A: The variant NC_000019.10:g.18868918_18868943del in gene GDF1 is classified as 'Likely_pathogenic' for Right_atrial_isomerism|not_provided. Molecular consequence: SO:0001589: frameshift_variant,SO:0001624: 3_prime_UTR_variant. Variant type: Deletion. Disease database links: Human_Phenotype_Ontology:HP:0011536,MONDO:MONDO:0008832,MedGen:C3178806,OMIM:208530,Orphanet:97548|MedGen:C3661900. Review status: criteria provided, multiple submitters, no conflicts.