<p>Pre-transplant screening focuses on the detection of anti-HLA alloantibodies. Previous studies have shown that IFN-γ and IL-21 producing T cells are associated with the development of acute rejection (AR). The aim of this study, was to assess whether pre-transplant donor-reactive T cells and/or B cells are associated with increased rejection risk. Samples from 114 kidney transplant recipients (transplanted between 2010 and 2013) were obtained pre-transplantation. The number of donor-reactive IFN-γ and IL-21 producing cells was analyzed by ELISPOT assay. The presence of donor specific antibodies (DSA) was also determined before transplantation. Numbers of donor-reactive IFN-γ producing cells were similar in patients with or without AR whereas those of IL-21 producing cells were higher in patients with AR (p = 0.03). Significantly more patients with AR [6/30(20%)] had detectable DSA compared to patients without AR [5/84(5.9%), p = 0.03]. Multivariate logistic regression showed that donor age (OR 1.06), pre-transplant DSA (OR 5.61) and positive IL-21 ELISPOT assay (OR 2.77) were independent predictors of an increased risk for the development of AR. Aside from an advanced donor-age and pre-transplant DSA, also pre-transplant donor-reactive IL-21 producing cells are associated with the development of AR after transplantation.</p>

doi.org/10.1038/s41598-021-91967-w, hdl.handle.net/1765/136114
Scientific Reports
Erasmus MC: University Medical Center Rotterdam

A. (Aleixandra) Mendoza Rojas, Teun van Gelder, P. (Ronella) de Kuiper, D. (Derek) Reijerkerk, M.C. (Marian) Clahsen - van Groningen, D.A. (Dennis) Hesselink, … N.M. (Nicole) van Besouw. (2021). Pre-transplant donor-reactive IL-21 producing T cells as a tool to identify an increased risk for acute rejection. Scientific Reports, 11(1). doi:10.1038/s41598-021-91967-w