Article
Single sperm analysis of the CAG repeats in the gene for Machado-Joseph disease (MJD1): evidence for non-Mendelian transmission of the MJD1 gene and for the effect of the intragenic CGG/GGG polymorphism on the intergenerational instability.
Human molecular genetics - 1 Jul 1997
Takiyama Y, Sakoe K, Soutome M, Namekawa M, Ogawa T, Nakano I, Igarashi S, Oyake M, Tanaka H, Tsuji S, Nishizawa M
Abstract excerpt
To investigate the mechanism of the meiotic instability of expanded CAG repeats in the gene for Machado-Joseph disease (MJD1), we analyzed the CAG repeat sizes of 1036 single sperm from six individuals with Machado-Joseph disease (MJD). The segregation ratio between single sperm with an expanded allele and those with a normal allele is significantly different (P <0.0001) from the expected 1:1 segregation ratio,...
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