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John Prensner

@johnprensner.bsky.social
3.5K followers 961 following 548 posts

Pediatric neuro-oncologist, Asst Prof U-Michigan | Cancer researcher | RNA & ribosome enthusiast | Broad Institute, DFCI alum | book & music & tea lover | Dad | Views are mine (he/him). prensnerlab.org

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Reposted by John Prensner
Drummond Lab @drummondlab.bsky.social · 08/09/2026
We are hiring! 🌟 Dept of Biochemistry and Molecular Biology at the University of Chicago is searching for a tenure-track assistant professor. It's a broad search: we want great colleagues doing serious biological work at the molecular scale. Join us! apply.interfolio.com/191981 bcmb.uchicago.edu
A picture of the University of Chicago campus, with downtown Chicago in the distance and Lake Michigan on the horizon. The campus's central quad is pictured, a classical collegiate quad with paths and old trees and stone architecture. It's really pretty and I love it.
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John Prensner @johnprensner.bsky.social · 04/09/2026
Ok so this was super fun to do. Highly recommended. mydialect.us/quiz-standar... It nailed me: Boston MA is the top hit, and nothing else remotely close except for eastern New England. I guess it is that obvious when I speak.
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vincentholst.bsky.social @vincentholst.bsky.social · 13/08/2026
In 2023, @nature.com published 'Papers and patents are becoming less disruptive over time', receiving world-wide media attention. Our Matters Arising, published after a 32 month delay (more on that soon), shows that the reported decline can largely be attributed to dataset artefacts. 🧵
The average CD_5 index per year for Web of Science. The original Park et al. decline (top curve) becomes essentially flat (bottom curve) when removing papers with CD_5=1. Those papers largely correspond to dataset artefacts.
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Cell - a Cell Press journal @cp-cell.bsky.social · 03/07/2026
Now online! A viral ORFeome library for systems-level genetic dissection of host-pathogen interactions
dlvr.it
A viral ORFeome library for systems-level genetic dissection of host-pathogen interactions
A scalable library of ∼13,000 barcoded viral open reading frames from >500 viral species enables functional genomic screens across the virome. Applying this platform identified viral regulators of cellular proliferation, antigen presentation, and interferon signaling. This platform enables systematic exploration of viral protein function.
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Oxford Nanopore @nanoporetech.com · 29/06/2026
Many RNAs originally annotated as non-coding may encode proteins, with signals found across UTRs and overlapping known ORFs. Mike Clark shares how Oxford Nanopore enables this kind of transcript-level insight. Learn more: bit.ly/3SgUa19
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Cedric Boeckx @cedricboeckx.bsky.social · 28/06/2026
Terrific resource, now on @biorxivpreprint.bsky.social: The Vertebrate Genomes Project Phase I: A global reference genome resource 🧪🧬 www.biorxiv.org/content/10.6...
biorxiv.org
The Vertebrate Genomes Project Phase I: A global reference genome resource
The Vertebrate Genomes Project (VGP) aims to produce complete and near-error-free reference genomes for all ∼70,000 extant vertebrate species. Organized in four phases, it progressively targets all ve...
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maxseidel.bsky.social @maxseidel.bsky.social · 19/06/2026
📢 (1/2) Excited to share the first preprint from my PostDoc! We developed UbSeRP to map co-translational ubiquitination in a translatome-wide, revealing thousands of quality control sites, and how they reshape with aging. www.biorxiv.org/content/10.6... #proteostasis #ribosomes #preprint
biorxiv.org
Ubiquitin selective ribosome profiling reveals systematic principles of co-translational quality control
Protein biogenesis is a stress- and error-sensitive process that can lead to nascent protein misfolding and aggregation, challenging cellular proteostasis. Co-translational ubiquitination (CTU) is a c...
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John Prensner @johnprensner.bsky.social · 08/06/2026
For all #DarkProteome #Microprotein #RiboSeq enthusiasts- come join me at #EACR if you are here! I will be talking in the Dark Proteome session today at 2pm!
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Jonathan Pritchard @jkpritch.bsky.social · 01/06/2026
Combined Optical Pooled Screens and Perturb-seq! Great new work by Romain Lopez & Taka Kudo. This is one of a series of papers from our lab (here, with Aviv Regev) using perturbations to interpret human genetics; a key revelation for me is how transferable the mouse perturbs are to human genetics.
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Katherine Aird @airdlab.bsky.social · 27/05/2026
It's time to rewrite reviews-aKG doesn't just regulate demethylation. Work from my lab and @mzspectrum.bsky.social demonstrates a new role for aKG in promoting histone acetylation and DNA repair through regulating carnitine synthesis. Congrats Apoorva Uboveja! www.nature.com/articles/s41...
nature.com
αKG-mediated carnitine synthesis drives DNA repair via histone acetylation - Nature
The metabolite αKG promotes carnitine synthesis and increases site-specific histone acetylation, thereby promoting homologous recombination-mediated DNA repair, which has potential implications f...
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John Prensner @johnprensner.bsky.social · 23/05/2026
Wow what a blockbuster PhD paper by @claradure.bsky.social with @sendoellab.bsky.social . It is a must read! 👇
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Matthieu Chavent @matthchavent.bsky.social · 20/05/2026
Very happy to share our @cbitoulouse.bsky.social perspective article with @jzanet.bsky.social team in @proteinsociety.bsky.social Protein Science: “Sketching microprotein portraits”. onlinelibrary.wiley.com/doi/10.1002/... poke @johnprensner.bsky.social @thomasmartinez.bsky.social #microprotein
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Charlotte Fare @charlottefare.bsky.social · 12/05/2026
RNA imbalance as a hallmark of cellular ageing rdcu.be/fikJl
rdcu.be
RNA imbalance as a hallmark of cellular ageing
Nature Cell Biology - This Perspective highlights the failures of an ageing cell in properly maintaining mRNA health at the various steps of the mRNA life cycle that result in vulnerability to...
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Doudna Lab @doudna-lab.bsky.social · 12/05/2026
New pre-print 📣 “Undruggable” cancer mutations remain very hard to target with current modalities. What if we could instead sense mutant transcripts and convert that recognition into selective cell killing? Check out this work led by postdoc Jingkun Zeng: www.biorxiv.org/content/10.6...
biorxiv.org
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Institut Pasteur | 130 years of biomedical research @pasteur.fr · 12/05/2026
🦠💡 Bacteria have millions of secret weapons against viruses! Researchers used AI to uncover millions of new bacterial proteins likely involved in antiviral defense — suggesting immunity genes make up ~1.5% of the genome, 3× more than thought. 🔗 www.pasteur.fr/en/research-... @audeber.bsky.social
pasteur.fr
Bacteria Have Millions of Secret Weapons Against Viruses
Millions of new proteins with predicted roles in defence against viruses have been identified in bacteria. It was thought that around 0.5% of the average bacterial genome had some involvement in immun...
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Alexis Verger 🧬🧫🧪 @alexis-verger.cpesr.fr · 12/05/2026
😀 see also www.nature.com/articles/s41...
nature.com
RNA-triggered cell killing with CRISPR–Cas12a2 - Nature
Cas12a2 enables RNA-triggered, sequence-specific killing of eukaryotic cells via widespread DNA shredding, allowing selective elimination of cells on the basis of gene expression, including virus-infe...
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Mark Madonna @awesomark.bsky.social · 09/05/2026
#a2council 🧵 A brief history of Ann Arbor isn't a small town anymore
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John Prensner @johnprensner.bsky.social · 06/05/2026
Major new work by the #TransCODE Consortium out today in @nature.com. Read all about our efforts to shed light onto the forgotten areas of the human proteome. #Microproteins #Peptideins #DarkProteome This was a huge global collaboration, in part funded via #NIH www.nature.com/articles/s41... 1/
nature.com
Expanding the human proteome with microproteins and peptideins - Nature
A large-scale proteomics analysis of the dark proteome by the TransCODE Consortium reveals many translated non-canonical open reading frames to encode microproteins and peptideins.
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Cancer Grand Challenges @cancergrand.bsky.social · 06/05/2026
Introducing peptidiens! Congratulations to the TransCODE consortium on this exciting tour-de-force in @nature.com: nature.com/articles/s41... We look forward to seeing what’s next as lead authors Sebastiaan van Heesch and John Prensner take on our dark proteome challenge as part of team ILLUMINE!
nature.com
Expanding the human proteome with microproteins and peptideins - Nature
A large-scale proteomics analysis of the dark proteome by the TransCODE Consortium reveals many translated non-canonical open reading frames to encode microproteins and peptideins.
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Reposted by John Prensner
Sasha Gusev @sashagusevposts.bsky.social · 01/04/2026
Here's a little widget to play with the data across journals (as well as download the raw CSVs). sashagusev.github.io/Genetics_Pub...
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John Prensner @johnprensner.bsky.social · 24/03/2026
*MANUSCRIPT ALERT* Today the TransCODE / GENCODE Phase II catalog of #RiboSeq ORFs came out in @narjournal.bsky.social Check out the most authoritative resource for #DarkProteome discovery. 1/ academic.oup.com/nar/article/...
academic.oup.com
An expanded reference catalog of translated open reading frames for biomedical research
Abstract. Non-canonical (i.e. unannotated) open reading frames (ncORFs) have until recently been omitted from reference genome annotations, despite evidenc
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Martin A. Nuñez @martin-nunez.bsky.social · 14/03/2026
🌐🧪
from random data to a story, using legos
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Maria Alcolea @mariapalcolea.bsky.social · 04/03/2026
🚨 New paper from our lab just published in Nature🚨 www.nature.com/articles/s41... Discover how 🌱 tumour formation is shaped by tissue context from the very beginning. Cancer is not driven by genetics alone ✨Fantastic team led by Greta Skrupskelyte, Eduardo Rojo, @hariajith.bsky.social
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John Prensner @johnprensner.bsky.social · 04/03/2026
So honored to be a part of team ILLUMINE for the new #CancerGrandChallenges for the #DarkProteome. Excited to crack open this new field in cancer biology! Full announcement: www.cancergrandchallenges.org/new-teams-an...
Team ILLUMINE of the Cancer Grand Challenges in New York City in December 2025
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John Prensner @johnprensner.bsky.social · 12/02/2026
All- don't miss the chance to register for the European Association for Cancer Research meeting in Budapest in June. I'll be there if you want to chat about all things microproteins! #EACR #CancerResearch
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Alex Holehouse @alexholehouse.bsky.social · 12/02/2026
Pleased to share the final version of this behemoth of a paper, now finally published. I guess I can retire now? www.nature.com/articles/s41... More functional data, many thousands of words removed, and a few other updates from last year's preprint.
nature.com
Sequence and chemical specificity define the functional landscape of intrinsically disordered regions - Nature Cell Biology
Langstein-Skora, Schmid, Huth et al. propose that intrinsically disordered region functionality can be driven by the interplay between linear binding motifs and contextual chemical characteristics suc...
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Carolyn Bertozzi @carolynbertozzi.bskyverified.social · 11/02/2026
“Success in US science has come from sustained funding and welcoming the best talent from around the world, yet both of these advantages are in decline” www.science.org/doi/10.1126/...
science.org
China turns the tables in biotech
For at least a century, major scientific research initiatives have reliably occurred in the United States, usually in response to geopolitical competition. This helped establish the country’s status a...
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John Prensner @johnprensner.bsky.social · 02/02/2026
Check out the very important topic: how does poverty influence childhood cancer biology and treatment response? wonderful work from Birgit Knoechel and Kira Bona! @huntsmancancer.bsky.social @danafarber.bsky.social www.biorxiv.org/content/10.6...
biorxiv.org
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Xuebing Wu @xuebingwu.bsky.social · 31/01/2026
Does the noncoding genome actually carry more genetic information than coding seqs? Motivated by this question we mutated every bp in the 10kb MYC locus. Results are even more exciting: Decoding the MYC locus reveals a druggable ultraconserved RNA element www.biorxiv.org/content/10.6...
biorxiv.org
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Sri Narasimhan @snarasimhan.bsky.social · 29/01/2026
Today at Cell: A new #HallmarksofCancer review by Doug Hanahan: www.cell.com/cell/fulltex... This review marks 25 years since the original seminal Cell review by Hanahan & Robert Weinberg and its impactful follow up in 2011. @cp-cell.bsky.social @cellpress.bsky.social
cell.com
Hallmarks of cancer—Then and now, and beyond
Hanahan revisits the evolving framework of cancer hallmarks, synthesizing 25 years of conceptual refinement into a multidimensional view of tumor biology. This review highlights how aberrant capabilit...
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John Prensner @johnprensner.bsky.social · 30/01/2026
From the great @xuebingwu.bsky.social and team! Highly recommend 👀
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John Prensner @johnprensner.bsky.social · 27/01/2026
“The power of the people is greater than the people in power” Even at 10F. Ann Arbor this evening.
A protest about ICE in Ann ArborA protest against ICE in Ann Arbor
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John Prensner @johnprensner.bsky.social · 26/01/2026
Systematic analysis of C-termini of small open reading frame-encoded peptides. #Riboseq #proteomics #darkproteome pubs.acs.org/doi/10.1021/...
pubs.acs.org
Systematic Analysis of C-Termini of Small Open Reading Frame-Encoded Peptides in Human Cancer Cell Lines
The C-termini often regulate protein biological functions through specific structures or modifications. Small open reading frame-encoded peptides (SEPs) make up a novel class of gene expression products that participate in various biological activities. Their C-termini have also been found to affect their function, but the polymorphism of SEPs’ C-termini has not yet been systematically elucidated. Using C-terminal proteomics, we identified 3636 C-terminal peptides from 2168 proteins in three human cancer cell lines, including 3364 peptides from 1901 classical proteins and 272 peptides from 267 SEPs. Approximately 20% of all of the identified C-terminal peptides had been reported in previous studies, originating from mRNA alternative splicing or protease cleavage, while more than 85% of the C-terminal peptides from SEPs were novel. Bioinformatics analysis revealed that most new SEP C-termini are likely produced by protease cleavage by the KLK, MMP, and CAT protease families. Others without accurately predicted hydrolysis sites may originate from alternative splicing or protein trimming. The intact and hydrolysis products of some SEPs were verified by immunoblotting. Some cleavage occurs in the predicted domain, which might affect SEPs’ function. This study enriches the SEP sequence information, provides experimental evidence for SEP in vivo processing, and supports the subsequent functional analysis of SEP.
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John Prensner @johnprensner.bsky.social · 24/01/2026
The inside/ outside temperature differential exceeds 75 degrees this morning in Ann Arbor!
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John Prensner @johnprensner.bsky.social · 21/01/2026
Lunch at Cafe du Lys in Geneva today. Magnificent!
Sausage with eggplant with tomato sauce.
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Thomas Norman @normanlab.bsky.social · 20/01/2026
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.
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David Lowry @davidlowry.bsky.social · 16/01/2026
Nice to see strong support in Congress: “In an 82-15 vote, the Senate approved a minibus budget bill to fund agencies involved in science and the environment, among other issues, through Sept. 30. The bill passed in the House last week by a vote of 397 to 28.” www.nbcnews.com/politics/pol...
nbcnews.com
Congress passes bill to fund U.S. science agencies, rebuffing Trump's requested cuts
The Senate voted to provide billions more to NASA, NOAA and the National Science Foundation than the president had asked for.
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John Prensner @johnprensner.bsky.social · 16/01/2026
Time for some fun! A lovely paper on mathematical oncology. 🧪 #Math #Cancer #CANsky www.biorxiv.org/content/10.6...
biorxiv.org
75 Years of Mathematical Oncology
Mathematics has long provided a quantitative framework to interpret cancer biology and treatment. Driven by richer biological and clinical data, the field has evolved into a multidisciplinary and translational endeavor - giving rise to Mathematical Oncology. Yet, the field's strong interdisciplinarity obscures a comprehensive view of its evolution, as well as the boundaries between Mathematical Oncology and adjacent domains. Here, we address this gap through a comprehensive bibliometric analysis spanning 75 years of mathematical research in oncology. Using a manually curated corpus (~1,500 papers) and a large query-based dataset (~19,000 papers), we map the field's conceptual and collaborative development over time. Independent analyses reveal sustained growth, high impact, and pronounced interdisciplinarity, together with a gradual shift from fundamental cancer biology toward therapeutic modeling. This reorientation underpins the emergence of Mathematical Oncology as a distinct field, separate from Systems Biology and Pharmacokinetics / Pharmacodynamics. We show how diverse concepts interlace within Mathematical Oncology, bridging applied mathematics, optimal control, evolutionary theory, and imaging. Collectively, we demonstrate that Mathematical Oncology is not merely the application of mathematics to cancer, but the use of interpretable models integrating clinical, biological, and physical knowledge to improve screening, understand disease evolution, guide therapy, and strengthen forecasting. ### Competing Interest Statement The authors have declared no competing interest. NCI, U54CA274507 Wenner-Gren Stiftelserna/the Wenner-Gren Foundations, WGF2022-0044 Cancer Prevention Research Institute of Texas, RP220225 National Science Foundation, DMS 2436499 MICIU/AEI/10.13039/501100011033 and ERDF/EU, PID2023-146347OA-I00 MICIU/AEI/10.13039/501100011033 and ESF+, RYC2022-036010-I
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John Prensner @johnprensner.bsky.social · 16/01/2026
Ann Arbor- where even the buses love to think about alternative polyadenylation sequences. #RNAsky
Bus with sign that says AAATA
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John Prensner @johnprensner.bsky.social · 15/01/2026
#ChildhoodCancer advocates- This is a powerful piece on the negative impact of Trump administration policies on children with brain cancer, written by a spouse who lived this horror. #DMG/DIPG #ETMR #Medulloblastoma #PEDCAN www.theguardian.com/us-news/ng-i...
theguardian.com
Kids with brain cancer were already in a life and death struggle. Then came Trump
The US president vowed to ‘end childhood cancer’. But his administration is dismantling the search for a cure and sending families scrambling for treatment
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The American Academy of Pediatrics @ameracadpeds.bsky.social · 05/01/2026
Read our full statement by AAP President Dr. Andrew Racine on today’s HHS announcement about the childhood immunization schedule: www.aap.org/en/news-room...
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John Prensner @johnprensner.bsky.social · 04/01/2026
Introducing you all to @mishamehta.bsky.social who has spent tireless hours advocating for children with brain tumors, supporting researchers doing their work, and building community for other families. We are indebted to her: www.youtube.com/watch?v=_r_7... #PEDCan #CanSky #CancerSurvivors
youtube.com
Federal funding cuts to pediatric brain cancer research ‘taking away hope’ from families
YouTube video by PBS NewsHour
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Science Magazine @science.org · 24/12/2025
A new #ScienceAdvances study shows that commercial whaling in the Southern Ocean over the past century reduced the genetic diversity—and possibly the evolutionary fitness—of the region’s humpback whales. scim.ag/4anxPpM
scim.ag
Humpback whale genomes reflect the increased efficiency of commercial whaling
Humpback whale genomes reflect shifts in whaling practices and their potential impact on the animals’ adaptive capacity.
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Agathe Chaigne @agathechaigne.bsky.social · 18/12/2025
My lab is hiring a postdoc (ERC funded)! If you're interested, get in touch!
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John Prensner @johnprensner.bsky.social · 17/12/2025
Wow this is a seriously serious supplementary figure from @cellpress.bsky.social today. Panels A through UU. I get that Cell likes to minimize the number of supplementary figures. But is this really what is happening here? www.cell.com/cell/fulltex...
Figure S7 with panels A through UU
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John Prensner @johnprensner.bsky.social · 29/11/2025
Whoa!
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Debora Marks @deboramarks.bsky.social · 24/11/2025
New paper “Proteome-wide model for human disease genetics” is now live at Nature Genetics: rdcu.be/eRu7K popEVE (pop.evemodel.org) finds the needles in the haystacks of human genetic variation:
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eileen chengyin chow @chowleen.bsky.social · 13/11/2025
The room is almost all elephant. Almost none of it isn’t. Pretty much solid elephant. So there’s no room to talk about it. -Kay Ryan, “The Elephant in the Room” #everynightapoem
THE ELEPHANT IN THE ROOM
Kay Ryan

The room is

almost all

elephant.

Almost none

of it isn't.

Pretty much

solid elephant.

So there's no

room to talk

about it.
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John Prensner @johnprensner.bsky.social · 11/11/2025
So honored to take this position with @wearecbtn.bsky.social and it will be delightful to work on behalf of the pediatric brain tumor community!
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