A: The variant NC_000022.11:g.42212227dup in gene TCF20 is classified as 'Pathogenic' for not_provided|Developmental_delay_with_variable_intellectual_impairment_and_behavioral_abnormalities. Molecular consequence: SO:0001589: frameshift_variant. Variant type: Duplication. Disease database links: MedGen:C3661900|MONDO:MONDO:0032745,MedGen:C5193092,OMIM:618430. Review status: criteria provided, multiple submitters, no conflicts.