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Erschienen in: neurogenetics 4/2004

01.12.2004 | Original Article

Fine mapping of 16q-linked autosomal dominant cerebellar ataxia type III in Japanese families

verfasst von: Ryuki Hirano, Hiroshi Takashima, Ryuichi Okubo, Keiko Tajima, Yuji Okamoto, Shimon Ishida, Kazuhito Tsuruta, Takayo Arisato, Hitoshi Arata, Masanori Nakagawa, Mitsuhiro Osame, Kimiyoshi Arimura

Erschienen in: Neurogenetics | Ausgabe 4/2004

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Abstract.

The autosomal dominant cerebellar ataxias (ADCAs) are a clinically and genetically heterogeneous group of disorders. To date, at least 11 genes and 13 additional loci have been identified in ADCAs. Despite phenotypic differences, spinocerebellar ataxia 4 (SCA4) and Japanese 16q-linked ADCA type III map to the same region of 16q22.1. We report four Japanese families with pure cerebellar ataxia and a disease locus at 16q22.1. Our families yielded a peak lod score of 6.01 at marker D16S3141. To refine the candidate region, we carried out genetic linkage studies in four pedigrees with a high density set of DNA markers from chromosome 16q22.1. Our linkage data suggest that the disease locus for 16q-ADCA type III is within the 1.25-Mb interval delineated by markers 17msm and CTTT01. We screened for mutations in 36 genes within the critical region. Our critical region lies within the linkage interval reported for SCA4 and for Japanese 16q-ADCA type III. These data suggest that the ADCA that we have characterized is allelic with SCA4 and Japanese 16q-linked ADCA type III.
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Metadaten
Titel
Fine mapping of 16q-linked autosomal dominant cerebellar ataxia type III in Japanese families
verfasst von
Ryuki Hirano
Hiroshi Takashima
Ryuichi Okubo
Keiko Tajima
Yuji Okamoto
Shimon Ishida
Kazuhito Tsuruta
Takayo Arisato
Hitoshi Arata
Masanori Nakagawa
Mitsuhiro Osame
Kimiyoshi Arimura
Publikationsdatum
01.12.2004
Verlag
Springer-Verlag
Erschienen in
Neurogenetics / Ausgabe 4/2004
Print ISSN: 1364-6745
Elektronische ISSN: 1364-6753
DOI
https://doi.org/10.1007/s10048-004-0194-z

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