raremaprare-disease reference indexOrphadata 2026-06-23 · HPO 2026-09-01
ORPHA:137888

Auriculocondylar syndrome

Synonyms: Question mark ear syndrome

Type
Malformation syndrome
Group
Disorder
Inheritance
Autosomal dominant, Autosomal recessive
Age of onset
Infancy, Neonatal
Status
active

A rare, genetic dysostosis with predominant craniofacial involvement characterized by bilateral external ear malformations, mandibular condyle hypoplasia, microstomia, micrognathia, microglossia and facial asymmetry. Additional manifestations include hypotonia, ptosis, cleft palate, full cheeks, developmental delay, hearing impairment and respiratory distress. Significant intra- and interfamilial phenotypic variation has been reported.

1

Names in Orphadata languages

12 of 12 languages
LangNameSynonyms
enAuriculocondylar syndromeQuestion mark ear syndrome
frSyndrome auriculo-condylaireSyndrome des oreilles en forme de point d'interrogation
deAurikulo-kondyläres SyndromFragezeichenohr-Syndrom
esSíndrome aurículo-condilarSíndrome de la oreja en punto de interrogación · Síndrome de orejas en signo de interrogación
itSindrome auricolo-condilareSindrome delle orecchie a forma di punto interrogativo
nlAuriculocondylair syndroom"Vraagtekenoor"-syndroom
ptSíndrome Auriculo-condilar
plZespół uszno-kłykciowy= en
csAurikulokondylární syndromSyndrom malformace ucha ve tvaru otazníku
ukАурикулокондилярний синдромСиндром вуха у вигляді знака питання
zh耳-髁突综合征问号耳综合征
trAurikulokondiler sendromSoru işareti kulak sendromu

Definition in:

2

Cross-references

qualifier = Orphanet mapping relation
SourceCodeQualifierICD relationValidation
OMIM602483BTNTvalidated
OMIM612798BTNTvalidated
OMIM614669BTNTvalidated
OMIM615706BTNTvalidated
ICD-10Q75.8NTBTattributedvalidated
ICD-11LD2F.16NTBTindexvalidated
MONDO0000107Evalidated
MeSHC538270Evalidated
UMLSC1865295Evalidated
GARD9798Evalidated

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 (3):

No children.

4

Genes

3 direct
GeneAssociationStatusHGNCEnsemblOMIMLocusNameSource of validation
EDN1Disease-causing germline mutation(s) inAssessedHGNC:3176ENSG000000784011312406p24.1endothelin 124268655[PMID]
GNAI3Disease-causing germline mutation(s) inAssessedHGNC:4387ENSG000000651351393701p13.3G protein subunit alpha i322560091[PMID]
PLCB4Disease-causing germline mutation(s) inAssessedHGNC:9059ENSG0000010133360081020p12.3-p12.2phospholipase C beta 422560091[PMID]
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Prevalence and incidence

2 records
TypeClassValueAreaQualificationValidationSource
Point prevalence<1 / 1 000 000—EuropeClass onlyNot yet validatedORPHANET
Cases/families50 casesWorldwideCase(s)Validated22560091[PMID]_23315542[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

34 annotations · validated 2018-11-19
HPOTerm (as annotated by Orphanet)Diagnostic
Very frequent (99-80%)
HP:0000377Abnormal pinna morphology
HP:0009902Cleft helix
HP:0007628Mandibular condyle hypoplasia
Frequent (79-30%)
HP:0000377Abnormal pinna morphology
HP:0009895Abnormality of the crus of the helix
HP:0010754Abnormality of the temporomandibular joint
HP:0008772Aplasia/Hypoplasia of the external ear
HP:0000193Bifid uvula
HP:0000175Cleft palate
HP:0000678Dental crowding
HP:0000689Dental malocclusion
HP:0000324Facial asymmetry
HP:0000293Full cheeks
HP:0000162Glossoptosis
HP:0000347Micrognathia
HP:0000160Narrow mouth
HP:0002870Obstructive sleep apnea
HP:0100277Periauricular skin pits
HP:0000358Posteriorly rotated ears
HP:0000384Preauricular skin tag
HP:0030022Question mark ear
HP:0002098Respiratory distress
HP:0025267Snoring
HP:0000183Tongue muscle weakness
Occasional (29-5%)
HP:0011968Feeding difficulties
HP:0001290Generalized hypotonia
HP:0001263Global developmental delay
HP:0011802Hamartoma of tongue
HP:0000365Hearing impairment
HP:0000256Macrocephaly
HP:0007627Mandibular condyle aplasia
HP:0000171Microglossia
HP:0000508Ptosis
Very rare (<4-1%)
HP:0030713Vein of Galen aneurysmal malformation

Run the differential on the 3 obligate / very frequent terms

Annotation source: 20733479[PMID]_23315542[PMID]_16114046[PMID]_23315542[PMID]_16114046[PMID]

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Sources for this card