PreprintCited by 5Genomics and Phylogenetic StudiesChromosomal and Genetic VariationsBioinformatics and Genomic Networks

The DOI matches its Crossref record; 113 of the 116 references it cites were found in a registry or an index, and 3 are not checked yet.

Accurate, comprehensive gene annotation and ortholog identification across thousands of vertebrate genomes with TOGA2

Open access

Abstract

Inferring orthologs and annotating coding genes remain central challenges in genomics, evident by the growing gap between assembled and annotated genomes. TOGA (Tool to infer Orthologs from Genome Alignments) addresses this challenge by integrating gene annotation and orthology inference. Here, we present TOGA2, the next generation of TOGA, which substantially improves annotation completeness, accuracy, scalability, and orthology inference. TOGA2 leverages exon-level orthology and introduces an exon-wise annotation procedure that reduces memory usage 513-fold and runtime 6.1-fold. We show that human-trained deep learning models for splice site prediction generalize across vertebrates. Integrating these predictions enables robust handling of evolutionary changes in exon-intron structure, including splice site shifts, intron deletions, and exonization of introns. A new gene tree reconciliation step refines orthology inference, and UTR annotation improves gene model completeness. Across mammals, birds, turtles, and percomorph fishes, TOGA2 annotations generally achieve higher gene completeness than transcriptome-informed RefSeq annotations. TOGA2 identifies previously unannotated exons in mouse, assigns informative gene symbols, and annotates V(D)J segments of antigen receptors. TOGA2 scales to thousands of genomes, which we demonstrate by generating comprehensive comparative genomics resources for 2,162 vertebrate assemblies, including gene annotations, ortholog sets, gene losses and duplications, retrogene candidates, and outputs supporting downstream analyses. Together, TOGA2 provides a scalable and versatile framework for comparative genomics that bridges the genome annotation gap.

Overview

Integrity signals

Registry

Crossref · 10.64898/2026.06.30.735536

Cites

113 of 116 references verified0 citation errors · 0 not checkable

Statistics

Recomputing p-values needs the paper’s full text.

Verification

Claims the paper makes

We couldn’t retrieve this paper’s full text, so its claims and self-check weren’t run. The registry and citation checks still apply.

Citations

Cites

Flagged first, then by citations

Research works printed but not linked: 2

  1. 2020, Gene gain and loss across the metazoan tree of life. Nat, Ecol. Evol, 4, 524
  2. 2020, Comprehensive database and evolutionary dynamics of U12-type introns, Nucleic Acids Res, 48, 7066

Cited by

Sorted by citations

Metadata

Authors
Malovichko, Y. V., Bein, B., Gonzales-Irribarren, A., Leushkin, E., Hilgers, L., Stephen, A., Yi, X., Albertini, M., Stadager, T., Zumpt, M., Hoppach, L., Götz, F., Himstedt, N., Koch, L., The Vertebrate Genomes Project Consortium Phase I, & Hiller, M.
Affiliations
  • Goethe University Frankfurt (DE)
  • Senckenberg Research Institute and Natural History Museum Frankfurt/M (DE)
  • Senckenberg Research Institute, Senckenberganlage 25, 60325 Frankfurt, Germany
Corresponding author
Hiller, Michael
Venue
bioRxiv (Cold Spring Harbor Laboratory)
Publisher
openRxiv
Published
2026-07-04
OpenAlex
W7167362817
Cited by
5
References
113
Citations by year
2026: 5
Type
posted content
Language
en
Open access
Locations
  • bioRxiv (Cold Spring Harbor Laboratory) (submittedVersion)
  • PubMed (publishedVersion)
  • PubMed Central (submittedVersion)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Genomics and Phylogenetic Studies
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Genetics › Chromosomal and Genetic Variations
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Bioinformatics and Genomic Networks
Keywords
genome annotation, splice site prediction, gene tree reconciliation, comparative genomics, vertebrate genomes

About these checks

Registry, retraction, Cites and statistics results are computed, not judged, with one exception: a printed reference that no index lists is read once by a model before it counts as a citation error. Claims are extracted by a model and kept only when their quote appears verbatim in the text; each cited source is then checked, with a model’s help, for whether it says what the claim relies on. Those verdicts can be wrong — read the claim’s quote and the cited source before relying on one.

Statistics and arithmetic are recomputed, not judged.

Confidence bands are shown only for fields calibrated on our annotated test set. None is calibrated yet, so no band is shown.

What counts as a claim ›How we measure confidence ›How we check this ›

Are you an author, or do you see a problem with this page? Request a review