raremaprare-disease reference indexOrphadata 2026-06-23 · HPO 2026-09-01
ORPHA:1329

Complete atrioventricular septal defect

Synonyms: CAVC · Complete AVSD · Complete atrioventricular canal · Complete atrioventricular canal defect · Complete atrioventricular septal defect with atrial and ventricular components

Type
Morphological anomaly
Group
Disorder
Inheritance
Not applicable
Age of onset
Infancy, Neonatal
Status
active

A rare, congenital cardiac anomaly characterized by a common atrioventricular junction with a common AV valve, an interatrial communication just above the common AV valve (ostium primum defect), a posterior interventricular communication (inlet VSD), that results in shunting at both the atrial and ventricular level. Morphologically, the common atrioventricular valve has 4 or 5 leaflets including superior and inferior bridging leaflets with a single annulus.

1

Names in Orphadata languages

12 of 12 languages
LangNameSynonyms
enComplete atrioventricular septal defectCAVC · Complete AVSD · Complete atrioventricular canal · Complete atrioventricular canal defect · Complete atrioventricular septal defect with atrial and ventricular components
frCanal atrioventriculaire completCAVC · Communication atrioventriculaire complète · Communication auriculo-ventriculaire complète · Défaut complet du septum atrioventriculaire · Défaut complet du septum atrioventriculaire avec composantes auriculaires et ventriculaires · Défaut septal atrioventriculaire complet · Défaut septal auriculo-ventriculaire complet
deAtrioventrikulärer Septumdefekt, kompletterCAVC · Kompletter AV-Kanal · Kompletter AVSD
esCanal auriculoventricular completo
itDifetto completo del setto atrioventricolareAVSD completo · CAVC · Canale atrioventricolare completo · Difetto completo del setto atrioventricolare con componenti atriali e ventricolari · Difetto del canale atrioventricolare completo
nlTotaal atrioventriculair septumdefectTotaal AVSD · Totaal atrioventriculair septumdefect met atriale en ventriculaire componenten · CAVC · Compleet atrioventriculair kanaal · Compleet atrioventriculair kanaaldefect
ptDefeito septal auriculo-ventricular completoAVSD completo
plCałkowity ubytek przedsionkowo-komorowyCałkowity ubytek przegrody przedsionkowo-komorowej
csKompletní atrioventrikulární kanálCAVC · Kompletní defekt atrioventrikulárního septa · Kompletní AVSD · Společný atrioventrikulární kanál
ukПовний дефект атріовентрикулярної перегородкиCAVC · Повний атріовентрикулярний канал · Повна вада атріовентрикулярного каналу · Повний дефект атріовентрикулярної перегородки з передсердним та шлуночковим компонентами · Повна комплектація AVSD
zh完全型房室间隔缺损完全性房室管缺损
trTam atriyoventriküler septal defektCAVC · Tam AVSD · Tam atriyoventriküler kanal defekti

Definition in:

2

Cross-references

qualifier = Orphanet mapping relation
SourceCodeQualifierICD relationValidation
ICD-10Q21.2NTBTinclusionvalidated
ICD-11LA87.43Especificvalidated
MONDO0015273Evalidated
UMLSC0344787Evalidated
GARD1454Evalidated

E exact · NTBT this ORPHAcode is narrower than the target · BTNT broader than the target · ND not decided.

3

Classification

Preferential parent (Orphanet linearisation):

Parents in the classifications (1):

Children (3):

Codes that Orphanet moved or referred to this one:

4

Genes

0 direct · 8 via subtypes

Orphanet records no gene directly on this code.

Recorded by Orphanet on subtypes of this disorder:

GeneSubtypeAssociationStatusHGNCEnsemblOMIMLocusNameSource of validation
GATA4ORPHA:99067Complete atrioventricular septal defect with ventricular hypoplasiaDisease-causing germline mutation(s) inAssessedHGNC:4173ENSG000001365746005768p23.1GATA binding protein 418672102[PMID]_17643447[PMID]
GATA4ORPHA:99068Complete atrioventricular septal defect-tetralogy of FallotDisease-causing germline mutation(s) inAssessedHGNC:4173ENSG000001365746005768p23.1GATA binding protein 418672102[PMID]_17643447[PMID]
GATA6ORPHA:99067Complete atrioventricular septal defect with ventricular hypoplasiaDisease-causing germline mutation(s) inAssessedHGNC:4174ENSG0000014144860165618q11.2GATA binding protein 620581743[PMID]
CRELD1ORPHA:99067Complete atrioventricular septal defect with ventricular hypoplasiaMajor susceptibility factor inAssessedHGNC:14630ENSG000001637036071703p25.3CRELD disulfide isomerase 112632326[PMID]_15096951[PMID]
CRELD1ORPHA:99068Complete atrioventricular septal defect-tetralogy of FallotMajor susceptibility factor inAssessedHGNC:14630ENSG000001637036071703p25.3CRELD disulfide isomerase 112632326[PMID]_15096951[PMID]
MEF2CORPHA:576227Complete atrioventricular septal defect without ventricular hypoplasiaMajor susceptibility factor inAssessedHGNC:6996ENSG000000811896006625q14.3myocyte enhancer factor 2C35719119[PMID]
NR2F2ORPHA:99067Complete atrioventricular septal defect with ventricular hypoplasiaMajor susceptibility factor inAssessedHGNC:7976ENSG0000018555110777315q26.2nuclear receptor subfamily 2 group F member 224702954[PMID]
NR2F2ORPHA:99068Complete atrioventricular septal defect-tetralogy of FallotMajor susceptibility factor inAssessedHGNC:7976ENSG0000018555110777315q26.2nuclear receptor subfamily 2 group F member 224702954[PMID]
5

Prevalence and incidence

2 records
TypeClassValueAreaQualificationValidationSource
Prevalence at birth1-5 / 10 00020 / 100 000EuropeValue and classValidated16722604[PMID]_[EXPERT]
Point prevalenceUnknown—WorldwideClass onlyNot yet validatedORPHANET

Value is Orphadata's ValMoy: the mean estimate per 100 000 for prevalence and incidence, the number of cases or families for case reports.

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HPO phenotypes

34 annotations · validated 2021-07-08
HPOTerm (as annotated by Orphanet)Diagnostic
Obligate (100%)
HP:0001674Complete atrioventricular canal defect
HP:0010445Primum atrial septal defect
Very frequent (99-80%)
HP:0003115Abnormal EKG
HP:0031650Abnormal atrioventricular valve physiology
HP:0005120Abnormal cardiac atrium morphology
HP:0025447Displacement of the papillary muscles
HP:0001508Failure to thrive
HP:0012382Left-to-right shunt
HP:0030973Postexertional malaise
HP:0030950Pulmonary venous hypertension
HP:0031664Systolic heart murmur
Frequent (79-30%)
HP:0001640Cardiomegaly
HP:0001635Congestive heart failure
HP:0000961Cyanosis
HP:0011968Feeding difficulties
HP:0002240Hepatomegaly
HP:0000975Hyperhidrosis
HP:0030864Intercostal retractions
HP:0006532Recurrent pneumonia
HP:0001708Right ventricular failure
HP:0001667Right ventricular hypertrophy
HP:0001649Tachycardia
HP:0002789Tachypnea
HP:0030828Wheezing
Occasional (29-5%)
HP:0031595Abnormal P wave
HP:0001678Atrioventricular block
HP:0030830Crackles
HP:0030848Elevated jugular venous pressure
HP:0004890Elevated pulmonary artery pressure
HP:0100786Hypersomnia
HP:0001254Lethargy
HP:0011712Right bundle branch block
HP:0031658Third heart sound
Very rare (<4-1%)
HP:0001999Abnormal facial shape

Run the differential on the 11 obligate / very frequent terms

Annotation source: 32965865[PMID]_16722604[PMID]

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Sources for this card