Mitochondrial Complex Iii Deficiency, Nuclear Type 8, is also known as mitochondrial complex iii deficiency nuclear type 8, and has symptoms including ataxia, lethargy and muscle weakness. An important gene associated with Mitochondrial Complex Iii Deficiency, Nuclear Type 8 is LYRM7 (LYR Motif Containing 7). Affiliated tissues include skeletal muscle and brain, and related phenotypes are intellectual disability and spasticity