A: The variant NC_000019.10:g.35658629G>A in gene COX6B1 is classified as 'Likely_benign' for not_provided|Mitochondrial_complex_4_deficiency,_nuclear_type_7|not_specified. Molecular consequence: SO:0001819: synonymous_variant. Variant type: single_nucleotide_variant. Disease database links: MedGen:C3661900|MONDO:MONDO:0033637,MedGen:C5436685,OMIM:619051|MedGen:CN169374. Review status: criteria provided, multiple submitters, no conflicts.