raremaprare-disease reference indexOrphadata 2026-06-23 · HPO 2026-09-01
ORPHA:52

Alagille syndrome

Synonyms: Alagille-Watson syndrome · Arteriohepatic dysplasia · Syndromic bile duct paucity

Type
Malformation syndrome
Group
Disorder
Inheritance
Autosomal dominant
Age of onset
All ages
Status
active

A rare developmental disease characterized by the variable association of chronic cholestasis due to paucity of intrahepatic bile ducts, congenital heart disease including pulmonary artery stenosis, butterfly-shaped vertebrae, posterior embryotoxon, characteristic facies, frequent growth retardation, glomerular/tubular kidney disease, and diffuse vascular arterial anomalies.

1

Names in Orphadata languages

12 of 12 languages
LangNameSynonyms
enAlagille syndromeAlagille-Watson syndrome · Arteriohepatic dysplasia · Syndromic bile duct paucity
frSyndrome d'AlagilleDysplasie artério-hépatique · Paucité des voies biliaires syndromique · Syndrome d'Alagille-Watsons
deAlagille-SyndromAlagille-Watson-Syndrom · Dysplasie, arteriohepatische · Intrahepatische Gallenganghypoplasie, syndromale Form
esSíndrome de AlagilleDisplasia arteriohepática
itSindrome di AlagilleDelezione 20p11.2 · Displasia arterioepatica · Ipoplasia dei dotti biliari, forma sindromica
nlSyndroom van AlagilleArteriohepatische dysplasie · Syndromaal galweggebrek · Syndroom van Alagille-Watson
ptSíndrome AlagilleDisplasia arteriohepática · Escassez de ductos biliares, forma sindrómica
plZespół Alagille'aZespół skąpości dróg żółciowych · Dysplazja tętnic wątrobowych · Zespół Alagille'a i Watsona
csAlagillův syndromArteriohepatická dysplázie · Alagillův-Watsonův syndrom · Syndromická atrézie žlučových cest · Alagille-Watsonův syndrom
ukСиндром АлажіляСиндром Алагілла-Уотсона · Артеріопечінкова дисплазія · Синдром недостатності жовчних проток
zhAlagille综合征综合征性肝胆管缺失
trAlagille sendromuAlagille-Watson sendromu · Arteriohepatik displazi · Sendromik safra kanalı yetersizliği

Definition in:

2

Cross-references

qualifier = Orphanet mapping relation
SourceCodeQualifierICD relationValidation
OMIM118450Evalidated
OMIM610205BTNTvalidated
ICD-10Q44.7NTBTinclusionvalidated
ICD-11LB20.0YNTBTindexvalidated
MONDO0007318Evalidated
MeSHD016738Evalidated
UMLSC0085280Evalidated
GARD804Evalidated
MedDRA10053870Evalidated

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 (10):

Children (3):

4

Genes

0 direct · 3 via subtypes

Orphanet records no gene directly on this code.

Recorded by Orphanet on subtypes of this disorder:

GeneSubtypeAssociationStatusHGNCEnsemblOMIMLocusNameSource of validation
JAG1ORPHA:261619Alagille syndrome due to a JAG1 point mutationDisease-causing germline mutation(s) inAssessedHGNC:6188ENSG0000010138460192020p12.2jagged canonical Notch ligand 121934706[PMID]
NOTCH2ORPHA:261629Alagille syndrome due to a NOTCH2 point mutationDisease-causing germline mutation(s) inAssessedHGNC:7882ENSG000001342506002751p12notch receptor 221934706[PMID]
JAG1ORPHA:261600Alagille syndrome due to 20p12 microdeletionRole in the phenotype ofAssessedHGNC:6188ENSG0000010138460192020p12.2jagged canonical Notch ligand 121934706[PMID]
5

Prevalence and incidence

4 records
TypeClassValueAreaQualificationValidationSource
Prevalence at birth1-9 / 100 0002.5 / 100 000EuropeValue and classValidated23881058[PMID]
Prevalence at birth1-9 / 100 0001.4 / 100 000AustraliaValue and classValidated559475[PMID]_[EXPERT]
Point prevalence1-9 / 100 000—AustraliaClass onlyValidated559475[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.

6

HPO phenotypes

43 annotations · validated 2016-06-01
HPOTerm (as annotated by Orphanet)Diagnostic
Very frequent (99-80%)
HP:0001396Cholestasis
HP:0001131Corneal dystrophy
HP:0001508Failure to thrive
HP:0002240Hepatomegaly
HP:0006571Reduced number of intrahepatic bile ducts
HP:0001629Ventricular septal defect
Frequent (79-30%)
HP:0003312Abnormal form of the vertebral bodies
HP:0004617Butterfly vertebral arch
HP:0000280Coarse facial features
HP:0002007Frontal bossing
HP:0001511Intrauterine growth retardation
HP:0003189Long nose
HP:0000307Pointed chin
HP:0000411Protruding ear
HP:0000311Round face
HP:0003298Spina bifida occulta
HP:0100585Telangiectasia of the skin
HP:0003422Vertebral segmentation defect
Occasional (29-5%)
HP:0000615Abnormal pupil morphology
HP:0000772Abnormal rib morphology
HP:0000069Abnormality of the ureter
HP:0001631Atrial septal defect
HP:0000248Brachycephaly
HP:0004209Clinodactyly of the 5th finger
HP:0000028Cryptorchidism
HP:0000490Deeply set eye
HP:0000823Delayed puberty
HP:0002750Delayed skeletal maturation
HP:0000494Downslanted palpebral fissures
HP:0012368Flat face
HP:0000316Hypertelorism
HP:0000822Hypertension
HP:0003022Hypoplasia of the ulna
HP:0001256Intellectual disability, mild
HP:0000563Keratoconus
HP:0000347Micrognathia
HP:0000100Nephrotic syndrome
HP:0004969Peripheral pulmonary artery stenosis
HP:0008678Renal hypoplasia/aplasia
HP:0009882Short distal phalanx of finger
HP:0000322Short philtrum
HP:0001328Specific learning disability
HP:0000486Strabismus

Run the differential on the 6 obligate / very frequent terms

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Sources for this card