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  • Title: Regional localization of a gene for nonspecific XLMR to Xp11.3-p11. 23 (MRX51) and tentative localization of an MRX gene to Xq23-q26.1.
    Author: Claes S, Volcke P, Devriendt K, Holvoet M, Raeymaekers P, Cassiman JJ, Fryns JP.
    Journal: Am J Med Genet; 1999 Jul 30; 85(3):283-7. PubMed ID: 10398244.
    Abstract:
    Two families with nonspecific X-linked mental retardation (MRX) are presented. In the first family, MRX51, three male patients showed mild to borderline mental retardation. Multipoint linkage analysis yielded a maximal LOD score of 2.10 between markers DXS8012 and DXS1003, localizing the MRX51 gene at Xp11.3-p11.23. In the second family, XLMR7, three men showed moderate mental retardation (MR), and one possible female carrier had mild MR. Multipoint linkage analysis yielded an LOD score of 1.80 between markers DXS8063 and DXS1047, situating the disease gene at Xq23-q26.1. When the analysis was performed considering the affected female to be an expressing heterozygote carrier of the disease mutation, a maximal LOD score of 2.10 was found in the same region.
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