raremaprare-disease reference indexOrphadata 2026-06-23 · HPO 2026-09-01
ORPHA:79270

Sanfilippo syndrome type B

Synonyms: MPS3B · MPSIIIB · Mucopolysaccharidosis type 3B · Mucopolysaccharidosis type IIIB · N-acetyl-alpha-glucosaminidase deficiency

Type
Etiological subtype
Group
Subtype of disorder
Inheritance
Autosomal recessive
Age of onset
Infancy, Neonatal
Status
active

This disease is described under Mucopolysaccharidosis type 3

1

Names in Orphadata languages

12 of 12 languages
LangNameSynonyms
enSanfilippo syndrome type BMPS3B · MPSIIIB · Mucopolysaccharidosis type 3B · Mucopolysaccharidosis type IIIB · N-acetyl-alpha-glucosaminidase deficiency
frMaladie de Sanfilippo type BDéficit en N-acétyl-alpha-glucosaminidase · MPS3B · MPSIIIB · Mucopolysaccharidose type 3B · Mucopolysaccharidose type IIIB
deSanfilippo-Krankheit Typ BMPS3B · MPSIIIB · Mukopolysaccharidose Typ 3B · Mukopolysaccharidose Typ IIIB · N-Acetyl-Alpha-Glucosaminidase-Mangel
esSíndrome de Sanfilippo tipo BDeficiencia de N-acetil-alfa-glucosaminidasa · MPS3B · MPSIIIB · Mucopolisacaridosis tipo 3B · Mucopolisacaridosis tipo IIIB
itSindrome di Sanfilippo, tipo BDeficit di N-acetil-alfa-glucosaminidasi · MPS3B · MPSIIIB · Mucopolisaccaridosi, tipo 3B · Mucopolisaccaridosi, tipo IIIB
nlSyndroom van Sanfilippo type BMPS3B · MPSIIIB · Mucopolysacharidose type 3B · Mucopolysacharidose type IIIB · N-acetyl-alfa-glucosaminidasedeficiëntie
ptSíndrome Sanfilippo tipo B (Mucopolissacaridose tipo 3B)
plZespół Sanfilippo typu BMPS3B · MPSIIIB · Mukopolisacharydoza typu 3B · Mukopolisacharydoza typu IIIB · Niedobór N-acetylo-alfa-glukozoaminidazy
csSanfilippův syndrom, typ BMPS3B · MPSIIIB · Mukopolysacharidóza, typ 3B · Mukopolysacharidóza, typ IIIB · Deficit N-acetyl-alfa-glukosaminidázy
ukСиндром Санфіліппо, тип ВMPS3B · MPSIIIB · Мукополісахаридоз типу 3B · Мукополісахаридоз типу IIIB · Дефіцит N-ацетил-альфа-глюкозамінідази
zhSanfilippo综合征B型N-乙酰-α-氨基葡萄糖苷酶缺乏症
trSanfilippo sendromu tip BMPS3B · MPSIIIB · Mukopolisakkaridoz tip 3B · Mukopolisakkaridoz tip IIIB · N-asetil-alfa-glukozaminidaz eksikliği
2

Cross-references

qualifier = Orphanet mapping relation
SourceCodeQualifierICD relationValidation
OMIM252920Evalidated
ICD-10E76.2NTBTattributedvalidated
ICD-115C56.3YNTBTindexvalidated
MONDO0009656Evalidated
UMLSC0086648Evalidated
GARD7072Evalidated

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:581Mucopolysaccharidosis type 3
    rare developmental anomalies during embryogenesis; rare inborn errors of metabolism; rare genetic diseases; rare neurological diseases; rare ophthalmic disorders; rare bone diseases; rare transplant-related disorders

No children.

4

Genes

1 direct
GeneAssociationStatusHGNCEnsemblOMIMLocusNameSource of validation
NAGLUDisease-causing germline mutation(s) (loss of function) inAssessedHGNC:7632ENSG0000010878460970117q21.2N-acetyl-alpha-glucosaminidase16151907[PMID]
5

Prevalence and incidence

8 records
TypeClassValueAreaQualificationValidationSource
Point prevalence1-9 / 1 000 0000.2 / 100 000EuropeValue and classValidatedEuropean Medicines Agency 2013[OTHER]
Prevalence at birth1-9 / 1 000 0000.42 / 100 000NetherlandsValue and classValidated10480370[PMID]
Prevalence at birth1-9 / 1 000 0000.72 / 100 000PortugalValue and classValidated14685153[PMID]
Prevalence at birth1-9 / 1 000 0000.47 / 100 000AustraliaValue and classValidated9918480[PMID]
Prevalence at birth<1 / 1 000 0000.02 / 100 000Czech RepublicValue and classValidated20490927[PMID]
Prevalence at birth<1 / 1 000 0000.05 / 100 000SwedenValue and classValidated25274184[PMID]
Point prevalence<1 / 1 000 0000.014 / 100 000United StatesValue and classValidated34051828[PMID]
Prevalence at birth<1 / 1 000 0000.05 / 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