Evidence map›Paper›PMID 27436009›Full record

ArticleMolecular biology and evolution2016

Excess of Deleterious Mutations around HLA Genes Reveals Evolutionary Cost of Balancing Selection.

Tobias L Lenz, Victor Spirin, Daniel M Jordan, Shamil R Sunyaev

Abstract read
In one paragraph

Article in Molecular biology and evolution, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 41 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
41citing papers in PubMed, 1 pooled it
–field-weighted citation impact
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

41 citing papers in PubMed, 1 synthesis or guideline pooled it.

  1. Pooled it
  2. Review
  3. Article
  4. Article
  5. Article
  6. Article
  7. Article
  8. Article
  9. Complete sequencing of ape genomes.bioRxiv : the preprint server for biology · 2024
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  10. Article
  11. Article
  12. Narrative Review Explaining the Role ofInfectious disease reports · 2024
    Review
  13. Article
  14. HLA Genes: A Hallmark of Functional Genetic Variation and Complex Evolution.Methods in molecular biology (Clifton, N.J.) · 2024
    Review
  15. Article
  16. Article
  17. JTK: targeted diploid genome assembler.Bioinformatics (Oxford, England) · 2023
    Article
  18. Article
  19. Mapping the dynamic genetic regulatory architecture ofmedRxiv : the preprint server for health sciences · 2023
    Article
  20. Article
4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

4 authors.

Tobias L LenzDivision of Genetics, Department of Medicine, Brigham and Women's Hospital, Harvard Medical School Evolutionary Immunogenomics, Department of Evolutionary Ecology, Max Planck Institute for Evolutionary Biology, Plön, Germany lenz@post.harvard.edu ssunyaev@rics.bwh.harvard.edu.
Victor SpirinDivision of Genetics, Department of Medicine, Brigham and Women's Hospital, Harvard Medical School.
Daniel M JordanDivision of Genetics, Department of Medicine, Brigham and Women's Hospital, Harvard Medical School.
Shamil R SunyaevDivision of Genetics, Department of Medicine, Brigham and Women's Hospital, Harvard Medical School Program in Medical and Population Genetics, The Broad Institute, Cambridge, MA lenz@post.harvard.edu ssunyaev@rics.bwh.harvard.edu.

Funding

Statistical methods for studies of rare variantsR01MH101244 · NIMH · HARVARD MEDICAL SCHOOL · PI Benjamin Michael Neale, ALKES L PRICE · 2013 to 2026
$9.4M
New Methods and Enhanced Software for Predicting Functional SNPsR01GM078598 · NIGMS · BRIGHAM AND WOMEN'S HOSPITAL · PI SUNYAEV, SHAMIL · 2007 to 2017
$3.5M
NIGMS NIH HHS R01 GM078598NIMH NIH HHS R01 MH101244
6 · The paper itself

Abstract

Deleterious mutations are expected to evolve under negative selection and are usually purged from the population. However, deleterious alleles segregate in the human population and some disease-associated variants are maintained at considerable frequencies. Here, we test the hypothesis that balancing selection may counteract purifying selection in neighboring regions and thus maintain deleterious variants at higher frequency than expected from their detrimental fitness effect. We first show in realistic simulations that balancing selection reduces the density of polymorphic sites surrounding a locus under balancing selection, but at the same time markedly increases the population frequency of the remaining variants, including even substantially deleterious alleles. To test the predictions of our simulations empirically, we then use whole-exome sequencing data from 6,500 human individuals and focus on the most established example for balancing selection in the human genome, the major histocompatibility complex (MHC). Our analysis shows an elevated frequency of putatively deleterious coding variants in nonhuman leukocyte antigen (non-HLA) genes localized in the MHC region. The mean frequency of these variants declined with physical distance from the classical HLA genes, indicating dependency on genetic linkage. These results reveal an indirect cost of the genetic diversity maintained by balancing selection, which has hitherto been perceived as mostly advantageous, and have implications both for the evolution of recombination and also for the epidemiology of various MHC-associated diseases.

Indexed as

Selection, GeneticSequence DeletionAllelesBiological EvolutionComputer SimulationDatabases, GeneticEvolution, MolecularGene FrequencyGenetic VariationGenome, HumanHaplotypesHLA AntigensHumansMajor Histocompatibility ComplexPolymorphism, GeneticHLA Antigensbalancing selectiondeleterious variationexomeMHC/HLA.mutation loadsimulations

Identifiers

PMID27436009
PMCPMC5026253

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.