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Jon Belyeu

@jonbelyeu.bsky.social
472 followers 570 following 17 posts

Bioinformatics scientist at PacBio, previously Illumina. I develop software tools in Rust and Python for genome analysis. orcid.org/0000-0001-5470-8299

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Reposted by Jon Belyeu
Jocelyne Bruand @jocelyne8.bsky.social · 15/09/2026
Our Isocall paper is out on bioRxiv www.biorxiv.org/content/10.6...! 🎉 Isocall enables scalable joint isoform calling on PacBio data, allowing for the characterization of isoform diversity across cohort-scale data. (1/7)
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Reposted by Jon Belyeu
Matt Holt @holtjma.bsky.social · 27/08/2026
Our article introducing Aardvark for variant benchmarking is now published in Genome Biology! “Aardvark: sifting through differences in a mound of variants” DOI: doi.org/10.1186/s130... GitHub: github.com/PacificBiosc... Follow along for some highlights… 1/N
doi.org
Client Challenge
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Jon Belyeu @jonbelyeu.bsky.social · 15/10/2025
Paraviewer creates easy-to-use review websites from Paraphase output. Try these demos! WGS data: pacificbiosciences.github.io/ParaviewerWG... PureTarget data: pacificbiosciences.github.io/ParaviewerPT...
pacificbiosciences.github.io
Paraviewer
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Jon Belyeu @jonbelyeu.bsky.social · 15/10/2025
My new tool Paraviewer is now available for use at github.com/PacificBiosc...! If you use Paraphase, try this new next-step tool - it automates and greatly simplifies variant visualization from Paraphase variant calling. If you're at #ASHG2025, visit me today at poster 4109W. #pacbio
github.com
GitHub - PacificBiosciences/Paraviewer
Contribute to PacificBiosciences/Paraviewer development by creating an account on GitHub.
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Reposted by Jon Belyeu
PacBio @pacbio.bsky.social · 15/10/2025
Attending #ASHG25? Visit #PacBio at booth 919! Connect with our team, explore live demos of #Vega, and discover the latest in long-read sequencing. While you’re there, enter our daily Labubu drawing! See the full program here: bit.ly/4nmBnfn #ASHG #HumanGenomics #ASHG2025
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Jon Belyeu @jonbelyeu.bsky.social · 09/10/2025
Tool (with demos) available at github.com/PacificBiosc...
github.com
GitHub - PacificBiosciences/SVTopo: Complex structural variant visualization for HiFi sequencing data
Complex structural variant visualization for HiFi sequencing data - PacificBiosciences/SVTopo
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Jon Belyeu @jonbelyeu.bsky.social · 09/10/2025
Here's an example from the paper: a complex rearrangement shown with svtopo (top), IGV (middle), and Ribbon (bottom):
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Jon Belyeu @jonbelyeu.bsky.social · 09/10/2025
My complex variant visualization tool SVTopo is now officially published in BMC Genomics! link.springer.com/article/10.1.... This tool allows HiFi users to view complex germline structural variation in intuitive and informative plots.
link.springer.com
Complex structural variant visualization with SVTopo - BMC Genomics
Background Structural variants are genomic variants that impact at least 50 nucleotides. Structural variants can play major roles in diversity and human health. Many structural variants are difficult to interpret and understand with existing visualization tools, especially when comprised of inverted sequences or multiple breakend pairs. Results We present SVTopo, a tool to visualize germline structural variants with supporting evidence from high-accuracy long reads in easily understood figures. We include examples of 101 visually complex structural variants from seven unrelated human genomes, manually assigned to ten categories. These demonstrate a broad spectrum of rearrangement and showcase the frequency of complex structural variants in human genomes. Conclusions SVTopo shows breakpoint evidence in ways that aid reasoning about the impact of multi-breakpoint rearrangements. The images created aid human reasoning about the result of structural variation on gene and regulatory regions.
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Reposted by Jon Belyeu
Matt Holt @holtjma.bsky.social · 06/10/2025
I'm excited to share our pre-print about a new variant benchmarking tool we've been working on for the past few months! Aardvark: Sifting through differences in a mound of variants GitHub: github.com/PacificBiosc... Some highlights in this thread: 1/N
github.com
GitHub - PacificBiosciences/aardvark: A tool for sniffing out the differences in vari-Ants
A tool for sniffing out the differences in vari-Ants - PacificBiosciences/aardvark
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Jon Belyeu @jonbelyeu.bsky.social · 22/04/2025
Install SVTopo from conda, or go straight to the source at github.com/PacificBiosc.... If you break it, let me know! The best way is by creating a github issue on the repo.
github.com
GitHub - PacificBiosciences/SVTopo: Complex structural variant visualization for HiFi sequencing data
Complex structural variant visualization for HiFi sequencing data - PacificBiosciences/SVTopo
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Jon Belyeu @jonbelyeu.bsky.social · 22/04/2025
In addition to making these handy-dandy images, SVTopo creates a serverless table browser to sort, filter, and view the results. The one for these 7 samples is live at pacificbiosciences.github.io/SVTopo/. Try it out!
pacificbiosciences.github.io
SVTopo
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Jon Belyeu @jonbelyeu.bsky.social · 22/04/2025
This example might look at first glance like a bad representation of a translocation, but the SVA annotation is a giveaway - reads from chr12 and chr19 aligned to a random SVA retrotransposon rather than a real connection between three chromosomes.
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Jon Belyeu @jonbelyeu.bsky.social · 22/04/2025
Alignment challenges mean that the visualization doesn’t always work, of course. 125 images from these 7 genomes had alignment artifacts that made them useless for variant interpretation. Many of these appear to be useful in another way, though – identification of false positives.
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Jon Belyeu @jonbelyeu.bsky.social · 22/04/2025
We looked at SVTopo images for 7 unrelated samples (HG002 and 6 from the platinum pedigrees cohort: 10.1101/2024.10.02.616333) and observed 142 unique complex SVs that we put in 11 categories (fig2).
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Jon Belyeu @jonbelyeu.bsky.social · 22/04/2025
This example is hard to understand from e.g. IGV/Ribbon (see Fig1) but pretty simple in SVTopo: 4 blocks deleted (B,D,F,H), 2 inverted (E,G), 1 re-ordered (C)
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Jon Belyeu @jonbelyeu.bsky.social · 22/04/2025
Although there are some excellent genome visualization tools out there, none of them are great at representing the complex structural variation that long reads uniquely identify. SVTopo is for this. Shows alignments in new genomic blocks and represents those blocks relative to the reference genome.
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Jon Belyeu @jonbelyeu.bsky.social · 22/04/2025
I just released a new preprint! The manuscript describes SVTopo, a software tool that enhances visualization of complex SVs using HiFi data: www.biorxiv.org/content/10.1.... Here’s a summary of the results:
biorxiv.org
Complex structural variant visualization with SVTopo
Structural variants are genomic variants that impact at least 50 nucleotides and can play major roles in diversity and human health. Many structural variants are complex multi-breakpoint rearrangement...
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Reposted by Jon Belyeu
Chris Saunders @ctsa.bsky.social · 10/04/2025
Great to see that sawfish, our new HiFi SV caller, is accepted for publication in Bioinformatics! Sawfish emphasizes local haplotype modeling to improve SV representation and genotyping in both single and joint-sample analysis. Advance-access article now available: (1/n) doi.org/10.1093/bioi...
doi.org
Sawfish: Improving long-read structural variant discovery and genotyping with local haplotype modeling
AbstractMotivation. Structural variants (SVs) play an important role in evolutionary and functional genomics but are challenging to characterize. High-accu
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Jon Belyeu @jonbelyeu.bsky.social · 22/01/2025
Interesting comparison between long-read sequencing techs for metagenomics: papers.ssrn.com/sol3/papers....
papers.ssrn.com
Culture-Independent Meta-Pangenomics Enabled by Long-Read Metagenomics Reveals Novel Associations with Pediatric Undernutrition
The human gut microbiome is associated with various forms of acute malnutrition, but current microbiome approaches are limited in resolution, often focused on c
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Reposted by Jon Belyeu
Matt Holt @holtjma.bsky.social · 11/12/2024
“StarPhase: Comprehensive Phase-Aware Pharmacogenomic Diplotyper for Long-Read Sequencing Data” is now on biorxiv! In this work, we explore the use of long-read sequencing (#PacBio #HiFi) for #pharmacogenomics #PGx. 1/N Pre-print: doi.org/10.1101/2024... Repo: github.com/PacificBiosc...
github.com
GitHub - PacificBiosciences/pb-StarPhase: A phase-aware pharmacogenomic diplotyper for PacBio datasets
A phase-aware pharmacogenomic diplotyper for PacBio datasets - PacificBiosciences/pb-StarPhase
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Reposted by Jon Belyeu
Dan Portik @dportik.bsky.social · 20/11/2024
Another very insightful paper on #methylation and long-read sequencing by @gangfang.bsky.social, describing some important but frequently overlooked caveats. Gang provides a fantastic summary in his post, but here's my take too😅:
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Jon Belyeu @jonbelyeu.bsky.social · 13/11/2024
If you were interested but missed it: www.pacb.com/wp-content/u...
pacb.com
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Jon Belyeu @jonbelyeu.bsky.social · 13/11/2024
#ASHG2024 was a blast. I had great discussions with friends and #pacbio collaborators, presented a poster on my new tool SVTopo, welcomed #PacBioVega to the world, and realized than I'm a bigger fan of One Republic than I knew before. Excited for next time!
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Reposted by Jon Belyeu
Dan Portik @dportik.bsky.social · 07/11/2024
It's official, #PacBio has launched a new benchtop sequencer! Quick summary of the new Vega system: - instrument = $169k - consumables = $1100 per run - output = 60 Gbp, 24 hr run time This is the #HiFi sequencer #microbiology labs have been asking for. www.pacb.com/press_releas...
pacb.com
PacBio Unveils the Vega System, a New Sequencing Platform Bringing HiFi to the Benchtop - PacBio
Priced at just $169,000 Vega is designed to make highly accurate long-read sequencing accessible to any laboratory Translations:  Japanese  |  Chinese  |  Korean MENLO PARK, Calif., Nov. 06, 2024 (GLO...
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Jon Belyeu @jonbelyeu.bsky.social · 30/10/2024
Glad to see the interest! Associating individual alignments with VCF breakend coordinates can be challenging, which is why the recommended workflow uses sawfish (we added a sawfish read output to make it work) but svtopo can also run with just the HiFi bam for samples without sawfish calls
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