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Pediatrics hyperuricemia in clinical practice: A retrospective analysis in 1753 children and adolescents with hyperuricemia - 23/01/25

Doi : 10.1016/j.jbspin.2024.105796 
Blanka Stiburkova a, b, , Marketa Lukesova c, Jiri Zeman b
a Institute of Rheumatology, First Faculty of Medicine, Charles University, Prague, Czech Republic 
b Department of Pediatrics and Inherited Metabolic Disorders, General University Hospital and First Faculty of Medicine, Charles University, Prague, Czech Republic 
c Institute of Medical Biochemistry and Laboratory Diagnostics, First Faculty of Medicine, Charles University and General University Hospital in Prague, Prague, Czech Republic 

Corresponding author. Charles University and General University Hospital in Prague, Institute of Medical Biochemistry and Laboratory Diagnostics, First Faculty of Medicine, Na Slupi 4, 128 00 Prague, Czech Republic.Charles University and General University Hospital in Prague, Institute of Medical Biochemistry and Laboratory Diagnostics, First Faculty of MedicineNa Slupi 4Prague128 00Czech Republic

Highlights

Hyperuricemia is a relatively common condition in children.
In hyperuricemia pediatric patients, genetic factors affecting uric acid production and/or excretion should be routinely considered.
Discussion regarding the value of a personalized approach to managing hyperuricemia in pediatric clinical practice is necessary.

Il testo completo di questo articolo è disponibile in PDF.

Abstract

Objectives

Serum levels of uric acid (S-UA) are influenced by the interaction of genetic and environmental factors; detailed studies of hyperuricemia in children are rare. This retrospective study aimed to analyze the causes, risk factors, and therapeutic approaches associated with the development of hyperuricemia in childhood.

Methods

In a single-center study, serum uric acid levels were analyzed in 33,900 samples from 13,890 children and adolescents<19 years (6760 girls and 7130 boys) obtained between 2013 and 2023. Hyperuricemia was defined as S-UA>370μmol/L (6.22mg/dL) in girls and>420μmol/L (7.06mg/dL) in boys; mild hyperuricemia was defined as 370–420μmol/L in boys<13 years.

Results

In the analyzed group, hyperuricemia was found in 1753 patients (12.6%), including 586 girls and 864 boys; mild hyperuricemia was found in 303 boys<13 years. The most common associated conditions were obesity with body mass index>95th percentile (27.8% of girls, 26.3% of boys) and chronic kidney disease (18.6% of boys, 11.4% of girls). Hyperuricemia was also relatively common in children with connective tissue disorders (10.6%) or different inherited metabolic disorders (10.7%). Transitory hyperuricemia was found in 19.1% of girls and 10.1% of boys with acute gastroenteritis. Urate-lowering therapy was used in 73 children and adolescents with severe hyperuricemia (S-UA 556±107μmol/L, fraction excretion of UA 3.27±1.98%). Eight treated children had chronic kidney disease, nine were extremely obese, one had combined antiepileptic therapy, and 55 had inherited metabolic diseases, including 26 children with disorders of purine metabolism. The initial daily dose of allopurinol (50–100mg) normalized the S-UA (350±80μmol/L) in a majority of children, except for extremely obese adolescents (weight 98–149kg) where the dose had to be increased to 200–300mg.

Conclusions

Asymptomatic hyperuricemia is a relatively common biochemical finding in pediatric clinical practice. The etiology of hyperuricemia should be carefully analyzed, and the value of individualized hyperuricemia management and the eventual benefits of urate-lowering therapy in children must be carefully considered.

Il testo completo di questo articolo è disponibile in PDF.

Keywords : Hyperuricemia, Pediatric-onset, Urate-lowering therapy


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© 2024  Sociýtý Franýaise de Rhumatologie. Pubblicato da Elsevier Masson SAS. Tutti i diritti riservati.
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