Description:
CEROID LIPOFUSCINOSIS, NEURONAL 2, LATE INFANTILE TYPE; CLN2
CLN2 GENE; CLN2
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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 the Nervous System |
| 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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Relation to Proband
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proband
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Confirmation
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Molecular characterization before cell line submission to CCR
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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 LINE assay |
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| Gene |
CLN2 |
| Chromosomal Location |
11p15.5 |
| Allelic Variant 1 |
607998.0004; CEROID LIPOFUSCINOSIS, NEURONAL 2 |
| Identified Mutation |
IVS5AS, G>C, -1; Sleat et al. [Science 277: 1802-1805, (1997)] described
compound heterozygosity in 2 sibs with LINCL. One allele carried the
arg208-to-ter nonsense mutation (204500.0003); the other allele showed a
splice site mutation, a G-to-C transversion of the consensus AG 3-prime
splice acceptor site immediately preceding 523T of the cDNA sequence. |
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| Gene |
CLN2 |
| Chromosomal Location |
11p15.5 |
| Allelic Variant 2 |
607998.0003; CEROID LIPOFUSCINOSIS, NEURONAL 2 |
| Identified Mutation |
ARG208TER; In two sibs with late-infantile neuronal ceroid lipofuscinosis (LINCL), Sleat et al. [Science 277: 1802-1805, (1997)] found compound heterozygosity for a C-to-T transition that resulted in the conversion of codon 208 (CGA) to a stop codon (TGA). In the other allele, the conserved AG of the intronic 3-prime splice junction sequence was changed to AC, which was predicted to result in intron splicing (204500.0004). Each parent possessed a single different mutant allele. |
| Remarks |
Clinically affected; intelligence declined at age 2 years; seizures and movement dysfunction at age 2 years; EM showed curvilinear profile; donor subject is a compound heterozygote: one allele has a G>C transversion of the consensus AG 3-prime splice acceptor site immediately preceding 523T of the cDNA sequence in the CLN2 (TPP1) gene [IVS5-1G>C] and a second allele has a C>T transition at nucleotide 622 in exon 6 of the CLN2 (TPP1) gene [622C>T] resulting in a substitution of a termination signal for arginine at codon 208 [Arg208Ter (R208X)]. |
| Zhong N, Moroziewicz DN, Ju W, Jurkiewicz A, Johnston L, Wisniewski KE, Brown WT, Heterogeneity of late-infantile neuronal ceroid lipofuscinosis. Genet Med2(6):312-8 2000 |
| PubMed ID: 11339651 |
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