A patient presenting a 22q13 deletion associated with an apparently balanced translocation t(16;22): an illustrative case in the investigation of patients with low ARSA activity

AUTOR(ES)

Artigalás, Osvaldo, Paskulin, Giorgio, Riegel, Mariluce, Burin, Maira, Saraiva-Pereira, Maria Luiza, Maluf, Sharbel, Kiss, Andrea, Schwartz, Ida Vanessa D.

FONTE

Genetics and Molecular Biology

DATA DE PUBLICAÇÃO

2012

RESUMO

A 10-year-old speechless, mentally deficient male, with low arylsulfatase A (ARSA) activity, and presumably, methachromatic leukodystrophy, underwent genetic evaluation. As the clinical picture was not compatible with this diagnosisan ARSA gene and chromosome analysis were performed, showing the presence of a pseudodeficiency ARSA allele and a de novo apparently balanced t(16;22)(p11.2;q13) translocation. A deletion on the long arm of chromosome 22 encompassing the ARSA gene, as shown by FISH and array-CGH, indicated a 22q13 deletion syndrome. This case illustrates the importance of detailed cytogenetic investigation in patients presenting low arylsulfatase A activity and atypical/unspecific clinical features.

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