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Mark Yarchoan

@markyarchoan.bsky.social
40 followers 18 following 20 posts

Translational researcher, hepatobiliary oncologist, @JohnsHopkins

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Reposted by Mark Yarchoan
American Association for Cancer Research (AACR) @theaacr.bsky.social · 05/05/2026
Harnessing Immunotherapy for Rare Cancers: Sandra P. D’Angelo, Alexander N. Shoustari, and Mark Yarchoan will address this topic in a plenary session at the AACR Special Conference on Rare Cancers (July 18-20, Vancouver). Learn more: buff.ly/uT6gl0k #AACRrarecancers26 @markyarchoan.bsky.social
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Mark Yarchoan @markyarchoan.bsky.social · 13/12/2025
Ethan Neumann, a 27-year-old PhD candidate in my lab, devoted himself to studying #fibrolamellar carcinoma, the cancer that claimed his life last week. Please support his father’s effort to establish an endowed research fellowship in Ethan’s name ⬇️ gofund.me/f03f47244
gofundme.com
Donate to Ethan Neumann Fellowship, organized by Craig Neumann
Ethan Neumann Fellowship Help establish the Dr. Ethan Neumann Memorial Research Fellowshi… Craig Neumann needs your support for Ethan Neumann Fellowship
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Mark Yarchoan @markyarchoan.bsky.social · 11/12/2025
New #NEJM report led by Yuxuan Wang In collaboration with Bert Vogelstein and my lab: nejm.org/doi/full/10.... ➡️ctDNA methylation profiling of blood can identify patients with irAEs ➡️irAEs often involve multiorgan tissue injury
nejm.org
Molecular Evidence of Multiorgan Damage in Patients with Immune-Related Adverse Events | NEJM
In 6 of 14 patients receiving immune checkpoint inhibitors, cell-free DNA methylation profiling revealed multiorgan damage with immune-related adverse events, often before symptoms appeared.
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Mark Yarchoan @markyarchoan.bsky.social · 08/12/2025
We lost someone extraordinary: Ethan Neumann, a PhD candidate in my lab, worked tirelessly to study fibrolamellar carcinoma - the cancer that would ultimately claim his life Just before his died, he officially earned his doctorate and became Dr. Neumann → myarchoan.wixsite.com/yarchoanlabs...
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Reposted by Mark Yarchoan
Paul Thomas @pgtimmune.bsky.social · 24/11/2025
Two complementary studies from our group out today: a therapeutic peptide vaccine trial for fibrolamellar carcinoma (FLC) & TIRTL-Seq, our robust method for deep quantitative paired TCR sequencing a🧵w/ @markyarchoan.bsky.social & @pogorely.bsky.social www.nature.com/articles/s41...
nature.com
TIRTL-seq: deep, quantitative and affordable paired TCR repertoire sequencing - Nature Methods
TIRTL-seq is a high-throughput method for paired T cell receptor sequencing at the cohort scale.
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Reposted by Mark Yarchoan
naultjc.bsky.social @naultjc.bsky.social · 23/11/2025
1) We recently identified as serum tumor biomarker of fibrolamellar carcinoma, procalcitonin, with @zucmanrossi.bsky.social and @markyarchoan.bsky.social that you can find in www.medrxiv.org/content/10.1...
medrxiv.org
Serum Procalcitonin: A Novel Tumor Biomarker for Diagnosis and Follow-Up in Fibrolamellar Hepatocellular Carcinoma
Introduction: Fibrolamellar carcinoma (FLC) is a rare primary liver cancer that predominantly affects young patients with normal known serum tumor biomarkers (alpha-fetoprotein (AFP) and CA19-9). An o...
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Mark Yarchoan @markyarchoan.bsky.social · 16/05/2025
1/ Our new review is out today in Nature Reviews Cancer—on why therapeutic cancer vaccines are finally gaining traction after decades of setbacks. 🔗 rdcu.be/emkkd w/ @NeehaZaidi @DrLizJaffee Key takeaways below
rdcu.be
Recent advances in therapeutic cancer vaccines
Nature Reviews Cancer - Cancer prevention vaccines have reduced cancer-related mortalities, yet therapeutic cancer vaccine development and clinical translation continues to face challenges. Here,...
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Mark Yarchoan @markyarchoan.bsky.social · 21/04/2025
New study led by @danielzabransky.bsky.social lab Older adults respond well to anti-PD1 therapy, despite age-related immune changes 🔗 nature.com/articles/s41... Findings unlikely to extend to other forms of immunotherapy (eg cancer vaccines, etc.) which rely on naive T cells
nature.com
Age-related divergence of circulating immune responses in patients with solid tumors treated with immune checkpoint inhibitors - Nature Communications
The aging immune system is characterized by changes in immune cell frequencies and functionality. Here the authors report dynamics of age-related divergence of circulating immune responses in patients...
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Reposted by Mark Yarchoan
ACIR @acir-org.bsky.social · 18/04/2025
Nakazawa et al. studied the peripheral immune profile of a cohort of patients with advanced solid tumors; 54 patients received anti-PD-(L)1 alone and 50 received anti-PD-(L)1 + anti-CTLA-4. bit.ly/42qWx4d   @markyarchoan.bsky.social
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Reposted by Mark Yarchoan
Waggoner Lab @labwaggoner.bsky.social · 10/04/2025
Anti-vascular endothelial growth factor enhances immune checkpoint inhibition by reprogramming regulatory T cells into a fragile state @cp-immunity.bsky.social @markyarchoan.bsky.social www.cell.com/immunity/ful... on www.cell.com/immunity/ful...
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Mark Yarchoan @markyarchoan.bsky.social · 10/04/2025
1/ Exciting work published in Immunity from @TimGreten et al. showing that anti-VEGF enhances the antitumor activity of PD-L1 + CTLA-4 blockade by inducing a fragile Treg phenotype via BAFF and IL-12 📄 www.cell.com/immunity/ful...
cell.com
Anti-vascular endothelial growth factor treatment potentiates immune checkpoint blockade through a BAFF- and IL-12-dependent reprogramming of the TME
VEGF blockade is known to enhance immune checkpoint blockade (ICB) efficacy, but its precise immunological mechanism remains undefined. Benmebarek et al. reveal that VEGF inhibition drives BAFF- and I...
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Mark Yarchoan @markyarchoan.bsky.social · 24/02/2025
🚨 New manuscript led by Marina Baretti Using #CODEX multiplexed imaging: 🧬 #CCA is rich in CAFs,TAMs,MDSCs, scarce CD8 T cells (~1.8% of all cells) 🧬 FGFR2 fusions → ⬆️ CD11b+/CD15+ granulocytes 🧬 IDH1 mutations → trend ⬆️M2-like mac ▶️ pubmed.ncbi.nlm.nih.gov/39969434/
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Mark Yarchoan @markyarchoan.bsky.social · 22/01/2025
Our first 2025 paper was published today in JITC Explores the "obesity paradox" in cancer immunotherapy: 1️⃣ Obese patients have better IO outcomes (despite ⬆️cancer risk) 2️⃣ Obesity → ⬆️T-cell exhaustion →⬆️ ICI benefit doi.org/10.1136/jitc...
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Mark Yarchoan @markyarchoan.bsky.social · 15/11/2024
Excited to share our latest study in Nature Immunology on TLS in #HCC patients treated w/ neoadj ICB: ⏩ TLS linked to improved outcomes ⏩ Novel "involuted" TLS found in tumor regression zones 🔗 nature.com/articles/s41...
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