raremaprare-disease reference indexOrphadata 2026-06-23 · HPO 2026-09-01
ORPHA:298

Mitochondrial neurogastrointestinal encephalomyopathy

Synonyms: MNGIE

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

Mitochondrial NeuroGastroIntestinal Encephalomyopathy (MNGIE) syndrome is characterized by the association of gastrointestinal dysmotility, peripheral neuropathy, chronic progressive external ophthalmoplegia and leukoencephalopathy.

1

Names in Orphadata languages

12 of 12 languages
LangNameSynonyms
enMitochondrial neurogastrointestinal encephalomyopathyMNGIE
frEncéphalopathie myo-neuro-gastrointestinaleEncéphalomyopathie mitochondriale neuro-gastro-intestinale · MNGIE
deEnzephalomyopathie, mitochondriale neurogastrointestinaleMNGIE-Syndrom
esEncefalomiopatía neurogastrointestinal mitocondrial= en
itEncefalomiopatia neurogastrointestinale mitocondriale= en
nlMitochondriale neurogastro-intestinale encefalomyopathie= en
ptEncefalomiopatia neurogastrointestinal mitocondrial= en
plZespół mitochondrialnej encefalomiopatii dotyczącej układu nerwowego, żołądka i jelit= en
csMitochondriální neurogastrointestinální encefalomyopatie= en
ukМітохондріальна нейрогастроінтестинальна енцефаломіопатія= en
zh线粒体神经胃肠型脑肌病= en
trMitokondriyal nörogastrointestinal ensefalomiyopati= en

Definition in:

2

Cross-references

qualifier = Orphanet mapping relation
SourceCodeQualifierICD relationValidation
OMIM603041NTBTvalidated
OMIM612075NTBTvalidated
OMIM613662NTBTvalidated
OMIM619780BTNTvalidated
ICD-10G71.3NTBTattributedvalidated
ICD-115C53.20NTBTindexvalidated
MONDO0017575Evalidated
UMLSC0872218Evalidated
GARD9920Evalidated
MedDRA10065271Evalidated

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 (12):

No children.

4

Genes

4 direct
GeneAssociationStatusHGNCEnsemblOMIMLocusNameSource of validation
TYMPDisease-causing germline mutation(s) (loss of function) inAssessedHGNC:3148ENSG0000002570813122222q13.33thymidine phosphorylase21933806[PMID]
LIG3Disease-causing germline mutation(s) inAssessedHGNC:6600ENSG0000000515660094017q12DNA ligase 333855352[PMID]
POLGDisease-causing germline mutation(s) inAssessedHGNC:9179ENSG0000014052117476315q26.1DNA polymerase gamma, catalytic subunit12825077[PMID]
RRM2BDisease-causing germline mutation(s) inAssessedHGNC:17296ENSG000000483926047128q22.3ribonucleotide reductase regulatory TP53 inducible subunit M2B19667227[PMID]
5

Prevalence and incidence

3 records
TypeClassValueAreaQualificationValidationSource
Point prevalence1-9 / 1 000 0000.1 / 100 000EuropeValue and classValidatedEuropean Medicines Agency[OTHER]
Prevalence at birth1-9 / 1 000 0000.3 / 100 000IsraelValue and classValidated33239050[PMID]
Prevalence at birth1-9 / 1 000 0000.5 / 100 000Specific populationValue and classValidated33239050[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

48 annotations · validated 2017-12-04
HPOTerm (as annotated by Orphanet)Diagnostic
Very frequent (99-80%)
HP:0003270Abdominal distention
HP:0002027Abdominal pain
HP:0025149Atrophic muscularis propria
HP:0004326Cachexia
HP:0002015Dysphagia
HP:0000544External ophthalmoplegia
HP:0002020Gastroesophageal reflux
HP:0002579Gastrointestinal dysmotility
HP:0002352Leukoencephalopathy
HP:0002018Nausea
HP:0004396Poor appetite
HP:0007141Sensorimotor neuropathy
HP:0012850Small intestinal dysmotility
HP:0002013Vomiting
Frequent (79-30%)
HP:0002500Abnormal cerebral white matter morphology
HP:0008049Abnormality of the extraocular muscles
HP:0011024Abnormality of the gastrointestinal tract
HP:0001155Abnormality of the hand
HP:0012103Abnormality of the mitochondrion
HP:0003431Decreased motor nerve conduction velocity
HP:0003387Decreased number of large peripheral myelinated nerve fibers
HP:0003448Decreased sensory nerve conduction velocity
HP:0007108Demyelinating peripheral neuropathy
HP:0002014Diarrhea
HP:0002460Distal muscle weakness
HP:0003388Easy fatigability
HP:0002910Elevated circulating hepatic transaminase concentration
HP:0009027Foot dorsiflexor weakness
HP:0003348Hyperalaninemia
HP:0002922Increased CSF protein concentration
HP:0003128Lactic acidosis
HP:0000597Ophthalmoparesis
HP:0003401Paresthesia
HP:0003477Peripheral axonal neuropathy
HP:0009830Peripheral neuropathy
HP:0000508Ptosis
HP:0003200Ragged-red muscle fibers
HP:0000407Sensorineural hearing impairment
HP:0001824Weight loss
Occasional (29-5%)
HP:0025461Abnormal cell morphology
HP:0001903Anemia
HP:0001394Cirrhosis
HP:0003199Decreased muscle mass
HP:0000815Hypergonadotropic hypogonadism
HP:0000044Hypogonadotropic hypogonadism
HP:0001249Intellectual disability
HP:0001403Macrovesicular hepatic steatosis
Very rare (<4-1%)
HP:0000726Dementia

Run the differential on the 12 obligate / very frequent terms

Annotation source: 20301358[PMID]_17437622[PMID]_22908072[PMID]_22908072[PMID]

7

Sources for this card