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  • Title: Dent disease in children: diagnostic and therapeutic considerations.
    Author: Szczepanska M, Zaniew M, Recker F, Mizerska-Wasiak M, Zaluska-Lesniewska I, Kilis-Pstrusinska K, Adamczyk P, Zawadzki J, Pawlaczyk K, Ludwig M, Sikora P.
    Journal: Clin Nephrol; 2015 Oct; 84(4):222-30. PubMed ID: 26308078.
    Abstract:
    BACKGROUND: Dent disease (DD) is a rare X-linked tubulopathy characterized by a proximal tubular dysfunction leading to nephrocalcinosis/nephrolithiasis and progressive renal failure. The disease is associated with a mutation either in CLCN5 or OCRL genes. We aim to define clinical and genetic disease characteristics and summarize treatments of Polish patients with DD. METHODS: The study cohort consists of 10 boys (aged 5 - 16.5 years) whose data were collected through POLtube Registry. RESULTS: All of the patients had tubular proteinuria, hypercalciuria, and nephrocalcinosis/nephrolithiasis. Renal impairment and growth deficiency were found in 3 patients and rickets in 2 patients. In total, 9 of 10 patients carried a mutation in the CLCN5 gene. Five of 9 detected mutations were novel. In 1 patient with a clinical phenotype of DD, no mutations in either CLCN5 or OCRL were discovered. Therapy consisted of thiazides in 7 patients, and phosphate supplements and enalapril in 3 cases. Growth hormone therapy was initiated in 3 patients and resulted in improved growth rate. CONCLUSIONS: We report clinical and molecular characterization of Polish children with DD. Our study suggests that this tubulopathy may be generally under-diagnosed in Poland. The study revealed variable treatments, demonstrating a need for therapeutic guidelines.
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