Study Status: Enrolling by invitation
Recruit Status: Enrolling by invitation
Study Type: Observational
Official Title: Tissue Study for Mitochondrial Disorders
Brief Summary: The investigators are studying patients with undefined mitochondrial diseases to identify genetic mutations in nuclear or mitochondrial Deoxyribonucleic Acid (DNA). Most patients with suspected or known mitochondrial diseases have no genetic confirmation. The investigators expect that evaluating tissue samples from patients with mitochondrial disorders will lead us to discover mutations in new or known genes causing mitochondrial dysfunction.