Why COVID-19 causes dangerous blood clots and new treatment ideas

Molecular pathogenesis of COVID-19-associated coagulopathy and new therapeutic approaches

NIH-funded research Scripps Research Institute, the · NIH-11251250

This project looks at why SARS-CoV-2 leads to blood clotting problems and tests drug strategies that might prevent or reduce those clots in people with severe or prolonged COVID-19.

Quick facts

Grant typeR01 grant
Study typeNIH-funded research
Funding institutionScripps Research Institute, the NIH-funded
Lab location1 site (La Jolla, United States)
Project IDNIH-11251250 on NIH RePORTER

What this research studies

Researchers will study how SARS-CoV-2 triggers clotting by examining blood vessel cells, immune pathways (including complement and neutrophil activity), and patient blood samples. They will use lab models to recreate the clotting process and test several drug approaches aimed at calming vessel inflammation and stopping excessive clot formation. The team will compare signals from acute severe cases and people with lingering symptoms to understand links to long COVID. Findings will guide which treatment ideas are most promising to move toward human testing.

Who could benefit from this research

Good fit: People hospitalized with severe COVID-19 who show signs of abnormal clotting or patients with persistent post-COVID symptoms linked to clotting may be the most relevant candidates.

Not a fit: People without COVID-related clotting problems or those whose symptoms are unrelated to blood clotting or vascular inflammation are unlikely to benefit directly from this work.

Why it matters

Potential benefit: If successful, this work could lead to new treatments that reduce dangerous clotting, lower the risk of organ damage and blood clots, and possibly lessen some long COVID complications.

How similar studies have performed: Standard anticoagulants have helped some hospitalized patients, but targeted therapies against endothelial, complement, or neutrophil-driven clotting are newer and have limited patient data so far.

Where this research is happening

La Jolla, United States

Researchers

About this research

  1. This is an active NIH-funded research project — typically early-stage science, not a clinical trial accepting patient enrollment.
  2. Some NIH-funded labs run parallel clinical studies or seek volunteers for related work. To check, contact the principal investigator or institution listed above.
  3. For full project details, budget, and progress reports, visit the official NIH RePORTER page below.
Conditions Blood Coagulation Disorders
Last reviewed 2026-06-13 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.