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RESEARCH PRODUCT
Exome chip association study excluded the involvement of rare coding variants with large effect sizes in the etiology of anorectal malformations
Erwin BrosensHeiko ReutterHan G. BrunnerSophie A. C. HolsinkCharlotte H. W. WijersEkkehart JenetzkyRomy Van De PutteMaria-mercè Garcia-barcelóNel RoeleveldMarloes SteehouwerPaul M. A. BroensRobert M.w. HofstraPaul K.h. TamCarlo MarcelisLambertus A. KiemeneyNadine ZwinkSita H. VermeulenMaartje Van De VorstAlice S. BrooksAnnelies De KleinTessel E. GaleslootCornelius E. J. SlootsMichael LudwigIvo De BlaauwLoes F.m. Van Der ZandenMarkus HombergIris A.l.m. Van RooijRocio Acuna-hidalgosubject
MaleANOMALIESCandidate geneHeredityEtiologyMolecular biologylnfectious Diseases and Global Health Radboud Institute for Molecular Life Sciences [Radboudumc 4]Pathology and Laboratory MedicineSequencing techniquesEXCLUSIONMedicine and Health SciencesExomeDNA sequencingExomeOligonucleotide Array Sequence AnalysisGeneticsSanger sequencingRISKeducation.field_of_studyMultidisciplinaryQRCongenital AnomaliesAnorectal MalformationsGenetic MappingReconstructive and regenerative medicine Radboud Institute for Molecular Life Sciences [Radboudumc 10]Urological cancers Radboud Institute for Health Sciences [Radboudumc 15]OBESITYsymbolsEngineering and TechnologyMedicineFemaleRare cancers Radboud Institute for Health Sciences [Radboudumc 9]Research ArticleAdultQuality ControlCANDIDATE GENESciencePopulationVariant GenotypesBiologysymbols.namesakeSigns and SymptomsDiagnostic MedicineIndustrial EngineeringBIRTH-DEFECTSGeneticsCongenital DisordersHumansAlleleeducationGeneAllelesFistulasNeurodevelopmental disorders Donders Center for Medical Neuroscience [Radboudumc 7]Dideoxy DNA sequencingGenetic VariationBiology and Life SciencesHuman GeneticsReconstructive and regenerative medicine Radboud Institute for Health Sciences [Radboudumc 10]Research and analysis methodsMolecular biology techniquesBonferroni correctionFGF10Genetic LociREGISTRYEtiologyRenal disorders Radboud Institute for Health Sciences [Radboudumc 11]description
IntroductionAnorectal malformations (ARM) are rare congenital malformations, resulting from disturbed hindgut development. A genetic etiology has been suggested, but evidence for the involvement of specific genes is scarce. We evaluated the contribution of rare and low-frequency coding variants in ARM etiology, assuming a multifactorial model.MethodsWe analyzed 568 Caucasian ARM patients and 1,860 population-based controls using the Illumina Human Exome Beadchip array, which contains >240,000 rare and low-frequency coding variants. GenomeStudio clustering and calling was followed by re-calling of 'no-calls' using zCall for patients and controls simultaneously. Single variant and gene-based analyses were performed to identify statistically significant associations, applying Bonferroni correction. Following an extra quality control step, candidate variants were selected for validation using Sanger sequencing.ResultsWhen we applied a MAF of >= 1.0%, no variants or genes showed statistically significant associations with ARM. Using a MAF cut-off at 0.4%, 13 variants initially reached statistical significance, but had to be discarded upon further inspection: ten variants represented calling errors of the software, while the minor alleles of the remaining three variants were not confirmed by Sanger sequencing.ConclusionOur results show that rare and low-frequency coding variants with large effect sizes, present on the exome chip do not contribute to ARM etiology.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2019-05-28 | PLoS One |