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Rationale and design of a registry-based randomized controlled study of personalized biomarker-based risk

Ziad Hijazi1, Lars Wallentin1, Håkan Arheden2

  • 1Uppsala Clinical Research Center, Uppsala University, Uppsala, Sweden; Department of Medical Sciences, Cardiology, Uppsala University, Uppsala, Sweden.

American Heart Journal
|June 25, 2025
PubMed

Insights

Biomarker-based ABC-AF risk scores guide treatment for atrial fibrillation (AF) patients. This study assessed if these risk-guided recommendations improve patient outcomes, aiming to reduce stroke and enhance survival in AF.

Area of Science:

  • Cardiology
  • Clinical Research
  • Biomarkers

Background:

  • Atrial fibrillation (AF) poses significant risks, including stroke and reduced survival.
  • Biomarker-based risk scores, such as ABC-AF, enhance risk prediction in AF patients.
  • Risk-guided treatment strategies show potential for improving patient outcomes in AF.

Purpose of the Study:

  • To evaluate if ABC-AF risk score-guided treatment recommendations improve clinical outcomes in patients with atrial fibrillation.
  • To assess the efficacy of a personalized treatment approach based on biomarker-derived risk stratification.
  • To determine if guided management reduces adverse events compared to standard care in AF.

Main Methods:

  • A national, multicenter, prospective, registry-based, randomized controlled trial (ABC-AF study).
  • 3,933 AF patients were randomized 1:1 to either ABC-AF risk score-guided treatment or standard care.
  • The intervention group received visual risk presentations and treatment recommendations; the control group received standard care.

Main Results:

  • The primary outcome was a composite of stroke or death.
  • Secondary outcomes included stroke, death, major bleeding, myocardial infarction, and heart failure hospitalization.
  • Enrollment concluded in May 2023, with results anticipated in 2025.

Conclusions:

  • The ABC-AF study investigated a novel decision support system for personalized AF management.
  • The research aims to confirm if biomarker-based risk stratification leads to better patient outcomes.
  • Findings will inform clinical practice regarding risk-guided therapies for atrial fibrillation.
Abstract

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