Articles tagged "Genomic markers"

2021 American Transplant Congress
Remote Monitoring Using Mobile Phlebotomy and Donor-derived Cell-free DNA in Kidney Transplant Recipients During the Covid-19 Pandemic
N. Ali¹, J. Miles², V. Tatapudi¹, R. Montgomery¹
¹NYU Langone, New York, NY, ²Medical Science Liason, CareDx, Brisbane, CA
*Purpose: The rapid shift to telemedicine and remote monitoring of kidney transplant recipients (KTRs) during COVID-19 aimed to mitigate exposure risk for this vulnerable population.…
2021 American Transplant Congress
Urinary Exosome Mrna Signature for the Diagnosis of Human Kidney Transplant Rejection
R. El Fekih¹, J. Hurley², V. Tadigotla², A. Alghamdi³, A. Srivastava⁴, C. Coticchia², J. Choi¹, H. Allos⁵, k. yatim⁵, J. Alhaddad⁵, S. Eskandari⁵, P. Chu⁵, A. Mihali⁵, I. Lape⁵, M. Lima Filho⁵, B. Ayoma⁵, A. Chandraker⁵, K. Safa⁶, J. Markmann⁶, L. Riella⁶, R. Formica⁷, J. Skog², J. Azzi⁵
¹Medecine, Brigham and Women Hospital, Boston, MA, ²Exosome Diagnostics, Boston, MA, ³Boston Children Hospital, Boston, MA, ⁴Center for Translational Metabolism and Health, Chicago, IL, ⁵Transplantation Research Center, Boston, MA, ⁶Massachusetts General Hospital, Boston, MA, ⁷Yale School of Medicine, New Haven, CT
*Purpose: Traditional biomarkers currently used to monitor the kidney allograft, such as creatinine and proteinuria, are late markers of injury and lack sensitivity, specificity and…
2021 American Transplant Congress
Blood Gene Expression and Donor-derived Cell Free DNA for Diagnosing Subclinical Acute Rejection in Stable Kidney Transplant Recipients
S. Park¹, K. Guo², H. Raymond³, E. Poggio⁴, D. Taber⁵, C. Marsh⁶, S. Kurian⁷, S. Kleiboeker⁸, J. Weems⁸, J. Holman⁹, L. Zhao², R. Sinha⁸, S. Brietigam², C. Rebello², M. Abecassis¹⁰, J. Friedewald¹
¹Transplant Nephrology, Northwestern University, Chicago, IL, ²Feinberg School of Medicine, Northwestern University, Chicago, IL, ³Mayo Clinic College of Medicine and Science, Phoenix, AZ, ⁴Department of Nephrology and Hypertension, Cleveland Clinic, Cleveland, OH, ⁵Division of Transplant Surgery, Medical University of South Carolina, Charleston, SC, ⁶Department of Medicine and Surgery, Scripps Clinic and Green Hospital, La Jolla, CA, ⁷Scripps Health, La Jolla, CA, ⁸Eurofins US Clinical Diagnostics, Lee's Summit, MO, ⁹Transplant Genomics, Inc, Mansfield, MA, ¹⁰University of Arizona College of Medicine, Tucson, AZ
*Purpose: A blood gene expression profile (GEP) has been established as a non-invasive screen for subclinical acute rejection (subAR). For patients with allograft dysfunction, donor-derived…
2021 American Transplant Congress
Does the Timing of Subclinical Acute Rejection After Kidney Transplant Matter?
P. Portocarrero¹, S. Park², K. Guo³, L. Zhao³, J. Friedewald²
¹Nephrology, Northwestern University, Chicago, IL, ²Transplant Nephrology, Northwestern University, Chicago, IL, ³Feinberg School of Medicine, Northwestern University, Chicago, IL
*Purpose: We hypothesized that the timing of subclinical acute rejection (subAR) diagnosed with biopsy, gene expression profile or donor-derived cell-free DNA is associated with poor…
2021 American Transplant Congress
Analysis of Single Cell RNA Sequencing Data to Define Biomarkers of Human Liver Immune Tolerance
B. Rocque¹, A. Barbetta¹, P. Singh¹, C. Goldbeck¹, D. G. Helou², E. Loh³, N. Ung⁴, J. S. Lee⁴, O. Akbari², J. Emamaullee¹
¹Surgery, University of Southern California Keck School of Medicine, Los Angeles, CA, ²Molecular Microbiology and Immunology, University of Southern California, Los Angeles, CA, ³Norris Medical Library, University of Southern California Keck School of Medicine, Los Angeles, CA, ⁴Ellison Institute, University of Southern California, Los Angeles, CA
*Purpose: The liver is unique in its ability to maintain immune homeostasis and promote operational tolerance following solid organ transplantation. Single-cell RNA sequencing (scRNA seq)…
2021 American Transplant Congress
Early Experience with Broad Renal Genetic Testing in an Academic Transplant Center
E. Tantisattamo¹, K. Brossart², N. Ioannou², S. McCormick², P. R. Billings², H. Tabriziani²
¹Division of Nephrology, Hypertension and Kidney Transplantation, Division of Nephrology, Hypertension and Kidney Transplantation, Department of Medicine, University of California Irvine School of Medicine, Orange, CA, ²Natera, Inc., San Carlos, CA
*Purpose: Genetic testing is an emerging tool in kidney transplantation (KT), particularly to assess risk of recurrent disease in patients with KT and for selection…
2021 American Transplant Congress
Detection of Rejection in Kidney Transplant Patients Using an Algorithm That Combines Donor Fraction and Absolute Donor-derived Cell-free DNA
S. Bunnapradist¹, E. Ahmed², M. Maninder², Z. P. Demko², P. R. Billings², H. Tabriziani², P. Gauthier³
¹David Geffen Sch of Med @ UCLA, Los Angeles, CA, ²Natera, Inc., San Carlos, CA, ³Natera, Inc., Los Angeles, CA
*Purpose: Donor-derived cell-free DNA (dd-cfDNA) in the plasma of renal allograft patients is a clinically validated biomarker for allograft injury and rejection. Several dd-cfDNA assays…
2021 American Transplant Congress
Identification of Molecular Markers for Liver Cirrhosis by Single-nucleus Rna Sequencing
C. Kuscu¹, C. Kuscu¹, M. Akram², A. Shetty³, D. G. Maluf⁴, J. Eason¹, V. Mas⁵
¹Surgery, James D Eason Transplat Institute, Memphis, TN, ²Surgery, Center for Biomedical Informatics, Memphis, TN, ³Surgery, Institute for Genome Sciences, School of Medicine, Baltimore, MD, ⁴Surgery, Program in Transplantation University of Maryland, Baltimore, MD, ⁵Surgery, Division of Surgical Science University of Maryland, Baltimore, MD
*Purpose: Non-alcoholic fatty liver disease (NAFLD) is characterized by metabolic syndrome and the accumulation of fat in the liver cells (hepatocytes) leading to inflammation and…
2021 American Transplant Congress
Integrative Analyses of Circulating Small Rnas and Paired Kidney Graft Transcriptome in Transplant Glomerulopathy
C. Kuscu¹, K. Manjari², M. Akram³, C. Kuscu⁴, A. Wolen,⁴, A. Bajwa⁴, J. Eason⁴, D. G. Maluf⁵, V. Mas⁶, E. Akalin⁷
¹Surgery, James D Eason Transplant Institute, UTHSC, Memphis, TN, ²Department of Systems and Computational Biology, School of Life Sciences, University of Hyderabad,, Hyderabad,, India, ³Center for Biomedical Informatics, University of Tennessee Health Science Center, Memphis, TN, ⁴Surgery, James D Eason Transplant Institute, Memphis, TN, ⁵Surgery, Program in Transplantation, University of Maryland, Baltimore, MD, ⁶Surgery, Division Surgical Science, University of Maryland, Baltimore, MD, ⁷Medicine, Montefiore Medical Center, Abdominal Transplant Program, Albert Einstein College of Medicine,, NYC, NY
*Purpose: Transplant glomerulopathy (TG) develops through multiple mechanisms including donor-specific antibodies, T cells and innate immunity. We investigate the role of circulating small RNAs (sRNAs)…
2021 American Transplant Congress
Genetic versus Self-reported African Ancestry and Kidney Allograft Outcome: Analysis of Two Large Multiethnic Urban Transplant Cohorts
F. Zanoni¹, D. Neugut¹, S. Mohan¹, A. Gharavi¹, B. Keating², K. Kiryluk¹
¹Department of Medicine, Division of Nephrology, Columbia University, New York, NY, ²Department of Surgery, Division of Transplantation, University of Pennsylvania, Philadelphia, PA
*Purpose: African-American (AA) kidney transplant recipients (KTx) have higher risk of rejection and failure. However, it is unknown to what extent the inferior outcomes in…