Mitochondrial Myopathy-Lactic Acidosis-Deafness Syndrome, also known as mitochondrial myopathy-lactic acidosis-hearing loss syndrome, is related to mitochondrial myopathy with lactic acidosis. An important gene associated with Mitochondrial Myopathy-Lactic Acidosis-Deafness Syndrome is PNPLA8 (Patatin Like Phospholipase Domain Containing 8). Affiliated tissues include skeletal muscle, and related phenotypes are sensorineural hearing impairment and myopathy