A novel recessive mutation in the gene ELOVL4 causing neuro- ichthyotic disorder

نویسندگان

  • Hina Mir
  • Mazhar Mustafa Memon
  • Muhammad Nasim Khan
  • Wasim Ahmad
چکیده

Background: Neuro-ichthyotic disorder characterized by ichthyosis, spastic quadriplegia and mental retardation is a rare condition, caused by recessive mutations in the gene ELOVL4, encoding elongase-4 protein. The objective of the study was to search for sequence variants in the gene ELOVL4 in three affected individuals of a consanguineous Pakistani family exhibiting features of neuroichthyotic disorder. Methods: Linkage in the family was searched by genotyping microsatellite markers linked to the gene ELOVL4, mapped at chromosome 6p14.1. Exons and splice junction sites of the gene ELOVL4 were polymerase chain reaction amplified and sequenced in an automated DNA sequencer. Results: DNA sequence analysis revealed a novel homozygous nonsense mutation (c.78C>G; p.Tyr26*). Conclusions: The homozygous nonsense mutation (p.Tyr26*), identified here, is only the third recessive mutation detected in the gene ELOVL4.

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تاریخ انتشار 2012