A: The variant NC_000021.9:g.33552919_33552972dup in gene SON is classified as 'Likely_benign' for not_provided|SON-related_disorder|ZTTK_syndrome. Molecular consequence: SO:0001619: non-coding_transcript_variant,SO:0001627: intron_variant,SO:0001821: inframe_insertion. Variant type: Duplication. Disease database links: MedGen:C3661900|.|MONDO:MONDO:0014936,MedGen:C4310696,OMIM:617140,Orphanet:500150. Review status: criteria provided, multiple submitters, no conflicts.