Localisation of the MRX3 gene for non-specific X linked mental retardation.
نویسندگان
چکیده
منابع مشابه
Localisation of a gene for non-specific X linked mental retardation (MRX46) to Xq25-q26.
We report linkage data on a new large family with non-specific X linked mental retardation (MRX), using 24 polymorphic markers covering the entire X chromosome. We could assign the underlying disease gene, denoted MRX46, to the Xq25-q26 region. MRX46 is tightly linked to the markers DXS8072, HPRT, and DXS294 with a maximum lod score of 5.12 at theta=0. Recombination events were observed with DX...
متن کامل[Non-specific X-linked mental retardation].
INTRODUCTION Non-specific mental retardation is defined by the absence of somatic, neurological, biochemical or behavioural features that characterise a particular clinical variant and accounts for a large percentage of cases of X-linked mental retardation (XLMR). Genetic linkage studies showed it to have a high rate of genetic heterogeneity. DEVELOPMENT To date, genetic linkage studies or th...
متن کاملLocalisation of the MRX 3 gene for non - specific X linked mental
Abstiract A family is described with five affected males segregating a new gene for non-specific X linked mental retardation (MRX). Linkage analysis localised the gene at Xq28-qter. The maximum lod score was 2-89 with DXS52 (Stl4) at 0=0 0. A recombinant was observed with DXS304 (U6.2) defining the proximal limit to the localisation. No evidence for linkage was determined using markers at sever...
متن کاملX-linked mental retardation.
A survey of the mentally retarded children with an IQ between 30 and 55 born in a 10-year period (1955-64) and now of school age was carried out in New South Wales. The number of propositi who had a similarly affected sib of the same sex was ascertained; 58 boys had a similarly affected brother(s) and 22 girls had a similarly affected sister(s). It is suggested that the excess of affected broth...
متن کاملMapping of a gene for non-specific X linked mental retardation: evidence for linkage to chromosomal region Xp21.1-Xp22.3.
Linkage analysis of a non-specific form of X linked mental retardation (MRX) was performed with 16 polymorphic markers spanning the entire X chromosome in a three generation Italian family, including four male patients with moderate mental retardation. One obligate carrier woman had mild mental retardation and another two had normal intelligence. The results indicate tight linkage to DNA marker...
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ژورنال
عنوان ژورنال: Journal of Medical Genetics
سال: 1991
ISSN: 1468-6244
DOI: 10.1136/jmg.28.6.372