raremaprare-disease reference indexOrphadata 2026-06-23 · HPO 2026-09-01
ORPHA:456312

Infantile multisystem neurologic-endocrine-pancreatic disease

Synonyms: IMNEPD

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

A rare multisystemic syndrome characterized by global developmental delay, postnatal microcephaly, intellectual disability, ataxia, sensorineural hearing loss, and exocrine pancreatic insufficiency. More variable manifestations include hypotonia, growth retardation, peripheral demyelinating neuropathy, dysmorphic facial features, and additional endocrine abnormalities. Brain imaging may show progressive cerebellar atrophy in some patients.

1

Names in Orphadata languages

12 of 12 languages
LangNameSynonyms
enInfantile multisystem neurologic-endocrine-pancreatic diseaseIMNEPD
frMaladie infantile multisystémique neurologique-endocrine-pancréatique= en
deInfantile multisystemische neurologisch-endokrine-pankreatische Krankheit= en
esEnfermedad infantil multisistémica neurológica-endocrina-pancreática= en
itMalattia infantile multisistemica neurologica-endocrina-pancreatica= en
nlInfantiele multisystemische neurologische-endocriene-pancreatische ziekte= en
ptDoença neurológica-endócrina-pancreática multissistémica da infância= en
plNiemowlęca wielonarządowa choroba neurologiczno-endokrynologiczno-trzustkowa= en
csInfantilní multisystémová neurologicko-endokrino-pankreatická choroba= en
ukІнфантильне мультисистемне неврологічно-ендокринно-панкреатичне захворювання= en
zh婴儿多系统累及的神经-内分泌-胰腺疾病= en
trİnfantil multisistem nörolojik-endokrin-pankreas hastalığı= en

Definition in:

2

Cross-references

qualifier = Orphanet mapping relation
SourceCodeQualifierICD relationValidation
OMIM616263Evalidated
ICD-10Q87.8NTBTattributedvalidated
ICD-11LD90.YNTBTattributedvalidated
MONDO8000012Evalidated
UMLSC5779989Evalidated

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):

No children.

4

Genes

1 direct
GeneAssociationStatusHGNCEnsemblOMIMLocusNameSource of validation
PTRH2Disease-causing germline mutation(s) inAssessedHGNC:24265ENSG0000014137860862517q23.1peptidyl-tRNA hydrolase 225574476[PMID]
5

Prevalence and incidence

2 records
TypeClassValueAreaQualificationValidationSource
Cases/families2 casesWorldwideCase(s)Validated25574476[PMID]
Point prevalence<1 / 1 000 000—WorldwideClass onlyValidatedORPHANET_25574476[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 2020-06-16
HPOTerm (as annotated by Orphanet)Diagnostic
Very frequent (99-80%)
HP:0001999Abnormal facial shape
HP:0001251Ataxia
HP:0003693Distal amyotrophy
HP:0001738Exocrine pancreatic insufficiency
HP:0001263Global developmental delay
HP:0002342Intellectual disability, moderate
HP:0001270Motor delay
HP:0000407Sensorineural hearing impairment
Frequent (79-30%)
HP:0001760Abnormal foot morphology
HP:0000309Abnormal midface morphology
HP:0001155Abnormality of the hand
HP:0001771Achilles tendon contracture
HP:0000248Brachycephaly
HP:0100307Cerebellar hemisphere hypoplasia
HP:0000819Diabetes mellitus
HP:0002460Distal muscle weakness
HP:0001310Dysmetria
HP:0002353EEG abnormality
HP:0000577Exotropia
HP:0010628Facial palsy
HP:0001508Failure to thrive
HP:0100807Long fingers
HP:0001530Mild postnatal growth retardation
HP:0001319Neonatal hypotonia
HP:0009623Proximal placement of thumb
HP:0005484Secondary microcephaly
HP:0000219Thin upper lip vermilion
Occasional (29-5%)
HP:0001844Abnormal hallux morphology
HP:0030146Abnormal liver parenchyma morphology
HP:0100800Aplasia/Hypoplasia of the pancreas
HP:0001374Congenital hip dislocation
HP:0001558Decreased fetal movement
HP:0003431Decreased motor nerve conduction velocity
HP:0003448Decreased sensory nerve conduction velocity
HP:0000823Delayed puberty
HP:0008366Foot joint contracture
HP:0002123Generalized myoclonic seizure
HP:0002240Hepatomegaly
HP:0006276Hyperechogenic pancreas
HP:0000316Hypertelorism
HP:0000821Hypothyroidism
HP:0012418Hypoxemia
HP:0009473Joint contracture of the hand
HP:0000049Shawl scrotum
HP:0030951Skeletal muscle fibrosis
HP:0001772Talipes equinovalgus
HP:0009464Ulnar deviation of the 2nd finger
HP:0009463Ulnar deviation of the 3rd finger

Run the differential on the 8 obligate / very frequent terms

Annotation source: 27129381[PMID]_31057140[PMID]

7

Sources for this card