Dylan Williams @dylwil.bsky.social · 19/08/2026Reminder to sign up for our in-person short course on Mendelian randomisation at UCL next month, places still available. Great learning opportunity for anyone in or entering epidemiology or statistical genetics and wanting to add more strings to bow for causal inference. Sign up via link below. 020
Dylan Williams @dylwil.bsky.social · 18/08/2026One month till our Dementia Research Showcase at @ucl.ac.uk ! Free registration here: www.eventbrite.co.uk/e/ucl200-dem... Capped off with screening of BBC doc 'Jennings vs Alzheimer's' with brilliant panel Q&A. Sign up for that here: www.eventbrite.co.uk/e/ucl200-dem... 131
Dylan Williams @dylwil.bsky.social · 22/05/2026New preprint (and shameless rhetorical question use) in collab with @neilmdavies.bsky.social Commentary on attributable fractions that approach 100%, with lessons for epidemiologists, statistical genetics, etc. More context in thread... #episky zenodo.org/records/2034...zenodo.orgAttributable fractions approaching 100%: irrelevant, improper, or informative?We recently calculated attributable fractions (AFs) suggesting that up to 92.7% of Alzheimer’s disease may not occur without the contribution of risk alleles in the gene APOE. Among commentators who w... 111
Reposted by Dylan WilliamsConceicao Bettencourt @saobettencourt.bsky.social · 08/05/2026Join us next week for the @DEMONNetworkUK #Genetics & #Omics meeting 🧬 📅 Thursday 14 May ⏰ 2:30 PM (UK time) Delighted to welcome @dylwil.bsky.social as our invited speaker: 👉 “Considering the case for #gene #therapy to address #Alzheimer’s disease” DM for details. #Dementia 021
Dylan Williams @dylwil.bsky.social · 05/05/2026Last few places available for our new in-person short course in genetic & molecular epidemiology at University College London, 19th-21st May. Link for registering and more info below... onlinestore.ucl.ac.uk/conferences-...onlinestore.ucl.ac.ukD79 Molecular Epidemiology | UCL Online StoreAbstract A wide range of disciplines, including epidemiology, psychiatry, and the biomedical sciences, increasingly use genetic and molecular data to study 020
Dylan Williams @dylwil.bsky.social · 22/04/2026Our in-person Mendelian randomisation course is back at University College London this autumn! Join us in Bloomsbury, 15th-17th Sept 2026 Tutors: @emmylooroll.bsky.social, me & @neilmdavies.bsky.social Guest lecturer: Eleanor Sanderson, U.Bristol Sign up: onlinestore.ucl.ac.uk/conferences-...onlinestore.ucl.ac.ukD79 Mendelian Randomization 2026 | UCL Online StoreAbstract This course covers the fundamental developments in Mendelian randomization and gives practical explanations about how to apply MR to applied resea 111
Dylan Williams @dylwil.bsky.social · 13/04/2026A couple of months ago, I discussed our recent paper on APOE on NPR's Science Friday podcast. Available to hear here or in the usual apps for podcast streaming: www.sciencefriday.com/segments/alz...sciencefriday.comHow One Gene Affects Alzheimer’s RiskAn epidemiology study finds variations in one gene, APOE, play a major role in determining the risk of Alzheimer’s disease. 000
Dylan Williams @dylwil.bsky.social · 05/02/2026Clarifying the scope of gene editing for Alzheimer's disease prevention In response to "Heritable polygenic editing: the next frontier in genomic medicine?" by Visscher et al in Nature last year. zenodo.org/records/1849...zenodo.orgClarifying the scope of gene editing for Alzheimer's disease preventionVisscher et al. recently published a thought-provoking analysis to summarise the prospects of heritable gene editing for reducing the incidence of various chronic diseases in populations in Nature. Am... 100
Dylan Williams @dylwil.bsky.social · 14/01/2026Stressing to public the overlapping roles of both environment and genes is fine...it is naive scientific responses like the one pictured (cited by the Mail) we took issue with. Taking away risk broadly will remove disease (at population level). Tho we could consider gene therapy over magic to do so 010
Dylan Williams @dylwil.bsky.social · 13/01/2026My fave commentary on our paper in the Mail last week Interested to know what @alucassen.bsky.social uses as a definition of causation though! Here's mine: ajph.aphapublications.org/doi/full/10.... Further reading WRT the topic: zenodo.org/records/1796... 121
Reposted by Dylan Williamsshibs @drshibley.bsky.social · 10/01/2026Well done to our colleague @dylwil.bsky.social 061
Dylan Williams @dylwil.bsky.social · 09/01/2026Out now!! www.nature.com/articles/s44... Intro to this paper pictured below Huge thanks to collaborators @neilmdavies.bsky.social, @emmylooroll.bsky.social at @uclbrainscience.bsky.social & Sami Heikkinen and Mikko Hiltunen at @uniuef.bsky.social ... #endalz #episky #medsky 197
Dylan Williams @dylwil.bsky.social · 08/01/2026Important review by great colleagues in @uclbrainscience.bsky.social 083
Dylan Williams @dylwil.bsky.social · 06/01/2026I'm starting a thread on misunderstandings about the role of APOE in Alzheimer's disease / dementia, from the POV of epidemiology / statistical genetics. I will add to this sporadically over time... #endalz #episky #medsky 2195
Dylan Williams @dylwil.bsky.social · 17/12/2025"Understanding apolipoprotein E as a predominant cause of Alzheimer’s disease" Preprint: zenodo.org/records/1796... Key takeaways below Thx to coauthors @emmylooroll.bsky.social @neilmdavies.bsky.social & N.Mukadam at DOP @ucl.ac.uk Funding @alzheimersresearchuk.org #endalz #episky #medsky 134
Dylan Williams @dylwil.bsky.social · 16/12/2025Beware submiting to Scientific Reports... this is what the Research Square page for our article looks like. Yet to get a first decision on it, several months after peer reviews apparently came in and EIGHT after the transfer For-profit publishing racket, which doesn't even bother to publish 030
Dylan Williams @dylwil.bsky.social · 08/12/2025@gwascatalog.bsky.social in your study browser, could you plse add a column showing case Ns next to total N for GWAS of diseases? The largest GWAS listed for diseases are now often numerous analyses of biobanks, many with small case Ns. More informative GWAS from case-control consortia get buried 240
Reposted by Dylan WilliamsSave the Children UK @savechildrenuk.bsky.social · 01/12/2025🚨 NEW: 45% of UK adults agree that scrapping the two-child limit is the most effective way to tackle child poverty. When the public get more info about the two-child limit, they are in favour of it being scrapped, which is the action the UK Govt correctly took at the Budget. More: bit.ly/48K2WKD 052
Reposted by Dylan WilliamsNeil Davies @neilmdavies.bsky.social · 13/10/2025📢 Registration is open for Causal Inference in Practice — a 3-day short course at UCL 🗓️ 18–20 February 2026 Taught by me, @kdiazordaz.bsky.social & Peter Martin. Learn to estimate causal effects from observational data. 👉 www.ucl.ac.uk/brain-scienc... #CausalInference #Epidemiology #DataScienceucl.ac.ukCausal Inference in Practice Short CourseThis course covers the latest developments in causal inference methods and provides practical explanations for applying them to real research questions. 131
Dylan Williams @dylwil.bsky.social · 30/09/2025Do any pre-print servers for biomedical sciences accept Perspective or Comment articles? Most seem to refuse these types of M/S. I'd like to give some draft articles indexed / searchable presence whilst they get reviewed (& likely rejected) by journals, i.e. not just posting them to Github 000
Reposted by Dylan WilliamsMichel Nivard @michelnivard.bsky.social · 19/09/2025Apply to do a PhD with me, Laura Corbin, Gareth Hawkes and George Davey Smith ( @mendelrandom.bsky.social) in Bristol on identifying rare effects on health using new and innovative methods. Amazing team, great educational environment, lovely city. Forward to your undergrads wrapping up!gw4biomed.ac.ukShining a light on the un-common to identify novel health risk-factors - GW4 BioMed MRC DTPProject Code MRCPHS26Br Nivard Project Type Dry lab Research Theme Population Health Science Project Summary Download Summary Complex traits such as body mass index and height are influenced by a mixt... 11718
Reposted by Dylan WilliamsEmma Anderson @emmylooroll.bsky.social · 08/09/2025Last chance to sign up for our MR course next week folks! 001
Dylan Williams @dylwil.bsky.social · 12/08/2025Just came across this graphical abstract for a paper. No idea what they were going for with the whale and rainbow, but at least it is very calming 282
Dylan Williams @dylwil.bsky.social · 01/08/2025Finally grappled w/ UKB-RAP to update a UK Biobank analysis in past week. Happy to report my sanity is (just about) still intact and I only wasted ~£8 of credit (£5 on a job left running overnight, £3 on other incompetence). Facilitated greatly by ukbrapR by @lcpilling.bsky.social, big thanks Luke! 110
Reposted by Dylan WilliamsRichard Sever @richardsever.bsky.social · 30/07/2025I have an idea… journals.plos.org/plosbiology/...journals.plos.orgPlan U: Universal access to scientific and medical research via funder preprint mandatesPreprint servers are a low-cost mechanism for providing free access to research findings, and can also significantly accelerate research itself by making results available immediately. This Perspectiv... 1204
Dylan Williams @dylwil.bsky.social · 22/07/2025Withdraw support for the current government of Israel 000
Reposted by Dylan WilliamsThe Independent @the-independent.com · 21/07/2025BREAKING | Israel depriving Gazans of ‘human dignity’, says UK and 25 other countries in call to end war nowindependent.co.ukUK and 25 other countries accuse Israel of depriving Gazans of ‘human dignity’David Lammy has joined other foreign ministers in condemning the Israeli government for depriving Gazans "of human dignity" as they called on the war to "end now". 65492184
Reposted by Dylan WilliamsEmma Anderson @emmylooroll.bsky.social · 25/06/2025Fabulous work by Phazha Bothongo! 2 years and several near mental breakdowns for us both in the making! 🧠 Causes and consequences of vascular dementia across the life course: Evidence from a UK Biobank phenome-wide and Mendelian randomization study 🧠 www.medrxiv.org/content/10.1...medrxiv.orgCauses and consequences of vascular dementia across the life course: Evidence from a UK Biobank phenome-wide and Mendelian randomization studyBackground Vascular dementia (VaD) is the second most common cause of dementia, yet its risk factors and biological mechanisms remain poorly understood. Objective To identify causes and consequences ... 194
Reposted by Dylan WilliamsNeil Davies @neilmdavies.bsky.social · 19/06/2025Are you looking to learn how to conduct and interpret Mendelian randomization studies? You can register now for our in-person short course at UCL. With @emmylooroll.bsky.social and @dylwil.bsky.social 16th-18th September 2025. Details here: www.ucl.ac.uk/brain-scienc...ucl.ac.ukMendelian randomization short courseThis course covers the fundamental developments in Mendelian randomization and gives practical explanations about how to apply MR to applied research questions. 033
Dylan Williams @dylwil.bsky.social · 11/06/2025I love this paper ... so many insights, inc importance of ubiquitous exposures, a clear explanation for flaws of heritability (and analysis of variance more generally), and clarification of differences in "causes of cases & causes of incidence" by Rose, which I always thought obtuse and misleading 000
Reposted by Dylan WilliamsMichel Nivard @michelnivard.bsky.social · 19/05/2025This is VERY big genetics & health news, Regeneron (Pharmaceutical company with v strong genetics in medicine arm) is going to buy 23andme. investor.regeneron.com/news-release...investor.regeneron.com 23318
Dylan Williams @dylwil.bsky.social · 28/04/2025Our in-person Mendelian randomisation course is back at University College London this autumn. Join us in Bloomsbury, 16th-18th September 2025. Tutors: Emma Anderson, Dylan Williams, Neil Davies Guest lecturer: Eleanor Sanderson onlinestore.ucl.ac.uk/conferences-...onlinestore.ucl.ac.ukD79 Mendelian Randomization | UCL Online StoreAbstract This course covers the fundamental developments in Mendelian randomization and gives practical explanations about how to apply MR to applied resea 132
Dylan Williams @dylwil.bsky.social · 24/04/2025Dislike this statement about AD by CARE programme grant invitation from @wellcomeleap.bsky.social and Lisa Mosconi. i) Commonplace misconception that "genetics = unmodifiable"... #episky #medsky 122
Dylan Williams @dylwil.bsky.social · 14/04/2025One year later ... a major update to our manuscript showing that most Alzheimer's disease is attributable to the gene APOE. We expanded it to analyses of four studies, now with data on about 460,000 people in total..... www.medrxiv.org/content/10.1... #Alzheimers #Dementia #Epidemiology #EpiSkymedrxiv.orgThe proportion of Alzheimer's disease attributable to apolipoprotein EObjective To estimate the proportions of Alzheimer's disease (AD) and all-cause dementia burden attributable to the common risk alleles ε3 and ε4 in the APOE gene Design Genetic association analyses i... 265
Reposted by Dylan WilliamsYair Wallach @yairwallach.bsky.social · 09/04/2025"We knew what we were doing. We knew about the indescribable suffering we were causing. We knew about the crimes we were committing, in real time. We knew, and declared for all the world to hear that this was what justice looked like, this was the face of morality." 8300126
Reposted by Dylan WilliamsThe Dementia League @dementialeague.bsky.social · 29/03/2025🚨 New lifetime dementia risk & 2060 US case projections 🧠 This new 2025 study from John Hopkins updates lifetime risk estimates of dementia for the US. Data projects that 42% of adults who are alive at age 55 will develop dementia before they die, assuming current trends continue. 🧵 1/2 1146
Dylan Williams @dylwil.bsky.social · 18/03/2025Been enjoying the focus on APOE at #AAICAPOE meeting by @alzassociation.bsky.social this week. Here's my poster showing most AD is attributable to APOE variation in four large studies 031
Dylan Williams @dylwil.bsky.social · 01/12/2024Delighted to start as a Senior Fellow for Alzheimer's Research UK this month! As are my two chief mascots (help from Bluey here to keep them still). My research will look for ways to combat the bad effects of a protein called apoE, which is the predominant cause of Alzheimer's disease 3110