Localization of a non-specific X-linked mental retardation gene, MRX23, to Xq23-q24
نویسندگان
چکیده
منابع مشابه
[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 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 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...
متن کاملX linked mental retardation: a clinical guide.
Mental retardation is more common in males than females in the population, assumed to be due to mutations on the X chromosome. The prevalence of the 24 genes identified to date is low and less common than expansions in FMR1, which cause Fragile X syndrome. Systematic screening of all other X linked genes in X linked families with mental retardation is currently not feasible in a clinical settin...
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ژورنال
عنوان ژورنال: Human Molecular Genetics
سال: 1996
ISSN: 1460-2083
DOI: 10.1093/hmg/5.3.411