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.

Worldโ€™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.

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Read through the last February Editor's Choice article "Evaluation for genetic disease in kidney transplant candidates: A practice resource" by Ames et al. https://buff.ly/4jLjjdA #riskalleles #genetictesting

#MassGeneral physicians Tatsuo Kawai, MD, and Leo Riella, MD, were featured in @CBSNews's report on MGH's second pig kidney transplant, which they conducted.https://www.cbsnews.com/boston/news/pig-kidney-transplant-massachusetts-general-hospital/

223 lives changed. 75 living kidney donors. 6 satellite locations. 1 mission: pioneering kidney transplant care for all through access and innovation like xenotransplantation and tolerance. #KidneyTransplant Learn more: http://massgeneral.org/kidneytransplant

Mass General set another milestone. Jan 25th marked our 2nd successful xenotransplant of a genetically-edited pig kidney into a living recipient. Tim Andrews is now the 4th person in the world to receive a genetically-edited pig kidney. http://spklr.io/6016F2g0

๐Ÿšจ Breaking Records Again! ๐Ÿšจ
For 13 years in a row, our transplant teams have saved more lives through #OrganTransplantation than any hospital in New England.
๐Ÿ‘ Shoutout to our patients, care teams and researchers for an amazing year in 2024! #TransplantInnovation #DonateLife

1/7 @MGHKidneys @mgh_transplant
๐Ÿฉบ Path case: 50yo male, kidney transplant recipient (6 years post-tx), with a hx of membranous nephropathy now presenting with worsening proteinuria (3.9 g/day) and stable creatinine (0.9 mg/dL).
๐Ÿ”ฌ DSA: Neg
๐Ÿงช Serum PLA2R: Neg
Key learnings!๐Ÿ‘‡

6/7
๐Ÿ”ฌ Takeaway for Clinical Practice
โ€ข Be vigilant for MN recurrence in kidney transplant recipients with prior history.
โ€ข Regularly monitor proteinuria and PLA2R antibodies post-transplant.
โ€ข Rituximab is an effective Rx option based on recurrence risk & antibody levels.

7/7
๐Ÿ’ก Final Thought:
This case highlights the importance of recognizing MN recurrence in transplant patients and the role of targeted therapies like rituximab in improving outcomes. @fervenzafernan1 How often do you see PLA2R MN recurrence with negative serum antiPLA2R Ab?

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