Articles tagged "Immunogenicity"

2022 American Transplant Congress
An Additional Dose Of Viral Vector Covid-19 Vaccine And Mrna Covid-19 Vaccine In Kidney Transplant Recipients: A Randomized Controlled Trial
J. Bruminhent¹, C. Setthaudom², P. Phornkittikorn³, P. Chaumdee³, S. Prasongtanakij⁴, S. Srisala⁴, K. Malathum¹, S. Boongird⁵, A. Nongnuch⁵, M. Assanatham⁵, S. Kiertiburanakul¹
¹Division of Infectious Diseases, Department of Medicine, Faculty of Medicine Ramathibodi Hospital, Mahidol University, Bangkok, Thailand, ²Immunology Laboratory, Department of Pathology, Faculty of Medicine Ramathibodi Hospital, Mahidol University, Bangkok, Thailand, ³Faculty of Medicine Ramathibodi Hospital, Mahidol University, Bangkok, Thailand, ⁴Office of Research, Academic Affairs and Innovation, Faculty of Medicine Ramathibodi Hospital, Mahidol University, Bangkok, Thailand, ⁵Division of Nephrology, Department of Medicine, Faculty of Medicine Ramathibodi Hospital, Mahidol University, Bangkok, Thailand
*Purpose: An additional dose of the COVID-19 vaccine following a primary series is recommended for solid organ transplant recipients. However, a comparison of the immunogenicity…
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
Differences in Strength and Longevity of SARS-CoV-2-Specific Adaptive Immunity Between Convalescent and Vaccinated SOT Patients and Immunocompetent Individuals
L. Donadeu¹, S. Gomez¹, A. Fava'², E. Crespo¹, F. Moreso³, M. Lopez³, L. Lladó⁴, J. González⁴, I. Campos³, M. Muñoz³, J. Quintero³, J. Esperalba³, O. Bestard³
¹Vall d’Hebron Institut de Recerca (VHIR), Barcelona, Spain, ²Bellvitge University Hospital, L'Hospitalet de Llobregat. Barcelona, Spain, ³Vall d’Hebron University Hospital (HUVH), Barcelona, Spain, ⁴Bellvitge University Hospital, L'Hospitalet de Llobregat, Spain
*Purpose: Short-term adaptive immune memory has been reported among immunocompetent (IC) and convalescent Solid Organ Transplant (SOT) individuals following SARS-CoV-2 infection as well as after…
2022 American Transplant Congress
Immunogenicity and Safety of SARS-CoV-2 Vaccines and Breakthrough Infections Among Solid Organ Transplant Recipients: Systematic Review and Meta-Analysis
A. Villavicencio¹, Y. Ebisu², M. Raja³, A. P. Sanchez-Covarrubias¹, S. Anjan³, J. M. Reynolds¹, J. Simkins³, J. Camargo³, M. I. Morris³, L. Abbo⁴, G. Guerra⁵, Y. Natori⁶
¹Internal Medicine, University of Miami Miller School of Medicine, Miami, FL, ²Kameda Medical Center, Chiba, Japan, ³University of Miami Miller School of Medicine, Miami, FL, ⁴University Of Miami Miller School of Medicine, Miami, FL, ⁵University of Miami Jackson Memorial Hospital, Miami, FL, ⁶University of Miami, Pinecrest, FL
*Purpose: The SARS-CoV-2 pandemic has had a significant impact on the field of solid organ transplant(SOT). Immunization against SARS-CoV-2 is globally available since 2021. SOT…
2022 American Transplant Congress
Islet-Derived Exosomes Carry Self-Antigens and May Induce Autoimmunity After Transplantation
S. Vasu¹, C. Darden², J. Mattke², Y. Liu³, M. C. Lawrence³, B. Naziruddin¹
¹Baylor University Medical Ctr, Dallas, TX, ²Baylor University, Waco, TX, ³Baylor University Medical Center, Dallas, TX
*Purpose: Our earlier observations revealed release of exosomes from human islets containing microRNAs (miRNA) specific to islet stress and damage in vitro and in vivo…
2022 American Transplant Congress
Impaired Cellular Immunity and Elevated Myeloid Derived Suppressor Cells in Kidney Transplant Recipients with Impaired Antibody Response to Covid-19 Vaccination
B. Nibhanupudy¹, K. Mcdonald¹, M. Angelis¹, L. T. Chin¹, P. Wai¹, R. Metzger¹, C. Ashokkumar², R. Sindhi²
¹AdventHealth Transplant Institute, Orlando, FL, ²Plexision, Inc, Pittsburgh, PA
*Purpose: To evaluate post-vaccination cellular and antibody (Ab) immunity after COVID-19 vaccination in single blood samples from 17 kidney transplant (KT) recipients who had received…
2022 American Transplant Congress
Antibody Response and Cellular Phenotyping in Kidney Transplant Recipients Following Sars-CoV-2 Vaccination
N. M. Ali¹, J. Miles², S. Mehta¹, V. Tatapudi¹, B. Lonze¹, E. Weldon¹, Z. Stewart¹, C. DiMaggio¹, J. Allen³, S. Gray-Gaillard³, S. Solis³, M. Tuen³, J. Leonard¹, R. Montgomery¹, R. Herati³
¹Transplant Institute, NYU Langone Health, New York, NY, ²CareDx, Brisbane, NY, ³NYU Langone Health, New York, NY
*Purpose: Correlates of protection for SARS-CoV-2 vaccines are not well-established in kidney transplant recipients(KTRs). Studies have highlighted the importance of neutralizing antibodies(Abs), however data suggests…
2022 American Transplant Congress
Safety and Immunogenicity of Live Viral Vaccination After Pediatric Liver and Kidney Transplantation
A. Feldman¹, B. Beaty¹, N. Ebel², J. Ferrolino³, V. Gopalareddy⁴, J. Hollenbeck⁵, C. Jaramillo⁶, N. Kerkar⁷, S. Lerret⁸, G. Maron³, A. Mavis⁹, N. Ovchinsky¹⁰, M. Sell¹¹, T. Sharma¹², J. Stoll¹³, L. Danziger-Isakov¹⁴
¹UCD, Aurora, CO, ²Stanford, Palo Alto, CA, ³St. Jude, Memphis, TN, ⁴LCH, Charlotte, NC, ⁵Michigan Medicine, Ann Arbor, MI, ⁶PCH, Salt Lake City, UT, ⁷URMC, Rochester, NY, ⁸MCW, Milwaukee, WI, ⁹Duke, Durham, NC, ¹⁰Montefiore, NYC, NY, ¹¹MUSC, Charleston, SC, ¹²BCH, Boston, MA, ¹³WUSM, St Louis, MO, ¹⁴CCHMC, Cincinnati, OH
*Purpose: New recommendations suggest that measles-mumps-rubella vaccine (MMR-vx) and varicella vaccine (VZV-vx) may be administered to certain non-immune transplant recipients. The purpose of this study…
2022 American Transplant Congress
Single Blind Randomized Controlled Trial Comparing BNT162b2 Vs JNJ-78436735 Vaccine As An Additional Dose After Two Doses Of BNT162b2 Vaccine In Solid Organ Transplant (SOT) Recipients
Y. Natori¹, E. Martin², A. Mattiazzi³, J. Bini Viotti¹, K. S. Ortecho⁴, S. Pallikkuth⁵, S. Anjan¹, J. Simkins¹, G. Guerra³
¹Department of Medicine, Division of Infectious Diseases, University of Miami, Miami, FL, ²Department of Medicine, Division of Hepatology, University of Miami, Miami, FL, ³Department of Medicine, Division of Nephrology, University of Miami, Miami, FL, ⁴Miami Transplant Institute, Jackson Health System, Miami, FL, ⁵University of Miami, Miami, FL
*Purpose: Even though a high efficacy and immunogenicity of COVID-19 vaccines have been reported in the general population, vaccine immunogenicity is suboptimal in SOT recipients…
2022 American Transplant Congress
Molecular Characterization of the Plasma Secretome in Pediatric Liver Transplantation (pLTx) Identified Cytokine/Chemokine Signatures Potentially Linked to Beneficial Immunosuppressive Regimes (IS) and Recovery
E. Chichelnitskiy¹, L. Ruhl², I. Goldschmidt³, A. Karch⁴, L. Antiga⁵, D. Debray⁶, L. Hierro⁷, D. Kelly⁸, V. McLin⁹, E. Nicastro¹⁰, J. Pawlowska¹¹, P. Czubkowski¹¹, R. Mikolajczyk¹², U. Baumann¹³, C. Falk¹⁴
¹Institute of Transplant Immunology, Hannover Medical School (MHH), Hannover, Germany, ²Institute of Transplant Immunology, MHH, Hannover, Germany, ³Division of Pediatric Gastroenterology and Hepatology, MHH; European Paediatric Liver Transplantation Network, Hannover, Germany, ⁴Research Group Epidemiological and Statistical Methods, Helmholtz Centre for Infection Research, Braunschweig; German Center for Infection Research, TTU-IICH Hannover;Institute for Epidemiology and Social Medicine, University of Münster, Münster, Germany, ⁵Ospedali Riuniti di Bergamo, Bergamo, Italy, ⁶Hôpital Necker-Enfants Malades, Paris, France, ⁷Hospital Infantil Universitario La Paz, Madrid, Spain, ⁸Birmingham Childrens Hosp, Birmingham, United Kingdom, ⁹Service Spécialités Pédiatriques, Genève, Switzerland, ¹⁰Pediatric Hepatology, Gastroenterology and Transplantation, Hospital Papa Giovanni XXIII, Bergamo, Italy, ¹¹Gastroenterology, Hepatology, Nutritional Disorders and Pediatrics, The Children’s Memorial Health Institute, Warsaw, Poland, ¹²Institute of Medical Epidemiology, Biostatistics and Medical Informatics, University of Halle; German Center for Infection Research, TTU-IICH Hannover; MHH, Halle, Germany, ¹³Division of Pediatric Gastroenterology and Hepatology, MHH; Birmingham Children’s Hospital, UK, Hannover, Germany, ¹⁴Institute of Transplant Immunology, MHH; German Center for Infection Research, TTU-IICH, Hannover, Germany
*Purpose: In the European multicentre “ChilSFree” study we aimed to characterize longitudinal dynamics of soluble immune mediators during the first year after pLTx.*Methods: Using Luminex-based…