Human STAT3 variants underlie autosomal dominant hyper-IgE syndrome by negative dominance

Takaki Asano, Joëlle Khourieh, Peng Zhang, Franck Rapaport, András N Spaan, Juan Li, Wei-Te Lei, Simon J Pelham, David Hum, Maya Chrabieh, Ji Eun Han, Antoine Guérin, Joseph Mackie, Sudhir Gupta, Biman Saikia, Jamila E I Baghdadi, Ilham Fadil, Aziz Bousfiha, Tanwir Habib, Nico MarrLuckshman Ganeshanandan, Jane Peake, Luke Droney, Andrew Williams, Fatih Celmeli, Nevin Hatipoglu, Tayfun Ozcelik, Capucine Picard, Laurent Abel, Stuart G Tangye, Stéphanie Boisson-Dupuis, Qian Zhang, Anne Puel, Vivien Béziat, Jean-Laurent Casanova*, Bertrand Boisson

*Corresponding author for this work

Research output: Contribution to journalArticleAcademicpeer-review

Abstract

Most patients with autosomal dominant hyper-IgE syndrome (AD-HIES) carry rare heterozygous STAT3 variants. Only six of the 135 in-frame variants reported have been experimentally shown to be dominant negative (DN), and it has been recently suggested that eight out-of-frame variants operate by haploinsufficiency. We experimentally tested these 143 variants, 7 novel out-of-frame variants found in HIES patients, and other STAT3 variants from the general population. Strikingly, all 15 out-of-frame variants were DN via their encoded (1) truncated proteins, (2) neoproteins generated from a translation reinitiation codon, and (3) isoforms from alternative transcripts or a combination thereof. Moreover, 128 of the 135 in-frame variants (95%) were also DN. The patients carrying the seven non-DN STAT3 in-frame variants have not been studied for other genetic etiologies. Finally, none of the variants from the general population tested, including an out-of-frame variant, were DN. Overall, our findings show that heterozygous STAT3 variants, whether in or out of frame, underlie AD-HIES through negative dominance rather than haploinsufficiency.

Original languageEnglish
Article numbere20202592
JournalJournal of Experimental Medicine
Volume218
Issue number8
DOIs
Publication statusPublished - 2 Aug 2021
Externally publishedYes

Keywords

  • Adolescent
  • Adult
  • Alleles
  • Alternative Splicing/genetics
  • Child
  • Child, Preschool
  • Codon, Nonsense/genetics
  • Evolution, Molecular
  • Family
  • Female
  • Frameshift Mutation/genetics
  • Genes, Dominant
  • Genetics, Population
  • HEK293 Cells
  • Humans
  • Infant
  • Infant, Newborn
  • Job Syndrome/genetics
  • Male
  • Middle Aged
  • Mutation/genetics
  • Pedigree
  • Protein Biosynthesis
  • RNA, Messenger/genetics
  • STAT3 Transcription Factor/genetics

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