Anthony J Gill @CaDxPath

The full NHS GALLERI randomized trial data has been released at #ASCO26 by @GrailBio. 142,000 adults provided 3 blood samples over 2 years, for prevalent (baseline) & incident cancers. The trial did not meet its primary endpoint. Lots more data below: mma.prnewswire.com/media/2991283/…

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#ASCO26 Outstanding session on #ctDNA 🩸 🗣️ Great talk @CharlesSwanton ❌ Primary endpoint not met: Not increase of stage III/IV detection 📌 However: ✅ > 20% reduction in stage IV cancers ✅ 16% increase of stage I/II detection ✅ 4-fold ⬆️ in screening @OncoAlert @EORTC @ASCO

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#ASCO26 through an algorithm lens Abstract 102 | GALAXY / CIRCULATE-Japan ctDNA dynamics at 4 and 12 weeks after resection in colorectal cancer This is not just a “ctDNA-positive vs ctDNA-negative” story. It is about timing. In resected stage I–IV CRC, patients who were ctDNA-negative at ~4 weeks but converted to ctDNA-positive at ~12 weeks appeared to derive benefit from adjuvant chemotherapy. By contrast, patients who remained ctDNA-negative at both timepoints had favorable outcomes regardless of ACT. Algorithm lens: One postoperative ctDNA result may not be enough. Serial ctDNA testing could help identify: • patients who may safely avoid unnecessary treatment • patients who need delayed or intensified adjuvant therapy • patients whose molecular relapse emerges before clinical recurrence Important caveat: the converted-positive subgroup was small, and this should not yet be used as a standalone rule. Clinical risk, pathology, timing, assay access, and prospective validation still matter. Bottom line: ctDNA may be most clinically useful not as a single test, but as a dynamic decision tool. @mgfakih @drallysonocean @MPishvaian @GIMedOnc @YJanjigianMD @glopesmd #ColorectalCancer #CRC #ctDNA #ASCO26

From $PSNL ASCO abstracts. Rip out dated Signatera

Early serial ctDNA dynamics resected stage I-IV CRC ➡️observational data GALAXY; tumor informed ➡️1915 pts ctDNA-ve at 4wks ✅persistent -ve:24mth DFS ~85% ➡️~3% +ve (n=56) at 12wks -benefit chemo; more stg 4 ✅serial ctDNA early prognostic info #CRC #ASCO26 @ASCO @OncoAlert

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‼️ Big news in the early detection world: Galleri (a methylation-based multi-cancer detection test) failed to meet its primary endpoint of reduction of stage III/IV cancer diagnosis in a large prospective randomized trial with the NHS. #ASCO2026 - PPV ~50%, and among the false positives, about half (n=404) underwent invasive procedures as part of their workup. 😬 - ~2/3 of people diagnosed with cancer had a negative Galleri test (false negative) - Some early signals of greater benefit in certain cancers but overall not powered for that. - Galleri arm detected more cancers, but the clinical benefit of this is not yet clear. - Important to remember that surrogate endpoints (stage III/IV diagnoses and stage IV diagnoses) do not correlate well with survival in all cancer types. ⭐️ My take: I think this type of cancer detection assay will have clinical value in some context(s), but we still have a ways to go before we know how to use it. Use in higher risk patients? Limit assay to detect only certain cancers? Lots of work to be done. 💪

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#Pathology #Histology #MedicalEducation #DermPath #Pathology #Dermatology #Intsocdermpath #MedEd

The Definitive Map of ASCO 2026 (peer-reviewed edition). No single human alive can/has read all 7k+ abstracts. That is precisely why this map needs to exist. First version (below) had errors. 20+ world-class oncologists reached out (private DMs, pointed corrections, public critiques). We then did 23 rounds of revision in 48 hours. Posting this to correct the record. This new map is the result of machines & experts coming together. Changelog v2 -> v1: ▫️SERENA-6: relabeled from "2L" to 1L ESR1m ctDNA-guided switch (trial's actual innovation) ▫️ ROSELLA: fixed drug (relacorilant, not mirvetuximab) and icon (small molecule, not ADC) ▫️ Silevertinib: corrected geography (Black Diamond/US, not China) and lead indication (non-classical EGFR) ▫️ CHRYSALIS-2: updated to Cohort C 1L atypical EGFR, 41-mo mOS ▫️ Anbenitamab + nab-doc: promoted to practice-changing (1st HER2 bispecific to beat T+P head-to-head) ▫️ EV-304: sharpened — beats gem/cis on EFS+OS+pCR (a 40-year SOC, displaced) ▫️ VIKTORIA-1: PIK3CA-mut, beats alpelisib+fulv, triplet AND doublet ▫️ Scope widened to the full ASCO 2026 cycle (GI · GU · Annual) 💡Machines can extract patterns from 7k abstracts in 15 mins. But, it takes real human expertise closes the last mile. To every oncologist who sent a fix: this map belongs to all of you. <3 @Jori_health ps, if you spot an error, holler at us x.com/mukundiyngr/st…

@cancerNSW is proud to award $7.5 million to new Translational Program Grants led by Professor Paul Keall (@paul_keall) and Professor Anthony Gill (@CaDxPath) from @Sydney_Uni. ➡️ Find out more: cancer.nsw.gov.au/what-we-do/new…

Proud to present our latest article - now available for free download @AJSPjournal Please retweet and download the article. Synopsis: The AJCC ninth edition staging system for colon cancer is not yet current, but there are significant changes proposed. These changes aim to both get rid of the stage 3A paradox (under the eighth edition patients with Stage 3A actually disease do better than Stage 1 and 2) and also to better integrate discontinuous Tumour Deposits (TDs) into staging. What are these proposals and do they work? Free download: journals.lww.com/ajsp/fulltext/…

Well Differentiated Papillary Mesothelial Tumor (WDPMT) #TheJPCNCR #PathTwitter

It was a wonderful to hear that an important clinical trial using neoadjuvant combination immunotherapy in selected glioblastoma brain patients has commenced in the USA. The pioneering work, led in Australia by my colleague Prof Georgina Long and the trial team formation led by Dr Jim Whittle, together with an extensive talented team, deserves huge congratulations for their work and initiating the development of the trial! The first patient, based in the USA where the study is led by Professor Mustafa Khasraw, has commenced trial participation. I hope patients in Australia can participate soon. Well done to everyone from the excellent teams involved. I hope the trial is positive for brain cancer patients! Details of the information available can be found through a link to the Sydney Morning Herald with an article written by Garry Maddox. #glioblastoma #braincancer @ProfGLongMIA @MelanomaAus @WEHI_research @carriesB4BC @BrainCancerCtr @gmaddox @smh @NthSydHealth @COBLH @Sydney_Uni @BickmoreCarrie

1/ Just out in @ModernPathology New study from our group: A distinct variant of aggressive lung carcinoma with peculiar pathologic features. We called these tumors “SAGA” (solid and granular adenocarcinoma) .. sorting them out was in fact a long and winding saga that led to some unexpected insights. 👇 modernpathology.org/article/S0893-… pubmed.ncbi.nlm.nih.gov/41580239/

@ProfRAScolyer Go you good thing! Looking good Richard

Great Article on this not uncommon problem. I think after reading the article: authors.elsevier.com/a/1mWXy77WluYQV pathologists may have different ideas about whether it is benign or malignant.

Angela Chou @angiechou

4 months ago

Would you diagnose this lesion as parathyroid carcinoma in a patient with chronic renal failure? Find out here - authors.elsevier.com/a/1mWXy77WluYQV

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Would you diagnose this lesion as parathyroid carcinoma in a patient with chronic renal failure? Find out here - authors.elsevier.com/a/1mWXy77WluYQV

30s M with a renal mass. Diagnosis? #PathTwitter @MGBpathology @MGHPathology

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1/ Excited to share the latest paper from our group on lung carcinoids. onlinelibrary.wiley.com/doi/10.1111/hi… pubmed.ncbi.nlm.nih.gov/41489019/ A few comments below: