Characteristics and outcomes of children with primary oxalosis requiring renal replacement therapy.
SourceClinical Journal of the American Society of Nephrology, 7, 3, (2012), pp. 458-65
01 maart 2012
Article / Letter to editor
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Clinical Journal of the American Society of Nephrology
SubjectN4i 4: Auto-immunity, transplantation and immunotherapy
BACKGROUND AND OBJECTIVES: Primary hyperoxaluria (PH) as a cause of ESRD in children is believed to have poor outcomes. Data on management and outcomes of these children remain scarce. DESIGN, SETTING, PARTICIPANTS, & MEASUREMENTS: This study included patients aged <19 years who started renal replacement therapy (RRT) between 1979 and 2009 from 31 countries providing data to a large European registry. RESULTS: Of 9247 incident patients receiving RRT, 100 patients had PH. PH children were significantly younger than non-PH children at the start of RRT. The median age at RRT of PH children decreased from 9.8 years in 1979-1989 to 1.5 years in 2000-2009. Survival was 86%, 79%, and 76% among PH patients at 1, 3, and 5 years after the start of RRT, compared with 97%, 94%, and 92% in non-PH patients, resulting in a three-fold increased risk of death over non-PH patients. PH and non-PH patient survival improved over time. Sixty-eight PH children received a first kidney (n=13) or liver-kidney transplantation (n=55). Although the comparison was hampered by the lower number of kidney transplantations primarily derived from the earlier era of RRT, kidney graft survival in PH patients was 82%, 79%, and 76% at 1, 3, and 5 years for liver-kidney transplantation and 46%, 28%, and 14% at 1, 3, and 5 years for kidney transplantation alone, compared with 95%, 90%, and 85% in non-PH patients. CONCLUSIONS: The outcomes of PH children with ESRD are still poorer than in non-PH children but have substantially improved over time.
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