raremaprare-disease reference indexOrphadata 2026-06-23 · HPO 2026-09-01
ORPHA:354

GM1 gangliosidosis

Synonyms: Beta-galactosidase-1 deficiency · GLB1 deficiency · Landing disease

Type
Disease
Group
Disorder
Inheritance
Autosomal recessive
Age of onset
Childhood
Status
active

GM1 gangliosidosis is a rare lysosomal storage disorder characterized biochemically by deficient beta-galactosidase activity and clinically by a wide range of variable neurovisceral, ophthalmological and dysmorphic features.

1

Names in Orphadata languages

12 of 12 languages
LangNameSynonyms
enGM1 gangliosidosisBeta-galactosidase-1 deficiency · GLB1 deficiency · Landing disease
frGangliosidose à GM1Déficit en GLB1 · Déficit en bêta-galactosidase-1 · Maladie de Landing
deGM1-GangliosidoseBeta-Galaktosidase 1-Mangel · GLB1-Mangel · Landing-Krankheit
esGangliosidosis GM1Deficiencia de GLB1 · Deficiencia de beta-galactosidasa-1 · Enfermedad de Landing
itGangliosidosi GM1Deficit di GLB1 · Deficit di beta-galattosidasi-1 · Malattia di Landing
nlGM1-gangliosidoseBèta-galactosidase-1-deficiëntie · GLB1-deficiëntie · Ziekte van Landing
ptGangliosidose GM1Deficiência de beta-galactosidase · Doença de Landing
plGangliozydoza GM1Choroba Landinga · Niedobór beta-galaktozydazy-1 · Niedobór GLB1
csGM1 gangliosidózaDeficit beta-galaktosidázy 1 · Deficit GLB1 · Landingova nemoc
ukGM1 гангліозидозДефіцит бета-галактозидази-1 · Дефіцит GLB1 · Хвороба Лендінга
zhGM1神经节苷脂贮积症β-半乳糖苷酶-1缺乏症
trGM1 gangliosidozGLB1 eksikliği · Landing hastalığı · Beta-galaktosidaz-1 eksikliği

Definition in:

2

Cross-references

qualifier = Orphanet mapping relation
SourceCodeQualifierICD relationValidation
OMIM230500BTNTvalidated
OMIM230600BTNTvalidated
OMIM230650BTNTvalidated
ICD-10E75.1NTBTinclusionvalidated
ICD-115C56.00NTBTindexvalidated
MONDO0018149Evalidated
MeSHD016537Evalidated
UMLSC0085131Evalidated
GARD10891Evalidated

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 (4):

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
GLB1ORPHA:79255GM1 gangliosidosis type 1Disease-causing germline mutation(s) inAssessedHGNC:4298ENSG000001702666114583p22.3galactosidase beta 124156116[PMID]
GLB1ORPHA:79256GM1 gangliosidosis type 2Disease-causing germline mutation(s) inAssessedHGNC:4298ENSG000001702666114583p22.3galactosidase beta 124156116[PMID]
GLB1ORPHA:79257GM1 gangliosidosis type 3Disease-causing germline mutation(s) inAssessedHGNC:4298ENSG000001702666114583p22.3galactosidase beta 124156116[PMID]
5

Prevalence and incidence

5 records
TypeClassValueAreaQualificationValidationSource
Prevalence at birth1-9 / 1 000 0000.75 / 100 000EuropeValue and classValidatedORPHANET
Prevalence at birth1-5 / 10 00027 / 100 000MaltaValue and classValidated9323577[PMID]_[EXPERT]
Prevalence at birth1-9 / 100 0005.9 / 100 000BrazilValue and classValidated10517258[PMID]_[EXPERT]
Point prevalenceUnknown—WorldwideClass onlyNot yet validatedORPHANET
Prevalence at birth1-9 / 1 000 0000.34 / 100 000SwedenValue and classValidated25274184[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

90 annotations · validated 2020-04-06
HPOTerm (as annotated by Orphanet)Diagnostic
Very frequent (99-80%)
HP:0000940Abnormal diaphysis morphology
HP:0000944Abnormal metaphysis morphology
HP:0005930Abnormality of epiphysis morphology
HP:0004345Abnormality of ganglioside metabolism
HP:0010318Aplasia/Hypoplasia of the abdominal wall musculature
HP:0002829Arthralgia
HP:0410263Brain imaging abnormality
HP:0000280Coarse facial features
HP:0008166Decreased beta-galactosidase activity
HP:0000457Depressed nasal ridge
HP:0001347Hyperreflexia
HP:0002383Infectious encephalitis
HP:0002011Morphological central nervous system abnormality
HP:0000639Nystagmus
HP:0100670Rough bone trabeculation
HP:0001744Splenomegaly
HP:0001824Weight loss
Frequent (79-30%)
HP:0002500Abnormal cerebral white matter morphology
HP:0003312Abnormal form of the vertebral bodies
HP:0001627Abnormal heart morphology
HP:0002071Abnormality of extrapyramidal motor function
HP:0100022Abnormality of movement
HP:0002167Abnormality of speech or vocalization
HP:0000924Abnormality of the skeletal system
HP:0000951Abnormality of the skin
HP:0001251Ataxia
HP:0100490Camptodactyly of finger
HP:0100543Cognitive impairment
HP:0002376Developmental regression
HP:0001508Failure to thrive
HP:0001288Gait disturbance
HP:0007325Generalized dystonia
HP:0002230Generalized hirsutism
HP:0000212Gingival overgrowth
HP:0001263Global developmental delay
HP:0001433Hepatosplenomegaly
HP:0003307Hyperlordosis
HP:0001252Hypotonia
HP:0000023Inguinal hernia
HP:0001387Joint stiffness
HP:0000158Macroglossia
HP:0000303Mandibular prognathia
HP:0001250Seizure
HP:0004322Short stature
HP:0002652Skeletal dysplasia
HP:0001257Spasticity
HP:0000486Strabismus
HP:0001072Thickened skin
HP:0001337Tremor
HP:0002317Unsteady gait
Occasional (29-5%)
HP:0008046Abnormal retinal vascular morphology
HP:0000045Abnormality of the scrotum
HP:0025190Bilateral tonic-clonic seizure with generalized onset
HP:0000618Blindness
HP:0000455Broad nasal tip
HP:0001638Cardiomyopathy
HP:0010729Cherry red spot of the macula
HP:0001635Congestive heart failure
HP:0007957Corneal opacity
HP:0005280Depressed nasal bridge
HP:0000943Dysostosis multiplex
HP:0002015Dysphagia
HP:0001332Dystonia
HP:0011968Feeding difficulties
HP:0002007Frontal bossing
HP:0002020Gastroesophageal reflux
HP:0001543Gastroschisis
HP:0001290Generalized hypotonia
HP:0001007Hirsutism
HP:0001789Hydrops fetalis
HP:0002808Kyphosis
HP:0009826Limb undergrowth
HP:0000343Long philtrum
HP:0000369Low-set ears
HP:0000400Macrotia
HP:0011369Mongolian blue spot
HP:0000160Narrow mouth
HP:0000648Optic atrophy
HP:0012523Oral aversion
HP:0001643Patent ductus arteriosus
HP:0000926Platyspondyly
HP:0001622Premature birth
HP:0002205Recurrent respiratory infections
HP:0500049Retinopathy of prematurity
HP:0002650Scoliosis
HP:0001629Ventricular septal defect
Very rare (<4-1%)
HP:0011951Aspiration pneumonia
HP:0025013Decerebrate rigidity
HP:0040197Encephalomalacia
HP:0011471Gastrostomy tube feeding in infancy

Run the differential on the 12 obligate / very frequent terms

Annotation source: 24156116[PMID]_30187681[PMID]

7

Sources for this card