Summary
Analysis of Ashkenazi families with Hunter patients in Israel demonstrated the complete absence of new mutations among the probands' mothers. Furthermore, in these families a significant deviation of the segregation ratio between the Hunter gene and the normal allele was demonstrated among offspring of heterozygous mothers or siblings of affected children. This may be due to pre- or postzygotic prenatal selection, favoring the X chromosome carrying the Hunter gene among Ashkenazi Jews.
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Zlotogora, J., Schaap, T., Zeigler, M. et al. Hunter syndrome among Ashkenazi Jews in Israel; evidence for prenatal selection favoring the Hunter allele. Hum Genet 71, 329–332 (1985). https://doi.org/10.1007/BF00388459
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DOI: https://doi.org/10.1007/BF00388459