has material basis in germline mutation in GDF1 right atrial isomerism https://github.com/monarch-initiative/mondo/issues/4521 https://www.malacards.org/card/right_atrial_isomerism right atrial isomerism (disease) MEDGEN:465274 heterotaxy, Visceroatrial, autosomal recessive bilateral right-sidedness sequence splenic agenesis syndrome asplenia with cardiovascular anomalies MedDRA:10068335 Ivemark syndrome asplenia syndrome Ivemark Syndrome RAI UMLS:C3178806 right isomerism A visceral heterotaxy characterized by complete atrioventricular septal defect with a common atrium and univentricular AV connection, total anomalous pulmonary drainage, and transposition or malposition of the great arteries and may be associated with bilateral trilobed lungs, midline liver, asplenia and situs inversus affecting other organs that has material basis in homozygous mutation in the GDF1 gene on chromosome 19p12. DOID:0060856 right atrial isomerism (ivemark) GARD:0006795 polysplenia syndrome MONDO:0008832 Vah, autosomal recessive Orphanet:97548 OMIM:208530 NORD:1305 right atrial isomerism (disease) HP:0011536 Polyasplenia right atrial isomerism visceral heterotaxy