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A new mutation (1062 del 16) of iduronate-2-sulfatase gene from a Chinese patient with Hunter syndrome.

作者信息

Guo Yi-bin, Pan Jing-xin, Meng Ya-xian

机构信息

Department of Medical Genetics, Sun Yat-sen Medical College, Sun Yat-sen University, Guangzhou 510080, China.

出版信息

J Zhejiang Univ Sci B. 2007 Aug;8(8):566-9. doi: 10.1631/jzus.2007.B0566.

Abstract

OBJECTIVE

To identify the mutations of iduronate-2-sulfatase (IDS) gene, to reveal its mutation features, and to establish a basis for genetic counseling and prenatal gene diagnosis of Hunter syndrome.

METHODS

Urine glycosaminoglycans (GAGs) assay, PCR and DNA sequencing were performed to detect mutation of IDS gene of the patient and his parents.

RESULTS

The result showed that the patient was: DS(++), HS(++), KS(-), CS(-), and that both of his parents were negative. A frame-shift deletion mutation (1062 del 16) was identified in exon 7 of the patient's IDS gene. His parents' genotypes were normal.

CONCLUSION

The patient's mutation was not inherited by his parents but a novel one. The mutation probably altered the primary structure and tertiary structure of IDS enzyme protein remarkably and lowered the activity of IDS enzyme greatly. Therefore it is supposed to be the direct cause of the disorder.

摘要

相似文献

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A new mutation (1062 del 16) of iduronate-2-sulfatase gene from a Chinese patient with Hunter syndrome.
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