question: What is the cause of episodic ataxia type 6?
answer: Episodic ataxia type 6, is caused by mutations in the gene encoding a glial glutamate transporter, the excitatory amino acid transporter-1. Reduced glutamate uptake by mutant excitatory amino acid transporter-1 (EAAT1) has been thought to be the main pathophysiological process in episodic ataxia type 6.