Journal
NEUROLOGY
Volume 69, Issue 3, Pages 291-295Publisher
LIPPINCOTT WILLIAMS & WILKINS
DOI: 10.1212/01.wnl.0000265820.51075.61
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- Telethon [GUP04009] Funding Source: Medline
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Background: Recently, mutations affecting different domains of dynamin-2 (DNM2) were associated alternatively with autosomal dominant centronuclear myopathy or dominant intermediate (demyelinating and axonal) Charcot-Marie-Tooth disease (CMT) type B. Objective: To assess the etiologic role of DNM2 in CMT. Methods: We performed a mutational screening of DNM2 exons 13 through 16 encoding the pleckstrin homology domain in a large series of CMT patients with a broad range of nerve conduction velocities and without mutations in more common genes. Results: We identified two novel DNM2 mutations that cosegregated with purely axonal CMT in two pedigrees without clinical evidence of primary myopathy. Conclusion: Patients with axonal Charcot-Marie-Tooth disease type 2 neuropathy without mutations in more common genes should undergo investigation for DNM2 pleckstrin homology.
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