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Detection by Urinary GAG Testing of Mucopolysaccharidosis Type II in an At-Risk Spanish Population

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JIMD Reports - Volume 10

Abstract

Hunter syndrome (Mucopolysaccharidosis type II) is an inherited lysosomal storage disorder with potentially severe degenerative consequences. Clinical diagnosis is not easy, although biochemical confirmation is straightforward, and sometimes patients are diagnosed at a late age. It is widely believed, for inborn errors of metabolism in general, that early diagnosis and management is of paramount importance for improving the prognosis of the disease. The objective of this study was to identify specific populations at risk of suffering from Hunter syndrome. Urine samples were obtained from children between the ages of 0 to 18, belonging to known risk groups of mucopolysaccharidosis (MPS) type II, for the semi-quantitative (GAG test) and quantitative determination of glycosaminoglycans (GAG). One case of Hunter syndrome was found among the 130 samples that were collected and analysed. This study supports the feasibility of early diagnosis and the usefulness of screening tests for MPS II in specific paediatric populations.

Competing interests: None declared

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Correspondence to Laura López-Marín .

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Communicated by: Ed Wraith

Synopsis

Synopsis

One case of Hunter syndrome was found among 109 patients with hernias in the first screening study in Europe aimed at the early detection of MPS II.

All authors have made a substantial contribution to the study and all have approved the final draft.

The author who serves as guarantor for the article is Laura López-Marín.

The authors received an unrestricted educational grant from Shire Pharmaceuticals Spain. Medical writing support was provided by Esther Pellicer and Adelphi and supported by Shire Pharmaceuticals Spain.

The authors confirm independence from the sponsors; the content of this article has not been influenced by the sponsors.

This study was conducted in compliance with the recommendations of the Declaration of Helsinki and the Good Clinical Practice (GCP) Guidelines. It was submitted to the appropriate Independent Ethics Committee for approval and complied with Spanish Act No. 15/1999 on Personal Data Protection in relation to the confidentiality of patient data. In all cases, signed informed consent was obtained from patients and/or their parents or guardians.

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López-Marín, L., Gutiérrez-Solana, L.G., Azuara, L.AE., de las Heras, R.S., Rodríguez, A.D., Extremera, V.C. (2012). Detection by Urinary GAG Testing of Mucopolysaccharidosis Type II in an At-Risk Spanish Population. In: Zschocke, J., Gibson, K., Brown, G., Morava, E., Peters, V. (eds) JIMD Reports - Volume 10. JIMD Reports, vol 10. Springer, Berlin, Heidelberg. https://doi.org/10.1007/8904_2012_204

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  • DOI: https://doi.org/10.1007/8904_2012_204

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  • Publisher Name: Springer, Berlin, Heidelberg

  • Print ISBN: 978-3-642-37333-6

  • Online ISBN: 978-3-642-37334-3

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