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Diagnosing Hunter syndrome in pediatric practice: practical considerations and common pitfalls
Barbara K Burton1, Roberto Giugliani
1Division of Genetics, Birth Defects and Metabolism, Children's Memorial Hospital, 2300 Children's Plaza, Chicago, IL 60614, USA. bburton@childrensmemorial.org
European Journal of Pediatrics
|March 3, 2012
Summary
Early diagnosis of Mucopolysaccharidosis II (MPS II), or Hunter syndrome, is crucial for better patient outcomes. Pediatricians and specialists must be aware of subtle signs to ensure timely intervention for this rare genetic disorder.
Area of Science:
- Genetics
- Biochemistry
- Pediatrics
Background:
- Mucopolysaccharidosis II (MPS II), also known as Hunter syndrome, is an X-linked lysosomal storage disorder.
- It results from a deficiency in the enzyme iduronate-2-sulfatase, leading to progressive multi-organ damage and potential cognitive impairment.
Observation:
- MPS II presents insidiously with symptoms overlapping common childhood complaints, making early diagnosis challenging, especially in patients without cognitive impairment (attenuated phenotype).
- Delayed diagnosis can lead to irreversible organ damage before treatment can be initiated.
Findings:
- This review outlines key signs, symptoms, and surgical history suggestive of MPS II.
- It emphasizes practical diagnostic considerations and pitfalls to avoid.
Implications:
- Early enzyme replacement therapy, before irreversible organ damage, offers the greatest clinical benefit.
- Multidisciplinary management facilitated by primary care physicians is essential for optimizing patient outcomes.
- Increased awareness among pediatricians and specialists is critical due to the lack of routine newborn screening for MPS II.
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