raremaprare-disease reference indexOrphadata 2026-06-23 · HPO 2026-09-01
ORPHA:578

Mucolipidosis type IV

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

A rare lysosomal storage disease characterized clinically by severe global development delay due to neuronal dysmyelination, hypotonia which gradually progresses to spasticity during childhood, speech deficits, progressive visual impairment (due to corneal clouding, retinal degeneration and optic atrophy), achlorhydria, with increased gastrin secretion and iron deficiency anemia, and kidney disease and failure, all in the absence of dysmorphic features.

1

Names in Orphadata languages

12 of 12 languages
LangNameSynonyms
enMucolipidosis type IV
frMucolipidose type IV
deMukolipidose Typ IV
esMucolipidosis tipo IV
itMucolipidosi tipo IV
nlMucolipidose type IV
ptMucolipidose tipo IV
plMukolipidoza typu IV
csMukolipidóza, typ IV
ukМуколіпідоз, тип IV
zh粘脂贮积症IV型
trMukolipidoz tip IV

Definition in:

2

Cross-references

qualifier = Orphanet mapping relation
SourceCodeQualifierICD relationValidation
OMIM252650Evalidated
ICD-10E75.1NTBTinclusionvalidated
ICD-115C56.0YNTBTindexvalidated
MONDO0009653Evalidated
UMLSC0238286Evalidated
GARD94Evalidated
MedDRA10072930Evalidated

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 (7):

No children.

4

Genes

1 direct
GeneAssociationStatusHGNCEnsemblOMIMLocusNameSource of validation
MCOLN1Disease-causing germline mutation(s) (loss of function) inAssessedHGNC:13356ENSG0000009067460524819p13.2mucolipin TRP cation channel 121763169[PMID]_21224396[PMID]
5

Prevalence and incidence

3 records
TypeClassValueAreaQualificationValidationSource
Point prevalenceUnknown—WorldwideClass onlyValidatedORPHANET
Prevalence at birth1-9 / 1 000 0000.1 / 100 000SwedenValue and classValidated25274184[PMID]
Prevalence at birth1-9 / 100 0002.5 / 100 000Specific populationValue and classValidated20159435[PMID]_16287144[PMID]_16645217[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

27 annotations · validated 2016-06-01
HPOTerm (as annotated by Orphanet)Diagnostic
Very frequent (99-80%)
HP:0004345Abnormality of ganglioside metabolism
HP:0011020Abnormality of mucopolysaccharide metabolism
HP:0001344Absent speech
HP:0010318Aplasia/Hypoplasia of the abdominal wall musculature
HP:0000708Atypical behavior
HP:0007957Corneal opacity
HP:0007281Developmental stagnation
HP:0001288Gait disturbance
HP:0001347Hyperreflexia
HP:0001249Intellectual disability
HP:0000613Photophobia
HP:0000488Retinopathy
HP:0000486Strabismus
Frequent (79-30%)
HP:0001251Ataxia
HP:0002353EEG abnormality
HP:0001252Hypotonia
HP:0000639Nystagmus
Occasional (29-5%)
HP:0000512Abnormal electroretinogram
HP:0005105Abnormal nasal morphology
HP:0007703Abnormality of retinal pigmentation
HP:0004422Biparietal narrowing
HP:0000280Coarse facial features
HP:0000232Everted lower lip vermilion
HP:0002816Genu recurvatum
HP:0000252Microcephaly
HP:0000691Microdontia
HP:0000982Palmoplantar keratoderma

Run the differential on the 12 obligate / very frequent terms

7

Sources for this card