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Emma Dann

@emmamarydann.bsky.social
847 followers 486 following 24 posts

Postdoc fellow @ Stanford & Gladstone Institutes Core team @scverse-team.bsky.social Bringing the single-cell genomics in human complex trait genetics emdann.github.io

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Emma Dann @emmamarydann.bsky.social · 28/08/2026
Our work on systematic perturb-seq of primary human T cells is now out in Cell 🎉 www.cell.com/cell/fulltex... It's been a privilege to work with @ronghuizhu.bsky.social between @jkpritch.bsky.social @marsonlab.bsky.social labs, with a dream-team of co-authors ❤️ Highlights in preprint thread👇
cell.com
Genome-scale perturb-seq in primary human CD4+ T cells maps context-specific regulators of T cell programs and human immune traits
A dynamic atlas of gene regulation was generated by perturbing every expressed gene across 22 million primary human CD4+ T cells under resting conditions and following re-stimulation. The resulting ma...
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Huisheng (Julie) Zhu @huishengzhu.bsky.social · 30/03/2026
Why do schizophrenia GWAS signals look so flat across the genome? In our recent preprint, we explored why psychiatric disorders — and, more broadly, brain-related traits involving the central nervous system — appear to have unusual genetic architectures. 🧵1/n
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Ana Carolina Leote @anacarolinaleote.bsky.social · 04/02/2026
🧬 2026 Internship: Marioni Group @genentech.bsky.social Seeking PhD intern for Deep Learning on large-scale genetic screens (Perturb-seq/Optical). Focus: ML for single-cell + imaging to decode phenotypes. 📍 SSF (On-site) | 12-wk paid ⚠️ Apply via portal only: 🔗 bit.ly/45P7TQB #CompBio #AI #Genetics
roche.wd3.myworkdayjobs.com
2026 Summer Intern (Computational Sciences - Cluster of Excellence)
2026 Summer Intern (Computational Sciences - Cluster of Excellence) The Marioni group in the Computational Sciences (CS) department studies the molecular mechanisms of cell fate decisions in early dev...
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Nikhil Milind @nikhilmilind.dev · 06/01/2026
How well does TWAS estimate a gene’s direction of effect on a trait? We think of this as an important stress-test for the accuracy of TWAS. In a new pre-print, we find that TWAS gets the sign wrong around 20-30% of the time! doi.org/10.64898/202... 1/n
doi.org
High false sign rates in transcriptome-wide association studies
Transcriptome-wide association studies (TWAS) are widely used to identify genes involved in complex traits and to infer the direction of gene effects on traits. However, despite their popularity, it r...
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Emma Dann @emmamarydann.bsky.social · 05/01/2026
Together with @ronghuizhu.bsky.social, we are thrilled to present our new perturb-seq study of 22M primary CD4+ T cells, across donors and timepoints – the result of a decade-long collaboration between the Marson @marsonlab.bsky.social and Pritchard @jkpritch.bsky.social labs 🧵 tinyurl.com/gwt2025
tinyurl.com
Genome-scale perturb-seq in primary human CD4+ T cells maps context-specific regulators of T cell programs and human immune traits
Gene regulatory networks encode the fundamental logic of cellular functions, but systematic network mapping remains challenging, especially in cell states relevant to human biology and disease. Here, ...
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Reposted by Emma Dann
Jonathan Pritchard @jkpritch.bsky.social · 11/12/2025
GWAS has been an incredible discovery tool for human genetics: it regularly identifies *causal* links from 1000s of SNPs to any given trait. But mechanistic interpretation is usually difficult. Our latest work on causal models for this is out yesterday: www.nature.com/articles/s41... A short🧵:
nature.com
Causal modelling of gene effects from regulators to programs to traits - Nature
Approaches combining genetic association and Perturb-seq data that link genetic variants to functional programs to traits are described.
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Mineto Ota @minetoota.bsky.social · 11/12/2025
Thank you Alex! Excited to see our paper published in @nature.com ! Huge thanks to @jeffspence.github.io , @tkyzeng.bsky.social , @emmamarydann.bsky.social, @nikhilmilind.dev, @marsonlab.bsky.social, @jkpritch.bsky.social, and all the members of the Pritchard and Marson labs for your enormous help!
rdcu.be
Causal modelling of gene effects from regulators to programs to traits
Nature - Approaches combining genetic association and Perturb-seq data that link genetic variants to functional programs to traits are described.
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Jeff Spence @jeffspence.github.io · 19/11/2025
@hakha.bsky.social and I wrote a Research Briefing (with a lay summary + "behind the scenes") of our paper on how genes are prioritized by GWAS and rare variant burden tests. 🧬🧪 www.nature.com/articles/d41...
nature.com
How do genetic association studies rank genes?
Genome-wide association studies and rare-variant burden tests reveal complementary aspects of trait biology.
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Lukas Heumos @lukasheumos.bsky.social · 06/11/2025
Excited to see a home for MCP servers in bioinformatics emerge! The community needs a central hub for developing MCP servers for key bioinfo tools. At @scverse.bsky.social we're contributing to this effort - can't wait to share what we're building
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Roshni Patel @roshnipatel.bsky.social · 15/10/2025
I'm recruiting a postdoc for my group (based in beautiful Eugene, OR). Please get in touch if you're interested, esp if you'd like to chat at #ASHG25!
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Emma Dann @emmamarydann.bsky.social · 14/10/2025
En route to Boston for #ASHG25 #ASHG2025! 👉 I'll be presenting a poster on our new work on genome-wide perturb-seq screens in primary human T cells (5049W, Wed 2.30pm) 👉 you can hear me talk about it at the Industry Education session presented by Ultima Genomics (Thu 3pm) [1/2]
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scverse @scverse.bsky.social · 10/10/2025
Last call, scverse community! 🐦 Early-bird closes October 17 for the scverse Conference 2025. Single-cell, open science, and the people behind it — all in one place. 📝 Register here: www.eventbrite.com/e/scverse-co... 2 days of talks + 1 day of workshops ℹ️ Info: scverse.org/conference2025
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scverse @scverse.bsky.social · 03/10/2025
🚀 NEW PANEL ANNOUNCEMENT: Agentic Workflows in Bioinformatics at scverse 2025! 🚀 We're thrilled to introduce an exciting panel discussion at the upcoming scverse Conference 2025! More information in 🧵 #scverse2025 #Bioinformatics #AgenticAI #Conference
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scverse @scverse.bsky.social · 02/09/2025
🧬 Tahoe Workshop at scverse conference 2025 🧬 Disease Biology and Therapeutics in the Age of Frontier Datasets 🧵 @tahoetherapeutics.bsky.social #scverse2025 #ComputationalBiology #DrugDiscovery #TahoeTherapeutics #SingleCell #PerturbationBiology
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scverse @scverse.bsky.social · 01/09/2025
🎉scverse conference 2025 Call for Abstracts DEADLINE EXTENDED! 🎉 We're excited to announce that the deadline to submit abstracts for the scverse Conference 2025 has been extended to September 15, 2025! 🧵 #scverse #scverse2025 #SingleCell #Conference
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scverse @scverse.bsky.social · 28/08/2025
Meet the keynote speakers for the 2025 scverse conference! Elham Azizi, Associate Professor of Cancer Data Research and Biomedical Engineering at Columbia University 🧵 @elhamazizi.bsky.social @columbiauniversity.bsky.social #scverse #scverse2025 #machinelearning #genomics #cancerimmunology
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scverse @scverse.bsky.social · 26/08/2025
🧫 Meet the keynote speakers for the 2025 scverse conference! Erika Alden DeBenedictis, Co-founder of The Align Foundation & CEO of Pioneer Labs @erika-alden.bsky.social ‪ @alignbio.bsky.social @pioneerlabs.bsky.social #scverse #scverse2025 #StructuralBiology #Biotech #Stanford
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Emma Dann @emmamarydann.bsky.social · 25/08/2025
We're committed to support as many attendees as possible join us at #scverse2025 - feel free to reach out if you have questions!
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scverse @scverse.bsky.social · 19/08/2025
🧠 Meet the keynote speakers for the 2025 scverse conference! Panos Roussos, Professor at Icahn School of Medicine at Mount Sinai 🧵 @panosroussos.bsky.social #scverse #scverse2025 #SingleCell #SpatialTranscriptomics #Conference #Keynote
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Jonathan Pritchard @jkpritch.bsky.social · 01/06/2025
I have an opportunity to hire a staff scientist for my lab. Looking for someone with outstanding skillset in ML/statistics, genomics applications; interest in mentoring, strong publication record, PD experience required. Email CV to me+cc my assistant (see 'contact' on my website). Ad to follow.
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Emma Dann @emmamarydann.bsky.social · 13/05/2025
It's happening! 🙌
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scverse @scverse.bsky.social · 14/02/2025
🎉 Scanpy 1.11.0 is out! 🎉 just after reaching 2000 stars on GitHub! - sc.pp.sample replaces subsample with many new features - Sparse Dask support pca - session-info2 package for more reproducible notebooks See the release notes:
buff.ly
Release notes
Version 1.11: 1.11.0 2025-02-14: Release candidates: rc2 2025-01-24, rc1 2024-12-20. Features: rc1 sample() supports both upsampling and downsampling of observations and variables. subsample() is n...
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Sophie Belman @sophiebelman.bsky.social · 09/02/2025
I’m racing a Half Ironman triathlon this June. 2km swim, 90km cycle, 20km run and raising money for the Meningitis Research Foundation. Meningitis has ~2.5 million cases and 250,000 deaths annually predominantly among children. Any donation would be great! gofund.me/a958252f
gofund.me
Donate to Half Iron(wo)man for Meningitis Research, organized by Sophie Belman
I will be racing my first Half Ironman triathlon in Zurich this June. It includ… Sophie Belman needs your support for Half Iron(wo)man for Meningitis Research
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scverse @scverse.bsky.social · 05/02/2025
Don't forget to apply to the upcoming @scverse.bsky.social x @owkin.bsky.social hackathon - applications due this Friday, February 7th! 📆March 17-19, 2025 📍Owkin Office, Paris docs.google.com/forms/d/e/1F...
docs.google.com
Scverse x Owkin Hackathon in Paris
We're pleased to announce the next Scverse Hackathon will take place in the Owkin offices in Paris from 17/03/2025 9am to 19/03/2025 1:30pm. This hackathon is a joint initiative between the scverse c...
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Wolfgang Huber @wkhuber.bsky.social · 31/01/2025
Come work at the European Molecular Biology Laboratory in the beautiful science & university city Heidelberg as a Research Software Engineer on R/Bioconductor tools for biological data science and AI ! embl.wd103.myworkdayjobs.com/EMBL/job/Hei...
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Florian Jug @florianjug.bsky.social · 29/01/2025
🚨🚨 MEGA JOB ALERT 🚨🚨 Independent Group Leader Positions in Computational Biology @humantechnopole.bsky.social! Are you ready to start your own lab? Do you know someone who is? Repost this + share with everyone who might want to know about it. Thanks!!! 🙏 More details below... check it out! 🧵 1/3
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Jonathan Pritchard @jkpritch.bsky.social · 27/01/2025
I posted a couple days ago about our new paper on building causal graphs from genetic associations + Perturb-seq. Here I want to expand on the value of using DIRECTIONAL information contained in LoF burden tests.🧵 [work led by @minetoota.bsky.social ] bsky.app/profile/jkpr...
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Emma Dann @emmamarydann.bsky.social · 26/01/2025
@minetoota.bsky.social set the groundwork for many ongoing projects in @jkpritch.bsky.social and Marson lab. Great to see this out!
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Jonathan Pritchard @jkpritch.bsky.social · 24/01/2025
Very excited about this new work from our lab! Explainer thread coming soon @minetoota.bsky.social
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Giacomo Bartolucci (he) @gbart.bsky.social · 04/01/2025
1/n Some time ago my colleague, excellent cook, and friend Ivan told me: "Cacio e pepe is the recipe that I screw up more often. Let's make a project studying systematically the physics of that sauce". Prepare to get cheesy, I'm glad to share the Cacio e paper preprint: arxiv.org/abs/2501.00536
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Constantin Ahlmann-Eltze @const-ae.bsky.social · 03/01/2025
After 4y in the making, I am super excited that my main PhD project is published 🎉🥳🎉🎉🥳 www.nature.com/articles/s41... LEMUR is a tool to analyze multi-condition single-cell data and model differential expression as a continuous function of the cell-state space. Some highlights⬇️
Overview of the LEMUR steps: (1) subspace alignment, (2) differential expression, (3) DE neighborhoods, (4) pseudobulking.
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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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bioRxiv Genomics @biorxiv-genomic.bsky.social · 16/12/2024
Specificity, length, and luck: How genes are prioritized by rare and common variant association studies www.biorxiv.org/content/10.1101/202…
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Jonathan Pritchard @jkpritch.bsky.social · 11/12/2024
Beautiful work led by Maya Arce from Marson lab reveals a fascinating story about rewiring of a critical gene regulatory circuit in different T cell types: T effectors and Tregs www.nature.com/articles/s41...
nature.com
Central control of dynamic gene circuits governs T cell rest and activation - Nature
Resting and activated T cell states are established by context-specific regulators and dynamic gene circuits.
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Gregor Sturm @grst.bsky.social · 07/12/2024
Formulaic is the go-to way to specify design formulas in Python, e.g. ~treatment + timepoint. To compare sth, one needs to specify a contrast, e.g "on treatment vs baseline". To make this easier, we developed "formulaic-contrasts": formulaic-contrasts.readthedocs.io/en/latest/
# Define model with interaction term
model = MyModel(data, "~ treatment * timepoint")

# compare timepoints
contrast = model.cond(timepoint="on_treatment") - model.cond(timepoint="baseline")

# compare timepoints within drugA only
contrast = (
  model.cond(treatment="drugA", timepoint="on_treatment") - 
  model.cond(treatment="drugA", timepoint="baseline")
)

# compare interaction of timepoint with treatment 
# (= difference of changes between both treatments)
contrast = (
    mod.cond(treatment="drugB", timepoint="on_treatment")
    - mod.cond(treatment="drugB", timepoint="baseline")
) - (
    mod.cond(treatment="drugA", timepoint="on_treatment")
    - mod.cond(treatment="drugA", timepoint="baseline")
)
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Mr. Chau @srirachachau.bsky.social · 16/11/2024
Seeing all my old friends on here again
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scverse @scverse.bsky.social · 16/11/2024
Explore the scverse Starter Pack! Stay informed about the latest scverse events, software updates, and community news. Everything you need to know about foundational tools for single-cell omics analysis in one place. go.bsky.app/UvFMa8d
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Nikhil Milind @nikhilmilind.dev · 12/11/2024
For many traits there is a correlation between the number of duplications or loss-of-function (LoF) mutations someone carries, and their phenotype. Curiously, for most traits, these effects are aligned in the SAME direction. Why?
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