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Partial Heart Transplant for Congenital Heart Disease
Douglas M Overbey1,2,3, Berk Aykut1,3, John A Kucera1
1Congenital Heart Surgery Research and Training Laboratory, Duke University, Durham, North Carolina.
JAMA
|August 27, 2025
Summary
Partial heart transplantation, a novel living valve replacement, shows promise for treating irreparable heart valve disease. This early study indicates the procedure is feasible, safe, and effective, with transplanted valves demonstrating significant growth.
Area of Science:
- Cardiovascular Surgery
- Pediatric Cardiology
- Transplantation Immunology
Background:
- Congenital heart valve disease often requires complex surgical interventions.
- Current treatments may not accommodate the growth needs of pediatric patients.
- Partial heart transplant offers a potential solution for irreparable valvular disease with capacity for growth.
Purpose of the Study:
- To assess the feasibility, safety, and efficacy of partial heart transplant in pediatric patients.
- To describe the early surgical experience with this novel valve replacement technique.
- To evaluate the growth potential of transplanted semilunar valves.
Main Methods:
- A case series of 19 pediatric patients undergoing partial heart transplant.
- Utilized semilunar valves from donor hearts for replacement.
- Maintenance immunosuppression with tacrolimus monotherapy.
Main Results:
- All transplanted valves showed functional success and demonstrated growth in annular diameter and leaflet length.
- Annular diameter increased significantly post-transplant in both aortic and pulmonary positions.
- No major complications related to immunosuppression were observed; one patient required reoperation for an unrelated issue.
Conclusions:
- Partial heart transplant is a feasible, safe, and efficacious option for pediatric patients with irreparable heart valve disease.
- Transplanted valves exhibit growth, addressing a key limitation of current treatments.
- Continued monitoring and research are essential for the advancement of this technique.
