Organ transplantation from deceased donors with vaccine-induced thrombosis and thrombocytopenia

To the Editor: Vaccine-induced thrombosis and thrombocytopenia (VITT) may follow immunization with the ChAdOx1 nCoV-19 vaccine against SARS-CoV-2.1, 2 Autoantibodies to platelet factor 4 (PF4) may mediate VITT through antibody-dependent platelet activation, though the underlying etiology is uncertain.3 Anti-PF4 antibodies are also seen in heparin-induced thrombocytopenia, though most cases of VITT do not have prior heparin exposure. More than 20...