Articles tagged "Biopsy"

2022 American Transplant Congress
Leveraging Single-Cell Signatures in Kidney Transplant Biopsies Uncovers Immunological Heterogeneity Within Rejection Phenotypes
J. Callemeyn¹, B. Lamarthée¹, P. Koshy², T. Debyser³, E. Van Loon¹, A. Franken⁴, T. Van Brussel⁴, I. Arijs⁴, D. Lambrechts⁴, M. Rabant⁵, A. Senev¹, T. Vaulet⁶, C. Tinel¹, M. Naesens¹
¹Microbiology, Immunology and Transplantation, KU Leuven, Leuven, Belgium, ²Department of Morphology and Molecular Pathology, University Hospitals Leuven, Leuven, Belgium, ³Faculty of Medicine, KU Leuven, Leuven, Belgium, ⁴Laboratory for Translational Genetics, Department of Human Genetics, KU Leuven, Leuven, Belgium, ⁵Necker-Enfants Malades Institute, Institut national de la santé et de la recherche médicale (Inserm), Université de Paris, Paris, France, ⁶ESAT Stadius Center for Dynamical Systems, Signal Processing and Data Analytics, KU Leuven, Leuven, Belgium
*Purpose: Rejection of the kidney allograft is hallmarked by the accumulation of inflammatory cells within the renal architecture, leading to microvascular or tubulointerstitial inflammation. However,…
2022 American Transplant Congress
Study of the Composition of the Inflammatory Burden on a Cohort of 125 Rejections by Multiplex Immunofluorescence
A. Mobio¹, M. Eloudzeri², L. Morin¹, J. Duong Van Huyen³, D. Anglicheau¹, M. Rabant³
¹Kidney transplantation, Necker-Enfants Malades Hospital, Paris, France, ²U1151, INEM, Paris, France, ³Pathology, Necker-Enfants Malades Hospital, Paris, France
*Purpose: The exact composition of the inflammatory burden during kidney transplant rejection has not been studied on large cohorts. Moreover, the determinants and impact of…
2022 American Transplant Congress
Defining New Arterial and Arteriolar Lesions Accompanying Transplant Glomerulopathy: Potential Additions to the Histologic Assessment of ABMR
A. Perkowska-Ptasinska¹, D. Deborska-Materkowska², M. Ciszek³, M. Myslak⁴, J. Chang⁵, J. Reeve⁶, P. Halloran⁷
¹Pathology, Medical University of Warsaw, Warsaw, Poland, ²Transplantation Medicine, Nephrology and Internal Diseases, Medical University of Warsaw, Warsaw, Poland, ³Immunology, Transplantation Medicine and Internal Diseases, Medical University of Warsaw, Warsaw, Poland, ⁴Infectious Diseases, Hepatology and Liver Transplantation, Pomeranian Medical University, Szczecin, Poland, ⁵Alberta Transplant Applied Genomics Center, Edmonton, AB, Canada, ⁶Alberta Transplant Applied Genomics Centre, Edmonton, AB, Canada, ⁷Pathology, Alberta Transplant Applied Genomics Centre, University of Alberta, Edmonton, AB, Canada
*Purpose: Transplant glomerulopathy (TG) results from chronic endothelial injury most commonly related to ABMR. Surprisingly, except for PTC, the relation between TG and other vascular…
2022 American Transplant Congress
Urinary Cell CTOT-04 Signature is Diagnostic of Glomerulitis in Kidney Allograft Biopsies
T. Salinas¹, C. Li¹, C. Snopkowski¹, K. Chen¹, S. Albakry¹, S. Salvatore², S. Seshan², J. R. Lee¹, M. Thangamani¹, D. Dadhania¹, M. Suthanthiran¹
¹Nephrology, Weill Cornell-NYPH, New York, NY, ²Pathology, Weill Cornell-NYPH, New York, NY
*Purpose: Antibody mediated rejection is a significant complication after kidney transplantation and is an important cause of allograft failure. In the multicenter CTOT-04 study, we…
2022 American Transplant Congress
Association Between Histopathological Features on Implantation Renal Biopsies and Graft Outcomes and Kdpi
C. Khor, S. McGinn, C. Fisher, R. Yang, K. Richards, K. Muir, J. Lu
Nephrology, Royal North Shore Hospital, Sydney, Australia
*Purpose: The global shortage of organs and the increasing use of marginal kidneys for transplantation necessitates an accurate assessment of deceased donor kidneys. The kidney…
2022 American Transplant Congress
Unravelling the Stage-Shift of Acute Rejection by Urine QSant
W. Yazar¹, N. Titzler¹, R. Sarwal¹, M. Sarwal², S. Ghosh¹
¹Nephrosant, Brisbane, CA, ²NephroSant, Brisbane, CA
*Purpose: Suboptimal performance in current methods for allograft monitoring underscores the unmet need for enhanced immunosurveillance accuracy, to uncover the alloimmunity flux. QSant[Yang et al,…
2022 American Transplant Congress
Poor Outcomes in Patients with Transplant Glomerulopathy Independent of Banff Categorization or Therapeutic Interventions
K. Wu¹, D. Schmidt¹, C. Lopez del Moral¹, Q. Zhang¹, F. Halleck¹, M. G. Naik¹, N. Lachmann², B. Rudolph³, K. Budde¹
¹Department of Nephrology, Charite Campus Mitte, Berlin, Germany, ²Institut für Transfusionsmedizin, Charite Virchow Klinikum, Berlin, Germany, ³Institut für Pathologie, Charite Campus Mitte, Berlin, Germany
*Purpose: Banff classification is an accepted diagnostic tool, but also used as a tool to define endpoints in clinical trials. There is a need to…
2022 American Transplant Congress
A Comparison of Vibration Controlled Transient Elastography, FAST, AGILE-3 and AGILE-4 Scores in Liver Transplant Recipients
T. Arshad¹, M. Tseng², B. Anh³, T. Syed⁴, A. Miller⁵, V. Patel⁴, A. Asgharpour⁴, I. O. Michael⁶, S. Patel⁵, M. Muthiah⁷, M. S. Siddiqui⁴
¹Department of Internal Medicine, VCU, Richmond, VA, ²Internal Medicine, VCU, Richmond, VA, ³Department of Statistical Sciences & Operations Research, VCU, Richmond, VA, ⁴Division of Gastroenterology and Hepatology, VCU, Richmond, VA, ⁵VCU, Richmond, VA, ⁶Department of Pathology, VCU, Richmond, VA, ⁷National University of Singapore, Singapore, Singapore
*Purpose: Hepatic fibrosis is a strong predictor of clinical outcomes following liver transplantation (LT), however, non-invasive fibrosis assessment remains challenging. Vibration controlled transient elastography has…
2022 American Transplant Congress
Histologic Predictors of Graft Loss in Early Clinically Indicated Biopsies After Kidney Transplantation
M. Ajaimy¹, V. Hemmige², L. E. Liriano-Ward³, Y. Azzi¹, S. Kapoor⁴, P. Loarte¹, C. Pynadath⁵, A. Colovai¹, E. Akalin⁶
¹Einstein-Montefiore Transplant Center, Bronx, NY, ²Montefiore Medical Center, Bronx, NY, ³Transplant, Montefiore Medical Center, Bronx, NY, ⁴Montefiore Medical Center, New York, NY, ⁵Einstein-Montefiore Transplant Center, Scarsdale, NY, ⁶Albert Einstein College of Medicine, Montefiore Medical Ctr, Bronx, NY
*Purpose: We aimed to investigate histopathological predictors of graft lost in patients who underwent clinically indicated biopsies for worsening kidney function and/or proteinuria within 3…
2022 American Transplant Congress
Antibody-Mediated Kidney Allograft Rejection (ABMR) Monitoring and Intervention Based on ABMR Subtypes – A Step Towards Precision Diagnosis and Management
A. Rizvi¹, S. Hussain², M. Kueht³, J. Fair³, A. Gamilla-Crudo⁴, M. Mujtaba⁴
¹Internal Medicine, Nephrology, University of Texas Medical Branch, Galveston, TX, ²University of Texas Medical Branch, Houston, TX, ³Surgery, University of Texas Medical Branch, Galveston, TX, ⁴University of Texas Medical Branch, Galveston, TX
*Purpose: The monitoring of kidney allograft for early detection of antibody mediated rejection (ABMR) and subsequent intervention using traditional clinical parameters has been insufficient due…