A thorough review of outcome measures that assess disease progression has not been established for any of the subcategories of Alexander disease. These results will be crucial to our understanding of disease presentation and progression. Providing this information about the pathophysiology will allow for effective development of clinical trials to test therapies and the future use of neuroprotective agents in children.

The purpose of this study to learn more about the brain function of females with Rett Syndrome and how it compares to the brain function of typically developing females. The primary investigator of the study is Dr. Eric Marsh. For our research to be successful we need to partner with families who have a typically developing daughter between the age of 1 and 17. If your child agrees to help us with our study she will be asked to:

• Complete intelligence testing
• Receive an Evoked Potential measurement - this is a non-invasive procedure similar to an EEG.
• Complete yearly follow up visits