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Identification of a new locus at 16q12 associated with time-to-asthma onset

  • Chloé Sarnowski
  • , Pierre-Emmanuel Sugier
  • , Raquel Granell
  • , Debbie Jarvis
  • , Marie-Hélène Dizier
  • , Markus Ege
  • , Medea Imboden
  • , Catherine Laprise
  • , Elza K. Khusnutdinova
  • , Maxim B. Freidin
  • , William O.C. Cookson
  • , Miriam Moffatt
  • , Mark Lathrop
  • , Valérie Siroux
  • , Ludmila M. Ogorodova
  • , Alexandra S. Karunas
  • , Alan James
  • , Nicole M. Probst-Hensch
  • , Erika von Mutius
  • , Isabelle Pin
  • Manolis Kogevinas, A. John Henderson, Florence Demenais, Emmanuelle Bouzigon

Research output: Contribution to journalArticle (Academic Journal)peer-review

28 Citations (Scopus)

Abstract

Background

Asthma is a heterogeneous disease in which age of onset plays an important role.

Objective

We sought to identify the genetic variants associated with time to asthma onset (TAO).

Methods

We conducted a large-scale meta-analysis of 9 genome-wide association studies of TAO (total of 5462 asthmatic patients with a broad range of age of asthma onset and 8424 control subjects of European ancestry) performed by using survival analysis techniques.

Results

We detected 5 regions associated with TAO at the genome-wide significant level (P < 5 × 10−8). We evidenced a new locus in the 16q12 region (near cylindromatosis turban tumor syndrome gene [CYLD]) and confirmed 4 asthma risk regions: 2q12 (IL-1 receptor–like 1 [IL1RL1]), 6p21 (HLA-DQA1), 9p24 (IL33), and 17q12-q21 (zona pellucida binding protein 2 [ZPBP2]–gasdermin A [GSDMA]). Conditional analyses identified 2 distinct signals at 9p24 (both upstream of IL33) and 17q12-q21 (near ZPBP2 and within GSDMA). Together, these 7 distinct loci explained 6.0% of the variance in TAO. In addition, we showed that genetic variants at 9p24 and 17q12-q21 were strongly associated with an earlier onset of childhood asthma (P ≤ .002), whereas the 16q12 single nucleotide polymorphism was associated with later asthma onset (P = .04). A high burden of disease risk alleles at these loci was associated with earlier age of asthma onset (4 vs 9-12 years, P = 10−4).

Conclusion

The new susceptibility region for TAO at 16q12 harbors variants that correlate with the expression of CYLD and nucleotide-binding oligomerization domain 2 (NOD2), 2 strong candidates for asthma. This study demonstrates that incorporating the variability of age of asthma onset in asthma modeling is a helpful approach in the search for disease susceptibility genes.

Original languageEnglish
Pages (from-to)1071-1080
Number of pages10
JournalJournal of Allergy and Clinical Immunology
Volume138
Issue number4
Early online date6 Apr 2016
DOIs
Publication statusPublished - Oct 2016

Keywords

  • Asthma
  • age-of-onset
  • genetics
  • genome-wide association study
  • survival analysis
  • conditional analysis
  • CYLD
  • NOD2

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