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Late-Onset Autosomal Dominant Macular Degeneration Caused by Deletion of the CRX Gene. 2023

Samar Yahya, and Claire E L Smith, and James A Poulter, and Martin McKibbin, and Gavin Arno, and Jamie Ellingford, and Kati Kämpjärvi, and Muhammad I Khan, and Frans P M Cremers, and Alison J Hardcastle, and Bruce Castle, and David H W Steel, and Andrew R Webster, and Graeme C Black, and Mohammed E El-Asrag, and Manir Ali, and Carmel Toomes, and Chris F Inglehearn, and , and
Leeds Institute of Medical Research, University of Leeds, St James's University Hospital, Leeds, United Kingdom; Department of Medical Genetics, School of Medicine, King Abdulaziz University, Rabigh, Saudi Arabia.

To characterize the phenotype observed in a case series with macular disease and determine the cause. Multicenter case series. Six families (7 patients) with sporadic or multiplex macular disease with onset at 20 to 78 years, and 1 patient with age-related macular degeneration. Patients underwent ophthalmic examination; exome, genome, or targeted sequencing; and/or polymerase chain reaction (PCR) amplification of the breakpoint, followed by cloning and Sanger sequencing or direct Sanger sequencing. Clinical phenotypes, genomic findings, and a hypothesis explaining the mechanism underlying disease in these patients. All 8 cases carried the same deletion encompassing the genes TPRX1, CRX, and SULT2A1, which was absent from 382 control individuals screened by breakpoint PCR and 13 096 Clinical Genetics patients with a range of other inherited conditions screened by array comparative genomic hybridization. Microsatellite genotypes showed that these 7 families are not closely related, but genotypes immediately adjacent to the deletion breakpoints suggest they may share a distant common ancestor. Previous studies had found that carriers for a single defective CRX allele that was predicted to produce no functional CRX protein had a normal ocular phenotype. Here, we show that CRX whole-gene deletion in fact does cause a dominant late-onset macular disease.

UI MeSH Term Description Entries
D008268 Macular Degeneration Degenerative changes in the RETINA usually of older adults which results in a loss of vision in the center of the visual field (the MACULA LUTEA) because of damage to the retina. It occurs in dry and wet forms. Maculopathy,Maculopathy, Age-Related,Age-Related Macular Degeneration,Age-Related Maculopathies,Age-Related Maculopathy,Macular Degeneration, Age-Related,Macular Dystrophy,Maculopathies, Age-Related,Age Related Macular Degeneration,Age Related Maculopathies,Age Related Maculopathy,Age-Related Macular Degenerations,Degeneration, Macular,Dystrophy, Macular,Macular Degeneration, Age Related,Macular Degenerations,Macular Dystrophies,Maculopathies,Maculopathy, Age Related
D010375 Pedigree The record of descent or ancestry, particularly of a particular condition or trait, indicating individual family members, their relationships, and their status with respect to the trait or condition. Family Tree,Genealogical Tree,Genealogic Tree,Genetic Identity,Identity, Genetic,Family Trees,Genealogic Trees,Genealogical Trees,Genetic Identities,Identities, Genetic,Tree, Family,Tree, Genealogic,Tree, Genealogical,Trees, Family,Trees, Genealogic,Trees, Genealogical
D010641 Phenotype The outward appearance of the individual. It is the product of interactions between genes, and between the GENOTYPE and the environment. Phenotypes
D006801 Humans Members of the species Homo sapiens. Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man
D015534 Trans-Activators Diffusible gene products that act on homologous or heterologous molecules of viral or cellular DNA to regulate the expression of proteins. Nuclear Trans-Acting Factor,Trans-Acting Factors,Trans-Acting Factor,Trans-Activator,Transactivator,Transactivators,Factor, Nuclear Trans-Acting,Factor, Trans-Acting,Factors, Trans-Acting,Nuclear Trans Acting Factor,Trans Acting Factor,Trans Acting Factors,Trans Activator,Trans Activators,Trans-Acting Factor, Nuclear
D055028 Comparative Genomic Hybridization A method for comparing two sets of chromosomal DNA by analyzing differences in the copy number and location of specific sequences. It is used to look for large sequence changes such as deletions, duplications, amplifications, or translocations. Array Comparative Genomic Hybridization,Array-Based Comparative Genomic Hybridization,Comparative Genome Hybridization,Array Based Comparative Genomic Hybridization,Comparative Genome Hybridizations,Comparative Genomic Hybridizations,Genome Hybridization, Comparative,Genome Hybridizations, Comparative,Genomic Hybridization, Comparative,Genomic Hybridizations, Comparative,Hybridization, Comparative Genome,Hybridization, Comparative Genomic,Hybridizations, Comparative Genome,Hybridizations, Comparative Genomic
D018398 Homeodomain Proteins Proteins encoded by homeobox genes (GENES, HOMEOBOX) that exhibit structural similarity to certain prokaryotic and eukaryotic DNA-binding proteins. Homeodomain proteins are involved in the control of gene expression during morphogenesis and development (GENE EXPRESSION REGULATION, DEVELOPMENTAL). Homeo Domain Protein,Homeobox Protein,Homeobox Proteins,Homeodomain Protein,Homeoprotein,Homeoproteins,Homeotic Protein,Homeo Domain Proteins,Homeotic Proteins,Domain Protein, Homeo,Protein, Homeo Domain,Protein, Homeobox,Protein, Homeodomain,Protein, Homeotic,Proteins, Homeo Domain,Proteins, Homeobox,Proteins, Homeodomain,Proteins, Homeotic

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