Identification of two HEXA mutations causing infantile-onset Tay-Sachs disease in the Persian population

Alireza Haghighi, Jamileh Rezazadeh, Azam Ahmadi Shadmehri, Amirreza Haghighi, Ruth Kornreich, Robert J. Desnick

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4 Scopus citations

Abstract

The Β-hexosaminidase A (HEXA) mutations in the first reported cases of infantile Tay-Sachs disease in the Persian population were identified in two unrelated consanguineous families. The clinical diagnoses of the affected infants were confirmed by their markedly deficient levels of HEXA activity in plasma or peripheral leukocytes. The specific causative mutation in each family was determined by sequencing the HEXA alleles in both sets of related parents. Two mutations were identified: c.1AG >(p.MIV), which obliterated the initiating methionine in codon 1, and c.1177CT> (p.R393X), which predicted a termination codon or nonsense mutation.

Original languageEnglish
Pages (from-to)682-684
Number of pages3
JournalJournal of Human Genetics
Volume56
Issue number9
DOIs
StatePublished - Sep 2011
Externally publishedYes

Keywords

  • GM2 gangliosidosis
  • HEXA
  • Persian
  • TaySachs disease
  • lysosomal storage disorder
  • β-hexosaminidase A

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