Cited by 62Congenital gastrointestinal and neural anomaliesGenomic variations and chromosomal abnormalitiesIntestinal Malrotation and Obstruction Disorders

Copy number variants in candidate genes are genetic modifiers of Hirschsprung disease

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Jiang, Qian, Ho, Yen-Yi, Hao, Li, Nichols Berrios, Courtney, Chakravarti, Aravinda·2011·PLoS ONE

Abstract

Hirschsprung disease (HSCR) is a neurocristopathy characterized by absence of intramural ganglion cells along variable lengths of the gastrointestinal tract. The HSCR phenotype is highly variable with respect to gender, length of aganglionosis, familiality and the presence of additional anomalies. By molecular genetic analysis, a minimum of 11 neuro-developmental genes (RET, GDNF, NRTN, SOX10, EDNRB, EDN3, ECE1, ZFHX1B, PHOX2B, KIAA1279, TCF4) are known to harbor rare, high-penetrance mutations that confer a large risk to the bearer. In addition, two other genes (RET, NRG1) harbor common, low-penetrance polymorphisms that contribute only partially to risk and can act as genetic modifiers. To broaden this search, we examined whether a set of 67 proven and candidate HSCR genes harbored additional modifier alleles. In this pilot study, we utilized a custom-designed array CGH with ∼33,000 test probes at an average resolution of ∼185 bp to detect gene-sized or smaller copy number variants (CNVs) within these 67 genes in 18 heterogeneous HSCR patients. Using stringent criteria, we identified CNVs at three loci (MAPK10, ZFHX1B, SOX2) that are novel, involve regulatory and coding sequences of neuro-developmental genes, and show association with HSCR in combination with other congenital anomalies. Additional CNVs are observed under relaxed criteria. Our research suggests a role for CNVs in HSCR and, importantly, emphasizes the role of variation in regulatory sequences. A much larger study will be necessary both for replication and for identifying the full spectrum of small CNV effects.

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  • Quite a few genes associated with selective sweeps in AMH examined here (among them RET, ZEB2, and SLIT2) have been linked to Hirschsprung disease.

    “Quite a few genes associated with selective sweeps in AMH examined here (among them, RET, ZEB2, and SLIT2) have been linked to the disease [81, 82].”

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Authors
Jiang, Q., Ho, Y.-Y., Hao, L., Nichols Berrios, C., & Chakravarti, A.
Affiliations
Johns Hopkins University (US)
Corresponding author
Chakravarti, Aravinda
Venue
PLoS ONE
Published
2011-06-21
Volume
6
Issue
6
Pages
e21219
ISSN
1932-6203 (ISSN-L)
OpenAlex
W2024091637
Cited by
62
References
41
Citations by year
2026: 2 · 2025: 1 · 2024: 1 · 2022: 3 · 2021: 4 · 2020: 4 · 2019: 5 · 2018: 2 · 2017: 10 · 2016: 7 · 2015: 4 · 2014: 3 · 2013: 7 · 2012: 8
FWCI
6.21
Type
journal article
Language
en
Open access
Locations
  • PLoS ONE (publishedVersion, cc-by)
  • PubMed Central (publishedVersion, cc-by)
  • PubMed (publishedVersion)
  • Scholar Commons (University of South Carolina) (submittedVersion, cc-by)
  • DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion, cc-by-sa)
Funders
  • National Institutes of Health (HD28088)
  • Eunice Kennedy Shriver National Institute of Child Health and Human Development (R37 HD28088, R37HD028088)
Topics
  • Health Sciences › Medicine › Surgery › Congenital gastrointestinal and neural anomalies
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Genetics › Genomic variations and chromosomal abnormalities
  • Health Sciences › Medicine › Surgery › Intestinal Malrotation and Obstruction Disorders
Keywords
Hirschsprung disease, copy number variation, genetic modifiers, candidate genes, neurocristopathy, aganglionosis, MAPK10, ZEB2, SOX2, congenital malformations, RET, neuregulin-1, array comparative genomic hybridization
MeSH terms
Zinc Finger E-box Binding Homeobox 2, Female, Hirschsprung Disease, Humans, Infant, Newborn, Male, Phenotype, Repressor Proteins, Homeodomain Proteins, Mitogen-Activated Protein Kinase 10, Comparative Genomic Hybridization, SOXB1 Transcription Factors, DNA Copy Number Variations

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