My 60 yr old brother has just been diagnosed by genetic testing in December 2015. Symptoms started about 4 yrs ago. Noticed he was walking funny at that time. In 2013, he had a seizure which resulted in traumatic brain injury. Now walks with a walker around the house. Uses wheelchair for long distances. Now also having swallowing/choking episodes. Please advise me of any info. you have available. Thank you