raremaprare-disease reference indexOrphadata 2026-06-23 · HPO 2026-09-01
ORPHA:309310

Mucopolysaccharidosis type 4B

Synonyms: Beta-D-galactosidase deficiency · MPS4B · MPSIVB · Morquio disease type B · Mucopolysaccharidosis type IVB

Type
Clinical subtype
Group
Subtype of disorder
Inheritance
Autosomal recessive
Status
active

This disease is described under Mucopolysaccharidosis type 4

1

Names in Orphadata languages

12 of 12 languages
LangNameSynonyms
enMucopolysaccharidosis type 4BBeta-D-galactosidase deficiency · MPS4B · MPSIVB · Morquio disease type B · Mucopolysaccharidosis type IVB
frMucopolysaccharidose type 4BDéficit en bêta-D-galactosidase · MPS4B · MPSIVB · Maladie de Morquio type B · Mucopolysaccharidose type IVB
deMukopolysaccharidose Typ 4BBeta-D-Galactosidase-Mangel · MPS4B · MPSIVB · Morquio-Krankheit Typ B · Mukopolysaccharidose Typ IVB
esMucopolisacaridosis tipo 4BDeficiencia de beta-D-galactosidasa · Enfermedad de Morquio tipo B · MPS4B · MPSIVB · Mucopolisacaridosis tipo IVB
itMucopolisaccaridosi, tipo 4BDeficit di beta-D-galattosidasi · MPS4B · MPSIVB · Malattia di Morquio, tipo B · Mucopolisaccaridosi, tipo IVB
nlMucopolysacharidose type 4BDeficiëntie van bèta-D-galactosidase · MPS4B · MPSIVB · Mucopolysacharidose type IVB · Ziekte van Morquio type B
ptMucopolissacaridose tipo 4B
plMukopolisacharydoza typu 4BChoroba Morquio typu B · MPS4B · MPSIVB · Mukopolisacharydoza typu IVB · Niedobór beta-D-galaktozydazy
csMukopolysacharidóza, typ 4BDeficit beta-D-galaktosidázy · MPS4B · MPSIVB · Morquiova nemoc, typ B · Mukopolysacharidóza, typ IVB
ukМукополісахаридоз, тип 4BДефіцит бета-D-галактозидази · Хвороба Моркіо, тип B · MPS4B · MPSIVB · Мукополісахаридоз типу IVB
zh黏多糖贮积症4B型β-D-半乳糖苷酶缺乏
trMukopolisakkaridoz tip 4BMPS4B · MPSIVB · Morquio hastalığı tip B · Mukopolisakkaridoz tip IVB · Beta-D-galaktosidaz eksikliği
2

Cross-references

qualifier = Orphanet mapping relation
SourceCodeQualifierICD relationValidation
OMIM253010Evalidated
ICD-10E76.2NTBTattributedvalidated
ICD-115C56.32NTBTindexvalidated
MONDO0009660Evalidated
UMLSC0086652Evalidated
GARD3786Evalidated

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 (1):

  • ORPHA:582Mucopolysaccharidosis type 4
    rare developmental anomalies during embryogenesis; rare inborn errors of metabolism; rare genetic diseases; rare ophthalmic disorders; rare bone diseases; rare transplant-related disorders

No children.

4

Genes

1 direct
GeneAssociationStatusHGNCEnsemblOMIMLocusNameSource of validation
GLB1Disease-causing germline mutation(s) inAssessedHGNC:4298ENSG000001702666114583p22.3galactosidase beta 124156116[PMID]
5

Prevalence and incidence

2 records
TypeClassValueAreaQualificationValidationSource
Point prevalence<1 / 1 000 0000.001 / 100 000United StatesValue and classValidated34051828[PMID]
Prevalence at birth<1 / 1 000 0000.004 / 100 000United StatesValue and classValidated34051828[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

Orphanet has no HPO annotation for this code in this release.

7

Sources for this card