Colm Ryan
colmr.bsky.social
Colm Ryan
@colmr.bsky.social
Systems biology | Bioinformatics | Cancer | Genetic interactions
https://cancerdata.ucd.ie/
(he / him)
Another genetic interaction map of DNA repair factors! I think that makes 5 GI maps (including preprints) of DNA Damage / Repair related factors? Potentially enough to do some systematic comparisons. www.sciencedirect.com/science/arti...
Uncovering genetic interactions in the DNA repair network in response to endogenous damage and ionizing radiation
Genomic integrity relies on a complex network of DNA damage response (DDR) pathways that repair endogenous and exogenous lesions, yet how individual f…
www.sciencedirect.com
January 23, 2026 at 4:59 PM
Reposted by Colm Ryan
Great new work from @colmr.bsky.social predicts a cancer dependency map for paralogs: doi.org/10.64898/202....
doi.org
January 23, 2026 at 11:33 AM
Reposted by Colm Ryan
New preprint on technologies to scale up CRISPR screens.

We use them to map 665,856 pairwise genetic perturbations and outline a path to comprehensive interaction mapping in human cells.

We also introduce an approach for cloning lentiviral libraries with billions of elements.
January 20, 2026 at 1:42 PM
Reposted by Colm Ryan
very sad news. Peer Bork was one of the leaders of our field, a wonderful scientist, and he's much too young to be gone. www.embl.org/news/embl-an...
In remembrance of Peer Bork  | EMBL
EMBL and its community are deeply saddened by the death of Peer Bork, the organisation’s Interim Director General.
www.embl.org
January 16, 2026 at 6:33 PM
Enjoying 'Why Machines Learn' by Anil Ananthaswamy, including this anecdote highlighting that there's always more that *could* be in a PhD but that you have to draw a line somewhere. Guyon here is Isabelle Guyon, who was later key to the development of SVMs (especially the kernel trick)
January 9, 2026 at 4:09 PM
Great to see this out, collaboration with the Bond lab @sysbioire.bsky.social to understand consequences of EZH2 mutation in T-acute lymphoblastic leukaemia (T-ALL). Congrats to @lefeivret.bsky.social @cosmintudose.bsky.social and other authors not on bluesky!

ashpublications.org/bloodadvance...
Reduced PRC2 function causes asparaginase resistance in T-ALL by decreasing WNT pathway activity
Key Points. Reduced PRC2 function in T-ALL is associated with asparaginase resistance that is linked to reduced WNT/STOP pathway activity.Asparaginase resi
ashpublications.org
December 5, 2025 at 11:15 AM
Replacing my still functioning 2017 Mac because it's no longer compatible with our two factor authentication software (preventing me logging on to any work related system). This really doesn't seem optimal.
November 28, 2025 at 3:05 PM
Reposted by Colm Ryan
#Postdoc alert! We are looking for motivated individual with experience in computational systems biology to join our NetworkCommons initiative to benchmark and democratise network contextualisation methods across multiple applications. Deadline Dec 17th link here: tinyurl.com/yrrzxa94
Postdoctoral fellow - Petsalaki Group - NetworkCommons
Your group The Petsalaki, Saez-Rodriguez (EMBL-EBI) and Korcsmáros (Imperial College) groups develop cutting-edge computational and AI approaches to unravel cellular signalling and gene regulation fro...
tinyurl.com
November 26, 2025 at 5:05 PM
Reposted by Colm Ryan
Last chance to register. Hurry Up!
🧬 Excited to announce the 2nd Euro Cancer DepMap Symposium bringing together leading minds in functional genomics, cancer vulnerabilities, AI, CRISPR and anti-cancer target discovery.📍Join us in Milan for cutting-edge science, open discussion & collaboration. #EuroDepMap #CancerResearch #CRISPR
November 3, 2025 at 1:50 PM
Reposted by Colm Ryan
Anyone with a lower h-index than me is ineffectual, while anyone with a higher h-index is just better at playing the game and cutting corners. I'm sorry, that's just how numbers work!
I am completely against the use of citation metrics to evaluate scientists. But if your h-index is less than mine, you kinda have do what I say. I don't make the rules.
October 24, 2025 at 8:23 AM
Reposted by Colm Ryan
🧵1/Exciting news in cancer epigenetics! Our latest research, "AEBP2-Directed H3K27me2 Defines a Specific Vulnerability in EZH2-mutant Lymphoma", is now available on www.biorxiv.org/content/10.1.... Here's a thread summarizing our findings!👇
#CancerResearch #Epigenetics #Chromatin #Lymphoma
AEBP2-Directed H3K27me2 Defines a Specific Vulnerability in EZH2-mutant Lymphoma
The catalytic subunit of Polycomb Repressive Complex 2 (PRC2), EZH2, is recurrently mutated in 25% of diffuse large B-cell lymphomas (DLBCL), causing increased H3K27me3 and decreased H3K27me2 levels. ...
www.biorxiv.org
October 17, 2025 at 7:11 AM
Reposted by Colm Ryan
Biology is much more complicated than most non-biologists can imagine. And AI is not going to change this anytime soon.
blog.genesmindsmachines.com/p/we-still-c...
We still can’t predict much of anything in biology
Biology is hard. Yes, even for AI.
blog.genesmindsmachines.com
October 7, 2025 at 4:11 PM
Hamda's paper is out: benchmarking different genetic interaction scoring methods for identifying synthetic lethal interactions from combinatorial CRISPR screens.

academic.oup.com/nargab/artic...
Benchmarking genetic interaction scoring methods for identifying synthetic lethality from combinatorial CRISPR screens
Abstract. Synthetic lethality (SL) is an extreme form of negative genetic interaction, where simultaneous disruption of two non-essential genes causes cell
academic.oup.com
September 29, 2025 at 4:11 PM
Reposted by Colm Ryan
We're hiring ! Specifically....we are seeking to appoint a creative and motivated Postdoctoral Training Fellow to study how drug resistance emerges in homologous recombination defective (HRD) breast cancers and how this could be targeted. jobs.icr.ac.uk/vacancies/13...
PDTF - Homologous Recombination Defective Cancers ( Profs Chris Lord and Andrew Tutt) in Chelsea | The Institute of Cancer Research
View details and apply for this PDTF - Homologous Recombination Defective Cancers ( Profs Chris Lord and Andrew Tutt) vacancy in Chelsea . Salary: Dependent on relevant Postdoctoral exp...
jobs.icr.ac.uk
September 19, 2025 at 7:38 AM
Reposted by Colm Ryan
📢 The 2nd European Cancer Dependency Map Symposium is coming!
🗓️ 20 Nov 2025
📍 Human Technopole, Milan
Join us for a one-day dive into:
🔹 Cancer genomics
🔹 CRISPR screening
🔹 AI-driven target discovery
With the patronage of AIRC
🔗 humantechnopole.it/en/trainings...
2nd European Cancer Dependency Map Symposium - Human Technopole
The 2nd European Cancer Dependency Map Symposium is a scientific event open to the national and international scientific community working in computational genomics, pharmacogenomics, and therapeutic ...
humantechnopole.it
September 17, 2025 at 10:05 AM
Reposted by Colm Ryan
🚨 We’re hiring! 🚨 looking for a computational postdoc to lead an exciting project at the intersection of AI, CRISPR, multi-omics, and cancer genomics.
Join us to design the next generation of genetic interaction screens and uncover new synthetic lethalities
www.linkedin.com/jobs/view/42...
Human Technopole hiring Postdoc in Cancer Synthetic Lethality Prediction and AI-Driven Target Discovery in Milan, Lombardy, Italy | LinkedIn
Posted 2:37:53 PM. APPLICATION CLOSING DATE: October 12, 2025Human Technopole (HT) is an interdisciplinary life…See this and similar jobs on LinkedIn.
www.linkedin.com
September 11, 2025 at 4:31 PM
Reposted by Colm Ryan
Pleased that the 2nd part of my PhD is now available as a preprint! Here, we investigated the epigenomic and transcriptomic changes occurring upon PRC2 depletion in AML cells. biorxiv.org/content/10.1.... A thread🧵1/17
Diverse epigenomic mechanisms underpin transcriptional dysregulation in Polycomb-altered acute myeloid leukemia
Background Polycomb Repressive Complex 2 (PRC2) modulates chromatin accessibility and architecture to direct tissue-specific gene expression. PRC2 function is frequently altered in cancer by loss-of-f...
biorxiv.org
September 9, 2025 at 1:30 PM
Reposted by Colm Ryan
Doomscrolling pause to chat CRISPR libraries! Preprint describes our new, data-driven approach to combine on-target and off-target predictions much more intelligently for *selecting* guides, which we use to develop our newest Cas9 knockout library, Jacquere. Thread: www.biorxiv.org/content/10.1...
Balancing off-target and on-target considerations for optimized Cas9 CRISPR knockout library design
The continued development of high-dimensional CRISPR screen readouts, such as single-cell RNA sequencing and high-content imaging, necessitates compact libraries to enable functional interrogation at ...
www.biorxiv.org
September 7, 2025 at 5:02 PM
just a month to go until the International Conference on Systems Biology #ICSB2025 kicks off in Dublin, still time to submit a poster abstract!
📢We've extended our poster abstract deadline to Sept 22 to accommodate anyone returning to campus who would still like to submit & attend #ICSB2025! Please spread the word!

Submit your poster abstract here: icsb2025.com

#personalisedmedicine #computationalmodelling
@precisiononcire.bsky.social
September 5, 2025 at 1:23 PM
new from @cosmintudose.bsky.social What happens when tumor suppresor EZH2 is mutated in acute myeloid leukaemia? How does it change transcription, chromatin accessibility & drug response? The Bond lab created CRISPR mutants to find out & Cosmin put it all together www.biorxiv.org/content/10.1...
Diverse epigenomic mechanisms underpin transcriptional dysregulation in Polycomb-altered acute myeloid leukemia
Background Polycomb Repressive Complex 2 (PRC2) modulates chromatin accessibility and architecture to direct tissue-specific gene expression. PRC2 function is frequently altered in cancer by loss-of-f...
www.biorxiv.org
September 5, 2025 at 8:50 AM
Reposted by Colm Ryan
Article by Pádraig Cunningham and Barry Smyth in Communications of the ‪@acm.org‬ analyses the differences in quality and practices of new Open Access and traditional Computer Science journals. bit.ly/41KKQ7s
September 3, 2025 at 11:53 AM
Reposted by Colm Ryan
Delighted that our work on EZH2 dominant negativity in Weaver syndrome is now out in Genes & Development!

This exciting work on chromatinopathies 🧬 was in collab with @adrianbracken.bsky.social and spearheaded by Orla Deevy.

@ucddublin.bsky.social @ucd-sbbs.bsky.social

www.ucd.ie/newsandopini...
UCD co-lead breakthrough discovering genetic mechanism driving Weaver syndrome
www.ucd.ie
August 27, 2025 at 11:15 AM
Reposted by Colm Ryan
Final year PhD students, I know you’re desperately trying to finish experiments/revisions/submissions/write a thesis & just survive - but please spare a few minutes to apply to your dream postdoc labs.

It easily takes A YEAR from first contact, even if everything goes to plan on both sides.
August 27, 2025 at 9:35 AM