Human SNP links differential outcomes in inflammatory and infectious disease to a FOXO3-regulated pathway

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Abstract

Summary The clinical course and eventual outcome, or prognosis, of complex diseases varies enormously between affected individuals. This variability critically determines the impact a disease has on a patient's life but is very poorly understood. Here, we exploit existing genome-wide association study data to gain insight into the role of genetics in prognosis. We identify a noncoding polymorphism in FOXO3A (rs12212067: T > G) at which the minor (G) allele, despite not being associated with disease susceptibility, is associated with a milder course of Crohn's disease and rheumatoid arthritis and with increased risk of severe malaria. Minor allele carriage is shown to limit inflammatory responses in monocytes via a FOXO3-driven pathway, which through TGFβ1 reduces production of proinflammatory cytokines, including TNFα, and increases production of anti-inflammatory cytokines, including IL-10. Thus, we uncover a shared genetic contribution to prognosis in distinct diseases that operates via a FOXO3-driven pathway modulating inflammatory responses. PaperClip © 2013 The Authors.

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Lee, J. C., Espéli, M., Anderson, C. A., Linterman, M. A., Pocock, J. M., Williams, N. J., … Smith, K. G. C. (2013). Human SNP links differential outcomes in inflammatory and infectious disease to a FOXO3-regulated pathway. Cell, 155(1), 57–69. https://doi.org/10.1016/j.cell.2013.08.034

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