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Founder-haplotype analysis in Fukuyama-type congenital muscular dystrophy (FCMD). 1998

K Kobayashi, and Y Nakahori, and K Mizuno, and M Miyake, and T Kumagai, and A Honma, and I Nonaka, and Y Nakamura, and K Tokunaga, and T Toda
Human Genome Center, Institute of Medical Science, University of Tokyo, Japan.

Fukuyama-type congenital muscular dystrophy (FCMD) is an autosomal recessive, severe muscular dystrophy associated with brain anomalies. After our initial mapping of the FCMD locus to 9q31-33, we performed linkage disequilibrium analysis, which led us to suspect that the FCMD gene lay within a region of less than 100 kb containing D9S2107. In the present study, we developed two new microsatellites (D9S2170 and D9S2171) in close vicinity to D9S2107 and examined haplotypes of FCMD chromosomes by using four markers (cen-D9S2105-D9S2170-D9S2171-D9S2107-tel). As 82% of the FCMD chromosomes that we examined shared the founder haplotype (138-192-147-183) and 94% of the FCMD patients in our panel carried founder haplotypes on one or both chromosomes, the data supported the hypothesis of a single founder of this disease in the Japanese population. Eight haplotypes different from the founder's were observed in FCMD chromosomes, indicating that eight different FCMD mutations in addition to the founder's have occurred in Japan. Moreover, we have detected several historical recombinations that have disrupted the founder haplotype at D9S2105 or D9S2170 and conclude that the FCMD gene is probably located just centromeric to D9S2170.

UI MeSH Term Description Entries
D007564 Japan A country in eastern Asia, island chain between the North Pacific Ocean and the Sea of Japan, east of the Korean Peninsula. The capital is Tokyo. Bonin Islands
D008040 Genetic Linkage The co-inheritance of two or more non-allelic GENES due to their being located more or less closely on the same CHROMOSOME. Genetic Linkage Analysis,Linkage, Genetic,Analyses, Genetic Linkage,Analysis, Genetic Linkage,Genetic Linkage Analyses,Linkage Analyses, Genetic,Linkage Analysis, Genetic
D008297 Male Males
D009136 Muscular Dystrophies A heterogeneous group of inherited MYOPATHIES, characterized by wasting and weakness of the SKELETAL MUSCLE. They are categorized by the sites of MUSCLE WEAKNESS; AGE OF ONSET; and INHERITANCE PATTERNS. Muscular Dystrophy,Myodystrophica,Myodystrophy,Dystrophies, Muscular,Dystrophy, Muscular,Myodystrophicas,Myodystrophies
D002899 Chromosomes, Human, Pair 9 A specific pair of GROUP C CHROMSOMES of the human chromosome classification. Chromosome 9
D005260 Female Females
D005808 Genes, Recessive Genes that influence the PHENOTYPE only in the homozygous state. Conditions, Recessive Genetic,Genetic Conditions, Recessive,Recessive Genetic Conditions,Condition, Recessive Genetic,Gene, Recessive,Genetic Condition, Recessive,Recessive Gene,Recessive Genes,Recessive Genetic Condition
D006239 Haplotypes The genetic constitution of individuals with respect to one member of a pair of allelic genes, or sets of genes that are closely linked and tend to be inherited together such as those of the MAJOR HISTOCOMPATIBILITY COMPLEX. Haplotype
D006801 Humans Members of the species Homo sapiens. Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man
D018703 Founder Effect A phenomenon that is observed when a small subgroup of a larger POPULATION establishes itself as a separate and isolated entity. The subgroup's GENE POOL carries only a fraction of the genetic diversity of the parental population resulting in an increased frequency of certain diseases in the subgroup, especially those diseases known to be autosomal recessive. Effect, Founder,Effects, Founder,Founder Effects

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