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J Inherit Metab Dis. 2012 Nov;35(6):1071-9. doi: 10.1007/s10545-012-9474-1. Epub 2012 Mar 23.

Clinical characteristics of adults with slowly progressing mucopolysaccharidosis VI: a case series.

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  • 1Department of Psychiatry, University of Mainz, Mainz, Germany.

Abstract

OBJECTIVE:

To assess clinical features and general health status of adult patients with mucopolysaccharidosis (MPS) VI.

METHODS:

This report includes the clinical history of patients older than 18 years with slowly progressing MPS VI and the retrospective analysis of the outcomes of available data collected between September 2003 and October 2008 at the Center of Pediatric and Adolescent Medicine, University Medical Center, Johannes Gutenberg-University of Mainz, Germany. Variables included were urinary glycosaminoglycan (uGAG) level, mutation analysis, body height, forced vital capacity (FVC), 6-minute walk test, echocardiographic findings, the need for craniocervical decompression surgery, orthopaedic findings and ophthalmological assessments.

RESULTS:

The analysis included nine patients with MPS VI aged 19-29 years. The median age at diagnosis was 12 (range 6-20) years. At the time of the assessment (median age 25 years), median uGAG was 29 (range 15-149) μg/mg creatinine and median height 152 (range 136-161) cm. All patients had a FVC below standard values, seven showed reduced endurance in the 6-minute-walk test, all had valve changes with valve replacement in three, two underwent craniocervical decompression surgery, two underwent carpal tunnel surgery, five had ear/nose/throat (ENT) interventions, seven had hip pain/dysplasia, seven had corneal clouding and two were visually impaired.

CONCLUSIONS:

Although patients with slowly progressing MPS VI are a heterogeneous group showing disease manifestations in several organs, they seem to have some typical characteristics in common. Despite the attenuated clinical course, many of these patients show severe morbidity. Therefore, early diagnosis and proper follow-up and treatment are essential.

PMID:
22441840
[PubMed - indexed for MEDLINE]
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