• Zrinko Šalek, Matej Šapina, Karolina Kramarić, Danko Milošević, and Ernest Bilić.
• Division of Paediatric Haematology and Oncology, Department of Paediatrics, University Hospital Centre Zagreb, Zagreb, Croatia.
• Acta Clin Croat. 2022 Nov 1; 61 (3): 395402395-402.

AbstractEstimated glomerular filtration rate (eGFR) is one of the best-performing methods in evaluating kidney function. There are limited data regarding the estimated glomerular filtration rate in children and young adults with hemophilia. The aim of this study was to determine the difference between three commonly used estimated glomerular filtration rate equations in the pediatric population in a cohort of patients with hemophilia. Our prospective study included 36 pediatric patients with moderate or severe hemophilia. eGFR was calculated for each patient using the original creatinine-based "bedside Schwartz" equation, the cystatin C-based equation and the creatinine-cystatin C-based equation. The difference between the equations, calculated using the one-way repeated ANOVA test, was statistically significant (p <0.001), and post hoc analysis found differences between each method. Correlation analysis showed the strongest positive correlation between the bedside Schwartz equation and creatinine-cystatin C-based equation (r=0.866) among the three methods examined. A correlation between the three eGFR methods was present, but with significant differences between them. Due to the observed differences between eGFR in pediatric patients with hemophilia, further research is needed to find the optimal measurement method for eGFR. Nevertheless, we recommend implementing eGFR equations in routine clinical monitoring of pediatric patients with hemophilia.

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