raremaprare-disease reference indexOrphadata 2026-06-23 · HPO 2026-09-01
ORPHA:103909

Trehalase deficiency

Synonyms: Isolated trehalose intolerance

Type
Disease
Group
Disorder
Inheritance
Autosomal dominant
Age of onset
Adolescent, Adult
Status
active

A rare, genetic, intestinal disease characterized by osmotic diarrhea, abdominal pain and increased rectal flatulence after ingestion of trehalose, a disaccharide found mainly in mushrooms, due to intestinal trehalase deficiency. It occurs primarily in the Greenland population, although cases have also been reported elsewhere.

1

Names in Orphadata languages

12 of 12 languages
LangNameSynonyms
enTrehalase deficiencyIsolated trehalose intolerance
frDéficit en tréhalaseIntolérance isolée au tréhalose
deTrehalase-MangelTrehalose-Intoleranz, isolierte
esDeficiencia de trehalasaIntolerancia a la trehalosa aislada · Intolerancia aislada a la trehalosa
itDeficit di trealasiIntolleranza isolata al trealosio
nlTrehalasedeficiëntieGeïsoleerde trehalose-intolerantie
ptDeficiência de trehalase
plBiegunka-wymioty z powodu niedoboru trehalazyIzolowana nietolerancja trehalozy
csPrůjmové zvracení způsobené deficitem trehalázyIzolovaná intolerance trehalózy
ukДефіцит трегалазиІзольована непереносимість трегалози
zh海藻糖酶缺乏症孤立性海藻糖不耐受
trTrehalaz eksikliğiİzole trehaloz intoleransı

Definition in:

2

Cross-references

qualifier = Orphanet mapping relation
SourceCodeQualifierICD relationValidation
OMIM612119Evalidated
ICD-10E74.3NTBTattributedvalidated
ICD-115C61.3Especificvalidated
MONDO0012803Evalidated
MONDO12803Evalidated
MeSHC562603Evalidated
UMLSC0268187Evalidated
GARD10372Evalidated

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 (2):

No children.

4

Genes

1 direct
GeneAssociationStatusHGNCEnsemblOMIMLocusNameSource of validation
TREHDisease-causing germline mutation(s) inNot yet assessedHGNC:12266ENSG0000011809427536011q23.3trehalase
5

Prevalence and incidence

2 records
TypeClassValueAreaQualificationValidationSource
Annual incidence>1 / 10007700 / 100 000GreenlandValue and classValidated[EXPERT]
Point prevalenceUnknown—WorldwideClass onlyNot yet validatedORPHANET

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

6 annotations · validated 2021-11-17
HPOTerm (as annotated by Orphanet)Diagnostic
Very frequent (99-80%)
HP:0012379Abnormal enzyme/coenzyme activity
Occasional (29-5%)
HP:0003270Abdominal distention
HP:0002027Abdominal pain
HP:0002014Diarrhea
HP:0002024Malabsorption
HP:0002013Vomiting

Run the differential on the 1 obligate / very frequent terms

Annotation source: 3227291[PMID]_4737205[PMID]_10522609[PMID]_24443064[PMID]

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Sources for this card