Macular Degeneration, X-Linked Atrophic
A number sign (#) is used with this entry because X-linked atrophic macular degeneration can be caused by mutation in the RPGR gene (312610).
Clinical FeaturesAyyagari et al. (2002) described a family in which 10 males had primarily macular atrophy causing progressive loss of visual acuity with minimal peripheral visual impairment. One additional male showed extensive macular degeneration plus peripheral loss of retinal pigment epithelium and choriocapillaries. Full-field electroretinograms (ERGs) showed normal cone and rod responses in some affected males despite advanced macular degeneration.
MappingIn a family with X-linked recessive atrophic macular degeneration, Ayyagari et al. (2002) mapped the disease locus to Xp21.1-p11.4, the region where the RPGR gene is situated.
Molecular GeneticsIn affected members of a family segregating X-linked recessive atrophic macular degeneration, Ayyagari et al. (2002) identified a splice site mutation in the RPGR gene (312610.0017).