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- W193446871 abstract "Autosomal dominant keratitis (ADK) is an eye disease characterized by anterior stromal corneal opacification and vascularization in the peripheral cornea. Progression into the central cornea may compromise visual acuity. Other anterior segment features include minimal radial defects of the iris stroma. Posterior segment involvement is characterized by foveal hypoplasia with minimal effect on visual acuity. Aniridia is a second autosomal dominantly inherited ocular disorder defined by structural defects of the iris, frequently severe enough to cause an almost complete absence of iris. This may be accompanied by other anterior segment manifestations, including cataract and keratitis. Posterior segment involvement in aniridia is characterized by foveal hypoplasia resulting in a highly variable impairment of visual acuity, often with nystagmus. Aniridia is usually inherited as an autosomal dominant disease and occurs in 1 in 50,000 to 100,000 people. Aniridia has been shown to result from mutations in PAX-6, a gene thought to regulate fetal eye development. The similar clinical findings in ADK and aniridia, with the similar patterns of inheritance, compelled us to investigate if these two ocular disorders are variants of the same genetic disorder. We have tested for linkage between PAX-6 and ADK within an ADK family with 33 members overmore » four generations, including 11 affected individuals. Linkage studies reveal that D11S914 (located within 3 cM of PAX-6) does not recombine with ADK (LOD score 3.61; {theta} = 0.00), consistent with PAX-6 mutations being responsible for ADK. Direct sequencing of PAX-6 RT-PCR products from ADK patients is underway to identify the mutation within the PAX-6 gene that results in ADK. The linkage of PAX-6 with ADK, along with a recent report that mutations in PAX-6 also underlie Peter`s anomaly, implicates PAX-6 widely in anterior segment malformations.« less" @default.
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- W193446871 date "1994-09-01" @default.
- W193446871 modified "2023-09-24" @default.
- W193446871 title "The anterior segment disorder autosomal dominant keratitis is linked to the Aniridia/PAX-6 gene" @default.
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