A: The variant NC_000022.11:g.42212712G>C in gene TCF20 is classified as 'Pathogenic/Likely_pathogenic' for Developmental_delay_with_variable_intellectual_impairment_and_behavioral_abnormalities|Intellectual_disability,_mild|Myoclonus|Autism. Molecular consequence: SO:0001587: nonsense. Variant type: single_nucleotide_variant. Disease database links: MONDO:MONDO:0032745,MedGen:C5193092,OMIM:618430|Human_Phenotype_Ontology:HP:0001256,Human_Phenotype_Ontology:HP:0006908,Human_Phenotype_Ontology:HP:0007119,MedGen:C0026106|Human_Phenotype_Ontology:HP:0001336,Human_Phenotype_Ontology:HP:0002535,Human_Phenotype_Ontology:HP:0007087,MedGen:C0027066|Human_Phenotype_Ontology:HP:0000717,MONDO:MONDO:0005260,MeSH:D001321,MedGen:C0004352,OMIM:209850. Review status: criteria provided, multiple submitters, no conflicts.