Articles tagged "Histology"

2022 American Transplant Congress
Enhanced Histological Yield and Actionable Findings When Biopsy is Guided by Donor-Derived Cell-Free DNA (dd-cfDNA)
M. R. Weir¹, D. Mandelbrot², J. S. Bromberg¹, S. Mehta³, E. Poggio⁴, E. Huang⁵, G. Shekhtman⁶, N. Agrawal⁷, W. Tian⁸, M. Cooper⁹
¹University of Maryland School of Medicine, Baltimore, MD, ²University of Wisconsin, Madison, WI, ³University of Alabama, Birmingham, AL, ⁴Cleveland Clinic, Cleveland, OH, ⁵Cedars-Sinai Medical Center, Los Angeles, CA, ⁶CareDx Inc., Brisbane, CA, ⁷CareDx Inc, Brisbane, CA, ⁸CareDx, Brisbane, CA, ⁹MedStar Georgetown Transplant Institute, Washington, DC
*Purpose: Implementation of molecular biomarkers in kidney transplantation has expanded the amount of information available to clinicians before deciding to pursue biopsy. We evaluated how…
2022 American Transplant Congress
Wide Spectrum of Molecular Injury Highlights Heterogeneity of Banff Tubulitis and Interstitial Inflammation Lesions
M. J. Ellis¹, T. Maw², E. Huang³, E. Stites⁴, F. Shihab⁵, D. C. Brennan⁶, G. Shekhtman⁷, N. Agrawal⁷, J. Zeng⁷, S. Kung⁸
¹Duke University, Durham, NC, ²University of Southern California, Los Angeles, CA, ³Cedars-Sinai Medical Center, Los Angeles, CA, ⁴University of Colorado, Aurora, CO, ⁵University of Utah, Salt Lake City, UT, ⁶Johns Hopkins School of Medicine, Baltimore, MD, ⁷CareDx, Brisbane, CA, ⁸University of California, San Francisco, San Francisco, CA
*Purpose: The pathological definition and clinical significance of borderline T cell-mediated rejection (BL-TCMR) remains an area of active debate, leading to inconsistencies in therapeutic strategy.…
2022 American Transplant Congress
A Model of Idiopathic Pneumonia Syndrome in Rhesus Macaques
R. S. Bermea¹, K. Ingersoll², L. P. Hariri³, M. Warren², L. Kean², V. Tkachev²
¹Pulmonary & Critical Care Medicine, Massachusetts General Hospital, Boston, MA, ²Hematology/Oncology, Boston Children's Hospital, Boston, MA, ³Pathology, Massachusetts General Hospital, Boston, MA
*Purpose: To create a model of idiopathic pneumonia syndrome (IPS), a deadly complication of hematopoietic stem cell transplantation (HSCT) in Rhesus macaques (RM).*Methods: RM were…
2022 American Transplant Congress
Acute Tubular Injury and Necrosis Do Not Lead to Meaningful Elevations in Donor-Derived Cell-Free DNA (dd-cfDNA)
S. R. Allam¹, M. Cooper², D. Kumar³, T. Maw⁴, A. Wiseman⁵, P. Chuang⁶, G. Shekhtman⁷, N. Agrawal⁷, J. Zeng⁷, E. Huang⁸
¹Medical City Transplant Institute, Fort Worth, TX, ²Medstar Georgetown Transplant Institute, Washington, DC, ³Virginia Commonwealth University, Richmond, VA, ⁴University of Southern California, Los Angeles, CA, ⁵Centura Health, Denver, CO, ⁶Metrolina Nephrology, Charlotte, NC, ⁷CareDx, Brisbane, CA, ⁸Cedars-Sinai Medical Center, Los Angeles, CA
*Purpose: Associations between non-rejection histologic diagnoses and dd-cfDNA have not been extensively characterized. We explored these associations in kidney transplant recipients enrolled in the Kidney…
2022 American Transplant Congress
Deceased Donor Procurement Biopsy Practices, Interpretation, and Histology-Based Decision Making: A Survey of US Transplant Centers
V. Fleetwood¹, D. Axelrod², Y. Caliskan¹, H. Randall¹, J. Wellen³, M. Lichtenberger³, C. Dedert¹, R. Rothweiler⁴, G. F. Marklin⁴, D. Brockmeier⁴, M. A. Schnitzler¹, S. A. Husain⁵, S. Mohan⁵, B. Kasiske⁶, M. Cooper⁷, K. L. Lentine¹
¹Saint Louis U., St. Louis, MO, ²U. of Iowa, Iowa City, IA, ³WUSTL, St. Louis, MO, ⁴Mid-Am. Trans., St. Louis, MO, ⁵Columbia U., New York, NY, ⁶Hennepin Healthcare, Minneapolis, MN, ⁷MedStar Transpl. Inst., Washington, DC
*Purpose: In light of contemporary controversies on the utility of kidney procurement biopsies in predicting allograft outcomes and guiding organ acceptance, we surveyed transplant providers…
2022 American Transplant Congress
Discordant Histological Findings During Acute Rejection in a Combined Face and Hand Transplant Recipient
O. C. Onuh¹, J. Trilles¹, W. J. Rifkin¹, H. Brydges¹, B. F. Chaya¹, R. Rodriguez Colon¹, D. Boczar¹, D. J. Ceradini¹, E. D. Rodriguez¹, B. E. Gelb²
¹Hansjörg Wyss Department of Plastic Surgery, NYU Langone Health, New York, NY, ²Transplant Institute, NYU Langone Health, New York, NY
*Purpose: The purpose of this study is to evaluate histologic findings in a face and bilateral hand transplant recipient that was monitored with multi-site allograft…
2022 American Transplant Congress
Correlating Histology, Immunohistochemical, & Serologic Data in Heart Transplant Recipients: Implications for Molecular Diagnostic Assays
P. Randhawa, Y. Huang
University of Pittsburgh Medical Center, Pittsburgh, PA
*Purpose: The ISHLT classification of rejection in heart allograft biopsies is independent of DSA status. There is only limited data on the prevalence of DSA…
2022 American Transplant Congress
Regulatory Gene Pathways Are Upregulated in Heart Transplant Biopsies with Quilty Lesions
Q. Cai, L. De Las Casas, J. Torrealba
Pathology, UTSW Medical Ctr, Dallas, TX
*Purpose: Quilty lesions (QL) are commonly sub-endocardial lymphoid aggregates found in biopsies from heart transplants. Their appearance and presence in the cardiac tissue is still…
2022 American Transplant Congress
The Impact of Neutralizing Antibodies on Polyomavirus Infections in Mice
D. R. Butcher, B. D. Thompson, H. K. Singh, V. Nickeleit
Pathology and Laboratory Medicine, UNC Chapel Hill School of Medicine, Chapel Hill, NC
*Purpose: Definitive polyomavirus nephropathy (PyVN) affects kidney transplants and impacts allograft function and survival. Data suggest that neutralizing PyV strain specific antibodies can attenuate and…
2022 American Transplant Congress
Fibroblastic Reticular Cell Lama4 Regulates T Cell Migration to Lymph Nodes and Adaptive Immunity
L. Li¹, M. Shirkey¹, T. Zhang¹, W. Piao¹, V. Saxena¹, Z. Mei¹, Y. Guo¹, A. Krupnick¹, A. Kensiski¹, S. Gavzy¹, R. Abdi², J. Bromberg¹
¹Surgery, UMB, Baltimore, MD, ²Harvard University, Boston, MA
*Purpose: Lymph node (LN) stromal laminin α4 (Lama4) is associated with tolerance. We hypothesized that fibroblastic reticular cell (FRC) derived Lama4 contributes to a tolerogenic…

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