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Fragile X syndrome Tadaaki HORI 1 , Masatake YAMAUCHI 1 , Satsuki TSUJI 1 , Naohiko SEKI 2 1Genome Research Group, National Institute of Radiological Sciences 2Laboratory of Gene Structure I, Kazusa DNA Research Institute Keyword: 脆弱X症候群 , (CCG)nリピート , 動的突然変異 , DNAメチル化 pp.450-457
Published Date 1997/6/10
DOI https://doi.org/10.11477/mf.1431900963
  • Abstract
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The fragile X syndrome is one of the most common genetic diseases and is the most common form of familial mental handicap. This syndrome is known to be associated with the cytogenetic expression of a folate-sensitive fragile site on the long arm of human X chromosome at Xq27.3 (FRAXA), but has a very unusual mode of inheritance. It has recently been characterized as involving an unusual expansion of a heritable unstable trinucleotide repeat, (CCG)n, in the 5'-untranslated region of a FMR1 gene at the FRAXA locus.


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電子版ISSN 1882-1243 印刷版ISSN 0001-8724 医学書院

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