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Stable long-term renal function after pediatric liver transplantation

Gustaf Herlenius1, Sverker Hansson, Marie Krantz

  • 1Transplant Institute, Sahlgrenska University Hospital, Göteborg, Sweden. gustaf.herlenius@gmail.com

Insights

Pediatric liver transplant recipients experienced a significant initial drop in kidney function, but renal function stabilized long-term. Most children did not develop chronic kidney disease (CKD) stage III by year five, suggesting potential renal recovery post-transplant.

Area of Science:

  • Pediatric Nephrology
  • Hepatology
  • Transplantation Medicine

Background:

  • Calcineurin inhibitors used post-liver transplant (LT) are associated with increased risk of chronic kidney disease (CKD) in children.
  • Understanding long-term renal function after pediatric LT is crucial for patient management and prognosis.

Purpose of the Study:

  • To assess renal function (glomerular filtration rate - GFRm) before and annually after pediatric LT.
  • To determine the prevalence of CKD stage III (GFR 30-60 mL/min/1.73 m²) post-LT.
  • To investigate the impact of patient age at LT and underlying liver disease on long-term renal function.

Main Methods:

  • Prospective study of 36 children undergoing LT, with median follow-up of 6.5 years.
  • GFRm was measured before LT and annually thereafter.
  • Analysis included patient age at LT, underlying liver disease etiology, and CKD prevalence.

Main Results:

  • A significant 23% decrease in GFRm occurred within the first six months post-LT, followed by stabilization.
  • CKD stage III prevalence was 17% at six months and 18% at five years, but 0% at ten years.
  • Children transplanted younger than two years showed a smaller initial GFRm decrease (13%) compared to older children (31%); however, renal function stabilized in both groups.

Conclusions:

  • Pediatric liver transplant recipients experience an initial decline in renal function, but it tends to stabilize over time.
  • The prevalence of CKD stage III is notable in the early post-transplant period but may resolve with longer follow-up.
  • Age at transplantation and underlying liver disease (especially malignancy) can influence the initial renal function decline, but long-term recovery is possible.

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