Butterfly-shaped pattern dystrophy: a genetic, clinical, and histopathological report

Archives of Ophthalmology
Kang ZhangDonald J Zack

Abstract

To identify the disease-causing mutation in a large family segregating dominantly inherited butterfly-shaped pattern dystrophy (BPD) and to describe the microscopic pathological changes observed in a member of this family. Seventeen individuals at risk for dominantly inherited BPD in a family were examined and blood samples obtained. Linkage analysis and mutation screening of the human retinal degeneration slow (RDS)/peripherin locus were performed. Light and electron microscopic examinations were performed on 1 postmortem eye of 1 affected individual. Four individuals demonstrated macular degenerative changes with diminished visual acuity, and 3 others exhibited early signs of atrophy without visual deficits. Microscopic examination of the left eye of 1 patient revealed an area of total loss of the retinal pigment epithelium (RPE) and photoreceptor cell layer with intact choriocapillaris and lipofuscin-containing cells in the subretinal space. Outside the area of RPE atrophy, the RPE was greatly distended by lipofuscin. The disease locus in this family was mapped to 6p21.2, the region of the RDS/peripherin gene. Further analysis identified a G-->A change at nucleotide position 637 of RDS/peripherin, predicting a novel Cys213Ty...Continue Reading

Citations

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