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Genetic mapping of the spinocerebellar ataxia type 2 gene on human chromosome 12. 1996

A Nechiporuk, and I Lopes-Cendes, and T Nechiporuk, and S Starkman, and E Andermann, and G A Rouleau, and J S Weissenbach, and E Kort, and S M Pulst
Neurogenetics Laboratory, Cedars-Sinai Medical Center, UCLA School of Medicine 90048, USA.

The dominant spinocerebellar ataxias are a genetically heterogeneous group of diseases leading to premature death of neurons in the cerebellum and other parts of the nervous system. The mutation causing SCA1 is on human chromosome (CHR) 6p and SCA3 is on CHR 14q. To refine the location of the SCA2 gene on CHR 12q, we performed genetic linkage analysis between the SCA2 locus and nine Ioci (D12S58, D12S78, D12S317, D12S330, D12S353, D12S84, D12S105, D12S79, and PLA2) in three SCA2 families. The highest pairwise lod scores were obtained between SCA2 and D12S84/D12S105 and D12S79. We determined the best order and genetic distances among these loci in ten multigenerational families by multipoint linkage analysis and established the following order: D12S101-D12S58/IGF1- D12S78-D12S317-D12S330/D12S353-D12S84/D 12S105-D12S79-PLA2. Using this genetic map, multipoint linkage analysis placed SCA2 between D12S84/D12S105 and D12S79.

UI MeSH Term Description Entries
D008126 Lod Score The total relative probability, expressed on a logarithmic scale, that a linkage relationship exists among selected loci. Lod is an acronym for "logarithmic odds." Lod Scores,Score, Lod,Scores, Lod
D008297 Male Males
D002874 Chromosome Mapping Any method used for determining the location of and relative distances between genes on a chromosome. Gene Mapping,Linkage Mapping,Genome Mapping,Chromosome Mappings,Gene Mappings,Genome Mappings,Linkage Mappings,Mapping, Chromosome,Mapping, Gene,Mapping, Genome,Mapping, Linkage,Mappings, Chromosome,Mappings, Gene,Mappings, Genome,Mappings, Linkage
D002881 Chromosomes, Human, Pair 12 A specific pair of GROUP C CHROMOSOMES of the human chromosome classification. Chromosome 12
D002883 Chromosomes, Human, Pair 14 A specific pair of GROUP D CHROMOSOMES of the human chromosome classification. Chromosome 14
D002896 Chromosomes, Human, Pair 6 A specific pair GROUP C CHROMSOMES of the human chromosome classification. Chromosome 6
D005260 Female Females
D005799 Genes, Dominant Genes that influence the PHENOTYPE both in the homozygous and the heterozygous state. Conditions, Dominant Genetic,Dominant Genetic Conditions,Genetic Conditions, Dominant,Condition, Dominant Genetic,Dominant Gene,Dominant Genes,Dominant Genetic Condition,Gene, Dominant,Genetic Condition, Dominant
D005819 Genetic Markers A phenotypically recognizable genetic trait which can be used to identify a genetic locus, a linkage group, or a recombination event. Chromosome Markers,DNA Markers,Markers, DNA,Markers, Genetic,Genetic Marker,Marker, Genetic,Chromosome Marker,DNA Marker,Marker, Chromosome,Marker, DNA,Markers, Chromosome
D006239 Haplotypes The genetic constitution of individuals with respect to one member of a pair of allelic genes, or sets of genes that are closely linked and tend to be inherited together such as those of the MAJOR HISTOCOMPATIBILITY COMPLEX. Haplotype

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