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

🚨 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

Case presented @BWHKidney @MGHKidneys Grand Rounds. Nephrotic Syndrome in a 40-Year-Old Male.
A new-onset nephrotic syndrome with AKI, 15 g/day proteinuria, and no systemic symptoms
👨🏿‍🦱 African American male
📈 BMI 41
🧂 Hypertension
🎯 Let’s explore the differential approach

5/6🧪 Workup:
✅ Kidney Biopsy – critical to define the exact cause
✅ Labs:
• HIV, Hep B/C, Parvovirus
• PLA2R Abs
• Anti-Nephrin Abs (new research test for systemic or circulating FSGS)
• APOL1 genotyping if FSGS
✅ Cancer screening if membranous/MCD suspected

6/6 Biopsy showed diffuse podocytopathy and FSGS on light microscopy. The patient was homozygous for APOL1 high-risk variants and had positive anti-Nephrin Antibodies. Double hit... How would you treat this patient?

Honored to join the @TheAtlantic Health Summit in Boston on April 8 to speak about the first genetically-edited pig kidney transplant into a living recipient — a major milestone in transplantation.
Join us. https://live.theatlantic.com/en/AtlanticLIVE/HealthSummit2025/purchase.php?utm_source=speakers&utm_medium=crossplatform&utm_campaign=health25&utm_id=massgen

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