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

被引:76
作者
Greer, WL
Riddell, DC
Gillan, TL
Girouard, GS
Sparrow, SM
Byers, DM
Dobson, MJ
Neumann, PE
机构
[1] Dalhousie Univ, Fac Med, Dept Pathol, Div Mol Pathol & Mol Genet, Halifax, NS, Canada
[2] Dalhousie Univ, Fac Med, Dept Biochem, Halifax, NS, Canada
[3] Dalhousie Univ, Fac Med, Dept Paediat, Halifax, NS, Canada
[4] Dalhousie Univ, Fac Med, Dept Anat & Neurobiol, Halifax, NS, Canada
关键词
D O I
10.1086/301931
中图分类号
Q3 [遗传学];
学科分类号
071007 ; 090102 ;
摘要
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.
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页码:52 / 54
页数:3
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