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Recurrent Mutation in the First Zinc Finger of the Orphan Nuclear Receptor NR2E3 Causes Autosomal Dominant Retinitis Pigmentosa

2007; Elsevier BV; Volume: 81; Issue: 1 Linguagem: Inglês

10.1086/518426

1537-6605

Frauke Coppieters, Bart P. Leroy, Diane Beysen, Jan Hellemans, Karolien De Bosscher, Guy Haegeman, Kirsten Robberecht, Wim Wuyts, Paul Coucke, Elfride De Baere,

Retinoids in leukemia and cellular processes

"Autosomal dominant retinitis pigmentosa" (adRP) refers to a genetically heterogeneous group of retinal dystrophies, in which 54% of all cases can be attributed to 17 disease loci. Here, we describe the localization and identification of the photoreceptor cell-specific nuclear receptor gene NR2E3 as a novel disease locus and gene for adRP. A heterozygous mutation c.166G-->A (p.Gly56Arg) was identified in the first zinc finger of NR2E3 in a large Belgian family affected with adRP. Overall, this missense mutation was found in 3 families affected with adRP among 87 unrelated families with potentially dominant retinal dystrophies (3.4%), of which 47 were affected with RP (6.4%). Interestingly, affected members of these families display a novel recognizable NR2E3-related clinical subtype of adRP. Other mutations of NR2E3 have previously been shown to cause autosomal recessive enhanced S-cone syndrome, a specific retinal phenotype. We propose a different pathogenetic mechanism for these distinct dominant and recessive phenotypes, which may be attributed to the dual key role of NR2E3 in the regulation of photoreceptor-specific genes during rod development and maintenance.