raremaprare-disease reference indexOrphadata 2026-06-23 · HPO 2026-09-01
ORPHA:580

Mucopolysaccharidosis type 2

Synonyms: Hunter syndrome · Iduronate 2-sulfatase deficiency · MPS2 · MPSII · Mucopolysaccharidosis type II

Type
Disease
Group
Disorder
Inheritance
X-linked recessive
Age of onset
Childhood
Status
active

A lysosomal storage disease with multisystemic involvement leading to a massive accumulation of glycosaminoglycans and a wide variety of symptoms including distinctive coarse facial features, short stature, cardio-respiratory involvement and skeletal abnormalities. It manifests as a continuum varying from a severe form with neurodegeneration to an attenuated form without neuronal involvement.

1

Names in Orphadata languages

12 of 12 languages
LangNameSynonyms
enMucopolysaccharidosis type 2Hunter syndrome · Iduronate 2-sulfatase deficiency · MPS2 · MPSII · Mucopolysaccharidosis type II
frMucopolysaccharidose type 2Déficit en iduronate 2-sulfatase · MPS2 · MPSII · Maladie de Hunter · Mucopolysaccharidose type II
deMukopolysaccharidose Typ 2Hunter-Krankheit · Hunter-Syndrom · Iduronat 2-Sulfatase-Mangel · MPS2 · MPSII · Mukopolysaccharidose Typ II
esMucopolisacaridosis tipo 2Deficiencia de iduronato 2-sulfatasa · MPS2 · MPSII · Mucopolisacaridosis tipo II · Síndrome de Hunter
itMucopolisaccaridosi tipo 2MPS2 · MPSII · Mucopolisaccaridosi, tipo II · Sindrome di Hunter
nlMucopolysacharidose type 2Deficiëntie van iduronaat 2-sulfatase · MPS2 · MPSII · Mucopolysacharidose type II · Syndroom van Hunter
ptMucopolissacaridose tipo 2Deficiência de iduronato 2-sulfatase · MPS2 · Síndrome Hunter
plMukopolisacharydoza typu 2MPS2 · MPSII · Mukopolisacharydoza typu II · Niedobór 2-sulfatazy idorunianu · Zespół Huntera
csMukopolysacharidóza, typ 2Deficit iduronát 2-sulfatázy · MPS2 · MPSII · Mukopolysacharidóza, typ II · Hunterův syndrom
ukМукополісахаридоз, тип 2Синдром Хантера · Дефіцит ідуронат-2-сульфатази · MPS2 · MPSII · Мукополісахаридоз II типу
zh粘多糖贮积症2型艾杜糖醛酸2-硫酸酯酶缺乏症
trMukopolisakkaridoz tip 2MPS2 · MPSII · Hunter sendromu · Mukopolisakkaridoz tip II · İduronat 2-sülfataz eksikliği

Definition in:

2

Cross-references

qualifier = Orphanet mapping relation
SourceCodeQualifierICD relationValidation
OMIM309900Evalidated
ICD-10E76.1Especificvalidated
ICD-115C56.31Especificvalidated
MONDO0010674Evalidated
MeSHD016532Evalidated
UMLSC0026705Evalidated
GARD6675Evalidated
MedDRA10056889Evalidated

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):

Children (2):

4

Genes

0 direct · 2 via subtypes

Orphanet records no gene directly on this code.

Recorded by Orphanet on subtypes of this disorder:

GeneSubtypeAssociationStatusHGNCEnsemblOMIMLocusNameSource of validation
IDSORPHA:217085Mucopolysaccharidosis type 2, severe formDisease-causing germline mutation(s) inAssessedHGNC:5389ENSG00000010404300823Xq28iduronate 2-sulfatase
IDSORPHA:217093Mucopolysaccharidosis type 2, attenuated formDisease-causing germline mutation(s) inAssessedHGNC:5389ENSG00000010404300823Xq28iduronate 2-sulfatase
5

Prevalence and incidence

27 records
TypeClassValueAreaQualificationValidationSource
Prevalence at birth1-9 / 100 0001.21 / 100 000ItalyValue and classValidated11953730[PMID]_[EXPERT]
Prevalence at birth1-9 / 1 000 0000.67 / 100 000NetherlandsValue and classValidated10480370[PMID]_[EXPERT]
Point prevalence1-9 / 100 0006.5 / 100 000SwedenValue and classValidated18681890[PMID]_[EXPERT]
Prevalence at birth1-9 / 1 000 0000.13 / 100 000NorwayValue and classValidated18681890[PMID]_[EXPERT]
Point prevalence1-9 / 100 0004.4 / 100 000NorwayValue and classValidated18681890[PMID]_[EXPERT]
Prevalence at birth1-9 / 1 000 0000.27 / 100 000DenmarkValue and classValidated18681890[PMID]_[EXPERT]
Prevalence at birth1-9 / 100 0001.09 / 100 000PortugalValue and classValidated14685153[PMID]_[EXPERT]
Prevalence at birth1-9 / 1 000 0000.64 / 100 000GermanyValue and classValidated16435194[PMID]_[EXPERT]
Prevalence at birth1-9 / 1 000 0000.7 / 100 000EuropeValue and classValidatedORPHANET
Prevalence at birth1-9 / 1 000 0000.31 / 100 000SwedenValue and classValidated18681890[PMID]_25274184[PMID]
Point prevalence1-9 / 100 0009.1 / 100 000DenmarkValue and classValidated18681890[PMID]_[EXPERT]
Prevalence at birth1-9 / 1 000 0000.43 / 100 000Czech RepublicValue and classValidated20490927[PMID]_[EXPERT]
Prevalence at birth1-9 / 1 000 0000.71 / 100 000IrelandValue and classValidated9439667[PMID]_[EXPERT]
Prevalence at birth1-9 / 100 0001.07 / 100 000Taiwan, Province of ChinaValue and classValidated19396827[PMID]_[EXPERT]
Prevalence at birth1-9 / 1 000 0000.74 / 100 000AustraliaValue and classValidated9918480[PMID]_[EXPERT]
Prevalence at birth1-9 / 100 0002.16 / 100 000EstoniaValue and classValidated22480138[PMID]_[EXPERT]
Prevalence at birth1-9 / 1 000 0000.1 / 100 000CanadaValue and classValidated10617747[PMID]_[EXPERT]
Point prevalence1-9 / 1 000 0000.2 / 100 000EuropeValue and classValidatedEuropean Medicines Agency 2018 [OTHER]
Prevalence at birth1-9 / 1 000 0000.68 / 100 000WorldwideValue and classValidatedORPHANET
Prevalence at birth1-9 / 1 000 0000.46 / 100 000PolandValue and classValidated25472774[PMID]
Prevalence at birth1-9 / 1 000 0000.46 / 100 000SwitzerlandValue and classValidated28595941[PMID]
Prevalence at birth1-9 / 1 000 0000.74 / 100 000Korea, Republic ofValue and classValidated25364648[PMID]
Prevalence at birth1-9 / 1 000 0000.29 / 100 000TunisiaValue and classValidated20209839[PMID]
Prevalence at birth1-9 / 1 000 0000.26 / 100 000United StatesValue and classValidated34051828[PMID]
Prevalence at birth1-9 / 1 000 0000.37 / 100 000BrazilValue and classValidated31926052[PMID]
Prevalence at birth1-9 / 1 000 0000.84 / 100 000JapanValue and classValidated28595941[PMID]
Point prevalence<1 / 1 000 0000.07 / 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

74 annotations · validated 2020-01-27
HPOTerm (as annotated by Orphanet)Diagnostic
Very frequent (99-80%)
HP:0001627Abnormal heart morphology
HP:0000280Coarse facial features
HP:0001376Limitation of joint mobility
HP:0000256Macrocephaly
HP:0004322Short stature
Frequent (79-30%)
HP:0001654Abnormal heart valve morphology
HP:0000708Atypical behavior
HP:0002028Chronic diarrhea
HP:0100543Cognitive impairment
HP:0000405Conductive hearing impairment
HP:0005781Contractures of the large joints
HP:0000762Decreased nerve conduction velocity
HP:0008301Dermatan sulfate excretion in urine
HP:0002376Developmental regression
HP:0000943Dysostosis multiplex
HP:0030812Enlarged tonsils
HP:0030044Flexion contracture of digit
HP:0000293Full cheeks
HP:0000212Gingival overgrowth
HP:0001510Growth delay
HP:0002159Heparan sulfate excretion in urine
HP:0002240Hepatomegaly
HP:0001609Hoarse voice
HP:0000023Inguinal hernia
HP:0004582Irregularity of vertebral bodies
HP:0000158Macroglossia
HP:0001268Mental deterioration
HP:0011369Mongolian blue spot
HP:0007994Peripheral visual field loss
HP:0002344Progressive neurologic deterioration
HP:0410018Recurrent ear infections
HP:0002788Recurrent upper respiratory tract infections
HP:0000546Retinal degeneration
HP:0000488Retinopathy
HP:0000407Sensorineural hearing impairment
HP:0002360Sleep abnormality
HP:0010535Sleep apnea
HP:0006979Sleep-wake cycle disturbance
HP:0001744Splenomegaly
HP:0012471Thick vermilion border
HP:0001537Umbilical hernia
Occasional (29-5%)
HP:0001679Abnormal aortic morphology
HP:0010656Abnormal epiphyseal ossification
HP:0030466Abnormal full-field electroretinogram
HP:0001633Abnormal mitral valve morphology
HP:0031416Abnormal nasal mucus secretion
HP:0001641Abnormal pulmonary valve morphology
HP:0001702Abnormal tricuspid valve morphology
HP:0007703Abnormality of retinal pigmentation
HP:0001638Cardiomyopathy
HP:0001334Communicating hydrocephalus
HP:0012185Constrictive median neuropathy
HP:0007957Corneal opacity
HP:0001263Global developmental delay
HP:0001385Hip dysplasia
HP:0008843Hip osteoarthritis
HP:0000752Hyperactivity
HP:0003552Muscle stiffness
HP:0000648Optic atrophy
HP:0000362Otosclerosis
HP:0001085Papilledema
HP:0000336Prominent supraorbital ridges
HP:0002176Spinal cord compression
HP:0012478Temporomandibular joint ankylosis
HP:0002781Upper airway obstruction
HP:0000431Wide nasal bridge
HP:0000445Wide nose
Very rare (<4-1%)
HP:0025160Abnormal temper tantrums
HP:0000718Aggressive behavior
HP:0011675Arrhythmia
HP:0000822Hypertension
HP:0100710Impulsivity
HP:0001129Large central visual field defect
HP:0001250Seizure

Run the differential on the 5 obligate / very frequent terms

Annotation source: 20301451[PMID]_31890590[PMID]_12828746[PMID]

7

Sources for this card