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
oleh: Osvaldo Artigalás, Giorgio Paskulin, Mariluce Riegel, Maira Burin, Maria Luiza Saraiva-Pereira, Sharbel Maluf, Andrea Kiss, Ida Vanessa D. Schwartz
| Format: | Article |
|---|---|
| Diterbitkan: | Sociedade Brasileira de Genética 2012-01-01 |
Deskripsi
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.