Arina Puzriakova Phenotypes for gene: COX6B1 were changed from Complex IV (Mitochondrial respiratory chain disorders (caused by nuclear variants only), OXPHOS structural subunits); Isolated complex IV deficiency; Cytochrome c oxidase deficiency, 220110; Mitochondrial Diseases; Mitochondrial Respiratory Chain Complex IV Deficiency to Mitochondrial complex IV deficiency, nuclear type 7, OMIM:619051