raremaprare-disease reference indexOrphadata 2026-06-23 · HPO 2026-09-01
ORPHA:404454

Alacrimia-choreoathetosis-liver dysfunction syndrome

Synonyms: NGLY1 deficiency · NGLY1-CDDG

Type
Disease
Group
Disorder
Inheritance
Autosomal recessive
Age of onset
Infancy, Neonatal
Status
active

A rare, genetic, inborn error of metabolism disorder characterized by global developmental delay, hypotonia, choreoathetosis, hypo-/alacrimia, and liver dysfunction which manifests with elevated liver transaminases and hepatocyte cytoplasmic storage material or vacuolization on liver biopsy. Additional features reported include acquired microcephaly, hypo-/areflexia, seizures, peripheral neuropathy, intellectual and language/speech disability, additional ocular anomalies and EEG and brain imaging abnomalities.

1

Names in Orphadata languages

12 of 12 languages
LangNameSynonyms
enAlacrimia-choreoathetosis-liver dysfunction syndromeNGLY1 deficiency · NGLY1-CDDG
frSyndrome d'alacrymie-choréoathétose-hépatopathieDéficit en NGLY1 · NGLY1-CDDG
deAlakrimie-Choreoathetose-Leberdysfunktion-SyndromNGLY1-CDDG · NGLY1-Mangel
esSíndrome de alacrimia-coreoatetosis-disfunción hepáticaDeficiencia de NGLY1 · NGLY1-CDDG
itSindrome da alacrimia, coreoatetosi e disfunzione epaticaDeficit di NGLY1 · NGLY1-CDDG
nlAlacrimie - choreoathetose - leverdisfunctie-syndroomNGLY1-CDDG · NGLY1-deficiëntie
ptSíndrome de alacrimia - coreoatetose - disfunção hepática
plZespół braku łez, choreoatetozy i dysfunkcji wątrobyNGLY1-CDDG · Niedobór NGLY1
csSyndrom zahrnující alakrimii, choreoatetózu a dysfukci jaterDeficit NGLY1 · NGLY1-CDDG
ukСиндром алакрімії-хореоатетозу-печінкової дисфункціїДефіцит NGLY1 · NGLY1-CDDG
zh无泪-舞蹈手足徐动症-肝功能障碍综合征NGLY1缺乏
trAlakrimia-koreoatetoz-karaciğer disfonksiyon sendromuNGLY1-CDDG · NGLY1 deksikliği

Definition in:

2

Cross-references

qualifier = Orphanet mapping relation
SourceCodeQualifierICD relationValidation
OMIM615273Evalidated
ICD-10E77.8NTBTattributedvalidated
ICD-115C54.YNTBTattributedvalidated
MONDO0800044Evalidated
MeSHC000626124Evalidated
UMLSC3808991Evalidated
GARD12315Evalidated

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 (6):

No children.

4

Genes

1 direct
GeneAssociationStatusHGNCEnsemblOMIMLocusNameSource of validation
NGLY1Disease-causing germline mutation(s) (loss of function) inAssessedHGNC:17646ENSG000001510926106613p24.2N-glycanase 124651605[PMID]
5

Prevalence and incidence

2 records
TypeClassValueAreaQualificationValidationSource
Cases/families8 casesWorldwideCase(s)Validated24651605[PMID]_22581936[PMID]
Point prevalence<1 / 1 000 000—WorldwideClass onlyValidatedORPHANET_24651605[PMID]_22581936[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

91 annotations · validated 2019-07-12
HPOTerm (as annotated by Orphanet)Diagnostic
Very frequent (99-80%)
HP:0002059Cerebral atrophy
HP:0002487Hyperkinetic movements
HP:0007141Sensorimotor neuropathy
Frequent (79-30%)
HP:0012447Abnormal myelination
HP:0001344Absent speech
HP:0000522Alacrima
HP:0001272Cerebellar atrophy
HP:0001266Choreoathetosis
HP:0012450Chronic constipation
HP:0025455Decreased CSF 5-hydroxyindolacetic acid concentration
HP:0025458Decreased CSF albumin
HP:0040209Decreased CSF biopterin level
HP:0003785Decreased CSF homovanillic acid concentration
HP:0025457Decreased CSF protein
HP:0003563Decreased LDL cholesterol concentration
HP:0000633Decreased lacrimation
HP:0002376Developmental regression
HP:0002353EEG abnormality
HP:0002910Elevated circulating hepatic transaminase concentration
HP:0001508Failure to thrive
HP:0002123Generalized myoclonic seizure
HP:0001263Global developmental delay
HP:0012153Hypotriglyceridemia
HP:0002540Inability to walk
HP:0002659Increased susceptibility to fractures
HP:0001249Intellectual disability
HP:0002187Intellectual disability, profound
HP:0002870Obstructive sleep apnea
HP:0002465Poor speech
HP:0001518Small for gestational age
Occasional (29-5%)
HP:0001771Achilles tendon contracture
HP:0003086Acromesomelia
HP:0002345Action tremor
HP:0020037Astasia
HP:0002305Athetosis
HP:0010819Atonic seizure
HP:0003447Axonal loss
HP:0002072Chorea
HP:0001374Congenital hip dislocation
HP:0000559Corneal scarring
HP:0002673Coxa valga
HP:0012340Decreased resting energy expenditure
HP:0025336Delayed ability to sit
HP:0012448Delayed myelination
HP:0002750Delayed skeletal maturation
HP:0001332Dystonia
HP:0000297Facial hypotonia
HP:0030194Fatigable weakness of speech muscles
HP:0010821Focal emotional seizure with laughing
HP:0011167Focal tonic seizure
HP:0002909Generalized aminoaciduria
HP:0002121Generalized non-motor (absence) seizure
HP:0002171Gliosis
HP:0002240Hepatomegaly
HP:0001385Hip dysplasia
HP:0011900Hypofibrinogenemia
HP:0001265Hyporeflexia
HP:0031146Impaired oral bolus formation
HP:0031162Impaired oropharyngeal swallow response
HP:0012469Infantile spasms
HP:0001382Joint hypermobility
HP:0003121Limb joint contracture
HP:0031008Lingual dystonia
HP:0001413Micronodular cirrhosis
HP:0001414Microvesicular hepatic steatosis
HP:0001336Myoclonus
HP:0011954Nodular regenerative hyperplasia of liver
HP:0000657Oculomotor apraxia
HP:0002421Poor head control
HP:0008151Prolonged prothrombin time
HP:0002205Recurrent respiratory infections
HP:0004349Reduced bone mineral density
HP:0001929Reduced factor XI activity
HP:0005543Reduced protein C activity
HP:0100899Sclerosis of finger phalanx
HP:0002650Scoliosis
HP:0005484Secondary microcephaly
HP:0003834Shoulder dislocation
HP:0001744Splenomegaly
HP:0025401Staring gaze
HP:0030906Suck reflex
HP:0031051Tarsal sclerosis
HP:0002119Ventriculomegaly
Very rare (<4-1%)
HP:0001488Bilateral ptosis
HP:0000548Cone/cone-rod dystrophy
HP:0011496Corneal neovascularization
HP:0000577Exotropia
HP:0030001Lagophthalmos
HP:0000648Optic atrophy
HP:0000543Optic disc pallor
HP:0000580Pigmentary retinopathy

Run the differential on the 3 obligate / very frequent terms

Annotation source: 31217022[PMID]_27388694[PMID]_24651605[PMID]_29419975[PMID]

7

Sources for this card