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Yun S. Song

@yun-s-song.bsky.social
937 followers 128 following 89 posts

Professor of EECS and Statistics at UC Berkeley. Mathematical and computational biologist.

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Yun S. Song @yun-s-song.bsky.social · 26/09/2026
We are excited to announce a new faculty position in AI for Biology at UC Berkeley. Please repost & share this opportunity with outstanding early-career researchers in your networks. Apply by Nov 9, 2026: aprecruit.berkeley.edu/JPF05560
aprecruit.berkeley.edu
Assistant Professor - AI for Biology - Electrical Engineering & Computer Sciences and Center for Computational Biology
University of California, Berkeley is hiring. Apply now!
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Yun S. Song @yun-s-song.bsky.social · 23/09/2026
Please help spread the word! We are recruiting multiple Postdoctoral Fellows as part of the recently launched Bakar Computational Biomedicine Initiative (BCBI) at UC Berkeley and UCSF. BCBI website: bcbi.berkeley.edu Apply by Nov 1, 2026: berkeley.infoready4.com#freeformComp... (1/n)
bcbi.berkeley.edu
Bakar Computational Biomedicine Initiative | Bakar Computational Biomedicine Initiative
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Yun S. Song @yun-s-song.bsky.social · 09/09/2026
We are thrilled to share that our GPN-Star manuscript is now published and freely available: doi.org/10.1038/s415... (1/n)
doi.org
Predicting genome-wide functional constraints with GPN-Star - Nature
GPN-Star, a genomic language model with a phylogeny-aware architecture for whole-genome alignment data, is shown to be a scalable and flexible tool for genetic variant effect prediction across species...
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Yun S. Song @yun-s-song.bsky.social · 06/07/2026
I am thrilled to share that UC Berkeley and UCSF have launched a joint initiative in Computational Biomedicine! cdss.berkeley.edu/news/uc-berk... We will soon be recruiting new faculty and postdoctoral fellows. Please repost to help spread the word.
cdss.berkeley.edu
UC Berkeley and UCSF Launch Computational Biomedicine Initiative
UC Berkeley and UCSF have launched a joint program called the Bakar Computational Biomedicine Initiative to develop the frontier of AI and biomedicine, tremendously accelerating advances in clinical c...
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Yun S. Song @yun-s-song.bsky.social · 08/06/2026
Please check out our forthcoming ICML paper on learning the BCR affinity maturation process, with applications in variant effect prediction and antibody design.
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Molly Schumer @mollyschumer.bsky.social · 23/04/2026
Please share widely! We will imminently be posting a technician position in our lab group since @rheasood.bsky.social is off to grad school 🙌! If you know of anyone excited about molecular biology, evolution, and functional genomics please have them reach out (schumer at stanford). Start date ~June
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Yun S. Song @yun-s-song.bsky.social · 21/02/2026
Can we simulate realistic evolutionary trajectories and “replay the tape of life”? In this work, we propose a flexible, generalizable deep learning framework for modeling how the entire protein sequence evolves over time while capturing complex interactions across sites. 1/n doi.org/10.64898/202...
doi.org
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Yun S. Song @yun-s-song.bsky.social · 19/12/2025
Published online on Jan 2, 2025 and just appeared in the December 2025 issue!
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Peter Sudmant @psudmant.bsky.social · 18/12/2025
The registration deadline is fast approaching for probgen 2026! Abstracts due by January 15, registration by January 31 probgen2026.github.io
probgen2026.github.io
Home - ProbGen 2026
Your Site Description
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Frederick "Erick" Matsen @matsen.bsky.social · 11/12/2025
Over the past 5+ years I've had the honor of working with @wsdewitt.github.io @victora.bsky.social and many others on a project to "replay" affinity maturation evolution from a fixed starting point. matsen.group/general/2025...
matsen.group
Replaying evolution to learn about the fitness landscape of affinity maturation
A five year collaboration with the Victora lab is bearing fruit for evolutionary biology.
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Society for Molecular Biology and Evolution @official-smbe.bsky.social · 09/12/2025
Organisers - Shu Zhang | @gladstoneinst.bsky.social Invited Speaker - @yun-s-song.bsky.social | @ucberkeleyofficial.bsky.social
SMBE2026 Symposium 10 | Learning from evolution: AI models for genomic function

Organisers
- Shu Zhang — Gladstone Institutes & UCSF, USA (Female)

Invited Speaker
- Yun S. Song — University of California, Berkeley, USA (Male)
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Mia Levine @levine-lab.bsky.social · 28/11/2025
How to keep in step when your (protein) partner speeds up… Here we investigated the adaptive remodeling of a protein-protein interaction surface essential for telomere protection. Congrats to whole team! www.science.org/doi/10.1126/...
science.org
Rapid compensatory evolution within a multiprotein complex preserves telomere integrity
Intragenomic conflict with selfish genetic elements spurs adaptive changes in subunits of essential multiprotein complexes. Whether and how these adaptive changes disrupt interactions within such comp...
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Yun Deng @yundeng.bsky.social · 25/11/2025
The last work of my PhD is finally out: www.pnas.org/doi/10.1073/...! This work is about accurately estimating branch length in the Ancestral Recombination Graph (ARG), which is achieved by a really simple framework with minimal assumptions. (1/n)
pnas.org
PNAS
Proceedings of the National Academy of Sciences (PNAS), a peer reviewed journal of the National Academy of Sciences (NAS) - an authoritative source of high-impact, original research that broadly spans...
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Yun S. Song @yun-s-song.bsky.social · 14/10/2025
An open-rank faculty search in AI + Engineering (Bioengineering included) at UC Berkeley. Due date: Monday, Nov 3, 2025 at 11:59pm (PT) Please help spread the news. aprecruit.berkeley.edu/JPF05144
aprecruit.berkeley.edu
Assistant/Associate/Full Professor – Engineering + Artificial Intelligence - College of Engineering (host academic department(s) to be determined)
University of California, Berkeley is hiring. Apply now!
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Anshul Kundaje @anshulkundaje.bsky.social · 22/09/2025
This is truly an incredible breakthrough IMO. Really exemplifies what you get when deep domain expertise (popgen/evolution/disease genetics in this case) fuses with cleverly crafted ML. What u get r sleek, well thought out architectures that absolutely destroy the behemoths. Wow!! 1/
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Yun S. Song @yun-s-song.bsky.social · 22/09/2025
We are excited to share GPN-Star, a cost-effective, biologically grounded genomic language modeling framework that achieves state-of-the-art performance across a wide range of variant effect prediction tasks relevant to human genetics. www.biorxiv.org/content/10.1... (1/n)
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Yun S. Song @yun-s-song.bsky.social · 11/09/2025
SINGER, our ARG inference method, is finally published and freely available online: doi.org/10.1038/s415... It was a long journey – 16 months from initial submission to acceptance. Is it just me, or has peer review gotten more arduous lately? 4+ rounds of review isn't so unusual these days...
doi.org
Robust and accurate Bayesian inference of genome-wide genealogies for hundreds of genomes - Nature Genetics
SINGER is a method for creating ancestral recombination graphs to understand the genealogical history of genomes. The method has increased speed, and thus scalability, without sacrificing accuracy.
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Alan Aw @alan-aw.bsky.social · 05/09/2025
Hi Bluesky — Dedicating my first post to this work and software, led by the incredibly meticulous and capable @fandingzhou.bsky.social! An earlier version of this was shared at the 2022 Bioconductor Conference (bioc2022.bioconductor.org/schedule/).
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fandingzhou.bsky.social @fandingzhou.bsky.social · 05/09/2025
Gene expression changes aren’t just about mean shifts — variability shifts matter too, especially for aging. We're thrilled to introduce QRscore, a flexible non-parametric framework for detecting shifts in mean and variance across conditions. doi.org/10.1016/j.cr...
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psathyrella.bsky.social @psathyrella.bsky.social · 16/08/2025
In a new preprint we use deep learning on lineage trees to infer the functional form of the relationship between affinity and fitness that controls antibody evolution in germinal centers: arxiv.org/abs/2508.09871 🧵
arxiv.org
Inference of germinal center evolutionary dynamics via simulation-based deep learning
B cells and the antibodies they produce are vital to health and survival, motivating research on the details of the mutational and evolutionary processes in the germinal centers (GC) from which mature...
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Yun S. Song @yun-s-song.bsky.social · 15/08/2025
Antibodies are highly diverse, but most possible sequences are unstable or polyreactive. In this work, just published in Cell Syst., we propose a new source of data for modeling constraints from these properties. Our models show clear improvements in predicting Ab dysfunction. (1/n) t.co/qCZERPUMPF
t.co
https://authors.elsevier.com/a/1lbX08YyDfuZWX
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Earth BioGenome Project 🌍 @ebpgenome.bsky.social · 29/07/2025
(1/4) 🧬 Why Sequence the Genomes of Earth’s Biodiversity? The Earth BioGenome Project 🌍 is a global network of initiatives working together to create a complete genome library for all Eukaryotic life—from mushrooms 🍄 to mammals 🐘. #biodiversity #genomes #sequence #earthbiogenome #education #stem
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Center for Cancer Immunotherapy and Immunobiology @ccii-kyoto.bsky.social · 02/07/2025
Germinal center clonal diversity trees as a musical score, a great image to start @victora.bsky.social's CCII seminar, "Replaying germinal center evolution on a quantified affinity landscape" #GerminalCenter #Immunology www.ccii.med.kyoto-u.ac.jp/en/event/the...
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Jacob Schreiber @jmschreiber91.bsky.social · 18/06/2025
In vivo mapping of mutagenesis sensitivity of human enhancers www.nature.com/articles/s41...
nature.com
In vivo mapping of mutagenesis sensitivity of human enhancers - Nature
Human enhancers contain a high density of sequence features that are required for their normal in vivo function.
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Yun S. Song @yun-s-song.bsky.social · 06/06/2025
The 2026 Probabilistic Modeling in Genomics (ProbGen) meeting will be held at UC Berkeley, March 25-28, 2026. We have an amazing list of keynote speakers and session chairs: probgen2026.github.io Please help spread the news.
probgen2026.github.io
Home - ProbGen 2026
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Gabriel Victora @victora.bsky.social · 05/06/2025
Wanted to highlight our latest preprint--a huge effort by multiple people and labs, but led primarily by @wsdewitt.github.io, Tatsuya Araki, and Ashni Vora, in a very close wet-dry collaboration with @matsen.bsky.social’s lab at the Hutch www.biorxiv.org/content/10.1...
biorxiv.org
Replaying germinal center evolution on a quantified affinity landscape
Darwinian evolution of immunoglobulin genes within germinal centers (GC) underlies the progressive increase in antibody affinity following antigen exposure. Whereas the mechanics of how competition be...
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Innovative Genomics Institute @innovativegenomics.bsky.social · 04/06/2025
Check out CRISPRpedia, our resource on all things #CRISPR! The latest chapter is on CRISPR & ethics: innovativegenomics.org/crisprpedia/... CRISPRpedia features 85+ original illustrations that are free to download & use for non-commercial purposes! #STEMeducation #STEMed #bioethics #SciArt
CRISPRpedia: Chapter 5
CRISPR & Ethics
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Jeff Spence @jeffspence.github.io · 30/05/2025
How well can deep learning models predict the effect of modifying chromatin on gene expression??? Our work -- led by Sanjit Batra and Alan Cabrera when they were in @yun-s-song.bsky.social ’s and Isaac Hilton’s labs -- tries to answer this. 🧵🧬🧪 elifesciences.org/reviewed-pre...
elifesciences.org
Predicting the effect of CRISPR-Cas9-based epigenome editing
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Charlie Pugh @cwjpugh.bsky.social · 26/05/2025
New preprint in collaboration with @paulinanunezv.bsky.social supervised by @jonnyfrazer.bsky.social and Mafalda Dias – we propose a simple approach to improving zero-shot variant effect prediction in pre-existing protein and genome language models: 🧶 1/n www.biorxiv.org/content/10.1...
biorxiv.org
From Likelihood to Fitness: Improving Variant Effect Prediction in Protein and Genome Language Models
Generative models trained on natural sequences are increasingly used to predict the effects of genetic variation, enabling progress in therapeutic design, disease risk prediction, and synthetic biolog...
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Yun S. Song @yun-s-song.bsky.social · 23/05/2025
How can one efficiently simulate phylodynamics for populations with billions of individuals, as is typical in many applications, e.g., viral evolution and cancer genomics? In this work with M. Celentano, @wsdewitt.github.io , & S. Prillo, we provide a solution. doi.org/10.1073/pnas... 1/n
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Innovative Genomics Institute @innovativegenomics.bsky.social · 15/05/2025
In a medical breakthrough, a team including IGI’s @urnov.bsky.social & @giannikopoulosp.bsky.social created an on-demand #CRISPR therapy for an infant with a deadly gene mutation — developed, approved, and delivered to the patient in just 6 months. Read more: ow.ly/G0Bg50VTonC #RareDisease 🧬
The patient, KJ, reaching out after infusion of the CRISPR therapy, with a big smile! Photo credit Children's Hospital of Philadelphia
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Innovative Genomics Institute @innovativegenomics.bsky.social · 19/05/2025
Jennifer Doudna @jenniferdoudna.bsky.social @doudna-lab.bsky.social speaks with Cleo Abrams on the history and future of #CRISPR 🧬. Watch here: youtu.be/0OXaanDHENI?...
youtu.be
You Can Fix Your DNA... Starting Now (feat. Nobel Prize Winner)
YouTube video by Cleo Abram
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Andrea Montanari @andrea-montanari.bsky.social · 30/04/2025
Overfitting is among the conceptually most interesting problems in machine learning. I am happy of several new phenomena we began to understand with Pierfrancesco Urbani. Alert: mostly non-rigorous! (Celebrating Jorge Kurchan) web.stanford.edu/~montanar/OT...
web.stanford.edu
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Heng Li @lh3lh3.bsky.social · 26/04/2025
If you want to check if a human gene has copy-number changes or lands in a complex region, try pangene.bioinweb.org. Recently updated with more and better assemblies.
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Yun S. Song @yun-s-song.bsky.social · 07/04/2025
Thrilled to see my digital art on the cover of Trends Genet. The two binary strings represent reverse-complementary DNA sequences (00=A, 01=C, 10=G, 11=T) and the connecting rectangles represent “embeddings” learned by DNA language models. Pls check out our article as well: doi.org/10.1016/j.ti...
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Yun S. Song @yun-s-song.bsky.social · 04/03/2025
In our updated TraitGym preprint (w/ @gonzalobenegas.bsky.social & Gökcen Eraslan), we evaluate Evo 2 on regulatory variants associated with human traits. We see marked performance gains with scale on Mendelian traits, although still a bit behind alignment-based methods. doi.org/10.1101/2025... 1/n
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Gonzalo Benegas @gonzalobenegas.bsky.social · 13/02/2025
Can DNA sequence models predict mutations affecting human traits? We introduce TraitGym, a curated benchmark of causal regulatory variants for 113 Mendelian & 83 complex traits, and evaluate functional genomics and DNA language models. Joint work w/ Gökcen Eraslan and @yun-s-song.bsky.social 🧵👇
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Hani Goodarzi @genophoria.bsky.social · 13/01/2025
A month ago we @vevotherapeutics.bsky.social announced that we have generated the largest single-cell perturbation atlas in history, Tahoe-100M. Today, we announce that we will fully open-source Tahoe-100M in Feb, as part of a collaboration with NVidia health to train cell state models.
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Yun S. Song @yun-s-song.bsky.social · 08/01/2025
Our work, which shows statistical issues with the previous claim of a severe ancient bottleneck in the ancestry of African populations, has been selected as a Featured article in Genetics. doi.org/10.1093/gene...
doi.org
A previously reported bottleneck in human ancestry 900 kya is likely a statistical artifact
Hu et al. (Science, 2023) recently inferred a severe ancient bottleneck around 900 thousand years (kya) ago in African ancestry but found no similar eviden
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Yun S. Song @yun-s-song.bsky.social · 03/01/2025
Coincidentally, another article from my lab on DNA language models got published on the same day as GPN-MSA. It's freely available for 50 days from this link: authors.elsevier.com/a/1kNCscQbJB... Genomic language models: opportunities and challenges Please share with your colleagues.
authors.elsevier.com
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Yun S. Song @yun-s-song.bsky.social · 02/01/2025
Happy New Year! Our GPN-MSA paper is finally published, under a slightly different title from the preprint. Please check it out and share it with your colleagues: doi.org/10.1038/s415... 1/4
doi.org
A DNA language model based on multispecies alignment predicts the effects of genome-wide variants - Nature Biotechnology
A language model predicts the effects of genetic variants in the human genome.
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Jeff Spence @jeffspence.github.io · 17/12/2024
What do GWAS and rare variant burden tests discover, and why? Do these studies find the most IMPORTANT genes? If not, how DO they rank genes? Here we present a surprising result: these studies actually test for SPECIFICITY! A 🧵on what this means... (🧪🧬) www.biorxiv.org/content/10.1...
biorxiv.org
Specificity, length, and luck: How genes are prioritized by rare and common variant association studies
Standard genome-wide association studies (GWAS) and rare variant burden tests are essential tools for identifying trait-relevant genes. Although these methods are conceptually similar, we show by anal...
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Michael Skinnider @skinnider.bsky.social · 19/11/2024
Thrilled to share our approach for language model-guided discovery of unknown mammalian metabolites: DeepMet. We’ve now used this approach to discover ~50 new human and mouse metabolites! www.biorxiv.org/content/10.1...
biorxiv.org
Language model-guided anticipation and discovery of unknown metabolites
Despite decades of study, large parts of the mammalian metabolome remain unexplored. Mass spectrometry-based metabolomics routinely detects thousands of small molecule-associated peaks within human ti...
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Yun S. Song @yun-s-song.bsky.social · 16/11/2024
Large protein language models can learn complex epistatic interactions, but how much does that help with predicting variant effects? In this NeurIPS article, we show that classical independent-sites phylogenetic models can outperform pLMs on this task. 1/7 openreview.net/forum?id=H7m...
openreview.net
Ultrafast classical phylogenetic method beats large protein...
Amino acid substitution rate matrices are fundamental to statistical phylogenetics and evolutionary biology. Estimating them typically requires reconstructed trees for massive amounts of aligned...
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