Cited by 1,957Genomics and Rare DiseasesGenetic Associations and EpidemiologyConnective tissue disorders research

Exome sequencing identifies the cause of a mendelian disorder

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Ng, Sarah B, Buckingham, Kati J, Lee, Choli, Bigham, Abigail W, Tabor, Holly K, Dent, Karin M, Huff, Chad D, Shannon, Paul T +4 more·2010·Nature Genetics

Abstract

We demonstrate the first successful application of exome sequencing to discover the gene for a rare mendelian disorder of unknown cause, Miller syndrome (MIM%263750). For four affected individuals in three independent kindreds, we captured and sequenced coding regions to a mean coverage of 40x and sufficient depth to call variants at approximately 97% of each targeted exome. Filtering against public SNP databases and eight HapMap exomes for genes with two previously unknown variants in each of the four individuals identified a single candidate gene, DHODH, which encodes a key enzyme in the pyrimidine de novo biosynthesis pathway. Sanger sequencing confirmed the presence of DHODH mutations in three additional families with Miller syndrome. Exome sequencing of a small number of unrelated affected individuals is a powerful, efficient strategy for identifying the genes underlying rare mendelian disorders and will likely transform the genetic analysis of monogenic traits.

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  • Target capture and next-generation sequencing have shown efficacy and, recently, scalability for resequencing human genomes and exomes.

    “Target capture and next-generation sequencing (NGS) have shown efficacy and, recently, scalability for resequencing human genomes and exomes, providing an alternative potential paradigm for comprehensive carrier testing (15–22).”

    From Carrier testing for severe childhood recessive diseases by next-generation sequencing (2011) · cites this paper as [19]

    Experimental — accuracy not yet measured
  • In genome research, an average sequence coverage depth of 30-fold has been accepted as sufficient for detecting single-nucleotide polymorphisms and nucleotide insertions or deletions.

    “In genome research, an average depth of sequence coverage of 30-fold has been accepted as sufficient for single-nucleotide polymorphism (SNP) and nucleotide insertion or deletion (indel) detection (15–22).”

    From Carrier testing for severe childhood recessive diseases by next-generation sequencing (2011) · cites this paper as [19]

    The Methods (Read mapping and variant analysis; page unavailable) use a ≥8× coverage cutoff for sequence calls and describe coding-indel identification, but do not assess whether 30-fold average coverage is sufficient. The Discussion (page unavailable) notes that low coverage can cause missed variant calls; searches for 30-fold coverage and its sufficiency found no statement of the claimed standard. (LLM, conf=0.76)

    Experimental — accuracy not yet measured
  • Two recent papers suggest that leveraging functional annotations and computational methods for predicting the consequences of specific rare variants can be used to great advantage in identifying disease-predisposing variants, at least for rare monogenic conditions.

    “In fact, two recent papers23, 36 suggest that leveraging functional annotations and computational methods for predicting the consequences of specific rare variants can be used to great advantage in the identification of disease-predisposing variants, at least for rare monogenic conditions.”

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  1. [16]Genee E Une forme extensive de dysostose mandibulo-faciale J Genet Hum 17 45 52 1969 5808539

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Authors
Ng, S. B., Buckingham, K. J., Lee, C., Bigham, A. W., Tabor, H. K., Dent, K. M., Huff, C. D., Shannon, P. T., Jabs, E. W., Nickerson, D. A., Shendure, J., & Bamshad, M. J.
Affiliations
  • University of Washington (US)
  • Seattle Children's Hospital (US)
  • University of Utah (US)
  • Institute for Systems Biology (US)
  • Johns Hopkins University (US)
Corresponding author
  • Shendure, Jay
  • Bamshad, Michael J
Venue
Nature Genetics
Published
2009-11-13
Volume
42
Issue
1
Pages
30-35
ISSN
  • 1061-4036 (ISSN-L)
  • 1546-1718
OpenAlex
W2036210716
Cited by
1,957
References
32
Citations by year
2026: 25 · 2025: 30 · 2024: 31 · 2023: 40 · 2022: 67 · 2021: 64 · 2020: 63 · 2019: 80 · 2018: 94 · 2017: 109 · 2016: 128 · 2015: 156 · 2014: 202 · 2013: 230 · 2012: 225
FWCI
123.43
Type
journal article
Language
en
Open access
Locations
  • Nature Genetics (publishedVersion)
  • PubMed (publishedVersion)
  • PubMed Central (acceptedVersion)
Funders
  • Washington Research Foundation
  • National Institutes of Health
  • National Heart, Lung, and Blood Institute (R01HL094976)
  • National Human Genome Research Institute (R21HG004749)
  • National Institute of Child Health and Human Development
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Genetics › Genomics and Rare Diseases
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Genetics › Genetic Associations and Epidemiology
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Genetics › Connective tissue disorders research
Keywords
Miller syndrome, dihydroorotate dehydrogenase, monogenic disorders, exome resequencing, rare genetic disorders, candidate gene identification, monogenic traits
MeSH terms
Abnormalities, Multiple, Dihydroorotate Dehydrogenase, Amino Acid Sequence, Exons, Family Health, Female, Humans, Male, Mandibulofacial Dysostosis, Molecular Sequence Data, Mutation, Syndrome, Open Reading Frames, Sequence Homology, Amino Acid, Sequence Analysis, DNA, Genetic Predisposition to Disease, Oxidoreductases Acting on CH-CH Group Donors

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