Reposted by Travis MallardJoseph D. Deak, PhD @josephdeak.bsky.social · 19/08/2026Join us in New Haven! 022
Reposted by Travis MallardMatt Rosenblatt @matt-rosenblatt.bsky.social · 17/07/2026Pleased to share our new preprint: "Mapping the genetic architecture of human cortical expansion and its links to neuropsychiatric disorders" www.biorxiv.org/content/10.6...biorxiv.orgMapping the genetic architecture of human cortical expansion and its links to neuropsychiatric disordersCortical expansion is a defining feature of human evolution and neurodevelopment, involving the tangential growth and gyrification of the cerebral cortex. Although disruptions to the expansion of the ... 293
Reposted by Travis MallardMatt Rosenblatt @matt-rosenblatt.bsky.social · 17/07/2026(10/15) Importantly, genome-wide genetic correlation only told part of the story. Using MiXeR, we found extensive shared polygenic architecture with many disorders—even when overall genetic correlation was small or absent. 111
Reposted by Travis MallardMatt Rosenblatt @matt-rosenblatt.bsky.social · 17/07/2026(5/15) We then performed a multivariate GWAS of this cortical expansion factor. This identified: 🧬 48 genomic loci 🧬 30 effector genes 🧬 Multiple novel associations that were not genome-wide significant in any individual imaging phenotype. 131
Travis Mallard @wakeworksleep.bsky.social · 13/07/2026Pleased to share duckmapR, an R package offering perceptually uniform, CVD-accessible color maps inspired by my namesake 🦆 This started as a bit of a joke but turned into a fun (multi-)weekend project. Check it out at travismallard.github.io/duckmapR/! 162
Reposted by Travis Mallardjdelafuente.bsky.social @jdelafuente.bsky.social · 05/06/20261/9 🚨 BREAKING OUT OF STEALTH MODE 🚨 Multivariate GWAS in Genomic SEM now runs on a laptop! New preprint + package update: a closed-form analytic solution makes multivariate GWAS ~800× faster, cutting runtimes from hours on HPC clusters to minutes on a personal computer.static.klipy.comThe Predator EmergesALT: The Predator Emerges 13216
Reposted by Travis MallardFinnGen @finngen.bsky.social · 03/06/2026We are pleased to announce the release of FinnGen DF13 results! 🧬 While the number of participants remains unchanged, DF13 incorporates updated health register data, increasing the number of cases across most disease endpoints. Browsing & download instructions here: www.finngen.fi/en/access_re... 053
Reposted by Travis MallardSam Lambert @iamslambert.bsky.social · 20/05/2026Interested in applying multi-omics imputation or TWAS/PWAS approaches to your data? Frustrated by the models being spread across multiple resources? Enter OmicsPred: a centralised resource for genetic prediction of multi-omic traits! 🔗 : www.omicspred.org 📃 : www.medrxiv.org/content/10.6... 11910
Reposted by Travis MallardKonrad @konradjk.bsky.social · 13/05/2026🧬 New preprint! We present an All by All analysis in All of Us: common and rare variant association testing across 392,030 whole genomes and 3,602 phenotypes. 1.337 trillion tests, ~50k significant signals, all publicly browseable. www.medrxiv.org/content/10.6...medrxiv.orgSystematic common and rare variant association testing in 392,030 whole genomes in All of UsLarge-scale genome-wide association studies (GWAS) and rare variant association studies (RVAS) from population biobanks provide valuable resources for gene discovery in complex human traits. We presen... 24623
Reposted by Travis MallardSimon Hammann @simonhammann.bsky.social · 20/04/2026Don't be shy to take on a little two-week side project. These five months will be the most precious three years of your academic journey. 191958537
Reposted by Travis MallardArmin Raznahan @bogglerapture.bsky.social · 09/03/2026🚨🚨New work just out by the truly stellar Will Snyder - revealing rare and common genetic influences on complexity of human cortical folding !! 🚨🚨 👀 Will’s thread ⬇️ for deets, and to follow on @willsnyder.bsky.social Huge congrats to Will & thnx to fabulous collaborators who made this possible. 0117
Reposted by Travis MallardCamille Michèle Williams @cognitivecamz.bsky.social · 11/02/20264/ With such a large and diverse sample, we identified many genes associated with externalizing: Across 1,294 genomic loci and 647 fine-mapped SNPs, we pinpointed 961 effector genes, including known biology (e.g., CADM2, BDNF) and novel discoveries (e.g., SLC17A6, NRN1)! 143
Reposted by Travis MallardCamille Michèle Williams @cognitivecamz.bsky.social · 11/02/2026Our multi-ancestry GWAS of EXTernalizing conditions (ADHD, substance use...) in ~4M people reveals neurodevelopmental risk, drug-repurposing targets, and yields one of the strongest psychiatric polygenic indices yet! 🧬🎉 doi.org/10.64898/202...doi.orgGenomic insights into substance use and disinhibitory disordersExternalizing spectrum disorders- spanning attention-deficit/hyperactivity disorder, conduct disorder, substance use disorders, and other disorders characterized by disinhibition - frequently co-occur... 23618
Reposted by Travis MallardNature @nature.com · 12/11/2025Nature research paper: Rare genetic variants confer a high risk of ADHD and implicate neuronal biology go.nature.com/3LARwjygo.nature.comRare genetic variants confer a high risk of ADHD and implicate neuronal biology - NatureAn analysis of rare genetic variants identifies three genes—MAP1A, ANO8 and ANK2—that have a role in attention deficit hyperactivity disorder (ADHD) and investigates the potential underlying biological mechanisms. 02410
Reposted by Travis MallardAndrew Grotzinger @andrewgrotzinger.bsky.social · 10/12/20251/4 Thrilled to be sharing new work published today in Nature describing the third wave of results from the PGC Cross-Disorder Group. This reflects a massive group effort to examine shared and unique genetic signal across >1 million cases for 14 psychiatric disorders. www.nature.com/articles/s41...nature.comMapping the genetic landscape across 14 psychiatric disorders - NatureGenomic analyses applied to 14 childhood- and adult-onset psychiatric disorders identifies five underlying genomic factors that explain the majority of the genetic variance of the individual disorders... 212351
Reposted by Travis Mallardloic-yengo.bsky.social @loic-yengo.bsky.social · 12/11/2025First time on Bsky and first big announcement! I am excited to announce that our new study explaining the missing heritability of many phenotypes using WGS data from ~347,000 UK Biobank participants has just been published in @Nature. Our manuscript is here: www.nature.com/articles/s41....nature.comEstimation and mapping of the missing heritability of human phenotypes - NatureWGS data were used from 347,630 individuals with European ancestry in the UK Biobank to obtain high-precision estimates of coding and non-coding rare variant heritability for 34 co... 821870
Reposted by Travis MallardNathan Bell @nateyates.bsky.social · 14/10/2025When do machine learning models actually outperform standard polygenic scores? 🤔 In our new preprint, we benchmark how non-additive genetic effects (i.e, dominance deviations) shape polygenic prediction across simulated and UK Biobank traits. 👉 www.medrxiv.org/content/10.1... 🧵 1/6medrxiv.orgBenchmarking non-additive genetic effects on polygenic prediction and machine learning-based approachesPolygenic scores (PGSs) are widely used to translate genome-wide association study (GWAS) findings into tools for genetic risk prediction. Most current approaches assume additive effects, yet the cont... 182
Reposted by Travis MallardJoseph D. Deak, PhD @josephdeak.bsky.social · 24/09/2025Some recent work led by @peterjonghona.bsky.social and myself at @yaleschoolofmed.bsky.social looks at environmental, psychiatric, and genetic predictors of alcohol use disorder. Online today at The American Journal of Psychiatry (@apapsychiatric.bsky.social): psychiatryonline.org/doi/10.1176/... 063
Reposted by Travis MallardTed Schwaba @tedmond.bsky.social · 02/09/2025I'm looking for a PhD student to do some trailblazing at the frontier of personality genomics and lifespan gene-environment transactions (start Fall 2026)! If you want to work with me: psychology.msu.edu/graduatestud... (PS @drmeltemyucel.bsky.social is taking a student too, in moral psych/dev!) 13029
Reposted by Travis MallardW. Joel Schneider @w-joel-schneider.bsky.social · 20/08/2025Now on CRAN, ggdiagram is a #ggplot2 extension that draws diagrams programmatically in #Rstats. Allows for precise control in how objects, labels, and equations are placed in relation to each other. wjschne.github.io/ggdiagram/ar... 1018074
Reposted by Travis MallardJonathan Sebat @sebatlab.bsky.social · 16/07/2025The field of neuroscience views the goal of human genetics as "finding genes". This is an outdated view. In whole genome studies of rare variants, finding genes is the easy part. The more interesting and important goal is to map out the causal pathway from genes to brain function to cognitive traits 29530
Reposted by Travis MallardGerome Breen @psychgenomics.bsky.social · 17/06/2025Excited 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 14624
Reposted by Travis MallardAbdel Abdellaoui @dr-appie.bsky.social · 10/06/2025Examining the sensitivity for environmental influences by conducting a GWAS on differences between identical twins - very clever design! Out now in @nathumbehav.nature.com : www.nature.com/articles/s41... 1174
Reposted by Travis MallardTed Schwaba @tedmond.bsky.social · 20/05/2025Extremely 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... 515370
Reposted by Travis MallardTed Schwaba @tedmond.bsky.social · 07/03/2025Out today, our method for comparing multivariate genetic architecture across groups of people, called Genomic Structural Invariance: www.nature.com/articles/s41... (feat: @tuckerdrob.bsky.social @michelnivard.bsky.social @andrewgrotzinger.bsky.social @mijke.bsky.social @jorsmo.bsky.social et al.)nature.comComparison of the multivariate genetic architecture of eight major psychiatric disorders across sex - Nature GeneticsGenomic structural invariance, an extension of genomic structural equation modeling, identifies similarities and differences between males and females in the genetic architectures of eight psychiatric... 14719
Reposted by Travis MallardMark James Adams @markjamesadams.bsky.social · 14/01/2025New study from the @pgcgenetics.bsky.social: Multi-ancestry GWAS of MDD in over half a million cases and 4 million controls. www.cell.com/cell/fulltex...cell.comTrans-ancestry genome-wide study of depression identifies 697 associations implicating cell types and pharmacotherapiesTrans-ancestry GWAS of major depression identifies 697 genetic variants and 308 genes, implicating neural and molecular mechanisms and drug repurposing opportunities. 22318
Reposted by Travis MallardNa Cai @caina89.bsky.social · 27/12/2024Last work tweet of 2024 (maybe 😉): I, Ken Kendler, Brad Verhulst, @jorsmo.bsky.social and @andrewgrotzinger.bsky.social et al in the Psychiatric Genomics Consortium Cross Disorder Group (PGC-CDG) wrote a review on challenges studying cross disorder (psych) genetics: www.nature.com/articles/s41...nature.comAssessment and ascertainment in psychiatric molecular genetics: challenges and opportunities for cross-disorder research - Molecular PsychiatryMolecular Psychiatry - Assessment and ascertainment in psychiatric molecular genetics: challenges and opportunities for cross-disorder research 22410
Reposted by Travis MallardCaroline Wright @carolinefwright.bsky.social · 02/12/2024Finally, the DDD outcomes paper is fully published - it took many people and many years, but we definitely had an impact on patient care! Genetic diagnoses changed management for >28% of patients, and connected families with support groups, key resources, and reproductive counseling bit.ly/3Zy0Dpq 03714
Reposted by Travis MallardEmilie Wigdor @emiliewigdor.bsky.social · 20/11/2024📣 Big news! Our tag-team effort on common variants in rare neurodevelopmental conditions is now out in Nature 📣 Co-first authoring with the brilliant Qinqin Huang🌟—proof that teamwork does make the dream work. 💪 www.nature.com/articles/s41...media.tenor.coma couple of cartoon characters standing next to each other with one wearing a purple earringAlt: a couple of cartoon characters standing next to each other with one wearing a purple earring 1115847
Reposted by Travis MallardGraham Coop @gcbias.bsky.social · 19/11/2024Just posting this to #popgen Here's a link to my notes on population & quantitative genetics: github.com/cooplab/popg... Hoping to extend it more after the winter holidays, as I'm just finishing up teaching the undergrad version of class.github.comReleases · cooplab/popgen-notesPopulation genetics notes. Contribute to cooplab/popgen-notes development by creating an account on GitHub. 12360158
Reposted by Travis MallardMichel Nivard @michelnivard.bsky.social · 15/11/2024Lots of new arrivals in the psychiatric and statistical genetics starterpack, time to browse it again to find your old friends go.bsky.app/9643dwo 2143