A: The variant NC_000022.11:g.42215169C>A in gene TCF20 is classified as 'Uncertain_significance' for Developmental_delay_with_variable_intellectual_impairment_and_behavioral_abnormalities. Molecular consequence: SO:0001583: missense_variant. Variant type: single_nucleotide_variant. Disease database links: MONDO:MONDO:0032745,MedGen:C5193092,OMIM:618430. Review status: criteria provided, single submitter.