Articles tagged "Vaccination"

2022 American Transplant Congress
Kinetics of dd-cfDNA in Kidney Transplant Recipients Following Sars-CoV-2 Vaccination Booster Administration
N. M. Ali¹, S. Mehta¹, V. Tatapudi¹, A. Mattoo¹, I. Soomro¹, J. Benstein¹, H. Neumann¹, F. Zervou¹, J. Miles², R. Montgomery¹
¹Transplant Institute, NYU Langone Health, New York, NY, ²CareDx, Brisbane, CA
*Purpose: Evolving data suggests booster vaccine doses enhance the immunogenicity of SARS-CoV-2 vaccines in solid organ transplant recipients with higher IgG responses, neutralizing antibodies titers,…
2022 American Transplant Congress
Immunogenicity of a 3rd Dose of Mrna Covid-19 Vaccine in Kidney Transplant Recipients Who Failed to Respond to 2 Prior Doses
W. Werbel¹, A. Karaba¹, T. Chiang¹, T. Liang¹, A. Massie¹, M. Bettinotti¹, W. Clarke¹, N. Watson², A. Tobian¹, C. Durand¹, N. Bridges², D. Rostrosen², C. Larsen³, P. Heeger⁴, D. Segev¹
¹Johns Hopkins, Baltimore, MD, ²NIAID, Bethesda, MD, ³Emory University, Atlanta, GA, ⁴Mt. Sinai School of Medicine, New York, NY
*Purpose: Kidney transplant recipients (KTRs) have diminished immune response and protection after 2-dose mRNA COVID-19 vaccination. It is unknown if additional doses improve neutralization of…
2022 American Transplant Congress
Role of Vaccination in the COVID-19 Nationwide Cohort (N3C) of Solid Organ Transplant Recipients
A. J. Vinson¹, A. Anzalone², R. Dai², E. French³, A. Olex³, J. Sun⁴, G. Agarwal⁵, S. Lee⁶, R. B. Mannon⁷
¹Nova Scotia Health Authority, Halifax, NS, Canada, ²University of Nebraska Medical Center, Omaha, NE, ³Wright Center for Clinical and Translational Research, Richmond, VA, ⁴Johns Hopkins University Bloomberg School of Public Health, Baltimore, MD, ⁵University of Alabama at Birmingham, Birmingham, AL, ⁶University of Saskatchewan, Regina, SK, Canada, ⁷Medicine, University of Nebraska Medical Center, Omaha, NE
*Purpose: Immunosuppressed solid organ transplant (SOT) patients have been repeatedly challenged in the COVID-19 pandemic with significant morbidities and mortality following infection and a suppressed…
2022 American Transplant Congress
SARS-CoV-2 Antibody Response by mRNA Vaccine Platform in Incrementally Immunosuppressed Patients
J. Mitchell¹, C. Connolly¹, T. Chiang¹, J. Alejo¹, W. Werbel¹, D. Segev¹, A. Massie²
¹Johns Hopkins University, Baltimore, MD, ²Johns Hopkins School of Medicine, Baltimore, MD
*Purpose: This study compares SARS-CoV-2 antibody responses between the two-dose mRNA-1273 and BNT162b2 vaccine series across groups of incrementally immunosuppressed patients.*Methods: Semiquantitative testing for antibodies…
2022 American Transplant Congress
Antibody Response to Sars-CoV-2 Vaccine Among Kidney Transplant Recipients: A Retrospective Cohort Study
H. Ishida¹, K. Unagami², K. Ishii³, T. Kanzawa², T. Yagisawa⁴, K. Tanabe², M. Furusawa²
¹Tokyo Women's, Tokyo, Japan, ²Tokyo Women's Medical University, Tokyo, Japan, ³Tokyo Wimen's Medical University, Tokyo, Japan, ⁴Department of Urology, Tokyo Women's Medical University, Tokyo, Japan
*Purpose: We examined a positivity of corona virus antibody in kidney transplant recipients who received two-doses BNT162B2 (mRNA) vaccination during the beginning 6 months in…
2022 American Transplant Congress
COVID Infection Among Kidney Transplant Recipient During the Era of COVID Vaccination: Management Outcomes
G. Uehara, K. Soliman, V. Rao, M. Casey, D. Taber, M. Posadas Salas
Nephrology, Medical University of South Carolina, Charleston, SC
*Purpose: COVID pandemic has posed a significant challenge among kidney transplant recipients (KTR) due to their immunocompromised state. There is uncertainty on immunosuppression (IS) management…
2022 American Transplant Congress
Antibody Response and Molecular Graft Surveillance in Kidney Transplant Recipients Following Sars-CoV-2 Vaccination
N. M. Ali¹, J. Miles², S. Mehta¹, V. Tatapudi¹, Z. Stewart¹, B. Lonze¹, M. Mangiola¹, C. DiMaggio¹, E. Weldon¹, I. Saeed¹, J. Leonard¹, R. Herati¹, J. Thomas¹, J. Michael¹, C. Hickson¹, K. Cartiera¹, R. Montgomery¹
¹Transplant Institute, NYU Langone Health, New York, NY, ²CareDx, Brisbane, NY
*Purpose: Preliminary studies suggest that kidney transplant recipients (KTRs) show diminished humoral responses to SARS-CoV-2 vaccination. Although reports of allograft rejection after SARS-CoV-2 vaccination have…
2022 American Transplant Congress
A Third Dose of SARS-CoV-2 Vaccine Increases Neutralizing Antibodies Against Variants of Concern in Solid Organ Transplant Recipients
A. H. Karaba¹, X. Zhu¹, T. Ling¹, K. H. Wang¹, A. G. Rittenhouse¹, O. Akinde¹, Y. Eby¹, J. E. Ruff¹, J. N. Blankson¹, A. T. Abedon¹, J. L. Alejo¹, A. L. Cox¹, J. R. Bailey¹, E. A. Thompson¹, S. L. Klein¹, D. S. Warren¹, J. M. Garonzik-Wang², B. J. Boyarsky¹, I. Sitaras¹, A. Pekosz¹, D. L. Segev¹, A. A. Tobian¹, W. A. Werbel¹
¹Johns Hopkins University, Baltimore, MD, ²University of Wisconsin School of Medicine and Health, Madison, WI
*Purpose: Vaccine-induced SARS-CoV-2 antibody responses are attenuated in solid organ transplant recipients (SOTRs) and breakthrough infections are more common. Additional SARS-CoV-2 vaccine doses increase anti-spike…
2022 American Transplant Congress
Outcomes of SARS-CoV-2 Infection in Unvaccinated Compared with One or Two Dose Vaccinated Solid Organ Transplant Recipients: A Multicenter, Matched Cohort Study
V. G. Hall¹, G. Alahmadi², J. T. Solera², T. Marinelli², H. Cardinal³, G. Ramesh Prasad⁴, S. A. De Serres⁵, D. Isaac⁶, R. Mainra⁷, C. Lamarche⁸, R. Sapir-Pichhadze⁹, S. Gilmour¹⁰, J. Matelski², A. Humar², D. Kumar²
¹University Health Network/Toronto General Hospital, Toronto, ON, Canada, ²UHN, Toronto, ON, Canada, ³Department of Medicine, UMontreal, Montreal, QC, Canada, ⁴Kidney Transplant Program, St. Michael's Hospital, Toronto, ON, Canada, ⁵Transplantation Unit, Renal division, Laval University, Quebec, QC, Canada, ⁶Division of Transplant Medicine, University of Calgary, Calgary, AB, Canada, ⁷University Health Center of Saskatchewan, Saskatoon, SK, Canada, ⁸Hôpital Maisonneuve-Rosemont Research Institute, Montreal, QC, Canada, ⁹McGill University, Montreal, QC, Canada, ¹⁰Stollery Children's Hospital, Edmonton, AB, Canada
*Purpose: It is unknown if vaccine breakthrough COVID-19 infections are milder or as severe as infections in unvaccinated solid organ transplant (SOT) recipients.*Methods: We performed…
2022 American Transplant Congress
Impact of Immunosuppression on T-cell Responses After mRNA-Based Sars-CoV-2 Vaccination
E. Wong¹, N. L. Bert², H. K. Sran¹, A. Lim¹, M. D'Costa¹, K. Akalya², S. Hang², A. Bertoletti², A. Vathsala¹
¹National University Centre for Organ Transplantation, National University Hospital, Singapore, Singapore, ²Programme in Emerging Infectious Diseases, Duke-National University of Singapore Medical School, Singapore, Singapore
*Purpose: Administration of mRNA-based SARS-CoV-2 vaccines confers protection from SARS-CoV-2 infection and reduces its severity in the general population. It has been suggested that mounting…

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