Natural History Evaluation of Charcot Marie Tooth Disease (CMT) Types CMT1B, CMT2A, CMT4A, CMT4C, and Others (INC-6601)
Charcot-Marie-Tooth Disease / Posted 5 months ago
This is an observational longitudinal study to determine the natural history and genotype-phenotype correlations of disease causing mutations in Charcot Marie Tooth disease (CMT) type 1B (CMT1B), 2A (CMT2A), 4A (CMT4A), and 4C (CMT4C).
The investigators will also be determine the capability of the newly developed CMT Pediatric Scale (CMT Peds scale) and the Minimal Dataset to measure impairment and perform longitudinal measurements in patients with multiple forms of CMT over a five year window
The inherited peripheral neuropathies are often called Charcot Marie Tooth Disease (CMT), named after the three physician scientists who first described them. These are a heterogenous group of disorders caused by mutations in more than 50 different genes. The diseases cause weakness and loss of sensation in patients. There are no effective treatments for any forms of CMT. There is also limited information on the natural history of how any of the different types of CMT progress and limited outcome measures to measure impairment. The purpose of INC is to investigate the natural history of the different types of CMT, to identify genes that modify the severity of individual types of CMT, to develop and test outcome measures for children with CMT, to develop an interactive website for patients with CMT and to develop the knowledge needed to perform clinical trials in patients with CMT.
To do this, people who have, are suspected to have, or have a family history of an inherited neuropathy will take part in a full-day evaluation. These patients are being seen in order to receive a possible diagnosis of CMT and clinical care, but may also choose to participate in this research project. Most of the testing being performed would be done as part of the standard of care for diagnosing and treating a patient with an inherited neuropathy. Additional testing may be performed on certain subjects if applicable, but the majority of subjects who volunteer for this study are allowing us to use the clinical information obtained during their visit as coded data for natural history purposes and to develop outcome measures.