Rapid and cost-effective method for the detection of the c.533G>A mutation in the HEXA gene.

Abstract:

:Tay-Sachs disease is a rare autosomal recessive neurodegenerative disorder that results from mutations in the HEXA gene, leading to β-hexosaminidase A (HexA) α subunit deficiency. An unusual variant of Tay-Sachs disease is known as the B1 variant. Previous studies indicated that, in northern Portugal, this is not only the most common variant but also one of the most prevalent lysosomal storage diseases. Additionally, this variant might also show a higher prevalence in populations of Portuguese and Spanish ancestry. A single mutation is invariably present in at least one of the alleles of B1 variant patients, HEXA mutation c.533G >A. To implement a method for c.533G >A testing in individuals and populations, we have optimized two distinct mutation analysis techniques, one based on restriction fragment length polymorphism analysis and the other based on allelic discrimination. We present the comparison of both methods and their advantages. Mutation screening by allelic discrimination proved to be particularly useful for the studying of large samples of individuals. It is time saving and highly reproducible, and under the conditions used, its cost is lower than the cost of polymerase chain reaction-based restriction fragment length polymorphism analysis.

authors

Ribeiro D,Duarte AJ,Amaral O

doi

10.1089/gtmb.2010.0129

subject

Has Abstract

pub_date

2011-03-01 00:00:00

pages

123-6

issue

3

eissn

1945-0265

issn

1945-0257

journal_volume

15

pub_type

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