Abstract
Vance et al. have reported linkage of hereditary motor and sensory neuropathy type I (HMSN I) to the pericentromeric region of chromosome 17. We have studied eight families with HMSN I (also called the hypertrophic form of Charcot-Marie-Tooth disease) for linkage of the disease locus to polymorphic loci in the centromeric region of chromosome 17. Linkage has been confirmed for D17S58 (EW301) with a maximum lod score of 5.89 at theta = 0.08 and for D17S71 (pA10-41) with a maximum lod score of 3.22 at theta = 0.08. EW301 is on 17p, 5.5 centimorgans from the centromere. Two families, previously reported as being linked to the Duffy blood group locus on chromosome 1, were included in this study, and one now provides positive lod scores for chromosome 17 markers. There was no evidence of heterogeneity.
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