An international registry for CVT after COVID vaccination

The Register of the International Cerebral Venous Thrombosis Consortium (ICVTC)

There are currently several uncertainties surrounding the clinical epidemiology, disease mechanisms, and management of cerebral vein thrombosis that occurs after vaccination against COVID infection.

Upon announcing the first of these drafted cases, the International Cerebral Venous Thrombosis Consortium received ethical approval and established an international prospective registry for cerebral venous thromboses that occur after vaccination against COVID infections. So far, around 50 cases from various hospitals around the world have been included.

The International Cerebral Venous Thrombosis Consortium is a global collaboration of academic researchers with the primary aim of conducting research-initiated research on cerebral venous thrombosis (CVT). There are currently 32 hospitals in the consortium and we hope to increase that number.

The aim of the study is to report clinical manifestations, laboratory findings, management and results of patients with CVT after a COVID-19 vaccination. The registry includes CVT patients with radiologically confirmed CVT with CVT symptoms occurring within 4 weeks of COVID-19 vaccination and informed consent.

The main researcher is Jonathan Coutinho from the Medical Centers of the University of Amsterdam (

additional Information

Dr. Jonathan Coutinho, MD, PhD
Neurologist, Amsterdam University Hospitals, AMC site, Department of Neurology | Room H2-260, Meibergdreef 9 | 1105 AZ Amsterdam | The Netherlands

Prof. Marcel Arnold, MD
Chairman / Chief Physician, Stroke Center, Clinic for Neurology, INSELSPITAL, University Hospital Bern, 3010 Bern, Switzerland

Prof. Dr. med. José M. Ferro
Full Professor of Neurology, Faculty of Medicine, University of Lisbon; Director Department of Neuroscience and Mental Health and Neurology Service, Santa Maria Hospital, Centro Hospitalar Lisboa Norte, Lisbon, Portugal

Prof. Prof. Turgut Tatlisumak, MD, PhD
Professor of Neurology and Stroke Medicine, Gothenburg University, Gothenburg, Sweden

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