A: The variant NC_000020.11:g.13785203T>A in gene NDUFAF5 is classified as 'Uncertain_significance' for Mitochondrial_complex_I_deficiency,_nuclear_type_1. Molecular consequence: SO:0001583: missense_variant,SO:0001619: non-coding_transcript_variant,SO:0001623: 5_prime_UTR_variant. Variant type: single_nucleotide_variant. Disease database links: MONDO:MONDO:0100224,MedGen:CN257533,OMIM:252010. Review status: criteria provided, single submitter.