Philip Leftwich
@philipleftwich.bsky.social
440 followers 440 following 100 posts
Assoc Prof @uniofeastanglia Scientist Biology / Genetics / Rstats
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philipleftwich.bsky.social
I definitely argued this case for my teddy bear up until I was about six years old...
Reposted by Philip Leftwich
drgdavidson.bsky.social
📢🚨Please share! We’re hiring! 📢🚨Have a strong interests in wildlife ecology and gut microbiome bioinformatics? 3 year Senior Research Associate for NERC Pushing the Frontiers grant. Apply here: vacancies.uea.ac.uk/vacancies/18.... Informal enquiries welcome! drgldavidson.github.io/ACMEresearch
Reposted by Philip Leftwich
carnage4life.bsky.social
A new paper in The Lancet, one of the world’s foremost peer reviewed medical journals, estimates that USAID prevented 91 million deaths across 133 countries over 20 years.

The paper estimates that Elon Musk’s DOGE funding cuts to USAID will lead to 14 million deaths by 2030 (4.5 million children).
Evaluating the impact of two decades of USAID interventions and projecting the effects of defunding on mortality up to 2030: a retrospective impact evaluation and forecasting analysis
USAID funding has significantly contributed to the reduction in adult and child mortality across low-income and middle-income countries over the past two decades. Our estimates show that, unless the a...
www.thelancet.com
philipleftwich.bsky.social
I think I've met everyone 🤔
philipleftwich.bsky.social
Excited to be a part of this new paper with Alphey Lab- out in pre-print.
Multiplexing overrides resistance for #genedrive in Anopheles stephensi
www.biorxiv.org/content/10.1...
Multiplexing gene drives have high homing efficiencies
Reposted by Philip Leftwich
flodebarre.bsky.social
This week, the capital of Evolution is Barcelona!
Over 1900 evolutionary biologists are gathering for the biennial meeting of the European Society for Evolutionary Biology, coorganised with its Spanish sister #ESEB2025.
Over 540 of us are on Bluesky! You can use these starter packs to connect: 1/n
Photo of the welcome address at ESEB2025
philipleftwich.bsky.social
This week I will having to be contending with some serious FOMO...
Reposted by Philip Leftwich
flodebarre.bsky.social
Folks going to #ESEB2025 : To help people connect on Bluesky, I've started making starter packs. Here is a first one with the names that were available when I started.

Ping me if you want to be included in the next one!
Reposted by Philip Leftwich
weare.rladies.org
Let’s talk about career change. I loved listening to @minecr.bsky.social on The Test Set this week.

podcasts.apple.com/us/podcast/m...

She intially trained as an actuary, determined that she didn’t love that, and decided to do a PhD in statistics.
Mine Çetinkaya-Rundel: Teaching in the AI era — and keeping students engaged
Podcast Episode · The Test Set by Posit · 08/11/2025 · 55m
podcasts.apple.com
Reposted by Philip Leftwich
hansonmark.bsky.social
A reminder you/your lab can support FlyBase at Cambridge through the following link. Every bit helps. Please share if you yourself can't donate.

www.philanthropy.cam.ac.uk/give-to-camb...
Reposted by Philip Leftwich
hansonmark.bsky.social
Devastating and idiotic.

It is a no-brainer for the UK to provide emergency funds to host the entirety of FlyBase out of Cambridge and pick up the bill on these salaries. Every individual in FlyBase is an international treasure any country would be lucky to have.
drglam.bsky.social
I just got the notice that all the FlyBase people at Harvard, including me, will be laid off on October 12. I'm devastated.
philipleftwich.bsky.social
Takeaway: Gene drive success depends not just on design, but on natural population variation & rigorous analysis.
We must study drives across multiple species + account for real-world genetics to deploy them effectively.
Differing homing rates produce very different rates of population change
philipleftwich.bsky.social
This contrasts with Anopheles mosquitoes, where drives seemed highly efficient. But our study shows:
✅ Lower drive efficiency in Culex makes subtle effects easier to spot
✅ Choice of analysis is key — some methods can hide these mismatches in other systems.
#MosquitoControl #Genetics
Standardised effect sizes produce very different observed changes in homing when gene drive efficiencies are generally high, but are more noticeable when efficiencies are lower
philipleftwich.bsky.social
🚨New pre-print🚨
Natural DNA variation can slash CRISPR gene drive efficiency by up to 54% in Culex quinquefasciatus, a major West Nile virus mosquito vector.
<10% mismatch at the target site disrupts copying.
#GeneDrive #CRISPR
(with Tim Harvey-Samuel and Alphey Lab)
doi.org/10.1101/2025...
Alleles that have mismatches compared to designed homology arms produce a significant drop in homing events while overall cleavage rates remain the same
philipleftwich.bsky.social
Thanks for the shout-out.
Can't take credit for the slide though.
I think I would recommend some bootstrapping before picking a rank-based test 😉
philipleftwich.bsky.social
Every time a new edition of this course starts, I get a little nervous.

Even though it always gets great feedback, this is a labour of love, and I want everyone to get the confidence in statistics that is essential for good science.

We start today, let’s go!
#rstats
physaliacourses.bsky.social
📈 Want to strengthen your statistics skills? Join our course with @philipleftwich.bsky.social & learn how to use R for clear, reproducible data analysis — no prior experience required!
🔍 From descriptive statistics to Linear Models, GLMs, and GLMMs, we’ll guide you step by step.
Reposted by Philip Leftwich
evaheinz7.bsky.social
We are still looking for a motivated student to join us in the wonderful world of mosquito microbiome genomies! Funding unfortunately only for UK students for this one. If interested, please send CV & letter of motivation (email in image below) #MicroSky #MicrobiomeSky 💻🧬 🧪Please share widely😊 1/2
evaheinz7.bsky.social
#PhD alert, here @unistrathclyde.bsky.social in the very friendly, diverse, artsy & welcoming city of Glasgow 🏴󠁧󠁢󠁳󠁣󠁴󠁿

Disentangling the functional modules of #mosquito #microbiomes - what puzzle pieces build our #holobionts?

#MicroSky #MicrobiomeSky 💻🧬🧪

More here 😊 www.strath.ac.uk/studywithus/...
Schematic overview of the PhD; combining bacterial genomes from a large collection to analyse adhesins, metabolic potential, bacterial warfare; and compare to other arthropod symbiontes and design a minimal microbiome.
philipleftwich.bsky.social
I've started giving the package to my students. We start with a clean dataset, they get to decide how 'awful' to be to their partner when making it messy. Then swap datasets to clean. They then evaluate each other's performance.
Reposted by Philip Leftwich
nrennie.bsky.social
I'm really looking forward to delivering this talk about creating data for teaching and testing using the {messy} package for the @royalstatsoc.bsky.social Manchester Group!

📅 Thursday 10 July 2025
⌚ 1 - 2PM BST
📌 Online (everyone welcome!)

Register: rss.org.uk/training-eve...

#RStats #StatsEd
Screenshot of event page with the same details as in the post
Reposted by Philip Leftwich
uea-ucu.bsky.social
⁉️Why are students at UEA supporting members of staff on strike?
📽️Watch this video to hear from the amazing students who came to join lecturers and professional services staff on the picket line.
📣Stop the cuts! #SaveUEA
philipleftwich.bsky.social
As seen on LinkedIn😂
Learning R in 2025...
Gibberish AI generated image
Reposted by Philip Leftwich
earlhaminst.bsky.social
💬 “Europe and the UK have in general been very good at recognising the need for FAIR data and #metadata, so I would say we are in a very strong position.”

📄 #AI and life sciences: why #FAIR #data is essential 💻 🗃️ 🧬
AI and life sciences: why FAIR data is essential
DNA sequencing has unlocked massive amounts of complex information. AI can help us analyse this. But it’s only effective with the right data.
buff.ly