Prediction system for risk of allograft loss in patients receiving kidney transplants: international derivation and validation study
The team of the Paris Transplant Group has been awarded at the ESOT 2019 congress in Copenhagen for its many contribution in the field of transplantation.
The Prize is given to a single Institution having submitted at least 5 abstracts for the event and granted with the best score. The Paris Transplant Group is very pleased to won this European award twice in a row.
Check out the contribution submitted by the Group on the ESOT website: esotcongress.org.
Disparities in Acceptance of Deceased Donor Kidneys Between the United States and France and Estimated Effects of Increased US Acceptance
Using a new approach based on validated analytical methods and computer simulations, this work revealed that French transplant centres are much more likely to transplant kidneys from older donors than their American counterparts, and that this effectively increases the number of patients transplanted.
During the event, a specific symposium is held for the EU Train-ESOT that highlights the methodological and statistical risks clinical researchers can face in the field of transplantation. Carmen Lefaucheur, Olivier Aubert, Alexandre Loupy, Yassine Bouatou, Dany Anglicheau and Christophe Legendre are invited to speak during this event to present the future of patient care in transplantation.
Check the poster submitted by Marc Raynaud here.
You can follow the event through social media with the hashtag #ESOT2019 and @ParisTxGroup.
Archetype Analysis Identifies Distinct Profiles in Renal Transplant Recipients with Transplant Glomerulopathy Associated with Allograft Survival
New research conducted by the Paris Translational Research Center for Organ Transplantation team could help clinicians determine which patients will have a disease that usually occurs after a kidney transplant and which are at high risk of transplant failure. The results are published today in the prestigious Journal of the American Society of Nephrology (JASN).
Transplant glomerulopathy was first described and characterized 50 years ago. It is a disease associated with the loss of a kidney transplant and common after a transplant. It affects the functional units (i. e. glomeruli) of the transplanted kidney. There is currently no treatment for this heterogeneous disease.
Circulating donor-specific anti-HLA antibodies are a major factor in premature and accelerated allograft fibrosis.
Addressing the causes of kidney allograft-accelerated aging is an important challenge for improving long-term transplant outcomes. Here we investigated the role of circulating donor-specific anti-HLA antibodies (HLA-DSAs) in the development and the progression of kidney allograft fibrosis with inclusion of traditional risk factors for allograft fibrosis. We prospectively enrolled 1539 consecutive kidney recipients transplanted in two centers and assessed interstitial fibrosis and tubular atrophy (IF/TA) in biopsies performed at one year post-transplantation. The HLA-DSAs and all traditional determinants of IF/TA were recorded at transplantation and within the first year post-transplantation, including histological diagnoses in 2260 "for cause" biopsies. This identified 498 (32%) patients with severe IF/TA (Banff IF/TA grade 2 or more). HLA-DSAs were significantly associated with severe IF/TA (adjusted odds ratio, 1.53; 95% confidence interval 1.16-2.01) after including 37 determinants. HLA-DSAs remained significantly associated with severe IF/TA in patients without antibody-mediated rejection (adjusted odds ratio 1.54; 1.11-2.14). HLA-DSAs were the primary contributor, being involved in 11% of cases, while T cell-mediated rejection, calcineurin-inhibitor toxicity, acute tubular necrosis, pyelonephritis, and BK virus-associated nephropathy were involved in 9%, 8%, 6%, 5%, and 4% of cases, respectively. One hundred fifty-four patients with HLA-DSA-associated severe IF/TA showed significantly increased microvascular inflammation, transplant glomerulopathy, C4d deposition in capillaries, and decreased allograft survival compared to 344 patients with severe IF/TA without HLA-DSAs. Three hundred seventy-eight patients with post-transplant HLA-DSAs exhibited significantly accelerated progression of IF/TA compared to 1161 patients without HLA-DSAs in the biopsies performed at one year post-transplant and beyond. Thus, circulating HLA-DSAs are major determinants of premature and accelerated allograft fibrosis acting independently of traditional risk factors and antibody-mediated rejection.
Authors: Gosset C, Viglietti D, Rabant M, Vérine J, Aubert O, Glotz D, Legendre C, Taupin JL, Duong Van-Huyen JP, Loupy A, Lefaucheur C.
Paris Transplant Group
Our global aim is to accelerate the translation of immunological and gene expression discoveries into the clinical field by filling the gap between basic science and applied biomedical researches.