Pashtoon Kasi MD, MS (@pashtoonkasi) 's Twitter Profile
Pashtoon Kasi MD, MS

@pashtoonkasi

Oncologist |Researcher| ColorectalCancer #CRCSM👨🏼‍🎓@MayoClinic @PittTweet Alum 🧬#ctDNA #LiquidBiopsies #PrecisionOncology @CityOfHope Views my own-COI @ASCO

ID: 589105446

linkhttps://coi.asco.org/share/PT3-AL5H/Pashtoon%20Kasi calendar_today24-05-2012 10:45:12

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Pashtoon Kasi MD, MS (@pashtoonkasi) 's Twitter Profile Photo

#PrecisionMedicine 👀👆🏾🧵 on a gene that I just learnt about 2m ago on #ctDNA &🏃. 🧬ERRFI1 🟢ERBB Receptor Feedback Inhibitor 1 ❓pronounced as ERR-FY-1️⃣ 2m of ERLOTINIB💊 Within weeks bilirubin📉 albumin📈 PS⬆️🙌🏾 #cholangiocarcinoma CtDNA VAF% 21%➡️3%👏🏾 Before➡️After💊2m

#PrecisionMedicine 👀👆🏾🧵 on a gene that I just learnt about 2m ago on #ctDNA &🏃.

🧬ERRFI1
🟢ERBB Receptor Feedback Inhibitor 1
❓pronounced as ERR-FY-1️⃣ 

2m of ERLOTINIB💊
Within weeks bilirubin📉
albumin📈
PS⬆️🙌🏾
#cholangiocarcinoma
CtDNA VAF% 21%➡️3%👏🏾 
Before➡️After💊2m
Pashtoon Kasi MD, MS (@pashtoonkasi) 's Twitter Profile Photo

#LiquidBiopsies👇🏽this is 🆒! 💡Less about the assay but more about the approach/science. For patients getting liquid biopsies (#ctDNA), good idea by companies reporting other relevant biomarkers. ✔️Secondary germline🧬 ✔️Pharmacogenomics💊 ✔️HLA🩸 ✔️Viral e.g. HPV🦠 OncoAlert

#LiquidBiopsies👇🏽this is 🆒!

💡Less about the assay but more about the approach/science. For patients getting liquid biopsies (#ctDNA), good idea by companies reporting other relevant biomarkers.

✔️Secondary germline🧬
✔️Pharmacogenomics💊
✔️HLA🩸
✔️Viral e.g. HPV🦠

<a href="/OncoAlert/">OncoAlert</a>
Anwaar Saeed (@anwaarsaeed3) 's Twitter Profile Photo

🚨 STELLAR-303 makes history! First-ever Ph3 trial to show OS benefit of IO in MSS CRC 🎯 Years of grit & belief led us here 🥹 Endless thanks to Exelixis⁩ for the trust & Dr. Hecht for leading this global win with me! 🎉 ⁦UPMC Hillman Cancer Center⁩ ir.exelixis.com/news-releases/…

Pashtoon Kasi MD, MS (@pashtoonkasi) 's Twitter Profile Photo

📺 Axiom Healthcare Strategies townhall. Now available at YouTube. 🙌🏽Love the cross disciplinary takes and discussions post ASCO. From immunotherapy/neoadjuvant paradigm shifts, to novel targets/molecules. In particular antibody-drug conjugates 🎯>〰️🔸. OncoAlert youtu.be/aTxqfIAePRQ?si…

📺 <a href="/axiomhcs/">Axiom Healthcare Strategies</a> townhall. Now available at YouTube.

🙌🏽Love the cross disciplinary takes and discussions post ASCO.

From immunotherapy/neoadjuvant paradigm shifts, to novel targets/molecules. In particular antibody-drug conjugates   
🎯&gt;〰️🔸.

<a href="/OncoAlert/">OncoAlert</a> 

youtu.be/aTxqfIAePRQ?si…
Aadel Chaudhuri, MD PhD (@aadel_chaudhuri) 's Twitter Profile Photo

Grateful to begin serving as Senior Editor for Clinical Cancer Research (Clinical Cancer Research), a journal I respect and love so much. Cool opportunity and very excited to work with Dr. Timothy Yap, Marlowe S Tessmer and the whole editorial crew! aacrjournals.org/clincancerres/…

Myriam Chalabi (@myriamchalabi) 's Twitter Profile Photo

Congrats to all! Also on the list: PhD candidate in my group Lauren van den Dungen presenting the PUMA study: pembrozumab and organ preservation in unresectable, non-metastatic dMMR CrC. #107P Friday poster session. #proudPI ESMO - Eur. Oncology #ESMOambassadors The Netherlands Cancer Institute

Angela Lamarca (@drangelalamarca) 's Twitter Profile Photo

Medical Oncology team representation from Fundación Jiménez Díaz at ESMO - Eur. Oncology #ESMOGI25 Ready for four days of education, scientific exchange and networking 🤩🥳😊🫶 PD: thanks to everyone back at home taking care of our patients and allowing us to be here ❤️ (I don’t say this enough)

Medical Oncology team representation from <a href="/Hospital_FJD/">Fundación Jiménez Díaz</a> at <a href="/myESMO/">ESMO - Eur. Oncology</a> #ESMOGI25

Ready for four days of education, scientific exchange and networking
🤩🥳😊🫶

PD: thanks to everyone back at home taking care of our patients and allowing us to be here ❤️ (I don’t say this enough)
Dr. Cathy Eng (@cathyengmd) 's Twitter Profile Photo

Small @myesmo #ESMOGI25 reunion in the faculty room! Great way to start the AM. Some of my fave people: Dr. Eileen O’Reilly, Angela Lamarca and Karyn Goodman, MD, MS ☹️Missed our photo 📸opportunity with Rachel Riechelmann! #ESMOAmbassadors #cancer #CancerResearch

Small @myesmo #ESMOGI25 reunion in the faculty room! Great way to start the AM.  Some of my fave people:   Dr. Eileen O’Reilly, <a href="/DrAngelaLamarca/">Angela Lamarca</a> and <a href="/KarynAGoodman/">Karyn Goodman, MD, MS</a> 

☹️Missed our photo 📸opportunity with <a href="/RachelRiechelm2/">Rachel Riechelmann</a>! 

#ESMOAmbassadors #cancer #CancerResearch
Myriam Chalabi (@myriamchalabi) 's Twitter Profile Photo

Looking forward to the controversy session on organ preservation in dMMR/MSI colon cancers! 🥊 join us in Barcelona room! ESMO - Eur. Oncology #ESMOAmbassadors #ESMOGI25

Looking forward to the controversy session on organ preservation in dMMR/MSI colon cancers! 🥊 join us in Barcelona room! <a href="/myESMO/">ESMO - Eur. Oncology</a> #ESMOAmbassadors #ESMOGI25
Erman Akkus (@erman_akkus) 's Twitter Profile Photo

🟢IO for MSS CRC ESMO - Eur. Oncology #ESMOGI25 💉Trials of IO for unselected CRC 💉IO in patients with or without liver met 💉Neoadj BOT/BAL for pMMR CRC 💉Inducing mutability in pMMR CRC #cancer #oncology #colon #colorectal #MedX

🟢IO for MSS CRC
<a href="/myESMO/">ESMO - Eur. Oncology</a> #ESMOGI25 

💉Trials of IO for unselected CRC 
💉IO in patients with or without liver met
💉Neoadj BOT/BAL for pMMR CRC
💉Inducing mutability in pMMR CRC

#cancer #oncology #colon #colorectal #MedX
Myriam Chalabi (@myriamchalabi) 's Twitter Profile Photo

Great overview by Michael overman of pMMR #CRC and efforts to modulate for immunotherapy response. Important to learn from negative studies, but also consider that responses might be different in earlier disease stages. #ESMOAmbassadors #ESMOGI25

Great overview by <a href="/michael_overman/">Michael overman</a> of pMMR #CRC and efforts to modulate for immunotherapy response. Important to learn from negative studies, but also consider that responses might be different in earlier disease stages. 
#ESMOAmbassadors #ESMOGI25
Nieves Martinez Lago MD PhD (@dramartinezlago) 's Twitter Profile Photo

23P – #ESMOGI25 GITuD real-world study, 44% of dMMR/MSI-H CRCs (MLH1–/MAPK WT) had actionable alterations (NTRK, RET) vs 0% in non-CRC. NTRK fusions were associated with worse 5-year OS (33% vs 100%, p=0.034), suggesting a role in primary resistance to ICI.

23P – #ESMOGI25 GITuD real-world study, 44% of dMMR/MSI-H CRCs (MLH1–/MAPK WT) had actionable alterations (NTRK, RET) vs 0% in non-CRC. NTRK fusions were associated with worse 5-year OS (33% vs 100%, p=0.034), suggesting a role in primary resistance to ICI.
Angela Lamarca (@drangelalamarca) 's Twitter Profile Photo

Bye bye Barcelona, very busy but very fruitful ESMO - Eur. Oncology #ESMOGI25 Full of science, networking and colleagues that are becoming a second family #ESMOGI26 📍Munich 🗓️1-4 July 2026 #ESMOAmbassadors

Bye bye Barcelona, very busy but very fruitful <a href="/myESMO/">ESMO - Eur. Oncology</a> #ESMOGI25

Full of science, networking and colleagues that are becoming a second family

#ESMOGI26
📍Munich
🗓️1-4 July 2026

#ESMOAmbassadors
Pashtoon Kasi MD, MS (@pashtoonkasi) 's Twitter Profile Photo

“You are what you eat,” as they say. 🎙️Here’s the link to the interview and insights with Business Insider 🗞️ 📰. Hilary Brueck ✍️ What we put on our plate matters more than ever. 💡Complex interplay of diet and microbiome. 🔗 businessinsider.com/colon-cancer-d…

“You are what you eat,” as they say. 

🎙️Here’s the link to the interview and insights with <a href="/BusinessInsider/">Business Insider</a> 🗞️ 📰. 

<a href="/Hilarx/">Hilary Brueck</a> ✍️ 

What we put on our plate matters more than ever. 💡Complex interplay of diet and microbiome. 

🔗 businessinsider.com/colon-cancer-d…