Articles tagged "Non-invasive diagnosis"

2021 American Transplant Congress
High Levels of Donor-Derived Cell-Free DNA Predict EGFR Decline After Kidney Transplantation
T. Alhamad¹, V. Bowers², E. Stites³, S. Anand⁴, J. S. Bromberg⁵, H. Murad¹, G. Gupta⁶, I. Moinuddin⁶, L. Bu⁷, S. Ghosh⁸, J. Zeng⁸, A. Pai⁹
¹Washington University in St. Louis, St. Louis, MO, ²Tampa General Hospital, Tampa, FL, ³University of Colorado, Aurora, CO, ⁴Intermountain Medical Center, Murray, UT, ⁵University of Maryland School of Medicine, Baltimore, MD, ⁶Virginia Commonwealth University, Richmond, VA, ⁷University of Minnesota, Minneapolis, MN, ⁸CareDx, Brisbane, CA, ⁹University of Texas McGovern Medical School, Houston, TX
*Purpose: Persistent, low-grade inflammation is associated with decline in eGFR. Cross-sectional studies have demonstrated a consistent association between circulating inflammatory markers and kidney function. Our…
2021 American Transplant Congress
Benign Pneumatosis Intestinalis with Pneumoperitoneum in the Immunocompromised Patient: Three Cases
A. Mohamed, K. Delvecchio, T. Kitajima, M. Rizzari, K. Collins, A. Yoshida, S. Nagai, J. Denny, M. Abouljoud
Department of Transplant and Hepatobiliary Surgery, Henry Ford Hospital, Detroit, MI
*Purpose: Isolated pneumatosis intestinalis after solid organ transplantation, as well as its surgical management in appropriate clinical context, is a well described entity. The management…
2021 American Transplant Congress
Assessment of Donor-Derived Cell-Free DNA Performance Characteristics Across the Spectrum of TCMR and ABMR After Kidney Transplant
L. Bu¹, S. Anand², A. Pai³, J. S. Bromberg⁴, T. Alhamad⁵, V. Bowers⁶, I. Moinuddin⁷, S. Ghosh⁸, W. Tian⁸, E. Stites⁹, G. Gupta⁷
¹University of Minnesota, Minneapolis, MN, ²Intermountain Medical Center, Murray, UT, ³University of Texas McGovern Medical School, Houston, TX, ⁴University of Maryland School of Medicine, Baltimore, MD, ⁵Washington University in St. Louis, St. Louis, MO, ⁶Tampa General Hospital, Tampa, FL, ⁷Virginia Commonwealth University, Richmond, VA, ⁸CareDx, Brisbane, CA, ⁹University of Colorado, Aurora, CO
*Purpose: Different donor-derived cell-free DNA (dd-cfDNA) thresholds have been reported in association with varying TCMR, ABMR and “Borderline” diagnoses. Interpretation of dd-cfDNA levels spanning active…
2021 American Transplant Congress
Kidney Transplant Rejection Can Be Diagnosed or Even Predicted by Tracking Donor Reactive T Cell Clones in Post-transplant Samples
Y. Sambandam¹, M. Kandpal¹, J. He¹, X. Huang¹, T. S. Taylor¹, A. A. Shetty², J. M. Mathew¹, J. R. Leventhal¹
¹Surgery-Comprehensive Transplant Center, Northwestern University Feinberg School of Medicine, Chicago, IL, ²Medicine, Nephrology Division, Northwestern University Feinberg School of Medicine, Chicago, IL
*Purpose: To test if kidney transplant (KTx) rejection can be diagnosed by monitoring for donor reactive T-cell (DRTC) clones in post-transplant (post-tx) biopsy and non-invasively…
2021 American Transplant Congress
Donor-Derived Cell-Free DNA Levels Risk-Stratify Polyoma BK Viremia and Associated Clinical Events After Kidney Transplantation – Preliminary Results from ADMIRAL Study
A. Pai¹, L. Bu², J. S. Bromberg³, G. Gupta⁴, I. Moinuddin⁴, T. Alhamad⁵, V. Bowers⁶, S. Ghosh⁷, W. Tian⁷, E. Stites⁸, S. Anand⁹
¹University of Texas McGovern Medical School, Houston, TX, ²University of Minnesota, Minneapolis, MN, ³University of Maryland School of Medicine, Baltimore, MD, ⁴Virginia Commonwealth University, Richmond, VA, ⁵Washington University in St. Louis, St. Louis, MO, ⁶Tampa General Hospital, Tampa, FL, ⁷CareDx, Brisbane, CA, ⁸University of Colorado, Aurora, CO, ⁹Intermountain Medical Center, Murray, UT
*Purpose: The threshold of 10,000 copies for blood Quant BK PCR has been used as a surrogate for BK nephropathy (BKN) in kidney transplant recipients…
2021 American Transplant Congress
High Donor-Derived Cell-Free DNA Levels Predict Development of De Novo HLA Donor-Specific Antibodies After Kidney Transplantation – Data from the ADMIRAL Study
G. Gupta¹, T. Alhamad², V. Bowers³, I. Moinuddin¹, S. Ghosh⁴, J. Zeng⁴, E. Stites⁵, A. Pai⁶, J. S. Bromberg⁷, S. Anand⁸
¹Virginia Commonwealth University, Richmond, VA, ²Washington University in St. Louis, St. Louis, MO, ³Tampa General Hospital, Tampa, FL, ⁴CareDx, Brisbane, CA, ⁵University of Colorado, Aurora, CO, ⁶University of Texas McGovern Medical School, Houston, TX, ⁷University of Maryland School of Medicine, Baltimore, MD, ⁸Intermountain Medical Center, Murray, UT
*Purpose: Donor-derived cell-free DNA (dd-cfDNA) as a marker of injury can serve to quantify subclinical inflammation and molecular injury. As the release of graft genomic…
2021 American Transplant Congress
Urinary Exosomal Cystatin C and Lipopolysaccharide Binding Protein as Biomarkers for Monitoring Antibody-mediated Rejection After Kidney Transplantation
M. Kim, S. Lim, S. Shin
Department of Surgery, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea, Republic of
*Purpose: This study aims to discover and validate urinary exosomal biomarkers for antibody-mediated rejection (ABMR) after kidney transplantation.*Methods: A total of 60 urine samples from…
2021 American Transplant Congress
Donor-derived Cell-free DNA in Upper Extremity Vascular Composite Allograft Recipients
R. Kalsi¹, M. Abuzeineh², J. Littleton¹, J. T. Shores¹, D. S. Cooney¹, C. Cooney¹, R. J. Redett¹, G. Brandacher¹, D. C. Brennan²
¹Plastic and Reconstructive Surgery, Johns Hopkins University, Baltimore, MD, ²Nephrology, Johns Hopkins University, Baltimore, MD
*Purpose: Diagnosing rejection in VCA recipients relies on clinical exam and biopsy which are both easily confounded by common causes of skin irritation. dd-cfDNA in…
2021 American Transplant Congress
Donor-Derived Cell-Free DNA Performance Characteristics are Similar for Repeat and Primary Kidney Transplant Recipients
V. R. Peddi¹, S. Akkina², S. C. Jordan³, W. Tian⁴, Y. Qazi⁵
¹California Pacific Medical Center, San Francisco, CA, ²Loyola University Medical Center, Maywood, IL, ³Cedars-Sinai Medical Center, Los Angeles, CA, ⁴CareDx, Brisbane, CA, ⁵University of Southern California, Los Angeles, CA
*Purpose: Repeat kidney transplants (RKT) represent 12.4% of kidney transplants (KT) (10.9% of all living donor and 13.6% of all deceased donor). Most RKT are…
2021 American Transplant Congress
Nonadherence Post-kidney Transplant is Associated with Increased Immune Activation Detected by Peripheral Blood Gene Expression Assay
N. Singh¹, A. Palermini¹, M. S. Naseer¹, T. Le¹, S. Tandukar¹, D. Aultman², H. Shokouh-Amiri², G. Zibari²
¹Transplant, John C. McDonald Regional Transplant Center - Willis Knighton Health System, Shreveport, LA, ²Advanced Surgery, John C. McDonald Regional Transplant Center - Willis Knighton Health System, Shreveport, LA
*Purpose: Nonadherence to immunosuppression medications is common post-transplantation. We hypothesize that nonadherence results in a heightened alloimmune response in kidney transplant recipients (KTRs) which in…