Vaccine-induced immune thrombotic thrombocytopenia

Author:

Cines Douglas B.1ORCID,Greinacher Andreas2ORCID

Affiliation:

1. 1Departments of Pathology and Laboratory Medicine and Medicine, Perelman-University of Pennsylvania School of Medicine, Philadelphia, PA

2. 2Institut für Transfusionsmedizin, Universitätsmedizin Greifswald, Greifswald, Germany

Abstract

Abstract Within the first months of the COVID-19 vaccination campaign, previously healthy recipients who developed severe thrombosis (often cerebral and/or splanchnic vasculature) and thrombocytopenia typically after adenoviral vector-based vaccination were identified. Similarities between this syndrome, vaccine-induced immune thrombotic thrombocytopenia (VITT), and heparin-induced thrombocytopenia prompted recognition of the role of antiplatelet factor 4 (PF4) antibodies and management strategies based on IV immunoglobulin and nonheparin anticoagulants, which improved outcome. We update current understanding of VITT and potential involvement of anti-PF4 antibodies in thrombotic disorders.

Publisher

American Society of Hematology

Subject

Cell Biology,Hematology,Immunology,Biochemistry

Reference84 articles.

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