raremaprare-disease reference indexOrphadata 2026-06-23 · HPO 2026-09-01
ORPHA:79271

Sanfilippo syndrome type C

Synonyms: HGSNAT deficiency · Heparan-alpha-glucosaminide N-acetyltransferase deficiency · MPS3C · MPSIIIC · Mucopolysaccharidosis type 3C · Mucopolysaccharidosis type IIIC

Type
Etiological subtype
Group
Subtype of disorder
Inheritance
Autosomal recessive
Age of onset
Childhood
Status
active

This disease is described under Mucopolysaccharidosis type 3

1

Names in Orphadata languages

12 of 12 languages
LangNameSynonyms
enSanfilippo syndrome type CHGSNAT deficiency · Heparan-alpha-glucosaminide N-acetyltransferase deficiency · MPS3C · MPSIIIC · Mucopolysaccharidosis type 3C · Mucopolysaccharidosis type IIIC
frMaladie de Sanfilippo type CMPSIIIC · Mucopolysaccharidose type 3C · Mucopolysaccharidose type IIIC · Déficit en HGSNAT · Déficit en héparane-alpha-glucosaminide N-acétyltransférase · MPS3C
deSanfilippo-Krankheit Typ CHGSNAT-Mangel · Heparan-Alpha-Glucosaminid N-Acetyltransferase-Mangel · MPS3C · MPSIIIC · Mukopolysaccharidose Typ 3C · Mukopolysaccharidose Typ IIIC
esSíndrome de Sanfilippo tipo CDeficiencia de HGSNAT · Deficiencia de heparán-alfa-glucosaminida N-acetiltransferasa · MPS3C · MPSIIIC · Mucopolisacaridosis tipo 3C · Mucopolisacaridosis tipo IIIC
itSindrome di Sanfilippo, tipo CDeficit di HGSNAT · Deficit di eparan-alfa-glucosaminide N-acetiltransferasi · MPS3C · MPSIIIC · Mucopolisaccaridosi, tipo 3C · Mucopolisaccaridosi, tipo IIIC
nlSyndroom van Sanfilippo type CHGSNAT-deficiëntie · Heparaan-alfa-glucosaminide-N-acetyltransferasedeficiëntie · MPS3C · MPSIIIC · Mucopolysacharidose type 3C · Mucopolysacharidose type IIIC
ptSíndrome Sanfilippo tipo C (Mucopolissacaridose tipo 3C)
plZespół Sanfilippo typu CMPS3C · MPSIIIC · Mukopolisacharydoza typu 3C · Mukopolisacharydoza typu IIIC · Niedobór heparan-alfa-glukozaminido N-acetylotransferazy · Niedobór HGSNAT
csSanfilippův syndrom, typ CDeficit HGSNAT · Deficit heparan-alfa-glukosaminid-N-acetyltransferázy · MPS3C · MPSIIIC · Mukopolysacharidóza, typ 3C · Mukopolysacharidóza, typ IIIC
ukСиндром Санфіліппо, тип СДефіцит гепаран-альфа-глюкозамінід N-ацетилтрансферази · Дефіцит HGSNAT · MPS3C · MPSIIIC · Мукополісахаридоз типу 3С · Мукополісахаридоз типу IIIC
zhSanfilippo综合征C型乙酰肝素α-氨基葡萄糖苷N-乙酰基转移酶缺乏症
trSanfilippo sendromu tip CMPS3C · MPSIIIC · HGSNAT eksikliği · Mukopolisakkaridoz tip 3C · Mukopolisakkaridoz tip IIIC · Heparan-alfa-glukozaminid N-asetiltransferaz eksikliği
2

Cross-references

qualifier = Orphanet mapping relation
SourceCodeQualifierICD relationValidation
OMIM252930Evalidated
ICD-10E76.2NTBTattributedvalidated
ICD-115C56.3YNTBTindexvalidated
MONDO0009657Evalidated
UMLSC0086649Evalidated
GARD7073Evalidated

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
HGSNATDisease-causing germline mutation(s) (loss of function) inAssessedHGNC:26527ENSG000001651026104538p11.21-p11.1heparan-alpha-glucosaminide N-acetyltransferase17033958[PMID]
5

Prevalence and incidence

8 records
TypeClassValueAreaQualificationValidationSource
Prevalence at birth1-9 / 1 000 0000.21 / 100 000NetherlandsValue and classValidated10480370[PMID]
Prevalence at birth1-9 / 1 000 0000.12 / 100 000PortugalValue and classValidated14685153[PMID]
Prevalence at birth<1 / 1 000 0000.07 / 100 000AustraliaValue and classValidated9918480[PMID]
Prevalence at birth1-9 / 1 000 0000.42 / 100 000Czech RepublicValue and classValidated20490927[PMID]
Prevalence at birth1-9 / 1 000 0000.34 / 100 000SwedenValue and classValidated25274184[PMID]
Point prevalence1-9 / 100 0005 / 100 000EuropeValue and classValidatedEuropean Medicines Agency 2015[OTHER]
Point prevalence<1 / 1 000 0000.0004 / 100 000United StatesValue and classValidated34051828[PMID]
Prevalence at birth<1 / 1 000 0000.015 / 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