raremaprare-disease reference indexOrphadata 2026-06-23 · HPO 2026-09-01
ORPHA:2836

PEHO syndrome

Synonyms: Progressive encephalopathy with edema, hypsarrhythmia and optic atrophy

Type
Disease
Group
Disorder
Inheritance
Autosomal dominant, Autosomal recessive
Age of onset
Infancy, Neonatal
Status
active

A rare early childhood onset progressive encephalopathy characterized by extreme cerebellar atrophy, infantile-onset hypotonia, infantile spasms with hypsarrhythmia, profound intellectual disability, and optic atrophy. PEHO stands for the main features of the syndrome: Progressive encephalopathy with Edema, Hypsarrhythmia and Optic atrophy.

1

Names in Orphadata languages

12 of 12 languages
LangNameSynonyms
enPEHO syndromeProgressive encephalopathy with edema, hypsarrhythmia and optic atrophy
frSyndrome PEHOSyndrome d'encéphalopathie progressive-oedème-hypsarythmie-atrophie optique
dePEHO-SyndromProgressive Enzephalopathie mit Ödemen, Hypsarrhythmie und Optikusatrophie
esSíndrome PEHOEncefalopatía progresiva con edema, hipsarritmia y atrofia óptica
itSindrome PEHOEncefalopatia progressiva - atrofia ottica · Encefalopatia progressiva con edema, ipsaritmia e atrofia ottica
nlPEHO-syndroomProgressieve encefalopathie met oedeem, hypsaritmie en opticusatrofie
ptSíndrome PEHOSíndrome de encefalopatia progressiva com edema, hipsarritmia e atrofia óptica
plZespół PEHOEncefalopatia postępująca - atrofia nerwu wzrokowego · Encefalopatia postępująca z obrzękiem, hipsarytmią i atrofią nerwu wzrokowego
csPEHO syndromProgresivní encefalopatie s edémem, hypsarytmií a atrofií optického nervu · Syndrom zahrnující progresivní encefalopatii a atrofii optického nervu
ukСиндром PEHOПрогресуюча енцефалопатія з набряками, гіподинамією та атрофією зорового нерва
zhPEHO综合征进行性脑病伴水肿、心律失常和视神经萎缩
trPEHO sendromuilerleyici ensefalopati-optik atrofi sendromu · Ödem, hipsaritmi ve optik atrofi ile seyreden ilerleyici ensefalopati

Definition in:

2

Cross-references

qualifier = Orphanet mapping relation
SourceCodeQualifierICD relationValidation
OMIM260565Evalidated
ICD-10G31.8NTBTattributedvalidated
ICD-11LD90.YNTBTindexvalidated
MONDO0009841Evalidated
MeSHC536317Evalidated
UMLSC1850055Evalidated
GARD4264Evalidated
MedDRA10086607Evalidated

E exact · NTBT this ORPHAcode is narrower than the target · BTNT broader than the target · ND not decided.

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Classification

Preferential parent (Orphanet linearisation):

Parents in the classifications (5):

No children.

4

Genes

1 direct
GeneAssociationStatusHGNCEnsemblOMIMLocusNameSource of validation
ZNHIT3Disease-causing germline mutation(s) (loss of function) inAssessedHGNC:12309ENSG0000027361160450017q12zinc finger HIT-type containing 328335020[PMID]
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Prevalence and incidence

1 record
TypeClassValueAreaQualificationValidationSource
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.

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HPO phenotypes

42 annotations · validated 2016-06-01
HPOTerm (as annotated by Orphanet)Diagnostic
Very frequent (99-80%)
HP:0000174Abnormal palate morphology
HP:0000377Abnormal pinna morphology
HP:0000496Abnormality of eye movement
HP:0100022Abnormality of movement
HP:0000177Abnormality of upper lip
HP:0004422Biparietal narrowing
HP:0002120Cerebral cortical atrophy
HP:0002329Drowsiness
HP:0002353EEG abnormality
HP:0000286Epicanthus
HP:0011968Feeding difficulties
HP:0000293Full cheeks
HP:0001263Global developmental delay
HP:0001347Hyperreflexia
HP:0002521Hypsarrhythmia
HP:0012469Infantile spasms
HP:0010864Intellectual disability, severe
HP:0000400Macrotia
HP:0000272Malar flattening
HP:0011800Midface retrusion
HP:0000194Open mouth
HP:0000648Optic atrophy
HP:0001250Seizure
HP:0006829Severe muscular hypotonia
HP:0003196Short nose
HP:0001182Tapered finger
HP:0000572Visual loss
Frequent (79-30%)
HP:0000463Anteverted nares
HP:0007366Atrophy/Degeneration affecting the brainstem
HP:0001272Cerebellar atrophy
HP:0001371Flexion contracture
HP:0000212Gingival overgrowth
HP:0000238Hydrocephalus
HP:0001376Limitation of joint mobility
HP:0000252Microcephaly
HP:0100540Palpebral edema
HP:0010741Pedal edema
HP:0012398Peripheral edema
HP:0002132Porencephaly
HP:0002205Recurrent respiratory infections
HP:0002119Ventriculomegaly
Occasional (29-5%)
HP:0002804Arthrogryposis multiplex congenita

Run the differential on the 12 obligate / very frequent terms

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Sources for this card