Articles tagged "Biopsy"

2020 American Transplant Congress
Three-Month Results of a Phase 2 Trial Evaluating Clazakizumab in Late Antibody-Mediated Rejection – Early Impact of Interleukin-6 Blockade on Donor-Specific Antibody Levels, Rejection Morphology and Gene Expression
G. A. Böhmig¹, M. Dürr², B. Jilma³, F. Eskandary¹, E. Chong⁴, S. Schranz³, K. Doberer¹, M. Wahrmann¹, A. Borski¹, H. Regele⁵, J. Kläger⁵, R. Reindl-Schwaighofer¹, J. Reeve⁶, K. Budde², P. F. Halloran⁶
¹Department of Medicine III, Medical University of Vienna, Vienna, Austria, ²Nephrology Department, Charité Berlin, Berlin, Germany, ³Dept. of Clin. Pharmacology, Medical University of Vienna, Vienna, Austria, ⁴Vitaeris Inc., Vancouver, BC, Canada, ⁵Dept. of Clin. Pathology, Medical University of Vienna, Vienna, Austria, ⁶Alberta Transplant Applied Genomics Centre, ATAGC, University of Alberta, Edmonton, AB, Canada
*Purpose: Targeting Interleukin-6 (IL-6) is a promising strategy to counteract antibody-mediated rejection (ABMR). This phase 2 trial (NCT03444103) was designed to evaluate the safety and…
2020 American Transplant Congress
Pathological Characteristics of BK Polyomavirus Nephropathy with Glomerular Involvement
G. Huang¹, X. Chen¹, W. Chen², S. Yang², J. Qiu¹
¹Department of Organ Transplantation, 1st Affiliated Hospital, Zhongshan University, Guangzhou, China, ²Department of Pathology, 1st Affiliated Hospital, Zhongshan University, Guangzhou, China
*Purpose: This study aimed to investigate the pathological characteristics of BK polyomavirus-associated nephropathy with glomerular involvement in kidney transplant recipients.*Methods: Forty-four patients with glomerular BK…
2020 American Transplant Congress
Clinical Implication of Tertially Lymphoid Tissue in the Renal Graft
M. Saito¹, Y. Lee², Y. Sato², S. Narita¹, S. Satoh¹, M. Yanagita², T. Habuchi¹
¹Urology, Akita University Hospital, Akita, Japan, ²Nephrology, Kyoto University Graduate School of Medicine, Kyoto, Japan
*Purpose: Tertialy lymphoid organs (TLTs) are defined as inducible lymphoid tissues that arise in non-lymphoid organs, and chronic sustained inflammation is one of the most…
2020 American Transplant Congress
Role of Cell Free DNA (Allosure) Testing in Recipients of Kidneys with Sub Optimal Donor Quality
Y. A. Qazi, W. Mon, M. Smogorzewski
USC, Los Angeles, CA
*Purpose: The purpose of this study was to evaluate the role of cell-free DNA testing ( Allosure, CareDx, Brisbane , CA) during graft dysfunction in…
2020 American Transplant Congress
Donor Derived Cell Free DNA (dd-cfDNA) and Gene Expression Signatures of Antibody-Mediated Rejection (ABMR) May Improve Accuracy of ABMR Diagnosis (Dx)
H. Zhang¹, C. C. Nast², E. Huang³, N. Ammerman³, A. A. Vo³, S. C. Jordan³, M. Toyoda¹
¹Transplant Immunology Laboratory, Cedars-Sinai Medical Center, Los Angeles, CA, ²Pathology and Laboratory Medicine, Cedars-Sinai Medical Center, Los Angeles, CA, ³Comprehensive Transplant Center, Cedars-Sinai Medical Center, Los Angeles, CA
*Purpose: Dd-cfDNA has a clinically meaningful association with early Dx of ABMR. Here, we evaluated dd-cfDNA measured prior to for-cause biopsies (Bx), and also measured…
2020 American Transplant Congress
Clinical Relevance of Immunoglobulin M Deposition in Peritubular Capillaries in ABO-Incompatible Kidney Transplantation
D. Toki¹, M. Okumi², K. Unagami², Y. Kakuta², H. Ishida², K. Yamashita¹, H. Tachibana¹, A. Hayashida¹, T. Horiuchi¹, Y. Ishiyama¹, K. Honda³, T. Kondo¹, K. Tanabe²
¹Urology, Tokyo Women's Medical University Medical Center East, Tokyo, Japan, ²Urology, Tokyo Women's Medical University, Tokyo, Japan, ³Anatomy, Showa University, Tokyo, Japan
*Purpose: Immunoglobulin M (IgM) deposition in peritubular capillaries (PTCs) is rarely identified in renal allograft biopsies of ABO-compatible kidney transplantation. In ABO-incompatible kidney transplantation (ABOI-KTx)…
2020 American Transplant Congress
Long Term Outcomes of Kidney Transplantation in Patients with AL-Amyloidosis – The Mayo Clinic Experience
A. Bentall¹, C. Heybali², J. Wen³, A. Hatem¹, C. A. Schinstock¹, E. Lorenz¹, M. El Ters¹, M. Mai⁴, H. Khamash⁵, D. Murray⁶, M. D. Stegall⁷, F. G. Cosio¹, M. P. Alexander⁶, N. Leung¹
¹Division of Nephrology and Hypertension, Mayo Clinic, Rochester, MN, ²School of Medicine, Dokuz Eylul University, Izmir, Turkey, ³National Clinical Research Center of Kidney Disease, Jinling Hospital, Nanjing, China, ⁴Division of Nephrology and Hypertension, Mayo Clinic, Jacksonville, FL, ⁵Division of Nephrology and Hypertension, Mayo Clinic, Scottsdale, AZ, ⁶Department of Laboratory Medicine and Pathology, Mayo Clinic, Rochester, MN, ⁷Department of Transplant Surgery, Mayo Clinic, Rochester, MN
*Purpose: New clone-directed therapies and better definition of hematological response criteria allows assessment of post-kidney transplantation outcomes in patients with light-chain (AL) amyloidosis*Methods: Patients with…
2020 American Transplant Congress
Accelerated Decline in Glomerular Density: An Unrecognized Pathologic Process after Kidney Transplantation
A. Denic, B. H. Smith, W. D. Park, M. V. Luhman, M. P. Alexander, A. D. Rule, M. D. Stegall
Mayo Clinic, Rochester, Rochester, MN
*Purpose: Studies in healthy adults have shown that glomerular density slowly declines with older age (-0.5% per decade), and globally sclerotic glomeruli (GSG) slowly increase…
2020 American Transplant Congress
Gene Expression Signatures Associated with Antibody-Mediated Rejection (ABMR) in Renal Allograft Biopsies (Bx) Are Beneficial to Clarifying ABMR Activity in Ambivalent Cases
H. Zhang¹, C. C. Nast², N. Ammerman³, A. A. Vo³, I. Gallegos³, M. Arevalo³, S. C. Jordan³, M. Toyoda¹
¹Transplant Immunology Laboratory, Cedars-Sinai Medical Center, Los Angeles, CA, ²Pathology and Laboratory Medicine, Cedars-Sinai Medical Center, Los Angeles, CA, ³Comprehensive Transplant Center, Cedars-Sinai Medical Center, Los Angeles, CA
*Purpose: “Thoroughly validated gene transcripts” in renal Bx was adopted as one of the criteria for ABMR diagnosis in the latest Banff classification. Here, we…
2020 American Transplant Congress
Urinary Exosomal Hemopexin, a Validated Diagnostic Marker for Rejection in Kidney Transplant Recipients
J. Lee¹, J. Kim², G. Lee², S. Jeon², H. Noh², J. Lim², H. Jung², J. Choi², J. Cho², S. Park², Y. Kim², C. Kim²
¹Internal Medicine, Daegu Fatima Hospital, Daegu, Korea, Republic of, ²Internal Medicine, Kyungpook National University, Daegu, Korea, Republic of
*Purpose: Urinary exosomal hemopexin was identified as a potential diagnostic candidate for kidney allograft rejection in our previous proteomic study. We validated hemopexin as a…