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Confirmation of linkage of oculopharyngeal muscular dystrophy to chromosome 14q11.2-q13. 1996

J M Stajich, and J M Gilchrist, and F Lennon, and A Lee, and L Yamaoka, and B Helms, and P C Gaskell, and L Donald, and A D Roses, and J M Vance, and M A Pericak-Vance
Division of Neurology, Duke University Medical Center, Durham, NC 27710, USA.

Oculopharyngeal muscular dystrophy is a late-onset, autosomally dominant disorder characterized by progressive ptosis, dysphagia, and extremity weakness. Linkage of oculopharyngeal muscular dystrophy to 14q11.2-q13 has been reported in a series of French Canadian families. Haplotype analysis in these data shows a single segregating disease chromosome, suggesting a founder effect in this population. We ascertained and sampled for linkage studies 5 multigenerational American families with oculopharyngeal muscular dystrophy. Four of the 5 families have known French Canadian ancestry while the fifth is of English/Scottish origin. A peak multipoint lod score of 6.30 was obtained for the marker MYH7.1 in the families, confirming linkage to 14q11.2-q13. The English/Scottish family exhibited a different chromosomal haplotype for the oculopharyngeal muscular dystrophy alleles than did the families of French Canadian origin. These data suggest that this family may represent a second, possibly independent mutation in this disorder.

UI MeSH Term Description Entries
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
D008126 Lod Score The total relative probability, expressed on a logarithmic scale, that a linkage relationship exists among selected loci. Lod is an acronym for "logarithmic odds." Lod Scores,Score, Lod,Scores, Lod
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
D009801 Oculomotor Muscles The muscles that move the eye. Included in this group are the medial rectus, lateral rectus, superior rectus, inferior rectus, inferior oblique, superior oblique, musculus orbitalis, and levator palpebrae superioris. Extraocular Muscles,Extraocular Rectus Muscles,Inferior Oblique Extraocular Muscle,Inferior Oblique Muscles,Levator Palpebrae Superioris,Musculus Orbitalis,Oblique Extraocular Muscles,Oblique Muscle, Inferior,Oblique Muscle, Superior,Oblique Muscles, Extraocular,Rectus Muscles, Extraocular,Superior Oblique Extraocular Muscle,Superior Oblique Muscle,Extraocular Muscle,Extraocular Muscle, Oblique,Extraocular Muscles, Oblique,Extraocular Oblique Muscle,Extraocular Oblique Muscles,Extraocular Rectus Muscle,Inferior Oblique Muscle,Muscle, Oculomotor,Muscles, Oculomotor,Oblique Extraocular Muscle,Oblique Muscle, Extraocular,Oblique Muscles, Inferior,Oblique Muscles, Superior,Oculomotor Muscle,Rectus Muscle, Extraocular,Superior Oblique Muscles
D010609 Pharyngeal Muscles The muscles of the PHARYNX are voluntary muscles arranged in two layers. The external circular layer consists of three constrictors (superior, middle, and inferior). The internal longitudinal layer consists of the palatopharyngeus, the salpingopharyngeus, and the stylopharyngeus. During swallowing, the outer layer constricts the pharyngeal wall and the inner layer elevates pharynx and LARYNX. Palatopharyngeus,Muscles of Pharynx,Palatopharyngeal Muscle,Salpingopharyngeus,Stylopharyngeus,Velopharyngeal Muscle,Muscle, Palatopharyngeal,Muscle, Pharyngeal,Muscle, Velopharyngeal,Muscles, Pharyngeal,Pharyngeal Muscle,Pharynx Muscle,Pharynx Muscles
D002170 Canada The largest country in North America, comprising 10 provinces and three territories. Its capital is Ottawa.
D002874 Chromosome Mapping Any method used for determining the location of and relative distances between genes on a chromosome. Gene Mapping,Linkage Mapping,Genome Mapping,Chromosome Mappings,Gene Mappings,Genome Mappings,Linkage Mappings,Mapping, Chromosome,Mapping, Gene,Mapping, Genome,Mapping, Linkage,Mappings, Chromosome,Mappings, Gene,Mappings, Genome,Mappings, Linkage
D002883 Chromosomes, Human, Pair 14 A specific pair of GROUP D CHROMOSOMES of the human chromosome classification. Chromosome 14
D004739 England A part of Great Britain within the United Kingdom.
D005602 France A country in western Europe bordered by the Atlantic Ocean, the English Channel, the Mediterranean Sea, and the countries of Belgium, Germany, Italy, Spain, Switzerland, the principalities of Andorra and Monaco, and by the duchy of Luxembourg. Its capital is Paris. Corsica,Saint Pierre and Miquelon,Miquelon and Saint Pierre,Miquelon and St. Pierre,St. Pierre and Miquelon

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