Our lab studies innovative ways to regulate the immune system to better manage and treat transplanted patients.

Our research portfolio is diverse, but our goal is singular: to redefine the boundaries of transplant medicine.

World’s First Genetically-Edited Pig Kidney Transplant into Living Recipient Performed at Massachusetts General Hospital.

Under the leadership of Leonardo V. Riella, MD, PhD, Medical Director for Kidney Transplantation, a genetically-edited pig kidney with 69 genomic edits was successfully transplanted into a living patient in March 2024. Building on this milestone, a second transplant was performed in January 2025, marking another critical step forward in advancing xenotransplantation as a solution to the organ shortage crisis. Two more transplants are planned for 2025.

Recent Publications

News

Videos

📢 New RCT in kidney transplant patients with chronic active AMR: IVIG (1g/kg x6 months) vs no IVIG (both w/ pulse steroids).
🧬 IVIG stabilized eGFR & improved molecular signatures—despite no DSA change.
đź’ˇ Option in pts where escalating immunosuppression is risky. @Kidney_Int

"Xenotransplantation — Long Awaited, Much Learned, Much More to Be Learned"

@NEJM Editorial by Editor-in-Chief, Sandy Feng @UCSFTransplant on the paper detailing the 1st xenokidney transplant with @amjtransplant AE @LVRiella @MGH_transplant as senior author. 10.1056/NEJMe2504399

🚨 Our new study in @SciTranslMed identified the inhibitory receptor Siglec-E as a critical brake on dendritic cell activation and T cell–mediated transplant rejection. 1/5

🚨 Current therapies focus on T cells—but what if we’ve been overlooking a key player?
Our new study out today in @ScienceTM uncovers a natural "brake" in the innate immune system (Siglec) that is crucial to inhibit rejection. @mgh_transplant @MGHKidneys @ThiagoJBorges

News Release @MGBResearchNews @MGHSurgery here: https://www.massgeneralbrigham.org/en/about/newsroom/press-releases/discovery-yields-insights-on-preventing-organ-transplant-rejection
Link to article here: https://www.science.org/doi/10.1126/scitranslmed.ads2694

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