Autosomal dominant cerulean cataract is associated with a chain termination mutation in the human beta-crystallin gene CRYBB2
| Autor: | Dennis W. Schultz, Dante M. LaMorticella, Roque D. Carrero-Valenzuela, Michael Litt, Irene H. Maumenee, Thomas N. Mitchell, Patricia L. Kramer |
|---|---|
| Rok vydání: | 1997 |
| Předmět: |
Male
genetic structures Cerulean Eye disease Molecular Sequence Data chemical and pharmacologic phenomena Biology medicine.disease_cause Polymerase Chain Reaction Cataract Cataracts Crystallin Genetics medicine Humans Amino Acid Sequence Deoxyribonucleases Type II Site-Specific Molecular Biology Genetics (clinical) Genes Dominant Mutation Base Sequence Homozygote General Medicine Exons Congenital nuclear cataract medicine.disease Crystallins eye diseases Introns Congenital cataracts Female Chromosome 22 |
| Zdroj: | Human molecular genetics. 6(5) |
| ISSN: | 0964-6906 |
| Popis: | Congenital cataracts are a common major abnormality of the eye that frequently cause blindness in infants. At least a third of all cases are familial; autosomal dominant congenital cataract (ADCC) appears to be the most common familial form in the Western world. Cerulean cataracts have peripheral bluish and white opacifications in concentric layers with occasional central lesions arranged radially. Although the opacities may be observed during fetal development and childhood, usually visual acuity is only mildly reduced until adulthood, when lens extraction is generally necessary. We have been studying a family (ADCC-1) with cerulean blue ADCC, in which the affected daughter of a first cousin mating was presumed to be homozygous for the cataract gene. Recently, we mapped an ADCC gene in this family to a region of chromosome 22 containing three beta-crystallin genes. Here we report that a chain-termination mutation in CRYBB2 is associated with ADCC in this family. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|