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HLA ; 100(1): 52-58, 2022 Jul.
Article in English | MEDLINE | ID: covidwho-1816658

ABSTRACT

The effects of COVID-19 vaccination on alloimmunization and clinical impact in transplant candidates remain largely unknown. In a 61-year-old man who had no donor-specific antibodies (DSA) and was planned to undergo ABO-incompatible kidney transplantation (ABOi KT), DSAs (anti-A24, anti-B51, and anti-Cw14) developed after COVID-19 vaccination. After desensitization therapy, antibody level was further increased, leading to flow cytometric crossmatch-positive status. Donor-specific T cell immunity using interferon-gamma ELISPOT was continuously negative, whereas SARS-CoV-2 specific T cell immunity was intact. After confirming the C1q-negative status of DSA, the patient received ABOi KT. The patient had stable graft function and suppressed alloimmunity up to 2 months after KT. COVID-19 vaccination might relate to alloimmunization in transplant candidates, and desensitization through immune monitoring can help guide transplantation.


Subject(s)
COVID-19 , Kidney Transplantation , Alleles , Antibodies , COVID-19 Vaccines , Flow Cytometry , Graft Rejection , Graft Survival , HLA Antigens , Humans , Living Donors , Male , Middle Aged , SARS-CoV-2 , Vaccination
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