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Rebollo‐Mesa, I.; Nova‐Lamperti, E.; Mobillo, P.; Runglall, M.; Christakoudi, S.; Norris, S.; Smallcombe, N.; Kamra, Y.; Hilton, R.; Bhandari, S.; Baker, R.; Berglund, D.; Carr, S.; Game, D.; Griffin, S.; Kalra, P. A.; Lewis, R.; Mark, P. B.; Marks, S.; Macphee, I.; McKane, W.; Mohaupt, M. G.; Pararajasingam, R.; Kon, S. P.; Serón, D.; Sinha, M. D.; Tucker, B.; Viklický, O.; Lechler, R. I.; Lord, G. M.; Hernandez‐Fuentes, M. P.
American journal of transplantation, December 2016, Letnik: 16, Številka: 12Journal Article
We and others have previously described signatures of tolerance in kidney transplantation showing the differential expression of B cell–related genes and the relative expansions of B cell subsets. However, in all of these studies, the index group—namely, the tolerant recipients—were not receiving immunosuppression (IS) treatment, unlike the rest of the comparator groups. We aimed to assess the confounding effect of these regimens and develop a novel IS‐independent signature of tolerance. Analyzing gene expression in three independent kidney transplant patient cohorts (232 recipients and 14 tolerant patients), we have established that the expression of the previously reported signature was biased by IS regimens, which also influenced transitional B cells. We have defined and validated a new gene expression signature that is independent of drug effects and also differentiates tolerant patients from healthy controls (cross‐validated area under the receiver operating characteristic curve AUC = 0.81). In a prospective cohort, we have demonstrated that the new signature remained stable before and after steroid withdrawal. In addition, we report on a validated and highly accurate gene expression signature that can be reliably used to identify patients suitable for IS reduction (approximately 12% of stable patients), irrespective of the IS drugs they are receiving. Only a similar approach will make the conduct of pilot clinical trials for IS minimization safe and hence allow critical improvements in kidney posttransplant management. The relationship between B cell gene expression and transplantation tolerance is confounded by the effects of immunosuppressive drugs, and correcting for this effect on gene expression is possible, exposing an equally accurate signature of tolerance. See page 3320 for Markmann's editorial.
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JCR | SNIP | JCR | SNIP | JCR | SNIP | JCR | SNIP |
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Vir: Osebne bibliografije
in: SICRIS
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