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Am J Med Genet. 1996 Jul 12;64(1):125-30.

Regional localization of two MRX genes to Xq28 (MRX28) and to Xp11.4-Xp22.12 (MRX33).

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1
Abteilung Pädiatrische Genetik an der Kinderpoliklinik der Ludwig-Maximilians-Universität München, Germany.

Abstract

Two genes responsible for a nonspecific form of X-linked mental retardation (MRX28 and MRX33) were localized by linkage analysis with 40 highly polymorphic DNA markers situated along the entire the X chromosome. In family 1, the gene could be mapped within a 14-cM interval at Xq28, distal to the recombining marker DXS1113 (MRX28). The maximum LOD score was 2.75, with DXS52 at phi = .0. In family 2, the gene was localized within a 30-cM interval at Xp11.4-22.12 between the recombining markers DXS365 and MAOB, including the DMD gene (MRX33). Maximum LOD scores of 2.82 were obtained with markers DMD-STR49, DMD-DysII, CYBB, and DXS1068.

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