Study Status: Recruiting
Recruit Status: Recruiting
Study Type: Observational
Official Title: A Prospective Observational Study of Patients With Primary Mitochondrial Disease (SPIMM-300)
Brief Summary: This is an observational study of patients with Primary Mitochondrial Disease with either signs or symptoms suggestive of myopathy. The Investigator will identify potential patients through existing medical records and one on-site visit.