| Disease ID | Source | Name | Description |
| 605253 | OMIM | Neuropathy, congenital hypomyelinating, 1, autosomal recessive (CHN1) | A severe degenerating neuropathy that results from a congenital impairment in myelin formation. It is clinically characterized by early onset of hypotonia, areflexia, distal muscle weakness, and very slow nerve conduction velocities (as low as 3m/s). Some patients manifest nearly complete absence of spontaneous limb movements, respiratory distress at birth, and complete absence of myelin shown by electron microscopy of peripheral nerves. The disease is caused by variants affecting the gene represented in this entry. Patients affected by the amyelinating form carry a causative, homozygous deletion encompassing a myelin-specific enhancer of EGR2 (PubMed:22522483). |
| 607678 | OMIM | Charcot-Marie-Tooth disease 1D (CMT1D) | A dominant demyelinating form of Charcot-Marie-Tooth disease, a disorder of the peripheral nervous system, characterized by progressive weakness and atrophy, initially of the peroneal muscles and later of the distal muscles of the arms. Charcot-Marie-Tooth disease is classified in two main groups on the basis of electrophysiologic properties and histopathology: primary peripheral demyelinating neuropathies (designated CMT1 when they are dominantly inherited) and primary peripheral axonal neuropathies (CMT2). Demyelinating neuropathies are characterized by severely reduced nerve conduction velocities (less than 38 m/sec), segmental demyelination and remyelination with onion bulb formations on nerve biopsy, slowly progressive distal muscle atrophy and weakness, absent deep tendon reflexes, and hollow feet. The disease is caused by variants affecting the gene represented in this entry. |
| 145900 | OMIM | Dejerine-Sottas syndrome (DSS) | A severe degenerating neuropathy of the demyelinating Charcot-Marie-Tooth disease category, with onset by age 2 years. Characterized by motor and sensory neuropathy with very slow nerve conduction velocities, increased cerebrospinal fluid protein concentrations, hypertrophic nerve changes, delayed age of walking as well as areflexia. There are both autosomal dominant and autosomal recessive forms of Dejerine-Sottas syndrome. The disease is caused by variants affecting the gene represented in this entry. |