ATC Abstracts

American Transplant Congress abstracts

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Articles tagged "Biopsy"

  • 2022 American Transplant Congress

    A Novel Approach to Non-Invasive Multimodality Testing with Allosure and Allomap Predicts Microvascular Inflammation with High Accuracy in Kidney Transplant Recipients

    S. Parajuli, F. Aziz, N. Garg, S. E. Panzer, K. Van Hyfte, K. Degner, S. Reese, L. Ptak, N. Wilson, A. Djamali

    University of Wisconsin, Madison, WI

    *Purpose: The most prominent histologic lesion in antibody-mediated rejection (ABMR) is microvascular inflammation (MVI); however, its recognition and scoring can be challenging and poorly reproducible…
  • 2022 American Transplant Congress

    The Correlation Between Kidney Donor Risk Index, Kidney Graft Function and Histological Changes in Early Post-Transplant Renal Biopsy

    N. Slabiak-Blaz, A. Kujawa-Szewieczek, A. Kolonko, H. Karkoszka, A. Wiecek, G. Piecha

    Department of Nephrology, Transplantation and Internal Medicine, Medical University of Silesia, Katowice, Poland

    *Purpose: An appropriate assessment of donor organ quality is crucial to optimize the kidney allocation and improve the long-term outcomes. Kidney Donor Risk Index (KDRI),…
  • 2022 American Transplant Congress

    Molecular Associations in Kidney Transplant Biopsies in the Trifecta Study Indicate That at Least Three Distinct Processes Release Dd-cfDNA: ABMR, TCMR, and Injury

    P. F. Halloran1, J. Reeve1, K. S. Madill-Thomsen1, Z. Demko2, A. Prewett2, P. Billings2, .. and the Trifecta Investigators3

    1Alberta Transplant Applied Genomics Centre, Edmonton, AB, Canada, 2Natera Inc., San Carlos, CA, 3., ., AB, Canada

    *Purpose: In the Trifecta study (ClinicalTrials.gov # NCT04239703 53), elevated plasma dd-cfDNA is associated with molecular rejection in kidney transplant indication biopsies, particularly active ABMR…
  • 2022 American Transplant Congress

    Deep-Learning Based Pathological Assessment of Frozen Procurement Kidney Biopsies

    Z. Yi1, C. Xi1, M. Menon2, P. Cravedi1, B. Murphy1, S. Ward1, F. Salem1, W. Zhang1

    1Icahn School of Medicine at Mount Sinai, New York, NY, 2Yale University School of Medicine, New York, NY

    *Purpose: Organ shortage in kidney transplantation is a major issue for ESKD individuals on the waiting list. Sclerotic glomeruli or interstitial fibrosis on procurement donor…
  • 2022 American Transplant Congress

    Histologic Borderline Reflects Molecular Injury Not Rejection: Results from the Trifecta Study

    P. F. Halloran1, K. S. Madill-Thomsen1, Z. Demko2, A. Prewett2, P. Billings2, P. Gauthier2, .. and the Trifecta Investigators3

    1Alberta Transplant Applied Genomics Centre, Edmonton, AB, Canada, 2Natera Inc., San Carlos, CA, 3., ., AB, Canada

    *Purpose: In the Trifecta study (NCT04239703), we recently compared indication biopsy diagnoses (MMDx and histology) and plasma %dd-cfDNA levels for indication biopsies (JASN in press…
  • 2022 American Transplant Congress

    Reassessment of Previous Kidney Discards from a Single Large Organ Procurement Organization

    S. Bunnapradist1, T. Seto2, A. Cohen2, T. Rosenthal1, G. Danovitch1

    1David Geffen School of Medicine, Los Angeles, CA, 2One Legacy, Los Angeles, CA

    *Purpose: After deceased donor kidneys are recovered, they are offered according to UNOS policy and are discarded if no centers in the country would use…
  • 2022 American Transplant Congress

    The Relative Association of Clinical Variables and Histologic Lesions with Molecular Rejection in Kidney Transplant Biopsies

    M. L. Sikosana1, J. Reeve2, P. F. Halloran2, INTERCOMEX Investigators3

    1University of Alberta, Edmonton, AB, Canada, 2Alberta Transplant Applied Genomics Centre, Edmonton, AB, Canada, 3INTERCOMEX, Edmonton, AB, Canada

    *Purpose: Availability of molecular assessment (MMDx) independent of conventional variables (time, clinical, histologic, and HLA antibody) presents an opportunity to re-assess the relative strength of…
  • 2022 American Transplant Congress

    The Ontario Anatomic Kidney Score (OAKS) : Quantitative Macroscopic Assessment versus Histological Grading in Pre-transplant Evaluation of Donor Kidneys

    J. Mello Offerni1, D. Matty2, H. Abed3, P. Roshanov4, A. Sener1, P. Luke1

    1Urology, Western University, London, ON, Canada, 2Undergraduate Medical Education, Western University, Schulich School of Medicine & Dentistry, London, ON, Canada, 3Division of Urology, Department of Surgery, Schulich School of Medicine & Dentistry, Western University, London, ON, Canada, 4Division of Nephrology, Department of Internal Medicine, Schulich School of Medicine & Dentistry, Western University, London, ON, Canada

    *Purpose: Quantitative gross assessment of a kidney has not been used to influence the evaluation to utilize a kidney for transplantation. The Ontario Anatomic Kidney…
  • 2022 American Transplant Congress

    Treading the Paradigm Shift: A Single Center Comparative Study of Outcomes Between Pre-Emptive and Early Kidney Transplant with Non Pre-Emptive Kidney Transplant Recipients Innational Kidney and Transplant Institute

    E. U. Go, L. Baloloy

    Organ Transplantation and Vascular Surgery, National Kidney and Transplant Institute, Quezon City, Philippines

    *Purpose: To compare the 3-year outcome of pre-emptive and early kidney transplant recipients versus non pre-emptive recipients in our institution from January 2013 to December…
  • 2022 American Transplant Congress

    Biopsy Characteristics of Kidneys from a Single Large OPO

    S. Bunnapradist1, T. Seto2, A. Cohen2, T. Rosenthal1, G. Danovitch1

    1David Geffen School of Medicine, Los Angeles, CA, 2One Legacy, Los Angeles, CA

    *Purpose: As deceased donor pool have expanded, kidney biopsy has been increasingly used to help determine organ suitability for transplant. There are concerns that biopsy…
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