Confirmation of linkage of Duane's syndrome and refinement of the disease locus to an 8.8-cM interval on chromosome 2q31.
Duane's syndrome is a congenital abnormality of eye movement, which may be inherited as an autosomal dominant trait but usually occurs sporadically. Genetic mapping in a Mexican family has recently identified a locus for Duane's syndrome within a 17.8-cM region of chromosome 2q31. The region was flanked by the microsatellite markers D2S2330 and D2S364. We performed linkage and haplotype analysis in a four-generation UK family with autosomal dominant transmission of Duane's syndrome. Linkage to 2q31 was confirmed with a maximum logarithm of differences (lod) score of 3.3 at theta = 0. The genetic interval was reduced to an 8.8-cM region between markers D2S326 and D2S364 that includes the candidate homeobox D gene cluster.
Evans
J C
JC
Molecular Genetics, Division of Clinical Science, School of Postgraduate Medicine and Health Sciences, University of Exeter, UK.
Frayling
T M
TM
Ellard
S
S
Gutowski
N J
NJ
D002874:Chromosome Mapping; D002889:Chromosomes, Human, Pair 2 / Q000235:genetics*; D004370:Duane Retraction Syndrome / Q000235:genetics*; D005260:Female; D005799:Genes, Dominant / Q000235:genetics; D008040:Genetic Linkage / Q000235:genetics*; D006239:Haplotypes / Q000235:genetics; D006801:Humans; D008126:Lod Score; D008297:Male; D018895:Microsatellite Repeats; D010375:Pedigree