Identification of deletion-duplication in HEXA gene in five children with Tay-Sachs disease from India.

ABSTRACT:

Background

Tay-Sachs disease (TSD) is a sphingolipid storage disorder caused by mutations in the HEXA gene. To date, nearly 170 mutations of HEXA have been described, including only one 7.6 kb large deletion.

Methods

Multiplex Ligation-dependent Probe Amplification (MLPA) study was carried out in 5 unrelated patients for copy number changes where heterozygous and/or homozygous disease causing mutation/s could not be identified in the coding region by sequencing of HEXA gene.

Results

The study has identified the presence of a homozygous deletion of exon-2 and exon-3 in two patients, two patient showed compound heterozygosity with exon 1 deletion combined with missense mutation p.E462V and one patient was identified with duplication of exon-1 with novel variants c.1527-

SUBMITTER: Sheth J 

PROVIDER: S-EPMC6032535 | biostudies-literature | 2018 Jul

REPOSITORIES: biostudies-literature