Author(s): Tuschl K, Gal A, Paschke E, Kircher S, Bodamer OA
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Abstract Mucopolysaccharidosis type II (Hunter disease, iduronate-2-sulfatase deficiency) was diagnosed in a 4-year-old female by demonstrating low iduronate-2-sulfatase activity both in leukocytes and fibroblasts and by the presence of a novel, complex rearrangement of the iduronate-2-sulfatase gene in heterozygous form. Mucopolysaccharidosis type II is inherited in an X-linked recessive manner and consequently females are rare. The disease phenotype in this case is due to complete unilateral inactivation of the nonmutant paternal X chromosome of the patient. The case presented here underscores the fact that a diagnosis of mucopolysaccharidosis type II should be suspected in any female who presents with the relevant clinical symptoms.
This article was published in Pediatr Neurol
and referenced in Journal of Clinical & Experimental Cardiology