A: The variant NC_000021.9:g.33551770G>C in gene SON is classified as 'Uncertain_significance' for not_provided|ZTTK_syndrome. Molecular consequence: SO:0001583: missense_variant,SO:0001619: non-coding_transcript_variant,SO:0001627: intron_variant. Variant type: single_nucleotide_variant. Disease database links: MedGen:C3661900|MONDO:MONDO:0014936,MedGen:C4310696,OMIM:617140,Orphanet:500150. Review status: criteria provided, multiple submitters, no conflicts.