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Timing, Translation, and Preparedness: Lessons Learned From COVID-19 Anticoagulation in Noncritically Ill
Tobias Tritschler1, Valentin Fuster2, Patrick R Lawler3
1Department of General Internal Medicine, Inselspital, Bern University Hospital, University of Bern, Bern, Switzerland; Inflammation and Chronic Disease Program, University of Ottawa, Ottawa, Ontario, Canada.
Journal of the American College of Cardiology
|July 29, 2026
Summary
Therapeutic-dose anticoagulation for COVID-19 reduced organ support or death risk. Delays in evidence synthesis slowed clinical guideline updates, highlighting the need for better research coordination during health emergencies.
Area of Science:
- Medical Research
- Clinical Evidence Synthesis
- Public Health Emergencies
Background:
- Public health emergencies necessitate rapid clinical evidence generation and translation into practice guidelines.
- Systematic synthesis of challenges and lessons from these evidence translation processes is limited.
Purpose of the Study:
- To examine evidence generation and translation for COVID-19 anticoagulation using randomized controlled trials (RCTs).
- To contextualize evidence translation processes with an individual participant data meta-analysis (IPDMA).
Main Methods:
- Systematic searches identified RCTs comparing therapeutic- vs. non-therapeutic-dose anticoagulation in hospitalized COVID-19 patients.
- Trial characteristics, evidence accumulation, and guideline recommendations were summarized over time.
- An IPDMA was performed to estimate summary treatment effects.
Main Results:
- Evidence evolved from early platform RCTs to subsequent trials (June 2021-July 2023).
- An IPDMA showed therapeutic-dose anticoagulation reduced odds of organ support or death (OR: 0.81; 95% CI: 0.67-0.97) in 6,362 patients.
- Guideline recommendations shifted from prophylactic to therapeutic doses, with varying certainty.
Conclusions:
- Delays in research coordination, data sharing, and synthesis slowed evidence translation for COVID-19 anticoagulation.
- Therapeutic-dose anticoagulation reduced adverse outcomes, serving as a case study for evidence emergence under uncertainty.
- Strengthening research networks, platform trials, and synthesis is crucial for future health emergency response.
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