Mitochondrial Complex Iv Deficiency, Nuclear Type 2, also known as cardioencephalomyopathy, fatal infantile, due to cytochrome c oxidase deficiency 1, is related to myopia 6 and myopia, and has symptoms including dyspnea An important gene associated with Mitochondrial Complex Iv Deficiency, Nuclear Type 2 is SCO2 (Synthesis Of Cytochrome C Oxidase 2), and among its related pathways/superpathways is Respiratory electron transport, ATP synthesis by chemiosmotic coupling, and heat production by uncoupling proteins.. Affiliated tissues include spinal cord and skeletal muscle, and related phenotypes are hyperreflexia and hypotonia