Management and Outcomes
  • Health Sciences › Medicine › Internal Medicine › Venous Thromboembolism Diagnosis and Management
  • Health Sciences › Medicine › Epidemiology › Acute Ischemic Stroke Management
Keywords
dabigatran, warfarin, atrial fibrillation, renal dysfunction, glomerular filtration rate, stroke prevention, systemic embolism, major bleeding, all-cause mortality, CKD-EPI, MDRD equation, Cockcroft-Gault, cystatin C, non-valvular atrial fibrillation, anticoagulation
MeSH terms
Dabigatran, Aged, Aged, 80 and over, Anticoagulants, Atrial Fibrillation, Benzimidazoles, Dose-Response Relationship, Drug, Embolism, Female, Glomerular Filtration Rate, Humans, Kidney, Male, Middle Aged, Models, Biological, Risk Factors, Warfarin, beta-Alanine, Treatment Outcome, Stroke, Internationality

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