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Building and applying pangenome references to capture genetic diversity
Hufsah Ashraf1,2, Daniel Doerr2,3,4, Jana Ebler1,2
1Institute for Medical Biometry and Bioinformatics, Medical Faculty and University Hospital Düsseldorf, Heinrich Heine University Düsseldorf, Düsseldorf, Germany.
Nature Reviews. Genetics
|July 16, 2026
Summary
Pangenome references, built from diverse genomes using advanced sequencing, capture more genetic variation than single linear references. This enables unbiased variant discovery and opens new avenues in genetic studies.
Area of Science:
- Genomics
- Bioinformatics
- Population Genetics
Background:
- Linear reference genomes, based on limited individuals, fail to represent comprehensive genetic diversity.
- Traditional genomics analyses are constrained by the inherent biases of single-genome references.
- Advances in long-read sequencing are enabling high-quality de novo assembly of multiple genomes.
Purpose of the Study:
- To review the opportunities presented by pangenome references in genomics research.
- To highlight the potential of pangenomes for unbiased variant discovery and genetic studies.
- To discuss the challenges that need community attention for pangenome adoption.
Main Methods:
- Integration of multiple genome sequences into graph-based or multi-haplotype representations (pangenomes).
- Utilizing long-read sequencing technologies for accurate de novo genome assembly.
- Development of computational tools for analyzing structural variants and complex genetic loci within pangenomes.
Main Results:
- Pangenomes capture extensive genetic variation beyond single linear references.
- Widespread adoption of pangenomes removes biases in variant discovery.
- New computational tools facilitate the analysis of complex genetic regions within pangenomes.
Conclusions:
- Pangenome references represent a significant advancement over linear genomes for capturing genetic diversity.
- Pangenomes offer transformative opportunities for genome-wide association studies and rare-disease genetics.
- Addressing current challenges is crucial for the widespread implementation and success of pangenome-based research.
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