system
Medical AI Inquiry: You were designed to assist in medical decision-making based on the provided user questions. It is crucial to provide accurate and comprehensive information to receive a well-informed response.
user
Fredrich's ataxia is caused by which type of mutation
assistant
The correct answer is  *friedreich ataxia is caused by expansion of a GAA trinucleotide repeat in the 1st intron of a gene on chromosome 9q13 that encodes frataxin. Ref Harrison20th edition pg 2332