Perinatal. Referring to the period of time surrounding an infant's birth, from the last two months of pregnancy to the first 28 days of life. The TORCH panel tests for perinatal infections.
1 CMT1 is commonly caused by a duplication of a gene on chromosome 17. This gene controls the production of your nervesâ protective myelin sheath. CMT1 is also caused by other gene defects.  CMT2 results from a defect in your peripheral nerve cellsâ axon. This is caused by a defect in your mitofusin 2 gene.
1 There are many forms of CMT (for example, CMT 1-4, CMTX); these forms are related to the mutations in the genes that alter the peripheral nerves and/or their myelin sheaths. 2  Charcot-Marie-Tooth disease is diagnosed with the patient's medical history, family history, and neurological examination.harcot-Marie-Tooth disease, also known as hereditary motor and sensory neuropathy (HMSN) or peroneal muscular atrophy, comprises a group of disorders that affect peripheral nerves. The peripheral nerves lie outside the brain and spinal cord and supply the muscles and sensory organs in the limbs.