Cited by 104Genomic variations and chromosomal abnormalitiesChromosomal and Genetic VariationsGenome Rearrangement Algorithms

Increased mutation and gene conversion within human segmental duplications

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Vollger, Mitchell R., Dishuck, Philip C., Harvey, William T., DeWitt, William S., Guitart, Xavi, Goldberg, Michael E., Rozanski, Allison N., Lucas, Julian +123 more·2023·Nature

Abstract

Single-nucleotide variants (SNVs) in segmental duplications (SDs) have not been systematically assessed because of the limitations of mapping short-read sequencing data 1,2 . Here we constructed 1:1 unambiguous alignments spanning high-identity SDs across 102 human haplotypes and compared the pattern of SNVs between unique and duplicated regions 3,4 . We find that human SNVs are elevated 60% in SDs compared to unique regions and estimate that at least 23% of this increase is due to interlocus gene conversion (IGC) with up to 4.3 megabase pairs of SD sequence converted on average per human haplotype. We develop a genome-wide map of IGC donors and acceptors, including 498 acceptor and 454 donor hotspots affecting the exons of about 800 protein-coding genes. These include 171 genes that have ‘relocated’ on average 1.61 megabase pairs in a subset of human haplotypes. Using a coalescent framework, we show that SD regions are slightly evolutionarily older when compared to unique sequences, probably owing to IGC. SNVs in SDs, however, show a distinct mutational spectrum: a 27.1% increase in transversions that convert cytosine to guanine or the reverse across all triplet contexts and a 7.6% reduction in the frequency of CpG-associated mutations when compared to unique DNA. We reason that these distinct mutational properties help to maintain an overall higher GC content of SD DNA compared to that of unique DNA, probably driven by GC-biased conversion between paralogous sequences 5,6 .

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  • For KCNE1, calls and frequencies are provided in a 40 kb region spanning 3 exons that could not be previously assessed owing to a false duplication in GRCh38.

    “Moreover, for KCNE1, we provide calls and frequencies in a 40 kb region, spanning 3 exons, that could not be previously assessed owing to the presence of a false duplication in GRCh38 (Supplementary Fig. 19; see also an associated article53 for genome-wide analysis of interlocus gene conversion).”

    From A draft human pangenome reference. (2023) · cites this paper as [53]

  • Highly accurate haplotype-resolved assemblies enabled access to previously inaccessible regions, highlighting new forms of genetic variation and providing new insights into mutational processes such as interlocus gene conversion.

    “Although the focus of this effort was to build a reference resource, highly accurate haplotype-resolved assemblies enabled us to access previously inaccessible regions, highlighting new forms of genetic variation and providing new insights into mutational processes such as interlocus gene conversion53.”

    From A draft human pangenome reference. (2023) · cites this paper as [53]

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Authors
Vollger, M. R., Dishuck, P. C., Harvey, W. T., DeWitt, W. S., Guitart, X., Goldberg, M. E., Rozanski, A. N., Lucas, J., Asri, M., Human Pangenome Reference Consortium, Abel, H. J., Antonacci-Fulton, L. L., Baid, G., Baker, C. A., Belyaeva, A., Billis, K., Bourque, G., Buonaiuto, S., Carroll, A., Chaisson, M. J. P., Chang, P.-C., Chang, X. H., Cheng, H., Chu, J., Cody, S., Colonna, V., Cook, D. E., Cook-Deegan, R. M., Cornejo, O. E., Diekhans, M., Doerr, D., Ebert, P., Ebler, J., Eizenga, J. M., Fairley, S., Fedrigo, O., Felsenfeld, A. L., Feng, X., Fischer, C., Flicek, P., Formenti, G., Frankish, A., Fulton, R. S., Gao, Y., Garg, S., Garrison, E., Garrison, N. A., Giron, C. G., Green, R. E., Groza, C., Guarracino, A., Haggerty, L., Hall, I. M., Haukness, M., Haussler, D., Heumos, S., Hickey, G., Hourlier, T., Howe, K., Jain, M., Jarvis, E. D., Ji, H. P., Kenny, E. E., Koenig, B. A., Kolesnikov, A., Korbel, J. O., Kordosky, J., Koren, S., Lee, H., Li, H., Liao, W.-W., Lu, S., Lu, T.-Y., Lucas, J. K., Magalhães, H., Marco-Sola, S., Marijon, P., Markello, C., Marschall, T., Martin, F. J., McCartney, A., McDaniel, J., Miga, K. H., Mitchell, M. W., Monlong, J., Mountcastle, J., Mwaniki, M. N., Nattestad, M., Novak, A. M., Nurk, S., Olsen, H. E., Olson, N. D., Paten, B., Pesout, T., Phillippy, A. M., Popejoy, A. B., Prins, P., Puiu, D., Rautiainen, M., Regier, A. A., Rhie, A., Sacco, S., Sanders, A. D., Schneider, V. A., Schultz, B. I., Shafin, K., Sibbesen, J. A., Sirén, J., Smith, M. W., Sofia, H. J., Abou Tayoun, A. N., Thibaud-Nissen, F., Tomlinson, C., Tricomi, F. F., Villani, F., Vollger, M. R., Wagner, J., Walenz, B., Wang, T., Wood, J. M. D., Zimin, A. V., Zook, J. M., Munson, K. M., Lewis, A. P., Hoekzema, K., Logsdon, G. A., Porubsky, D., Paten, B., Harris, K., Hsieh, P., & Eichler, E. E.
Affiliations
  • University of Washington (US)
  • University of California, Santa Cruz (US)
  • Washington University in St. Louis (US)
  • Google (United States) (US)
  • European Bioinformatics Institute (GB)
  • Kyoto University (JP)
  • Institute of Genetics and Biophysics (IT)
  • University of Southern California (US)
  • Harvard University (US)
  • Dana-Farber Cancer Institute (US)
  • University of Tennessee Health Science Center (US)
  • Washington Center (US)
  • Heinrich Heine University Düsseldorf (DE)
  • Rockefeller University (US)
  • National Institutes of Health (US)
  • Children's Hospital of Philadelphia (US)
  • Novo Nordisk Foundation (DK)
  • University of California, Los Angeles (US)
  • McGill University (CA)
  • Yale University (US)
  • Howard Hughes Medical Institute (US)
  • Quantitative Biology Center (DE)
  • Wellcome Sanger Institute (GB)
  • Northeastern University (US)
  • Stanford Medicine (US)
  • Icahn School of Medicine at Mount Sinai (US)
  • University of California, San Francisco (US)
  • National Institute of Standards and Technology (US)
  • Coriell Institute For Medical Research (US)
  • University of Pisa (IT)
  • University of California, Davis (US)
  • Johns Hopkins University (US)
  • Max Delbrück Center (DE)
  • University of Copenhagen (DK)
Corresponding author
Eichler, Evan E.
ORCID
Venue
Nature
Published
2023-05-10
Volume
617
Issue
7960
Pages
325-334
ISSN
  • 0028-0836 (ISSN-L)
  • 1476-4687
OpenAlex
W4376133061
Cited by
104
References
76
Citations by year
2026: 29 · 2025: 26 · 2024: 35 · 2023: 14
FWCI
17.07
Type
journal article
Language
en
Open access
Locations
  • Nature (publishedVersion, cc-by)
  • PubMed Central (publishedVersion, cc-by)
  • PubMed (publishedVersion)
  • MDC Repository (Max-Delbrueck-Center for Molecular Medicine) (acceptedVersion)
  • RePEc: Research Papers in Economics (submittedVersion)
  • eScholarship (California Digital Library) (submittedVersion, cc-by)
  • Technical University of Denmark, DTU Orbit (Technical University of Denmark, DTU) (submittedVersion, cc-by)
  • UPCommons institutional repository (Universitat Politècnica de Catalunya) (submittedVersion, cc-by-nc-nd)
Funders
  • Howard Hughes Medical Institute
  • James S. McDonnell Foundation
  • National Institutes of Health (5r00hg011041-04)
  • National Human Genome Research Institute (R01HG010485, U01HG010973, U01HG010971, R00 HG011041, K99HG011041, R01HG002385, U24HG007234, U24HG010262)
  • National Institute of General Medical Sciences (R35GM133428, T32GM007454)
  • National Institute of Allergy and Infectious Diseases (F31AI150163)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Genetics › Genomic variations and chromosomal abnormalities
  • Life Sciences › Agricultural and Biological Sciences › Plant Science › Chromosomal and Genetic Variations
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Genetics › Genome Rearrangement Algorithms
Keywords
segmental duplication, single nucleotide variants, mutation spectrum, transversions, GC content, paralogs, coalescent analysis, genome rearrangement
MeSH terms
Cytosine, Exons, Gene Conversion, Guanine, Haplotypes, Humans, Mutation, Genome, Human, CpG Islands, Polymorphism, Single Nucleotide, Segmental Duplications, Genomic

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