Gain-of-function human STAT1 mutations impair IL-17 immunity and underlie chronic mucocutaneous candidiasis

Luyan Liu, Satoshi Okada, Xiao Fei Kong, Alexandra Y. Kreins, Sophie Cypowyj, Avinash Abhyankar, Julie Toubiana, Yuval Itan, Magali Audry, Patrick Nitschke, Cécile Masson, Beata Toth, Jérome Flatot, Mélanie Migaud, Maya Chrabieh, Tatiana Kochetkov, Alexandre Bolze, Alessandro Borghesi, Antoine Toulon, Julia HillerStefanie Eyerich, Kilian Eyerich, Vera Gulácsy, Ludmyla Chernyshova, Viktor Chernyshov, Anastasia Bondarenko, Rosa María Cortés Grimaldo, Lizbeth Blancas-Galicia, Ileana Maria Madrigal Beas, Joachim Roesler, Klaus Magdorf, Dan Engelhard, Caroline Thumerelle, Pierre Régis Burgel, Miriam Hoernes, Barbara Drexel, Reinhard Seger, Theresia Kusuma, Annette F. Jansson, Julie Sawalle-Belohradsky, Bernd Belohradsky, Emmanuelle Jouanguy, Jacinta Bustamante, Mélanie Bué, Nathan Karin, Gizi Wildbaum, Christine Bodemer, Olivier Lortholary, Alain Fischer, Stéphane Blanche, Saleh Al-Muhsen, Janine Reichenbach, Masao Kobayashi, Francisco Espinosa Rosales, Carlos Torres Lozano, Sara Sebnem Kilic, Matias Oleastro, Amos Etzioni, Claudia Traidl-Hoffmann, Ellen D. Renner, Laurent Abel, Capucine Picard, László Maródi, Stéphanie Boisson-Dupuis, Anne Puel, Jean Laurent Casanova

Research output: Contribution to journalArticlepeer-review

623 Scopus citations


Chronic mucocutaneous candidiasis disease (CMCD) may be caused by autosomal dominant (AD) IL-17F deficiency or autosomal recessive (AR) IL-17RA deficiency. Here, using whole-exome sequencing, we identified heterozygous germline mutations in STAT1 in 47 patients from 20 kindreds with AD CMCD. Previously described heterozygous STAT1 mutant alleles are loss-of-function and cause AD predisposition to mycobacterial disease caused by impaired STAT1-dependent cellular responses to IFN-γ. Other loss-of-function STAT1 alleles cause AR predisposition to intracellular bacterial and viral diseases, caused by impaired STAT1-dependent responses to IFN-α/β, IFN-γ, IFN-λ, and IL-27. In contrast, the 12 AD CMCD-inducing STAT1 mutant alleles described here are gain-of-function and increase STAT1-dependent cellular responses to these cytokines, and to cytokines that predominantly activate STAT3, such as IL-6 and IL-21. All of these mutations affect the coiled-coil domain and impair the nuclear dephosphorylation of activated STAT1, accounting for their gain-of-function and dominance. Stronger cellular responses to the STAT1-dependent IL-17 inhibitors IFN-α/β, IFN-γ, and IL-27, and stronger STAT1 activation in response to the STAT3-dependent IL-17 inducers IL-6 and IL-21, hinder the development of T cells producing IL-17A, IL-17F, and IL-22. Gain-of-function STAT1 alleles therefore cause AD CMCD by impairing IL-17 immunity.

Original languageEnglish (US)
Pages (from-to)1635-1648
Number of pages14
JournalJournal of Experimental Medicine
Issue number18
StatePublished - Aug 1 2011
Externally publishedYes

ASJC Scopus subject areas

  • Immunology and Allergy
  • Immunology


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