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Varun Warrier

@vw1234.bsky.social
543 followers 344 following 39 posts

Interested in genetics, development, and brain. Associate prof of neurodev. research at Cambridge.

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Reposted by Varun Warrier
Jeff Spence @jeffspence.github.io · 07/11/2025
How do GWAS and rare variant burden tests rank gene signals? In new work @nature.com with @hakha.bsky.social, @jkpritch.bsky.social, and our wonderful coauthors we find that the key factors are what we call Specificity, Length, and Luck! 🧬🧪🧵 www.nature.com/articles/s41...
nature.com
Specificity, length and luck drive gene rankings in association studies - Nature
Genetic association tests prioritize candidate genes based on different criteria.
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Jonathan Pritchard @jkpritch.bsky.social · 07/11/2025
Excited to share our latest work on the factors that determine what genes we find (and don't find!) in GWAS and burden tests. We describe a critical concept that we call *specificity*. Led by Jeff Spence and Hakhamanesh Mostafavi:
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Varun Warrier @vw1234.bsky.social · 01/10/2025
And an article for the general public by @universitypress.cambridge.org www.cam.ac.uk/research/new...
cam.ac.uk
Study reveals genetic and developmental differences in people with earlier versus later autism diagnosis
Researchers find different genetic profiles related to two trajectories that autistic children tend to follow. One linked to early diagnosis, and communication
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Varun Warrier @vw1234.bsky.social · 01/10/2025
And a very helpful and informative commentary on the paper by @tuckerdrob.bsky.social www.nature.com/articles/d41...
nature.com
Early- and late-diagnosed autism are genetically distinct
Analyses of symptoms and genomic data indicate that autism that manifests in early childhood is distinct from autism that is diagnosed later in development.
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Varun Warrier @vw1234.bsky.social · 01/10/2025
This was a fantastic collaboration with lots of people including @hilarycmartin.bsky.social @jakobgrove.bsky.social, Experts by Experience, and several others who I can't seem to find on this app. Article: www.nature.com/articles/s41...
nature.com
Polygenic and developmental profiles of autism differ by age at diagnosis - Nature
A study of several longitudinal birth cohorts and cross-sectional cohorts finds only moderate overlap in genetic variants between autism that is diagnosed earlier and that diagnosed later, so they may represent aetiologically different conditions.
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Varun Warrier @vw1234.bsky.social · 01/10/2025
I add that earlier and later diagnosed autism are not valid diagnostic terms and what we are looking at is (one) gradient. Also genetics explains only a fraction of the variance, with most studied factors explaining < 10%. We have FAQs in the Supplementary where we address common questions.
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Varun Warrier @vw1234.bsky.social · 01/10/2025
Furthermore, the later diagnosed autism genetic factor is genetically more correlated with ADHD, depression, and PTSD, suggested complex gene-environment correlations and an urgent need for support.
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Varun Warrier @vw1234.bsky.social · 01/10/2025
In work led by the talented Xinhe Zhang out today in Nature, we challenge this idea. We show the developmental and genetic profile of autism differs substantially by age at diagnosis. Later diagnosed autism is not a milder version, but a different version who need acceptance and support.
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Varun Warrier @vw1234.bsky.social · 01/10/2025
It is now clear that more people are being diagnosed as autistic in their teens and as adults than in childhood. A prevailing theory is that those diagnosed later have "milder" form of autism, and later diagnosis entirely due to social factors.
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Andrea Ganna @andganna.bsky.social · 30/09/2025
🧬💥 Do the genetics that make you develop a disease also help you survive it? Not much. Our new study in Nature Genetics including 9 disease and 7 biobanks shows: • Susceptibility variants ≠ survival • PRSs for onset weak at predicting progression • Lifespan PRS predicts survival better
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Emmanuel A. Stamatakis @estamatakis.bsky.social · 25/09/2025
We are delighted to announce the launch of a new Master's Programme in Brain Health and Disease within the Department of Clinical Neurosciences at the University of Cambridge. Applications are now open! @camneurodept.bsky.social www.clinical-neuroscience.cam.ac.uk/education/ta...
clinical-neuroscience.cam.ac.uk
Taught MPhil in Brain Health and Disease | Clinical Neurosciences
Our one-year Master’s programme in Brain Health and Disease: Clinical Neurosciences offers an exceptional opportunity for students to engage with the forefront of clinical neuroscience through a dynam...
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Varun Warrier @vw1234.bsky.social · 23/09/2025
Ah yes, of course! I agree :)
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Varun Warrier @vw1234.bsky.social · 23/09/2025
Although, there is a lot of genetic confounding with parental age associations: increased genetic likelihood for autism -> finding a partner later in life -> having children later in life. www.nature.com/articles/s41... pubmed.ncbi.nlm.nih.gov/27213288/
pubmed.ncbi.nlm.nih.gov
Risk of psychiatric illness from advanced paternal age is not predominantly from de novo mutations - PubMed
The offspring of older fathers have higher risk of psychiatric disorders such as schizophrenia and autism. Paternal-age-related de novo mutations are widely assumed to be the underlying causal mechani...
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Varun Warrier @vw1234.bsky.social · 23/09/2025
We have an opening for a research assistant/associate to study the genetics of neurodevelopmental traits in the general population, and explore their overlap with neurodevelopmental diagnoses. Funds available until Jan 2027. lnkd.in/eHEcccwC Please circulate widely.
lnkd.in
LinkedIn
This link will take you to a page that’s not on LinkedIn
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Reposted by Varun Warrier
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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Armin Raznahan @bogglerapture.bsky.social · 23/08/2025
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Varun Warrier @vw1234.bsky.social · 23/08/2025
Very nice method that exploits collider bias to identify independent contributors to outcomes.
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Reposted by Varun Warrier
Steve Smith @fmrib-steve.bsky.social · 22/08/2025
Latest processing of UK Biobank brain imaging data - now with 82,000 usable first-scan datasets. Correlating brain IDPs with 13,000 non-imaging variables gives a rich manhattan-stye plot. 324,000 Bonferroni-significant associations.
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Nicky Whiffin @nickywhiffin.bsky.social · 18/08/2025
Isn't genetics cool??? Within only 145 nucleotides(!) of a non-coding RNA (RNU4-2) - different variants in distinct regions / structures cause three distinct disorders!!! (all discovered within the last 18 months) 🤯🤓🧬❤️
Schematic of the U4 and U6 snRNAs with coloured annotations to note nucleotides linked to different disorders:
- Teal in the T-loop and Stem III for ReNU syndrome (Chen et al. Nature 2024 and Greene et al. Nature Medicine 2024)
- Red for variants causing a recessive NDD in Stem II, the k-turn and Sm protein binding sites (De Jonghe et al. medRxiv 2025 and Rius & Blakes medRxiv 2025)
- Yellow for the central loop and Retinitis pigmentosa (Quinodoz et al. medRxiv 2025)
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Michael Love @mikelove.bsky.social · 18/08/2025
Excited to share this preprint from first author Jon Rosen, a postdoctoral fellow in the @klmohlke.bsky.social lab and my lab. We examine eQTL study sample size and how this affects signal discovery and rates of colocalization with GWAS. www.biorxiv.org/content/10.1...
biorxiv.org
Higher eQTL power reveals signals that boost GWAS colocalization
Expression quantitative trait locus (eQTL) studies in human cohorts typically detect at least one regulatory signal per gene, and have been proposed as a way to explain mechanisms of genetic liability...
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Alex Fornito @alexfornito.bsky.social · 17/08/2025
Interested in Network hubs, cortical hierarchies, and gradients? Ever wonder where they come from? Check our latest review, where we cover different approaches to mapping hubs, models for their evolution, and mechanisms for how they develop: osf.io/preprints/os...
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Mental Health Platform @mhplatform.bsky.social · 12/08/2025
ECR Workshop: Proteomics & Mental Health 🧠 9 Oct | Edinburgh | £25 Hosted by @mqmentalhealth.bsky.social & @datamind.bsky.social in partnership with MHP. Meet the Speakers! Programme & bios online – register: rebrand.ly/ecr-workshop
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Itai Yanai @itaiyanai.bsky.social · 09/08/2025
Science doesn’t need to be pretty and go according to plan; it just needs to lead to a discovery. If doesn’t have to be done alone or together with someone else; there just needs to be a discovery. It doesn’t need to happen fast or slow; just as long as there’s a discovery, then everybody is happy.
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Hans Fredrik Sunde @hfsunde.bsky.social · 04/08/2025
Our new paper is out today! 🎉 In it, we use administrative register data to document how psychiatric disorders are strongly linked to parental income, from childhood far into adulthood. Furthermore, we attempt to separate causation and selection using kinship-based models. doi.org/10.1111/jcpp...
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Awais Aftab @awaisaftab.bsky.social · 19/07/2025
Psychiatric Genetics Beyond Heritability: Q&A with Michel Nivard ( @michelnivard.bsky.social ) “We look for genes as a means to an end—biology, epidemiology, and etiology of complex human outcomes.” www.psychiatrymargins.com/p/psychiatri...
psychiatrymargins.com
Psychiatric Genetics Beyond Heritability: Q&A with Michel Nivard
We look for genes as a means to an end—biology, epidemiology, and etiology of complex human outcomes.
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Tabea Schoeler @tabeasch.bsky.social · 08/07/2025
🚨New preprint is out! How do genetic effects on complex traits change with age? In this work, we compare different approaches to obtain age-varying genetic effects, and show how design and modeling choices can impact the conclusions we draw. shorturl.at/17snd A thread 🧵👇
shorturl.at
Design and model choices shape inference of age-varying genetic effects on complex traits
Understanding how genetic influences on complex traits change with age is a fundamental question in genetic epidemiology. Both cross-sectional (between-subject) and longitudinal (within-subject) appro...
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Joanna @drjmartin.bsky.social · 08/07/2025
New pre-print! ✨ Antecedents and outcomes of a late ADHD diagnosis in females: www.medrxiv.org/content/10.1... TLDR: This study finds evidence that a delay in ADHD diagnosis has profound and clear consequences by adolescence and this disproportionately disadvantages females (people who are AFAB).
medrxiv.org
Antecedents and outcomes of a late attention deficit hyperactivity disorder (ADHD) diagnosis in females
Females receive an attention deficit hyperactivity disorder (ADHD) diagnosis at an older age than males. We examined the antecedents and outcomes of later (age 12+) diagnosis in females using data fro...
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Olivia Wootton @olivia-wootton.bsky.social · 03/07/2025
New preprint!🚨 "“The Contribution of Common and Rare Genetic Variation to Emotional and Behavioural Symptoms in Childhood and Adolescence” is out on medRxiv. www.medrxiv.org/content/10.1... Thread 👇
medrxiv.org
The Contribution of Common and Rare Genetic Variation to Emotional and Behavioural Symptoms in Childhood and Adolescence
Genetic factors influence vulnerability to common mental health conditions, but their role in early-life mental health remains understudied. We analysed genotype array and exome sequence data from two...
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Abdel Abdellaoui @dr-appie.bsky.social · 21/06/2025
Studying the genetics of intelligence measures can help us understand the neurobiology of cognition and neurodevelopmental conditions 🧬🧠 We estimated missing intelligence test scores in @ukbiobank.bsky.social to reduce bias and boost power. Preprint: www.medrxiv.org/content/10.1... Thread 👇
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Tamsin Ford @tamsinford.bsky.social · 20/06/2025
I am proud to have led and contributes to the experts in evidence advisory group- alot of hard work went into this www.england.nhs.uk/2025/06/nhs-...
england.nhs.uk
NHS England » NHS England responds to ADHD Taskforce interim report
An independent taskforce set up to tackle challenges in attention deficit hyperactivity disorder (ADHD) care has published its interim report and recommendations today (Friday 20 June 2025). The repor...
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Eimear Kenny @eimearekenny.bsky.social · 17/06/2025
📢 Just posted: Our preprint introducing SPC — Spectral Components — is now live on medRxiv! Led by Dr. Ruhollah Shemirani and years in the making, this method offers a robust, scalable way to adjust for recent population structure in genomic analyses. 🔗 www.medrxiv.org/content/10.1... 1/9
medrxiv.org
SPC: a SPectral Component approach to address recent population structure in genomic analysis
Population structure is a well-known confounder in statistical genetics, particularly in genome-wide association studies (GWAS), where it can lead to inflated test statistics and spurious associations...
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Marcella Montagnese @mmontagnese.bsky.social · 17/06/2025
New preprint out! We mapped brain vulnerability in Alzheimer’s using MIND networks + population modelling. Put this together with a brilliant team @raibethlehem.bsky.social @sarahmorganuk.bsky.social and many more still making their way to Bluesky 🧠 doi.org/10.1101/2025.06.10.25328978
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Gerome Breen @psychgenomics.bsky.social · 17/06/2025
Excited about our new preprint: 1st successful genome-wide study of >61,000 panic attack and 29,000 panic disorder cases. www.medrxiv.org/content/10.1... We find 17 associations & evidence that peripheral neurons in eye, lungs and heart are involved in panic & other psychiatric disorders 1/n
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Eivind Ystrom @eivindy.bsky.social · 13/06/2025
🧵 THREAD: Preprint from @chrisrayner.bsky.social reveals how to fix selection bias in the Norwegian #MoBa study using population-wide registry data! For the first time, we can quantify and adjust for selection bias in this major epidemiological resource. Spread the good news! osf.io/preprints/os...
osf.io
OSF
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Eivind Ystrom @eivindy.bsky.social · 10/06/2025
1/13 New preprint out! We developed methods to test a key assumption in family-based genetic studies: that siblings don’t genetically influence each other’s traits. Spoiler: mostly they don’t, but there’s a twist with ADHD ratings at age 3 👶 osf.io/preprints/ps...
t.co
https://osf.io/preprints/psyarxiv/b4c76_v1
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Mike Inouye @mikeinouye.bsky.social · 05/06/2025
📣 Latest from the lab: Performance of deep-learning-based approaches to improve polygenic scores www.nature.com/articles/s41... Its thought deep learning will substantially improve PGS but the reality is MANY have tried but no/little gain has been seen so far. Here we report our negative results.
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Melanie de Wit @mmdewit.bsky.social · 31/05/2025
(1/9) 📣 OUT NOW! 📣 So excited to share that our systematic review and meta-analysis on the autism polygenic score is now published in JAACAP Open @jaacapjournals.bsky.social. doi.org/10.1016/j.ja... A (long) thread of our main findings ⤵️
doi.org
Redirecting
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Ted Schwaba @tedmond.bsky.social · 20/05/2025
Extremely excited to share the first effort of the Revived Genomics of Personality Consortium: A highly-powered, comprehensive GWAS of the Big Five personality traits in 1.14 million participants from 46 cohorts. www.biorxiv.org/content/10.1...
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Xuyu Qian @qianxuyu.bsky.social · 14/05/2025
Today in @nature.com , we report a spatial single-cell atlas of human cortical development, revealing surprisingly early specification of human cortical layers and areas. We built an interactive browser to explore the spatial data: walshlab.org/research/cor... Paper link below 👇
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Rafeeque Mavoor @rafeequemavoor.bsky.social · 13/05/2025
🧵5 Top Free Alternatives to BioRender for Scientific Illustrations! These five websites offer free scientific illustrations for biologists. Great for presentations, research papers and other research communication needs. Save and share the post!
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Varun Warrier @vw1234.bsky.social · 14/05/2025
New review on the genetics of schizophrenia, depression, and bipolar disorder. www.nature.com/articles/s41...
nature.com
Genomics of schizophrenia, bipolar disorder and major depressive disorder
Nature Reviews Genetics - Genomic advances have enhanced our understanding of schizophrenia, bipolar disorder and major depressive disorder, revealing genetic architectures and risk mechanisms...
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Abdel Abdellaoui @dr-appie.bsky.social · 13/05/2025
Check out our new OCD GWAS (53,660 cases and 2,044,417 controls) in @natgenet.nature.com 🧬🧠 Genetic risk was associated with excitatory neurons in the cortex and hippocampus. There was much genetic overlap with anxiety, depression, and anorexia. Open access: www.nature.com/articles/s41...
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Angelica Ronald @angelicaronald.bsky.social · 07/05/2025
Our gene discovery project on age at onset of walking is out today! Find the paper here www.nature.com/articles/s41... Huge thanks to the cohorts, collaborators & coauthors, in particular first author Dr Anna Gui 1/n
nature.com
Genome-wide association meta-analysis of age at onset of walking in over 70,000 infants of European ancestry - Nature Human Behaviour
A genome-wide association study of age at onset of walking in over 70,000 infants found 11 significant loci. Age at onset of walking showed SNP heritability of 24%, a reliable polygenic score and gene...
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Cedric Boeckx @cedricboeckx.bsky.social · 02/05/2025
Delighted to share our new preprint, the outcome of many years of collaborative work with Giuseppe Testa’s group, both at the bench & in front of the computer, probing human brain evolution using organoids. We tried something cool, and learned a lot 🧪🧫🧠🧬 [follow 🧵] www.biorxiv.org/content/10.1...
biorxiv.org
Regulatory logic of human cortex evolution by combinatorial perturbations
Comparative genomic studies between contemporary and extinct hominins revealed key evolutionary modifications, but their number has hampered a system level investigation of their combined roles in sca...
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Varun Warrier @vw1234.bsky.social · 30/04/2025
Thank you!!
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Alex Strudwick Young @alextisyoung.bsky.social · 28/04/2025
I am recruiting a quantitative/computational postdoc to my group at UCLA. This is a great opportunity to work on foundational theory, methods, and software in statistical genetics. Link to apply: recruit.apo.ucla.edu/JPF10275. Please repost!
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Varun Warrier @vw1234.bsky.social · 29/04/2025
Many thanks to our wonderful collaborators @raibethlehem.bsky.social , @sofievalk.bsky.social @wanb.bsky.social @jakobgrove.bsky.social and many others not on this app.
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Varun Warrier @vw1234.bsky.social · 29/04/2025
Finally, we assessed the overlap with a range of psychiatric and neurodevelopmental conditions and find robust, moderate genetic correlation between autism and graph network phenotypes, but no overlap with any other conditions tested.
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Varun Warrier @vw1234.bsky.social · 29/04/2025
This suggests structure exhibits a dual-constraint on function - brain shape constrains broad global integration, whereas microstructure impacts more regional specialisation.
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Varun Warrier @vw1234.bsky.social · 29/04/2025
But is there an overlap between brain structure and function, genetically? We find some shared genetics between cortical expansion phenotypes and graph metrics, and between cortical microstructure and graph asymmetry, with Mendelian randomisation suggesting that structure causes function.
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