raremaprare-disease reference indexOrphadata 2026-06-23 · HPO 2026-09-01
ORPHA:1330

Partial atrioventricular septal defect

Synonyms: PAVC · Partial AVSD · Partial atrioventricular canal defect

Type
Morphological anomaly
Group
Disorder
Inheritance
Not applicable
Age of onset
All ages
Status
active

A rare congenital cardiac malformation that is a variant of an atrioventricular septal defect (AVSD) with an interatrial communication (ostium primum defect) just above the common atrioventricular (AV) valve, no interventricular communication just below the atrioventricular valve, a common atrioventricular junction but separate right and left atrioventricular valvar orifices, and a three-leaflet, left-sided component of the common atrioventricular valve (''cleft''). Shunting is restricted to the atrial level because of fusion of the leaflets of the common AV valve with the crest of the ventricular septum.

1

Names in Orphadata languages

12 of 12 languages
LangNameSynonyms
enPartial atrioventricular septal defectPAVC · Partial AVSD · Partial atrioventricular canal defect
frCanal atrioventriculaire partielPAVC · CAV partiel · Communication atrioventriculaire partielle · Communication auriculo-ventriculaire partielle · Défaut septal atrioventriculaire partiel · Défaut septal auriculo-ventriculaire partiel
deAtrioventrikulärer Septumdefekt, partiellerAtrioventrikulärer Kanal, partieller · PAVC · Partieller AVSD
esCanal auriculoventricular parcialCAVP · DSAV parcial · Defecto del septo auriculoventricular parcial · PAVC
itDifetto parziale del setto atrioventricolareAVSD parziale · Difetto parziale del canale atrioventricolare · PAVC
nlPartieel atrioventriculair septumdefectPAVC · Partieel AVSD · Partieel defect van atrioventriculair kanaal
ptCanal auriculo-ventricular parcial
plCzęściowy kanał przedsionkowo-komorowy= en
csČástečný atrioventrikulární kanálPAVC · Částečný defekt atrioventrikulárního kanálu
ukЧасткова атріовентрикулярна комунікаціяЧасткова вада атріовентрикулярного каналу · Частковий AVSD · PAVC
zh部分房室间隔缺损部分性房室管畸形
trKısmi atriyoventriküler septal defektPAVC · Kısmi AVSD · Kısmi atriyoventriküler kanal defekti

Definition in:

2

Cross-references

qualifier = Orphanet mapping relation
SourceCodeQualifierICD relationValidation
ICD-10Q21.2NTBTattributedvalidated
ICD-11LA87.40Especificvalidated
MONDO0015275Evalidated
MeSHC536112Evalidated
UMLSC0344735Evalidated
GARD4229Evalidated

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 (2):

4

Genes

0 direct · 2 via subtypes

Orphanet records no gene directly on this code.

Recorded by Orphanet on subtypes of this disorder:

GeneSubtypeAssociationStatusHGNCEnsemblOMIMLocusNameSource of validation
CRELD1ORPHA:576235Partial atrioventricular septal defect without ventricular hypoplasiaDisease-causing germline mutation(s) (loss of function) inAssessedHGNC:14630ENSG000001637036071703p25.3CRELD disulfide isomerase 112632326[PMID]_15096951[PMID]_21080147[PMID]
GATA4ORPHA:576232Partial atrioventricular septal defect with ventricular hypoplasiaDisease-causing germline mutation(s) (loss of function) inAssessedHGNC:4173ENSG000001365746005768p23.1GATA binding protein 417643447[PMID]
5

Prevalence and incidence

2 records
TypeClassValueAreaQualificationValidationSource
Prevalence at birth1-5 / 10 00020 / 100 000EuropeValue and classNot yet validated23040494[PMID]
Point prevalence1-5 / 10 00030 / 100 000EuropeValue and classValidated[EXPERT]_17341403[PMID]_12084585[PMID]

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

6

HPO phenotypes

25 annotations · validated 2019-05-21
HPOTerm (as annotated by Orphanet)Diagnostic
Obligate (100%)
HP:0011577Partial atrioventricular canal defect
Frequent (79-30%)
HP:0009020Exercise-induced muscle fatigue
HP:0002875Exertional dyspnea
HP:0030148Heart murmur
HP:0001653Mitral regurgitation
HP:0001962Palpitations
HP:0002205Recurrent respiratory infections
Occasional (29-5%)
HP:0001702Abnormal tricuspid valve morphology
HP:0001681Angina pectoris
HP:0010772Anomalous pulmonary venous return
HP:0001650Aortic valve stenosis
HP:0001692Atrial arrhythmia
HP:0004749Atrial flutter
HP:0006689Bacterial endocarditis
HP:0001647Bicuspid aortic valve
HP:0001680Coarctation of aorta
HP:0011565Common atrium
HP:0031298Coronary sinus enlargement
HP:0001719Double outlet right ventricle
HP:0030853Heterotaxy
HP:0004383Hypoplastic left heart
HP:0001643Patent ductus arteriosus
HP:0001279Syncope
HP:0001636Tetralogy of Fallot
HP:0002326Transient ischemic attack

Run the differential on the 1 obligate / very frequent terms

Annotation source: 29722020[PMID]_14762371[PMID]

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Sources for this card