Description:
NIEMANN-PICK DISEASE, TYPE C1; NPC1
NPC1 GENE; NPC1
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Repository
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NIGMS Human Genetic Cell Repository
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| Subcollection |
Heritable Diseases
Lysosomal Storage Diseases |
| Class |
Disorders of Lipid Metabolism |
| Quantity |
25 µg |
| Quantitation Method |
Please see our FAQ |
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Biopsy Source
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Peripheral vein
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Cell Type
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B-Lymphocyte
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Tissue Type
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Blood
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Transformant
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Epstein-Barr Virus
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Sample Source
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DNA from LCL
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Race
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White
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Family Member
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1
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Relation to Proband
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proband
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Confirmation
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Biochemical characterization - other
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Species
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Homo sapiens
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Common Name
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Human
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Remarks
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| IDENTIFICATION OF SPECIES OF ORIGIN |
Species of Origin Confirmed by Nucleoside Phosphorylase Isoenzyme Electrophoresis |
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| sphingomyelin phosphodiesterase |
According to the submitter, biochemical test results for this subject showed decreased enzyme activity. EC Number: 3.1.4.12; 38% activity. |
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| Gene |
NPC1 |
| Chromosomal Location |
18q11-q12 |
| Allelic Variant 1 |
P237S; NIEMANN-PICK DISEASE, TYPE C1 |
| Identified Mutation |
PRO237SER |
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| Gene |
NPC1 |
| Chromosomal Location |
18q11-q12 |
| Allelic Variant 1 |
; NIEMANN-PICK DISEASE, TYPE C1 |
| Identified Mutation |
c.1947+5G>C |
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| Gene |
NPC1 |
| Chromosomal Location |
18q11-q12 |
| Allelic Variant 2 |
607623.0010; NIEMANN-PICK DISEASE, TYPE C1 |
| Identified Mutation |
ILE1061THR; In an initial study of 25 patients with type C1 Niemann-Pick disease, Millat et al. [Am. J. Hum. Genet. 65: 1321-1329 (1999)] identified a T-to-C transition at nucleotide 3182 of the NPC1 gene that led to an ile1061-to-thr substitution (I1061T) in 3 patients. The mutation, located in exon 21, affected a putative transmembrane domain of the protein. The mutation was particularly frequent in patients with NPC from western Europe, especially France and the U.K. and in Hispanic patients whose roots were in the Upper Rio Grande valley of the U.S. Millat et al. [Am. J. Hum. Genet. 65: 1321-1329 (1999)] concluded that the I1061T mutation originated in Europe and that the high frequency in northern Rio Grande Hispanics resulted from a founder effect. |
| Remarks |
38% of normal sphingomyelinase activity, normal B-galactosidase activity, and impaired cholesterol esterification in fibroblasts; the donor subject is a compound heterozygote; one allele carries a pathogenic splice site mutation c.1947+5G>C (rs770321568, g.41940G>C), as well as a missense mutation c.709C>T [p.Pro237Ser (P237S); rs80358251] in exon 6 of the NPC1 gene; the second allele carries a pathogenic missense mutation c.3182T>C in exon 21 [p.Ile1061Thr (I1061T)] in a transmembrane domain; same subject as GM03123 (fibroblast) and GM25864 (stem cell). |
| Wheeler S, Haberkant P, Bhardwaj M, Tongue P, Ferraz MJ, Halter D, Sprong H, Schmid R, Aerts JMFG, Sullo N, Sillence DJ, Cytosolic glucosylceramide regulates endolysosomal function in Niemann-Pick type C disease Neurobiology of disease127:242-252 2018 |
| PubMed ID: 30872158 |
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| Ramirez-Montealegre D, Pearce DA, Defective lysosomal arginine transport in juvenile Batten disease Human molecular genetics14:3759-73 2005 |
| PubMed ID: 16251196 |
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| Yamamoto T, Nanba E, Ninomiya H, Higaki K, Taniguchi M, Zhang H, Akaboshi S, Watanabe Y, Takeshima T, Inui K, Okada S, Tanaka A, Sakuragawa N, Millat G, Vanier MT, Morris JA, Pentchev PG, Ohno K, NPC1 gene mutations in Japanese patients with Niemann-Pick disease type C. Hum Genet105:10-6 1999 |
| PubMed ID: 10480349 |
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| Levade T, Salvayre R, Lenoir G, Douste-Blazy L, Sphingomyelinase and nonspecific phosphodiesterase activities in Epstein-Barr virus-transformed lymphoid cell lines from Niemann-Pick disease A, B and C. Biochim Biophys Acta793:321-4 1984 |
| PubMed ID: 6324871 |
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