Missense mutations at homologous positions in the fourth and fifth laminin A G-like domains of eyes shut homolog cause autosomal recessive retinitis pigmentosa

Khan, MI and Collin, RWJ and Arimadyo, Kentar and Micheal, S and Azam, Maleeha and Qureshi, N and Faradz, Sultana M.H. and den Hollander, AI and Qamar, R and Cremers, FPM (2010) Missense mutations at homologous positions in the fourth and fifth laminin A G-like domains of eyes shut homolog cause autosomal recessive retinitis pigmentosa. Molecular Vision , 16 . 2753 -2759.

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Official URL: http://www.molvis.org/molvis/v16/a295

Abstract

Purpose: To describe two novel mutations in the eyes shut homolog (EYS) gene in two families with autosomal recessive retinitis pigmentosa (arRP) from Pakistan and Indonesia. Methods: Genome-wide linkage and homozygosity mapping were performed using single nucleotide polymorphism microarray analysis in affected members of the two arRP families. Sequence analysis was performed to identify genetic changes in protein coding exons of EYS. Results: In the Indonesian and Pakistani families, homozygous regions encompassing the EYS gene at 6q12 were identified, with maximum LOD scores of 1.8 and 3.6, respectively. Novel missense variants in the EYS gene (p.D2767Y and p.D3028Y) were found in the Pakistani and Indonesian families, respectively, that co-segregate with the disease phenotype. Interestingly, the missense variants are located at the same homologous position within the fourth and fifth laminin A G-like domains of EYS. Conclusions: To date, mostly protein-truncating mutations have been described in EYS, while only few patients have been described with pathogenic compound heterozygous missense mutations. The mutations p.D2767Y and p.D3028Y described in this study affect highly conserved residues at homologous positions in laminin A G-like domains and support the notion that missense mutations in EYS can cause arRP.

Item Type:Article
Subjects:R Medicine > RE Ophthalmology
Divisions:Postgraduate Program > Master Program in Biomedical Science
ID Code:27375
Deposited By:Mr. Magister Biomedik Admin
Deposited On:06 May 2011 09:42
Last Modified:06 May 2011 09:44

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