ATC Abstracts

American Transplant Congress abstracts

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  • 2021 American Transplant Congress

    Immunosuppression and Cancer Risk in Kidney Transplant Recipients: A Retrospective Cohort Study

    R. Sapir-Pichhadze1, C. Laprise1, X. Zhang1, M. Abrahamowicz1, M. Beauchamp2, A. Della Vecchia1, L. Azoulay1, E. Franco1, B. Nicolau1

    1McGill University, Montreal, QC, Canada, 2McGill University Health Centre, Montreal, QC, Canada

    *Purpose: Kidney transplant recipients (KTR) have an elevated risk of cancer. We sought to estimate to what extent does the immunosuppression regimen increase KTRs’ susceptibility…
  • 2021 American Transplant Congress

    Are All DSA’s the Same? Are We Ready for Precision Medicine in Pediatric LT?

    S. E. Shin1, M. Lee1, N. Yazigi2, K. Khan2, S. Kaufman2, J. Ahn3, O. Timofeeva4, U. Ekong2

    1Georgetown University School of Medicine, Washington, DC, 2Medstar Georgetown Transplant Institute, Medstar Georgetown University Hospital, Washington, DC, 3Biostatistics, Bioinformatics, & Biomathematics, Georgetown University, Washington, DC, 4Histocompatibility Laboratory, Dept. of Pathology & Laboratory Medicine, Georgetown University, Washington, DC

    *Purpose: Donor-specific antibodies (DSA) play an uncertain role in rejection after liver transplantation (LT). We hypothesized that evaluation of epitope differences in HLA-DR/DQ mismatching can…
  • 2021 American Transplant Congress

    Atg16l-Dependent Autophagy Attenuates Procession of Renal Interstitial Fibrosis in Chronic Renal Graft Dysfunction via Regulating Tumor Necrosis Factor Alpha (tnf-α) Induced Endmt

    Z. Gui, Z. Wang, Z. Han, J. Tao, X. Ju, R. Tan, M. Gu

    The First Affiliated Hospital of Nanjing Medical University, Nanjing, China

    *Purpose: Chronic renal graft dysfunction is characterized by inflammation, tubular injury, and interstitial fibrosis. We have confirmed that endothelial-mesenchymal transition (EndMT) was one of important…
  • 2021 American Transplant Congress

    Development of De Novo Antibody in Renal Transplant Recipients with BK Viremia Managed with Immunosuppression Reduction

    R. Hod Dvorai1, R. Lee2, P. Muluhngwi2, M. Raijmakers3, A. Shetty2, A. Tambur2, M. Ison2

    1SUNY Upstate Medical University, Syracuse, NY, 2Northwestern University, Chicago, IL, 3University of Santiago, Santiago, Chile

    *Purpose: To evaluate development of de novo donor specific antibodies (dnDSA) in Renal Transplant Recipients (RTR) with immunosuppression (IS) modulation due to BK viremia (BKV)…
  • 2021 American Transplant Congress

    The Impact of the Covid-19 Pandemic on Measures of Transplant Activity is Higher in Lower-Income Countries: A Multinational Survey Study

    S. Sandal1, B. Boyarsky2, P. Chiang2, A. Massie2, D. Segev2, M. Cantarovich1

    1McGill University, Montreal, QC, Canada, 2Johns Hopkins University, Baltimore, MD

    *Purpose: The COVID-19 pandemic has affected the field of solid organ transplantation due to the “ramp-down” of activity during the initial months. Impact on transplant…
  • 2021 American Transplant Congress

    Journey to Transplant: A Pilot Feasibility Trial of a Virtual Counseling Intervention for Patients and Their Social Support Networks to Improve Access to Kidney Transplant

    A. Hart1, R. Edpuganti2, H. D'Cunha2, S. Kurschner2, W. T. McKinney1, A. Matas1, R. Patzer1, S. Chu1, M. Bruin1, M. Partin1

    1Hennepin Healthcare, University of Minnesota, Minneaplis, MN, 2Hennepin Healthcare Research Institute, Minneaplis, MN

    *Purpose: Home counseling interventions have shown promise in increasing rates of kidney transplant, but are challenging to implement. We piloted a structured but individualized virtual…
  • 2021 American Transplant Congress

    Interruption of Notch Signaling via Blockade of Delta-Like Ligand 4 Prevents Co-Stimulation Blockade Resistant Allograft Rejection

    A. J. Matar, B. P. Lovasik, Y. Dong, D. A. Faber, J. Habib, C. Breeden, J. Regenold, A. Ghosh, A. Stephenson, W. H. Kitchens, A. B. Adams

    Emory University Department of Surgery, Atlanta, GA

    *Purpose: Co-stimulation blockade (CoB) has emerged as a promising immunosuppression strategy with the advent of Belatacept, a novel CTLA4-Ig fusion protein that blocks CD28-mediated T…
  • 2021 American Transplant Congress

    Cost-Effectiveness Analysis of Short-Duration Anti-Viral Prophylaxis for Hepatitis C Positive Donor Kidney Transplants

    I. Yakubu, Y. Zhang, S. Ijioma, N. V. Carroll, J. Patterson, R. Sterling, G. Gupta

    Virginia Commonwealth University Health System, Richmond, VA

    *Purpose: Trials describing 4-12 week courses of direct-acting anti-viral drugs (DAAs) to treat hepatitis C virus (HCV) transmission from infected donors to uninfected kidney transplant…
  • 2021 American Transplant Congress

    Donor Service Area Characteristics Impacting Liver and Kidney Deceased Donor Population

    C. O. Warren, A. Zarrinpar

    Surgery, -University of Florida, Gaiinesville, FL

    *Purpose: While there is ample evidence of racial and ethnic disparities in access to the waitlist, being transplanted, and post-transplant outcomes in liver and kidney…
  • 2021 American Transplant Congress

    Relationship Between %dd-cfDNA, MMDx Molecular Diagnoses, and Donor-specific Antibody in the Trifecta Study

    P. F. Halloran1, L. G. Hildago2, J. Reeve1, Z. Demko3, A. Prewett3, P. Billings3, J. Truong4, P. Vander Horn4, &. Trifecta Study Group5

    1Alberta Transplant Applied Genomics Centre, Edmonton, AB, Canada, 2University of Wisconsin, Madison, WI, 3Natera Inc., San Carlos, CA, 4One Lambda Inc., West Hills, CA, 5., ., AB, Canada

    *Purpose: The Trifecta Study is a prospective multicenter investigator-initiated trial to evaluate the relationship between %dd-cfDNA and molecular biopsy findings at the time an indication…
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