Articles tagged "Co-stimulation"

2021 American Transplant Congress
IL-10 Signaling in T Cells Modulates Costimulation-independent Activation and is Essential for Transplant Tolerance Induction
M. Iglesias Lozano¹, D. Bibicheff¹, M. Chicco², A. Komin¹, G. Brandacher¹, G. Raimondi¹
¹Plastic Surgery, Johns Hopkins University, Baltimore, MD, ²Frimley Health NHS Foundation Trust, London, United Kingdom
*Purpose: Costimulation blockade (CoB)-based immunotherapy remains a very promising approach for better management of transplant recipients. Understanding the mechanisms that impact the efficacy of CoB…
2021 American Transplant Congress
Combined CD11b/CD40 Blockade is Superior to CD40 Blockade Alone in Prolonging Survival in Pig-to-Nonhuman Primate Renal Xenotransplantation
D. A. Faber¹, B. Lovasik¹, A. Matar¹, C. Breeden¹, S. Kim¹, A. Adams²
¹Surgery, Emory University School of Medicine, Atlanta, GA, ²Surgery, University of Minnesota, Minneapolis, MN
*Purpose: Blockade of the CD40/CD154 pathway is highly effective in preventing rejection in pig-to-nonhuman primate (NHP) xenotransplantation models. Clinical translation of anti-CD154 mAbs, however, has…
2021 American Transplant Congress
Establishing a Linear Program for the Development of Costimulation Resistant T-Cells
D. P. Moris, A. Lucander, A. Kirk
Surgery, Duke, Durham, NC
*Purpose: CD4+CD57+PD1-T-cells are primed effectors capable of mediating belatacept-resistant rejection, however, the developmental program giving rise to these cells has not been elucidated in detail.…
2021 American Transplant Congress
Cognition After Belatacept Conversion (CAB) Trial
W. Asch¹, K. Belfield², V. Do², E. Cohen¹
¹Yale University, New Haven, CT, ²Yale New Haven Hospital, New Haven, CT
*Purpose: Extensive adverse effect profiles including neurotoxicity, manifesting as short-term memory loss, make CNIs less desirable despite their efficacy preventing acute rejection and increasing graft…
2021 American Transplant Congress
Anti-CD272 Antibody (6B2) Generated Foxp3⁺Regulatory T Cells and Suppressed Donor Specific Antibody in Murine Cardiac Transplant Model
Y. Yamamoto¹, M. Uchiyama², K. Uchida³, H. Yagita³, M. Niimi¹
¹Department of Surgery, Teikyo University, Tokyo, Japan, ²Department of Cardiovascular Surgery, Teikyo University, Tokyo, Japan, ³Juntendo University, Tokyo, Japan
*Purpose: The co-inhibitory receptor B and T lymphocyte attenuator (BTLA; CD272) has been implicated in the regulation of autoimmune and may potentially play an important…
2021 American Transplant Congress
Desensitization Using Costimulatory Blockade and Bortezomib to Prevent DSA Formation and Rejection in Reconstructive Transplantation
B. Oh¹, F. Messner², Y. Guo¹, G. Brandacher¹
¹Johns Hopkins University School of Medicine, Baltimore, MD, ²Department of Visceral, Transplant and Thoracic Surgery, University of Innsbruck, Innsbruck, Austria
*Purpose: Sensitization in form of donor-specific antibodies (DSA) and subsequent antibody-mediated rejection constitute some of the greatest risk factors for allograft rejection and long-term graft…
2021 American Transplant Congress
Belatacept Pharmacokinetics in Patients with and without Infection
A. Bickenbach¹, M. McGowan¹, B. Miyagawa², T. Mizuno², A. Shields³, A. Christianson¹, P. West-Thielke⁴, J. Leone⁵, E. Woodle¹, D. Kaufman⁶, A. Wiseman⁷, A. Vinks², R. Alloway¹
¹U Cincinnati, Cincinnati, OH, ²Cincinnati Children's Med Center, Cincinnati, OH, ³Christ Hospital, Cincinnati, OH, ⁴UIC, Chicago, IL, ⁵Tampa Gen, Tampa, FL, ⁶U Wisconsin, Madison, WI, ⁷Centura Transplant, Denver, CO
*Purpose: Two belatacept(BELA) fixed mg/kg dosing regimens, less intense(LI) and more intense(MI) were compared. The LI regimen was approved due to the higher risk profile…
2021 American Transplant Congress
Belatacept Pharmacokinetic Analysis Comparing Belatacept Early Steroid Withdrawal Trial (BEST) with Benefit and Benefit-ext Trials
A. Bickenbach¹, M. McGowan¹, B. Miyagawa², T. Mizuno², A. Shields³, A. Christianson¹, P. West-Thielke⁴, J. Leone⁵, E. Woodle¹, D. Kaufman⁶, A. Wiseman⁷, A. Matas⁸, A. Vinks²
¹U Cincinnati, Cincinnati, OH, ²Cincinnati Childrens Med Center, Cincinnati, OH, ³Christ Hospital, Cincinnati, OH, ⁴UIC, Chicago, IL, ⁵Tampa Gen, Tampa, FL, ⁶U Wisconsin, Madison, WI, ⁷Centura Transplant, Denver, CO, ⁸U Minnesota, Minneapolis, MN
*Purpose: Belatacept(BELA) pharmacokinetic(PK) studies informed dosing in phase 3 studies where fixed mg/kg dosing compared a less intense(LI) and more intense(MI) regimen. LI was preferred…
2021 American Transplant Congress
Belatacept Conversion in Elderly Renal Transplant Recipients
M. Durst¹, D. Felix¹, M. Jorgenson¹, J. Descourouez¹, B. C. Astor², D. Mandelbrot²
¹UW Health, Madison, WI, ²University of Wisconsin School of Medicine and Public Health, Madison, WI
*Purpose: Describe the impact of conversion from a calcineurin inhibitor (CNI) based immunosuppressive regimen to belatacept in elderly renal transplant recipients.*Methods: Adult renal transplant patients…
2021 American Transplant Congress
Infectious Complications After Belatacept Conversion in Kidney Transplant
J. E. Marvin¹, D. Amenyedor¹, M. M. Azar², K. Belfield¹, V. Do¹, R. Formica³, E. Cohen¹
¹Pharmacy, Yale New Haven Hospital, New Haven, CT, ²Section of Infectious Diseases, Yale School of Medicine, New Haven, CT, ³Section of Nephrology, Yale School of Medicine, New Haven, CT
*Purpose: Tacrolimus (tac), a calcineurin inhibitor, is associated with multiple adverse effects when used for immunosuppression following kidney transplant (KT). Belatacept (bela) is a monoclonal…