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ImmunoChip Study Implicates Antigen Presentation to T Cells in Narcolepsy

  • Juliette Faraco
  • , Ling Lin
  • , Birgitte Rahbek Kornum
  • , Eimear E. Kenny
  • , Gosia Trynka
  • , Mali Einen
  • , Tom J. Rico
  • , Peter Lichtner
  • , Yves Dauvilliers
  • , Isabelle Arnulf
  • , Michel Lecendreux
  • , Sirous Javidi
  • , Peter Geisler
  • , Geert Mayer
  • , Fabio Pizza
  • , Francesca Poli
  • , Giuseppe Plazzi
  • , Sebastiaan Overeem
  • , Gert Jan Lammers
  • , David Kemlink
  • Karel Sonka, Sona Nevsimalova, Guy Rouleau, Alex Desautels, Jacques Montplaisir, Birgit Frauscher, Laura Ehrmann, Birgit Högl, Poul Jennum, Patrice Bourgin, Rosa Peraita-Adrados, Alex Iranzo, Claudio Bassetti, Wei Min Chen, Patrick Concannon, Susan D. Thompson, Vincent Damotte, Bertrand Fontaine, Maxime Breban, Christian Gieger, Norman Klopp, Panos Deloukas, Cisca Wijmenga, Joachim Hallmayer, Suna Onengut-Gumuscu, Stephen S. Rich, Juliane Winkelmann, Emmanuel Mignot

Research output: Contribution to journalArticlepeer-review

206 Scopus citations

Abstract

Recent advances in the identification of susceptibility genes and environmental exposures provide broad support for a post-infectious autoimmune basis for narcolepsy/hypocretin (orexin) deficiency. We genotyped loci associated with other autoimmune and inflammatory diseases in 1,886 individuals with hypocretin-deficient narcolepsy and 10,421 controls, all of European ancestry, using a custom genotyping array (ImmunoChip). Three loci located outside the Human Leukocyte Antigen (HLA) region on chromosome 6 were significantly associated with disease risk. In addition to a strong signal in the T cell receptor alpha (TRA@), variants in two additional narcolepsy loci, Cathepsin H (CTSH) and Tumor necrosis factor (ligand) superfamily member 4 (TNFSF4, also called OX40L), attained genome-wide significance. These findings underline the importance of antigen presentation by HLA Class II to T cells in the pathophysiology of this autoimmune disease.

Original languageEnglish
Article numbere1003270
JournalPLoS Genetics
Volume9
Issue number2
DOIs
StatePublished - Feb 2013
Externally publishedYes

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