Cited by 19Genomics and Rare DiseasesGenetic Associations and EpidemiologyBioinformatics and Genomic Networks

Prevalence of loss-of-function, gain-of-function and dominant-negative mechanisms across genetic disease phenotypes

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Badonyi, Mihaly, Marsh, Joseph A.·2025·Nature Communications

Published version of a preprint

Abstract

Molecular disease mechanisms caused by mutations in protein-coding regions are diverse, but they can be broadly categorised into loss-of-function, gain-of-function and dominant-negative effects. Accurately predicting these mechanisms is important, since therapeutic strategies can exploit these mechanisms. Computational predictors tend to perform less well at the identification of pathogenic gain-of-function and dominant-negative variants. Here, we develop a protein structure-based missense loss-of-function likelihood score that can separate recessive loss of function and dominant loss of function from alternative disease mechanisms. Using missense loss-of-function scores, we estimate the prevalence of molecular mechanisms across 2,837 phenotypes in 1,979 Mendelian disease genes, finding that dominant-negative and gain-of-function mechanisms account for 48% of phenotypes in dominant genes. Applying missense loss-of-function scores to genes with multiple phenotypes reveals widespread intragenic mechanistic heterogeneity, with 43% of dominant and 49% of mixed-inheritance genes harbouring both loss-of-function and non-loss-of-function mechanisms. Furthermore, we show that combining missense loss-of-function scores with phenotype semantic similarity enables the prioritisation of dominant-negative mechanisms in mixed-inheritance genes. Our structure-based approach, accessible via a Google Colab notebook, offers a scalable tool for predicting disease mechanisms and advancing personalised medicine.

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Authors
Badonyi, M., & Marsh, J. A.
Affiliations
Institute of Genetics and Cancer (GB)
Corresponding author
  • Badonyi, Mihaly
  • Marsh, Joseph A.
Venue
Nature Communications
Published
2025-09-25
Volume
16
Issue
1
Pages
8392-8392
ISSN
2041-1723 (ISSN-L)
OpenAlex
W4414512364
Cited by
19
References
125
Citations by year
2026: 16 · 2025: 3
FWCI
11.17
Type
journal article
Language
en
Open access
Locations
  • Nature Communications (publishedVersion, cc-by)
  • bioRxiv (Cold Spring Harbor Laboratory) (acceptedVersion, cc-by)
  • Europe PMC (PubMed Central) (publishedVersion, cc-by)
  • PubMed (publishedVersion)
  • PubMed Central (publishedVersion, cc-by)
  • Edinburgh Research Explorer (University of Edinburgh) (submittedVersion, cc-by)
  • DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion, cc-by-sa)
  • OSF Preprints (OSF Preprints) (submittedVersion)
Funders
  • European Commission (HORIZON2020)
  • Lister Institute of Preventive Medicine
  • Medical Research Council (MC_UU_00035/9)
  • H2020 European Research Council (101001169)
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 › Molecular Biology › Bioinformatics and Genomic Networks
Keywords
loss of function, gain-of-function, dominant-negative mechanism, missense mutations, protein structure-based prediction, Mendelian disease genes, variant prioritization, recessive inheritance
MeSH terms
Loss of Function Mutation, Gain of Function Mutation, Genes, Dominant, Humans, Phenotype, Prevalence, Mutation, Missense, Genetic Diseases, Inborn

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