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Schwann cells produce myelin sheath around peripheral nerve axons. Myelination is critical for rapid propagation of action potentials, as illustrated by the large number of acquired and hereditary peripheral neuropathies, such as diabetic neuropathy or Charcot-Marie-Tooth (CMT) diseases, that are commonly associated with a process of demyelination. Peripheral neuropathy is a major complication of diabetes, and the pathomechanism of the disease remains poorly studied. Here, we studied the progressive demyelinating process, hearing impairment and blindness observed in the CMT1A mouse model C3. Our results confirm that these mice represent a robust and validated model to study the peripheral neuropathy induced by CMT disorder allowing to determine the efficacy of new pharmacological candidates targeting demyelinating diseases such as CMT1A disorder.