Post-transplant lymphoproliferative disease is associated with early sternotomy and left ventricular hypoplasia

Britt-Marie Ekman-Joelsson1, Håkan Wåhlander1, Mats Synnergren1

  • 11Department of Pediatrics,Institution for Clinical Sciences,Sahlgrenska Academy,University of Gothenburg,Gothenburg,Sweden.

Insights

Pediatric heart transplant recipients with congenital heart disease, especially those with infant sternotomy or multiple surgeries, face higher risks of post-transplant lymphoproliferative disorder. Epstein-Barr virus mismatch and tacrolimus also increase this risk.

Area of Science:

  • Pediatric Cardiology
  • Immunology
  • Transplantation Medicine

Background:

  • Heart transplantation in children has been available in Sweden since 1989.
  • An increased incidence of post-transplant lymphoproliferative disorder (PTLD) was observed, necessitating risk factor identification.

Purpose of the Study:

  • To identify risk factors for PTLD in pediatric heart transplant recipients.
  • To analyze the correlation between specific clinical and immunological factors and PTLD development.

Main Methods:

  • Retrospective analysis of pediatric heart transplant cases (0-18 years) from 1989 to 2014.
  • Evaluation of patient demographics, surgical history, viral status, and immunosuppressive regimens.

Main Results:

  • PTLD occurred in 14% of pediatric heart transplant recipients.
  • Significant risk factors for PTLD included surgically palliated congenital heart disease (CHD), infant sternotomy, hypoplastic left ventricle, multiple surgical events, Epstein-Barr virus (EBV) donor-positive/recipient-negative mismatch, and tacrolimus-based immunosuppression.
  • PTLD was exclusively observed in patients with pre-existing CHD.

Conclusions:

  • Congenital heart disease, particularly complex forms requiring early surgical intervention, is a primary risk factor for PTLD post-pediatric heart transplantation.
  • Infant sternotomy and a higher number of surgical procedures are strongly associated with PTLD development.
  • EBV seromismatch and specific immunosuppressive agents like tacrolimus warrant careful consideration in managing PTLD risk.
Abstract