期刊
EUROPEAN JOURNAL OF HUMAN GENETICS
卷 20, 期 4, 页码 389-397出版社
NATURE PUBLISHING GROUP
DOI: 10.1038/ejhg.2011.203
关键词
keratoconus; keratoconus gene; keratoconus 13q32 locus; DOCK9; IPO5; STK24
资金
- Polish Ministry of Science and Higher Education [NN 402097837, NN 402591740]
Keratoconus (KTCN), a non-inflammatory corneal disorder characterized by stromal thinning, represents a major cause of corneal transplantations. Genetic and environmental factors have a role in the etiology of this complex disease. Previously reported linkage analysis revealed that chromosomal region 13q32 is likely to contain causative gene(s) for familial KTCN. Consequently, we have chosen eight positional candidate genes in this region: MBNL1, IPO5, FARP1, RNF113B, STK24, DOCK9, ZIC5 and ZIC2, and sequenced all of them in 51 individuals from Ecuadorian KTCN families and 105 matching controls. The mutation screening identified one mutation and three sequence variants showing 100% segregation under a dominant model with KTCN phenotype in one large Ecuadorian family. These substitutions were found in three different genes: c. 2262>4C (p. Gln754His) and c.720+43A>G in DOCK9; c.2377-132A>C in IPO5 and c.1053+29G>C in STK24. PolyPhen analyses predicted that c. 2262A>C (Gln754His) is possibly damaging for the protein function and structure. Our results suggest that c. 2262A>C (p. Gln754His) mutation in DOCK9 may contribute to the KTCN phenotype in the large KTCN-014 family. European Journal of Human Genetics (2012) 20, 389-397; doi: 10.1038/ejhg.2011.203; published online 2 November 2011
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