Progressive External Ophthalmoplegia with Mitochondrial Dna Deletions, Autosomal Dominant 2, also known as peoa2, is related to mitochondrial myopathy and chronic progressive external ophthalmoplegia, and has symptoms including cerebellar ataxia, seizures and muscle weakness. An important gene associated with Progressive External Ophthalmoplegia with Mitochondrial Dna Deletions, Autosomal Dominant 2 is SLC25A4 (Solute Carrier Family 25 Member 4). The drugs 6-hydroxy-2,5,7,8-tetramethylchroman-2-carboxylic acid and Protective Agents have been mentioned in the context of this disorder. Affiliated tissues include skeletal muscle and eye, and related phenotypes are ptosis and progressive external ophthalmoplegia