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sgravel.bsky.social

@sgravel.bsky.social
100 followers 61 following 29 posts
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sgravel.bsky.social @sgravel.bsky.social · 22/09/2025
To analyze millions of genetic variants, we need tools that are fast and memory efficient. Some of the most efficient tools have problems with numerical instability on dense sets of snps. Bercovich et al. figured out how to overcome a common source of instability: www.biorxiv.org/content/10.1...
biorxiv.org
LD Matrix Approximations for Scalable Analysis of High-dimensional Genetic Data
Linkage disequilibrium (LD) matrices are an essential part of many statistical genetics methods. However, their high dimensionality makes their computation and storage impractical for large genomic da...
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bioRxiv Genetics @biorxiv-genetic.bsky.social · 20/09/2025
Sex differences in transcription-associated mutagenesis in the human germline www.biorxiv.org/content/10.1101/202…
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sgravel.bsky.social @sgravel.bsky.social · 22/09/2025
To predict genetic risk for an individual, which score should you use? The one learned from a cohort that best matches by ancestry? Or by sex, or age, or environment? Shadi Zabad proposes to combine scores taking all these into account. www.biorxiv.org/content/10.1...
biorxiv.org
Personalized polygenic risk prediction and assessment with a Mixture-of-Experts framework
With the increasing availability of high quality genomic data from diverse cohorts, polygenic scores (PRS) have become a mainstay of genetic analyses of complex traits and diseases. Despite their prol...
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sgravel.bsky.social @sgravel.bsky.social · 11/07/2025
The RCMP surreptitiously collected DNA from random individuals at a Kurdish festival based on the inferred Kurdish ancestry of a suspect, in search of a relative. www.theglobeandmail.com/canada/artic... RCMP: "Police will use all tools available." Let's make this tool unavailable.
theglobeandmail.com
Ontario privacy commissioner urges guardrails on police gravitating toward ‘unbridled genetic surveillance’
Watchdog’s report warns new era of DNA-based criminal investigations calls for clearer rules and more transparency
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sgravel.bsky.social @sgravel.bsky.social · 16/05/2025
Preprint out: A multi-ancestry genetic reference for the Quebec population. 2173 WGS and 29k genotyping arrays in a longitudinal biobank. www.medrxiv.org/content/10.1...
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Aylwyn Scally @aylwyn-scally.bsky.social · 16/05/2025
Delighted to see this paper out, investigating factors affecting human germline mutation in a cohort of 10,000 families from the UK 100k Genomes Project. www.nature.com/articles/s41...
nature.com
The impact of ancestral, genetic, and environmental influences on germline de novo mutation rates and spectra - Nature Communications
Here the authors analyze de novo mutations in >10,000 parent-offspring trios and find that ancestry and smoking independently associate with mutation rate, but that common genetic variants likely c...
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Martin Sauvageau @martinsauvageau.bsky.social · 02/04/2025
If you’re interested in moving your lab to beautiful Montreal Canada, this program offers chairholders funding of up to 1M$ a year for 8 years. See link for details. www.nature.com/naturecareer...
nature.com
Canada Excellence Research Chairs (CERC) - Montréal, Quebec (CA) job with University of Montreal (UdeM) | 12838461
Canada Excellence Research Chairs (CERC)
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sgravel.bsky.social @sgravel.bsky.social · 31/03/2025
My sister Élise will get her doctorate without a single peer reviewed paper! She'll be getting a doctorate, honoris causa, from @uqam.ca for her contributions to children's literature. Her books are often engaged, often silly, and always good reads. Very well-deserved ❤️🍉!
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sgravel.bsky.social @sgravel.bsky.social · 28/03/2025
Une présentation de la Dre Liu à NYU annulée pour faits dérangeants. Son commentaire plein de nuance ici www.ledevoir.com/opinion/idee.... A conference by Dr Liu at NYU cancelled for including unpleasant facts. Her thoughtful commentary (in French): www.ledevoir.com/opinion/idee....
ledevoir.com
Ma présentation a été annulée par l’Université de New York
Mon «alma mater» a préféré jouer de surobéissance préventive pour ne pas froisser le gouvernement Trump.
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sgravel.bsky.social @sgravel.bsky.social · 28/03/2025
Grundler et al propose a new method to infer the geographic position of all our genetic ancestors www.science.org/doi/10.1126/... building on a method by Wohns et al www.science.org/doi/10.1126/.... My thoughts on the approach: www.science.org/doi/epdf/10.....
science.org
A geographic history of human genetic ancestry
Describing the distribution of genetic variation across individuals is a fundamental goal of population genetics. We present a method that capitalizes on the rich genealogical information encoded in g...
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sgravel.bsky.social @sgravel.bsky.social · 17/03/2025
Ancestral Recombination Graphs are an amazing tool to study genetic variation. In this preprint, Alejandro Mejia-Garcia shows that ARGs are surprisingly good at identifying founder variants, and help us pick apart their geographic distribution and phenotypic effect. www.biorxiv.org/content/10.1...
biorxiv.org
Using the ancestral recombination graph to study the history of rare variants in founder populations
Gene genealogies represent the ancestry of a sample and are often encoded as ancestral recombination graphs (ARG). It has recently become possible to infer these gene genealogies from sequencing or ge...
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sgravel.bsky.social @sgravel.bsky.social · 05/03/2025
A faculty position in Synthetic biology at Concordia University in Montreal, with possibility of funding from a Canada Research Chair: www.concordia.ca/artsci/about... .
concordia.ca
Canada Research Chair (CRC) Tier II in Synthetic Biology and Biomanufacturing - Concordia University
The department of Biology in the Faculty of Arts and Science at Concordia University invites applications for a tenure-track faculty position with the opportunity to apply for a Tier II Canada Researc...
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sgravel.bsky.social @sgravel.bsky.social · 28/02/2025
Faculty position opening in bioinformatics at the University of Montreal! There is a great bioinfo and comp bio community in Montreal. www.umontreal.ca/carrieres/pr...
umontreal.ca
Professeurs
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The American Journal of Human Genetics @ajhgnews.bsky.social · 29/01/2025
📢New Perspective from Hatchell et al. 📰Experience using conventional compared to ancestry-based population descriptors in clinical genomics laboratories www.cell.com/ajhg/fulltex...
cell.com
Experience using conventional compared to ancestry-based population descriptors in clinical genomics laboratories
While the use of genetically defined population descriptors in human research studies has been proposed to reduce inaccuracies and harms associated with the use of conventional, non-biologically based...
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Reposted by @sgravel.bsky.social
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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sgravel.bsky.social @sgravel.bsky.social · 23/01/2025
Extremely fast bayesian PRS calculation, by Shadi Zabad. Lots of clever tricks to improve memory efficiency, multithreading, and numerical robustness of WGS statgen analyses. www.biorxiv.org/content/10.1....
biorxiv.org
Towards whole-genome inference of polygenic scores with fast and memory-efficient algorithms
With improved Whole Genome Sequencing (WGS) and variant imputation techniques, modern Genome-wide Association Studies (GWASs) have enriched our understanding of the landscape of genetic associations f...
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sgravel.bsky.social @sgravel.bsky.social · 25/03/2024
A beautiful news story on the Silent Genomes Project (in French) ici.radio-canada.ca/info/long-fo...
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sgravel.bsky.social @sgravel.bsky.social · 14/12/2023
I'm getting a massive and sustained uptick in spam emails that are either 1-invitations to submit a book manuscript 2-offers to ghost write book manuscripts for me. Do others see this, or did my email just reach an old spam list? Wondering if this is a new GPT-based ghostwriting model.
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sgravel.bsky.social @sgravel.bsky.social · 13/11/2023
A leading grad school asked to rank a student by "emotional maturity", and options included "top 1%", "Top 3%", etc. I already have all interns compete in the marshmallow delayed gratification experiment, but more than 3% succeed. Help!
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sgravel.bsky.social @sgravel.bsky.social · 31/10/2023
A TT position in biostatistics and medicine at McGill University: mcgill.wd3.myworkdayjobs.com/en-US/mcgill... En français: : mcgill.wd3.myworkdayjobs.com/fr-CA/mcgill...
mcgill.wd3.myworkdayjobs.com
Assistant Professor (Tenure Track), Department of Epidemiology, Biostatistics and Occupational Healt...
Please refer to the How to Apply for a Job (for External Candidates) job aid for instructions on how to apply. If you are an active McGill employee (ie: currently in an active contract or position at ...
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sgravel.bsky.social @sgravel.bsky.social · 30/10/2023
On Friday, @alexandr.bsky.social successfully defended a wonderful thesis on modelling high-dimensional genetic data. A must-read if you are working with UMAP or genetic clustering, or if you just like well-written and thoughtful scientific writing. Congratulations!
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Erik Enbody @erikenbody.bsky.social · 27/10/2023
Have geospatial genomic data and want to hammer out landscape analyses? Check out this new swiss army knife that does it all from @chamberea.bsky.social et al, built to handle California Conservation Genomic Project scale data onlinelibrary.wiley.com/doi/10.1111/...
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sgravel.bsky.social @sgravel.bsky.social · 03/10/2023
TT position in UQ Chicoutimi in genomic medicine. Welcomes human popgen with large genealogies. UQAC hosts the world's best genealogical resource for human popgen and genomic medicine (IMO). www.uqac.ca/emploi/emplo...
uqac.ca
DAD-715 | Professeure régulière ou Professeur régulier en génomique appliquée à la santé (g...
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