Evidence map›Paper›PMID 39589392›Full record

ArticleeLife2024

Heterozygote advantage can explain the extraordinary diversity of immune genes.

Mattias Siljestam, Claus Rueffler

Abstract read
In one paragraph

Article in eLife, 2024. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 9 papers.

0numbers the graph read from it
0cells of the map it votes in
9citing papers in PubMed
–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

9 citing papers in PubMed.

  1. Article
  2. Genes · 2026
    Article
  3. Article
  4. Review
  5. Genetic Diversity Analysis of 11Animals : an open access journal from MDPI · 2026
    Article
  6. Genetic Polymorphism RevealsAnimals : an open access journal from MDPI · 2025
    Article
  7. Article
  8. Article
  9. Article
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

2 authors.

Mattias SiljestamDepartment of Ecology and Genetics, Animal Ecology, Uppsala University, Uppsala, Sweden.ORCID https://orcid.org/0000-0002-3720-4926
Claus RuefflerDepartment of Ecology and Genetics, Animal Ecology, Uppsala University, Uppsala, Sweden.ORCID https://orcid.org/0000-0001-9836-2752

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

The majority of highly polymorphic genes are related to immune functions and with over 100 alleles within a population, genes of the major histocompatibility complex (MHC) are the most polymorphic loci in vertebrates. How such extraordinary polymorphism arose and is maintained is controversial. One possibility is heterozygote advantage (HA), which can in principle maintain any number of alleles, but biologically explicit models based on this mechanism have so far failed to reliably predict the coexistence of significantly more than 10 alleles. We here present an eco-evolutionary model showing that evolution can result in the emergence and maintenance of more than 100 alleles under HA if the following two assumptions are fulfilled: first, pathogens are lethal in the absence of an appropriate immune defence; second, the effect of pathogens depends on host condition, with hosts in poorer condition being affected more strongly. Thus, our results show that HA can be a more potent force in explaining the extraordinary polymorphism found at MHC loci than currently recognised.

Indexed as

HeterozygoteMajor Histocompatibility ComplexPolymorphism, GeneticAllelesAnimalsEvolution, MolecularGenetic VariationHumansModels, Geneticallelic polymorpahismdivergent allele advantageevolutionary biologyevolutionary invasion analysishost-pathogen interactionnegative frequency-dependent selectionnone

Identifiers

PMID39589392
PMCPMC11723581

What OpenQuestion holds

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Registered trials

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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.