Abstract
Longitudinal evaluation of a seven generation kindred with an inherited conduction system defect and dilated cardiomyopathy demonstrated autosomal dominant transmission of a progressive disorder that both perturbs atrioventricular conduction and depresses cardiac contractility. To elucidate the molecular genetic basis for this disorder, a genome–wide linkage analysis was performed. Polymorphic loci near the centromere of chromosome 1 demonstrated linkage to the disease locus (maximum multipoint lod score = 13.2 in the interval between D1S305 and D1S176). Based on the disease phenotype and map location we speculate that gap junction protein connexin 40 is a candidate for mutations that result in conduction system disease and dilated cardiomyopathy.
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Kass, S., MacRae, C., Graber, H. et al. A gene defect that causes conduction system disease and dilated cardiomyopathy maps to chromosome 1p1–1q1. Nat Genet 7, 546–551 (1994). https://doi.org/10.1038/ng0894-546
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DOI: https://doi.org/10.1038/ng0894-546
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