A: The variant NC_000019.10:g.18134622G>A in gene MAST3 is classified as 'Conflicting_classifications_of_pathogenicity' for Developmental_and_epileptic_encephalopathy_108|Pervasive_developmental_disorder|not_provided|MAST3-related_disorder. Molecular consequence: SO:0001583: missense_variant. Variant type: single_nucleotide_variant. Disease database links: MONDO:MONDO:0859314,MedGen:C5774253,OMIM:620115|MONDO:MONDO:0000594,MedGen:C0524528,Orphanet:168778|MedGen:C3661900|.. Review status: criteria provided, conflicting classifications.