2021 American Transplant Congress
The Trifecta Study: Calibrating Circulating Donor-Derived Cell-Free DNA at the Time of Indication Biopsies Against the Molecular Phenotype of the Biopsy Reveals a Prominent Association with NK Cell Genes
1Alberta Transplant Applied Genomics Centre, Edmonton, AB, Canada, 2Natera Inc., San Carlos, CA
*Purpose: The international, multicenter, prospective Trifecta study was designed to calibrate dd-cfDNA% measurements in blood at the time of indication biopsy against the molecular characteristics…2021 American Transplant Congress
The Clinical Significance of Preformed Anti-HLA-DQ Donor-specific Antibodies on Allograft Outcomes in Kidney Transplantation
*Purpose: De-novo anti-HLA-DQ donor-specific antibody (DSA) has been identified as a risk factor for late graft dysfunction and graft loss in kidney transplantation (KT). The…2021 American Transplant Congress
CD56dimCD16bright NK Cells from Kidney Transplant Recipients with Antibody-mediated Rejection Display Increased Proliferation, Type-1 Activation and Cytotoxic Profile
*Purpose: CD56dimCD16bright NK cells are highly potent for cytotoxicity through cell-mediated cytotoxicity (CMC), antibody-dependent cell-mediated cytotoxicity (ADCC) and INF-γ production. The contribution of NK cells…2021 American Transplant Congress
Clazakizumab (clz, Anti-il-6 Antibody) Treatment Affects Il-6/il-6r Signaling by Increasing Soluble Gp130 (sgp130) in Hla-sensitized Kidney Transplant Patients (hs Ktx Pts) Treated for Chronic Antibody-mediated Rejection (cabmr)
Cedars-Sinai Medical Center, Cerritos, CA
*Purpose: IL-6 is a pro-inflammatory cytokine responsible for chronic vascular inflammation and a promising target for cABMR modulation. IL-6/sIL-6R complex initiates more pathogenic trans-signaling pathways…2021 American Transplant Congress
Natural Sensitization by Pregnancy, Testing Desensitization Strategies in Female NHPs Across Repeat Mismatches
Duke Transplant Center, Duke University Medical Center, Durham, NC
*Purpose: Women are disproportionately represented in the highly sensitized patient cohort, and HLA-incompatible transplantation is undertaken predominantly in females. However, nonhuman primate (NHP) models to…2021 American Transplant Congress
Antibody-mediated Rejection and Sponge Effect in a Redo Lung Transplant Recipient: A Case Report
Norton Thoracic Institute, St. Joseph's Hospital and Medical Center, Phoenix, AZ
*Purpose: Antibody-mediated rejection (AMR) typically presents with elevated titers of circulating donor specific antibodies (DSA) and increased mean fluorescence intensity (MFI), a surrogate marker for…2021 American Transplant Congress
AT-1501, a Novel and Clinically Applicable CD40L Specific Monoclonal Antibody, Promotes Islet Allograft Survival in Nonhuman Primates
*Purpose: Immune intervention with a CD40L specific monoclonal antibody (mAb, Hu5c8, Biogen) has previously been shown to safely and effectively prevent islet allograft (IA) rejection…2021 American Transplant Congress
Impact of Bacterial Infection on HLA Allosensitization Among Kidney Recipients on the Waitlist
*Purpose: The clinical relevance of HLA allosensitization associated with bacterial infection remains poorly defined. The primary objective of this study is to determine the incidence,…2021 American Transplant Congress
Engineered Human Glomerular Endothelial Cells to Identify Non-hla Antibodies and Decipher Their Pathogenicity After Kidney Transplantation
*Purpose: In kidney transplantation recipients (KTRs), donor-specific antibodies directed against Human Leucocyte Antigens (HLA-DSA) are thought to drive antibody-mediated rejection (AMR) and poor transplant outcome.…2021 American Transplant Congress
Belatacept and Carfilzomib-based Treatment of Active Antibody-mediated Rejection in a Sensitized Nonhuman Primate Model
*Purpose: One third of sensitized, HLA-incompatible transplant recipients experience antibody-mediated rejection (AMR) with limited effective treatment options. We tested a novel treatment strategy for AMR…
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