Raphael Meier MD-PhD

Thank you, @ttsorg, for choosing our article for the February 2021 issue cover of @TransplantJrnl! #Patient of #courage | #collaborative #teamwork #TransplantTwitter journals.lww.com/transplantjour…

Congrats @HurstDanielj for this excellent work!!

Xenobulletin | March 2026 | AJT @meier_raphael @JoeMLadowski amjtransplant.org/news-do/xenobu…

Great weekend at the @_ILTS_ Consensus Conference 2026 in Washington, D.C. Glad to contribute with Group 2 on HCC biomarkers in liver transplantation and to reconnect with outstanding colleagues. Congratulations to @ValeriaMas11 and the organizing team #LiverTransplantation #HCC

XenoBulletin｜February 2026 | AJT amjtransplant.org/news-do/xenobu… @meier_raphael @JoeMLadowski

How much donor–recipient age mismatch is acceptable in #liver #transplantation? In >111,000 OPTN/UNOS transplants: • ≥20y older donors → inferior graft survival • ≥50y difference → >20% early adverse events • Younger grafts perform best Supports age-matching strategies

Fascinating study from @Penn team on xenoliver support. Pig-to-human decedent extracorporeal liver cross-circulation for up to 3.5 days, w/ one case of total hepatectomy showing preserved metabolic support. Important step for ALF, major unmet clinical need nature.com/articles/s4159…

Surgery is a "wicked" environment: feedback is delayed, noisy, and often biased. My essay on why experience doesn't always equal mastery, and how to learn when the feedback loops are broken. leezhaomd.org/post/the-wicke… #MedTwitter #Surgery #MedEd

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Honored to share our newly published article “The First Pig-to-human Liver Xenotransplantation From Genetically … . Transplantation journals.lww.com/transplantjour…” Sincere thanks to Prof. Ezzelarab, @AlexandreLoupy, @meier_raphael and @BurcinEkser for their insight and mentorship.

Pleased to co-author this position paper alongside leaders in the field @BurcinEkser @leobuhler @M_M_Mohiuddin

First in the world SP Robotic Kidney Pancreas tx: - Both grafts placed on the left side - K anast time: 33 min - P anast time: 45 min - Op time: 5h33m - LOS: 4 days @CleClinicUro @amjtransplant @ASTSChimera @AmerUrological @AmCollSurgeons @IHPBA @EAHPBA @AHPBA #Robotics

Key challenges discussion after first pig-to-human auxiliary #liver #xenotransplant: thrombotic microangiopathy, coagulation dysregulation, portal flow, native liver regeneration, immune pathways, biocompatibility. Landmark progress with clear next steps onlinelibrary.wiley.com/doi/10.1111/xe…

XenoBulletin｜January 2026 amjtransplant.org/news-do/xenobu… @meier_raphael @JoeMLadowski

It was a pleasure to participate in Synergy: Hope in Motion. Many thanks to @InfiniteLgcyOPO for organizing such a meaningful event and for bringing together so many dedicated professionals committed to organ and tissue donation. Looking forward to continuing this important work

Our experience using liver grafts with ≥50 percent macrosteatosis—available here: sciencedirect.com/science/articl…

XenoBulletin｜December 2025 amjtransplant.org/news-do/xenobu… @meier_raphael @JoeMLadowski

1- After a month of an amazing international xenotransplantation association (IXA) meeting in Geneva 🇨🇭, I am thrilled to share that I am elected as the President-Elect of IXA! #IXA2025 Congress was a triumph—21 countries, record attendance & groundbreaking xeno insights.🧵

XenoBulletin｜November 2025 amjtransplant.org/news-do/xenobu… @meier_raphael @JoeMLadowski