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Article Dans Une Revue SLEEP Année : 2016

Narcolepsy-Associated HLA Class I Alleles Implicate Cell-Mediated Cytotoxicity

Mehdi Tafti
  • Fonction : Auteur
Gert Lammers
Geert Mayer
Jacek Nowak
  • Fonction : Auteur
Corinne Pfister
  • Fonction : Auteur
Peter Eberhard
  • Fonction : Auteur
Roland Liblau
Aleksandra Wierzbicka
  • Fonction : Auteur
Peter Geisler
  • Fonction : Auteur
Claudio Bassetti
Johannes Mathis
  • Fonction : Auteur
Michel Lecendreux
Ramin Khatami
Raphaël Heinzer
  • Fonction : Auteur
José Haba-Rubio
  • Fonction : Auteur
Eva Feketeova
  • Fonction : Auteur
Jean-Marie Tiercy
  • Fonction : Auteur

Résumé

STUDY OBJECTIVES: Narcolepsy with cataplexy is tightly associated with the HLA class II allele DQB1*06:02. Evidence indicates a complex contribution of HLA class II genes to narcolepsy susceptibility with a recent independent association with HLA-DPB1. The cause of narcolepsy is supposed be an autoimmune attack against hypocretin-producing neurons. Despite the strong association with HLA class II, there is no evidence for CD4+ T-cell-mediated mechanism in narcolepsy. Since neurons express class I and not class II molecules, the final effector immune cells involved might include class I-restricted CD8+ T-cells. METHODS: HLA class I (A, B, and C) and II (DQB1) genotypes were analyzed in 944 European narcolepsy with cataplexy patients and in 4,043 control subjects matched by country of origin. All patients and controls were DQB1*06:02 positive and class I associations were conditioned on DQB1 alleles. RESULTS: HLA-A*11:01 (OR = 1.49 [1.18-1.87] P = 7.0*10(-4)), C*04:01 (OR = 1.34 [1.10-1.63] P = 3.23*10(-3)), and B*35:01 (OR = 1.46 [1.13-1.89] P = 3.64*10(-3)) were associated with susceptibility to narcolepsy. Analysis of polymorphic class I amino-acids revealed even stronger associations with key antigen-binding residues HLA-A-Tyr(9) (OR = 1.32 [1.15-1.52] P = 6.95*10(-5)) and HLA-C-Ser(11) (OR = 1.34 [1.15-1.57] P = 2.43*10(-4)). CONCLUSIONS: Our findings provide a genetic basis for increased susceptibility to infectious factors or an immune cytotoxic mechanism in narcolepsy, potentially targeting hypocretin neurons.

Dates et versions

hal-01886962 , version 1 (03-10-2018)

Identifiants

Citer

Mehdi Tafti, Gert Lammers, Yves Dauvilliers, Sebastiaan M Overeem, Geert Mayer, et al.. Narcolepsy-Associated HLA Class I Alleles Implicate Cell-Mediated Cytotoxicity. SLEEP, 2016, 39 (3), pp.581 - 587. ⟨10.5665/sleep.5532⟩. ⟨hal-01886962⟩
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