Theo Hirsch @tz-hirsch.bsky.social · 16/09/2026Happy to be involved in organizing the HET Congress (formerly GFF), which is back after a 6-year break! Join us in Paris on Dec 3–4 for experimental & translational hepatology. 📢 Abstracts due Oct 12 🌍 Website in French, all talks in English www.het-congres.fr 000
Theo Hirsch @tz-hirsch.bsky.social · 06/07/2026To our knowledge, this is among the few examples where the evolutionary history of a pediatric cancer could be reconstructed from gametogenesis to tumorigenesis. Many thanks to all co-authors and collaborators for helping unravel this molecular puzzle. doi.org/10.1016/j.jh... 010
Theo Hirsch @tz-hirsch.bsky.social · 06/07/2026Trisomy 18 is a recognized risk factor for hepatoblastoma, but the responsible locus has remained unknown. Because only part of chromosome 18 was duplicated, we could substantially narrow the candidate region associated with HB predisposition. 120
Theo Hirsch @tz-hirsch.bsky.social · 06/07/2026The rearrangement was present in only ~10% of normal liver cells and blood cells, yet in 100% of tumor cells. This allowed us to reconstruct how developmental mosaicism evolved into a clonal hepatoblastoma. 100
Theo Hirsch @tz-hirsch.bsky.social · 06/07/2026How do we know the rearrangement arose before fertilization? Haplotype analysis revealed three chromosome 18 haplotypes, supporting a pre-zygotic origin of the rearrangement. Mosaicism therefore resulted from embryonic rescue rather than from a post-zygotic event. 110
Theo Hirsch @tz-hirsch.bsky.social · 06/07/2026Most chromosomal mosaicisms arise after fertilization. We report a child with hepatoblastoma carrying a chromosome 18 rearrangement that instead originated before fertilization. Multi-omics analyses revealed its evolution from gametogenesis to cancer. doi.org/10.1016/j.jh... 113
Theo Hirsch @tz-hirsch.bsky.social · 27/05/2026So proud of @longpan.bsky.social, PhD work now out in @natcomms.nature.com Please read his thread below 🧵👇 To me, this is the most comprehensive molecular classification of HCC available today. Want to explore multiomics data of 529 HCCs? Try our interactive app: 🔗 zucmanlab.com/hccsubtype/ 121
Reposted by Theo HirschRandall Munroe @xkcd.com · 22/07/2025Replication Crisis xkcd.com/3117/ 284842653
Theo Hirsch @tz-hirsch.bsky.social · 15/06/2025Check out my editorial about immune exclusion in hepatoblastoma and a possible role of beta-catenin: www.sciencedirect.com/science/arti... 040
Theo Hirsch @tz-hirsch.bsky.social · 07/05/2025Thank you @easlnews.bsky.social for giving me the opportunity to present our work on hepatoblastoma genomics and future therapeuties in Amsterdam, together with my mentor @zucmanrossi.bsky.social @crcordeliers.bsky.social 030
Reposted by Theo Hirschihuhepatolyon.bsky.social @ihuhepatolyon.bsky.social · 15/04/2025🔙 on our Hepatology and Liver Transplantation Days! 🤝 We had the pleasure of welcoming @tz-hirsch.bsky.social for a presentation titled: Evolution of Hepatoblastoma: From #Liver Development to Chemoresistance. 🧫 His talk sparked dynamic discussions during the session on #hepatic #pathogenesis. 022
Theo Hirsch @tz-hirsch.bsky.social · 08/04/2025Thank you @ihuhepatolyon.bsky.social for the invitation and the opportunity to present our team work on hepatoblastoma evolution, in a nice castle in Lyon! #FunGeST @crcordeliers.bsky.social 020
Reposted by Theo HirschCentre de Recherche des Cordeliers @crcordeliers.bsky.social · 03/04/2025🚀 C'est parti pour le Young Investigators Mentoring Symposium au CRC, organisé par le consortium GENIAL en collaboration avec le laboratoire de @zucmanrossi.bsky.social. Une occasion de favoriser l'échange, la collaboration et la visibilité des talents émergents dans le monde de la recherche! 031
Theo Hirsch @tz-hirsch.bsky.social · 20/03/2025Great scientific day about mosaicism 👾 at @institutimagine.bsky.social including inspiring talks from Serge Romana and Peter Campbell 000
Theo Hirsch @tz-hirsch.bsky.social · 13/03/2025Thrilled to reconnect with colleagues from around the globe at the SIOPEL meeting in Cardiff! Working together to better understand and treat childhood liver cancer. 🌍 @crcordeliers.bsky.social 010
Reposted by Theo HirschChildhood Cancer Data Lab @cancerdatalab.bsky.social · 21/01/2025Tools like our Single-cell #PediatricCancer Atlas (ScPCA) Portal make data widely available and easier for researchers to use for their own experiments. Currently, you can explore and download data from 700 samples across 55 cancer types at scpca.alexslemonade.org! 163
Reposted by Theo HirschJohanna Joyce @johannajoyce.bsky.social · 20/01/2025Re-upping these two #CancerResearch 🧪 starter packs for any new arrivals go.bsky.app/FEoaJMc go.bsky.app/6EcjWNA Together they include PIs, oncologists, students, postdocs, journals, patient advocates, and organizations supporting cancer research 🧪🔬⚕️ Both are full - sorry I can't add any more 😅 0308
Reposted by Theo HirschHattie Chung @hattaca.bsky.social · 18/12/2024Excited to share our lab's first preprint: we used spatial transcriptomics to dissect how aging disrupts the cycling ovary! 🧵 This was an incredible team effort w/ @jennifergarrison.bsky.social #TammyLan @davidsebfischer.bsky.social #AlisonKochersberger #RuthRaichur #SophiaSzady 310934
Theo Hirsch @tz-hirsch.bsky.social · 04/12/2024I ran a half marathon and I analyse whole genome sequencing data, does that count? 110
Reposted by Theo HirschNav @naveed-ishaque.bsky.social · 03/12/2024Try out SpatialLeiden for identifying spatial domains/clusters in your #SpatialTranscriptomics data: www.biorxiv.org/content/10.1... github.com/HiDiHlabs/sp... It's as easy as Leiden, but as performant as the best in class. Give it a try and let us know if it works for you!biorxiv.orgSpatialLeiden - Spatially-aware Leiden clusteringClustering can identify the natural structure that is inherent to measured data. For single-cell omics, clustering finds cells with similar molecular phenotype after which cell types are annotated. Le... 272
Reposted by Theo HirschJudith Favier @judithfavier.bsky.social · 28/11/2024My first post on Bluesky ! I officially announce that after 15 years at the PARCC HEGP, the Favier Lab has moved today to the Centre de Recherche des Cordeliers. We are very exited to be part of such a prestigious institute ! A new era begins!🤩 3133
Reposted by Theo HirschNuria Lopez-Bigas @nlbigas.bsky.social · 27/11/2024Only a subset of patients respond to immunotherapy Why? Which ones? We conducted an unbiased analysis of response biomarkers and found that hundreds of possible biomarkers collapse into five latent, orthogonal factors that underlie immunotherapy response. www.nature.com/articles/s41... 413246
Reposted by Theo HirschJohanna Joyce @johannajoyce.bsky.social · 25/11/2024Women are under-represented at senior levels in #academia globally, & across all #science 🧪 disciplines, as shown by these "scissor-shaped curves" ✂️ So how can we ever achieve #gender #equality? We discuss various strategies in this #Cell Commentary #WomeninSTEM www.cell.com/cell/fulltex... 🧵 1/ 361191596
Reposted by Theo HirschNuria Lopez-Bigas @nlbigas.bsky.social · 25/11/2024Children who develop two independent tumors during childhood are extremely rare We wanted to see if our genomic technologies could shed light into those exceptional cases. Read about it in this recent paper: tinyurl.com/yt9m584d 25521
Theo Hirsch @tz-hirsch.bsky.social · 25/11/2024A paradigm-shifting concept 😮 When there’s no mutated target for your CAR-T cells, why not target the wild-type and mutate all non-cancer cells to protect them? www.science.org/doi/10.1126/...science.orgTo target, to escape, perchance to cure: Borrowing a page from cancer’s playbook, scientists learn to evade their own therapiesBorrowing a page from cancer’s playbook, scientists learn to evade their own therapies 000
Reposted by Theo HirschNuria Lopez-Bigas @nlbigas.bsky.social · 25/11/2024We recently announced a dual new release of intOGen and boostDM Computational analysis of 33,218 tumor genomes to identify cancer genes and driver mutations ➡️ Compendium of Cancer Driver Genes - www.intogen.org ➡️ In Silico Saturation Mutagenesis of Cancer Genes - www.intogen.org/boostdm 08333
Reposted by Theo HirschPeng V. Wu, MD, PhD @pengvwu.bsky.social · 20/11/2024Happy to be here & share our work on hepatoblastoma - using transcriptomics and patient-derived tumoroids to identify embryonic biliary transcription factor SOX4 as a modifier of Wnt activation & proliferation - published today in #NatComms @natureportfolio.bsky.social www.nature.com/articles/s41...nature.comA developmental biliary lineage program cooperates with Wnt activation to promote cell proliferation in hepatoblastoma - Nature CommunicationsEpigenetic causes of intra-tumoural heterogeneity are crucial in paediatric cancers with low mutation rates, such as hepatoblastoma. Here, the authors characterise transcriptional heterogeneity in hep... 0185
Reposted by Theo HirschChristian Frezza @frezzalab.bsky.social · 24/11/2024Evolving cell states and oncogenic drivers during the progression of IDH-mutant gliomas - Nature Cancer 🧪 www.nature.com/articles/s43...nature.comEvolving cell states and oncogenic drivers during the progression of IDH-mutant gliomas - Nature CancerWu et al. perform single-cell analyses to explore the switch from low-grade to high-grade isocitrate-dehydrogenase-mutant glioma and show that it is characterized by oligodendrocyte progenitor cell-li... 04915
Reposted by Theo HirschOlivier Saulnier @olivier-saulnier.bsky.social · 24/11/2024Let's build a starter pack for childhood cancer research. Please send a message to be added! 🎗️ go.bsky.app/Tpd9QnM 2913827
Theo Hirsch @tz-hirsch.bsky.social · 21/11/2024Congrats, it seems really interesting! Just for information, I struggle to get the pdf from biorxiv ("Highwire Fatal Error") 110
Reposted by Theo HirschElizabeth McKenna @elizsmckenna.bsky.social · 20/11/2024NOTCH1 Drives Sexually Dimorphic Immune Responses in Hepatocellular Carcinoma - by Katherine Lindblad1, @amaialujambio.bsky.social and colleagues doi.org/10.1158/2159... 2243
Reposted by Theo HirschInigo Martincorena @imartincorena.bsky.social · 20/11/2024Resharing here a recent X post. In this preprint, we introduce an improved version of NanoSeq, a duplex sequencing protocol with <5 errors per billion bp in single DNA molecules, and use it to study the somatic mutation landscape of oral epithelium in >1000 people. 1/ www.medrxiv.org/content/10.1...medrxiv.orgSomatic mutation and selection at epidemiological scaleAs we age, many tissues become colonised by microscopic clones carrying somatic driver mutations ([1][1]–[10][2]. Some of these clones represent a first step towards cancer whereas others may contribu... 28838
Reposted by Theo HirschFabian Theis @fabiantheis.bsky.social · 20/11/20241/ 🧬 Single-cell genomics reveals biological variations beyond cell types. Unveiling these in separate latent dim’s is known as disentanglement. Led by @AmirAliMoinfar, we develop DRVI to learn nonlinear, disentangled & interpretable latent spaces. biorxiv.org/content/10.1101/2024.11.06.622266v1 313737
Reposted by Theo HirschEric Topol @erictopol.bsky.social · 20/11/2024—Please give me an A.I. that automatically detects, interprets all types of medical. images (scans, retina, endoscopy, skin) that I can interact with, can integrate data from other sources, saves a lot of time, and improves accuracy —Sure, here it is www.nature.com/articles/s41... 722532
Theo Hirsch @tz-hirsch.bsky.social · 19/11/2024Visited my old high school today to talk to students about fundamental research🧪 I must have convinced them that I’m passionate about my job because they asked me if I was paid during my post-doc :) 000
Reposted by Theo HirschRenato Ostuni @ostunilab.bsky.social · 17/11/2024With the deluge of new friends - if you are or know someone who is a looking for a position as computational scientist (any level) in #pancreaticcancer, #macrophages #spatialbiology #singlecell... we might have something for you. Will also consider wet lab ppl, send email if interested. pls repost! 03324
Reposted by Theo HirschKing L Hung @kinglhung.bsky.social · 18/11/2024Cancer cells often harbor oncogenes outside chromosomes on extrachromosomal DNA (ecDNA), which is unevenly inherited by dividing cells. We reported in Nature last week that collectives of ecDNAs are inherited together by dividing cancer cells. 1/ www.nature.com/articles/s41...nature.comCoordinated inheritance of extrachromosomal DNAs in cancer cells - NatureCooperative species of extrachromosomal DNAs are coordinately inherited through mitotic co-segregation. 28320
Reposted by Theo HirschWilliam Hill @drwilliamhill.bsky.social · 18/11/2024More data highlighting how cell of origin and lineage plasticity may alter lung cancer phenotype. Elegant story exploring basal cells in SCLC www.biorxiv.org/content/10.1...biorxiv.orgBasal cell of origin resolves neuroendocrine-tuft lineage plasticity in cancerNeuroendocrine and tuft cells are rare, chemosensory epithelial lineages defined by expression of ASCL1 and POU2F3 transcription factors, respectively. Neuroendocrine cancers, including small cell lun... 181
Reposted by Theo HirschStephen Turner @stephenturner.us · 18/11/2024A gentle introduction to pangenomics academic.oup.com/bib/article/25/6/b… 19626
Reposted by Theo HirschSantiago Carmona 🧬 🖥️ 🧑🏾🔬 @carmonation.bsky.social · 17/11/2024Cancer cell states: Lessons from ten years of single-cell RNA-sequencing of human tumors. Itay Tirosh & Mario L. Suva www.sciencedirect.com/science/arti...sciencedirect.comCancer cell states: Lessons from ten years of single-cell RNA-sequencing of human tumorsHuman tumors are intricate ecosystems composed of diverse genetic clones and malignant cell states that evolve in a complex tumor micro-environment. S… 0338
Theo Hirsch @tz-hirsch.bsky.social · 17/11/2024Thanks for your starter packs! Could you add me to the next one please? 010
Reposted by Theo HirschJohanna Joyce @johannajoyce.bsky.social · 14/11/2024Intravenous and intracranial GD2-CAR T cells for H3K27M+ diffuse midline gliomas Incredible study now out in Nature, with long-term remission for pediatric glioma Michelle Monje, Crystal Mackall et al Well done to all the authors for this true tour de force! 🧪⚕️🩺 www.nature.com/articles/s41... 16211