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Neuromuscul Disord. 2008 Apr;18(4):334-8. doi: 10.1016/j.nmd.2008.01.005. Epub 2008 Apr 3.

A novel mutation in the dynamin 2 gene in a Charcot-Marie-Tooth type 2 patient: clinical and pathological findings.

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INSERM, U582, Institut de Myologie, Paris (F-75013), France.


Mutations in dynamin 2 (DNM2) have been associated with autosomal dominant centronuclear myopathy, dominant intermediate Charcot-Marie-Tooth (CMT) type B and CMT2. Here, we report a novel DNM2 mutation in the Pleckstrin homology domain of DNM2 (p.K559del) in a patient with an axonal length-dependent sensorimotor polyneuropathy predominantly affecting the lower limbs. Neuropathy is associated with congenital cataracts, ophthalmoparesis, ptosis and neutropenia. There was no evidence of a skeletal myopathy on EMG or muscle biopsy. We suggest that this constellation of clinical features can help the diagnosis and selection of patients for direct DNM2 genetic analysis.

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