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    Am J Hum Genet. 1998 Jul;63(1):52-4.

    The Nova Scotia (type D) form of Niemann-Pick disease is caused by a G3097-->T transversion in NPC1.

    Greer WL, Riddell DC, Gillan TL, Girouard GS, Sparrow SM, Byers DM, Dobson MJ, Neumann PE.

    Department of Pathology, Faculty of Medicine, Dalhousie University, Halifax, Nova Scotia. wgreer@IS.Dal.ca

    Niemann-Pick type D (NPD) disease is a progressive neurodegenerative disorder characterized by the accumulation of tissue cholesterol and sphingomyelin. This disorder is relatively common in southwestern Nova Scotia, because of a founder effect. Our previous studies, using classic linkage analysis of this large extended kindred, defined the critical gene region to a 13-cM chromosome segment between D18S40 and D18S66. A recently isolated gene from this region, NPC1, is mutated in the majority of patients with Niemann-Pick type C disease. We have identified a point mutation within this gene (G3097-->T; Gly992-->Trp) that shows complete linkage disequilibrium with NPD, confirming that NPD is an allelic variant of NPC1.

    PMID: 9634529 [PubMed - indexed for MEDLINE]

    PMCID: 1377252

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