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Clinical trial No longer in our active list Observational Ages 18 and up

Registry to assess thromboembolic complications in COVID-19 patients

Official title: COVID-19 Registry to Assess Frequency, Risk Factors, Management, and Outcomes of Arterial and Venous Thromboembolic Complications (CORONA-VTE NET)

Run by Brigham and Women's Hospital · NCT04535128 · Data updated 2026-05-14

This study is no longer in our active list. It may have stopped recruiting or finished. The details below are as of 2026-05-14 and are kept for reference. Check ClinicalTrials.gov for its current status, or see similar studies below.

This study looks at how often blood clots happen in COVID-19 patients and what factors might increase that risk to help improve prevention strategies.

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Quick facts

Study typeObservational
Ages18 Years and up
SexAll
Enrollment10000 (estimated)
SponsorBrigham and Women's Hospital
Academic / other
Locations1 site (Boston, Massachusetts)
Trial IDNCT04535128 on ClinicalTrials.gov

Is this trial a fit for you?

Likely a good fit

Ideal candidates include patients who have tested positive for COVID-19 and are either hospitalized or receiving outpatient care.

Probably not a fit

Patients who have not been diagnosed with COVID-19 or those who are not receiving any form of management for the infection may not benefit from this study.

A plain-English reading of the study's rules. Only the study team can confirm whether you qualify.

What this trial studies

This observational study aims to analyze the frequency and risk factors of arterial and venous thromboembolic complications in patients diagnosed with COVID-19. By utilizing electronic health records, the study will evaluate the incidence of symptomatic venous thromboembolism (VTE) and related outcomes over 30 and 90 days. It will also identify independent risk factors for VTE that could inform thromboprophylaxis strategies during and after hospitalization. The study will involve a cohort of 10,000 patients across various U.S. healthcare settings.

Why it matters

Potential benefit: If successful, this study could lead to improved prevention and management strategies for thromboembolic complications in COVID-19 patients.

How similar studies have gone: Other studies have indicated a significant association between COVID-19 and thromboembolic events, suggesting that this approach is grounded in emerging evidence.

Who can join: the full rules

Show full inclusion / exclusion criteria 
1. Positive COVID-19 PCR AND
2. Inpatient OR outpatient management of COVID-19 infection

Where it's running

  • Brigham and Women's Hospital
    Boston, Massachusetts, United States     Recruiting

Study contacts

Similar studies

Other studies for the same condition or treatment. Recruiting studies are listed first.

How to take part

  1. Review the eligibility criteria above with your treating physician.
  2. Check the official listing on ClinicalTrials.gov for the latest contact details and recruitment status.
  3. Contact the study coordinator or principal investigator to ask for pre-screening. Pre-screening is free and never obligates you to enroll.
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Covid19 36Thrombosis Embolism 2Pulmonary Embolism 74Myocardial Infarction 195Stroke 1573Brigham and Women's Hospital 1507
Last reviewed 2026-11-14 by the Find a Trial editorial team. Information on this page is for educational purposes and is not medical advice. Always consult qualified healthcare professionals about clinical trial participation.