raremaprare-disease reference indexOrphadata 2026-06-23 · HPO 2026-09-01
ORPHA:330050

DNM1L-related encephalopathy due to mitochondrial and peroxisomal fission defect

Type
Etiological subtype
Group
Subtype of disorder
Inheritance
Autosomal dominant
Age of onset
Childhood, Infancy, Neonatal
Status
active

This disease is described under Encephalopathy due to mitochondrial and peroxisomal fission defect

1

Names in Orphadata languages

12 of 12 languages
LangNameSynonyms
enDNM1L-related encephalopathy due to mitochondrial and peroxisomal fission defect
frEncéphalopathie par défaut de fission mitochondriale et peroxysomale associée à DNM1LEncéphalopathie par défaut de fission des mitochondries et peroxysomes associée à DNM1L
deEnzephalopathie durch mitochondrialen und peroxisomalen Teilungsdefekt, DNM1L-assoziiert
esEncefatalopatía por un defecto en la fisión mitocondrial y peroxisomal asociada a DNM1L
itEncefalopatia letale da difetto della fissione dei mitocondri e dei perossisomi
nlDNM1L-gerelateerde encefalopathie door defect van mitochondriale en peroxisomale deling
ptEncefalopatia DNM1L-relacionada devida a defeitos de fissão mitocondrial e peroxissomal
plŚmiertelna encefalopatia spowodowana wadą rozszczepiania mitochondrialnego i peroksysomalnego
csLetální encefalopatie způsobená mitochondriální a peroxisomální poruchou štěpení
ukЕнцефалопатія, повязана з DNM1L, зумовлена дефектом мітохондріального та пероксисомного поділу
zh线粒体和过氧化物酶体裂变缺陷所致DNM1L相关脑病
trMitokondriyal ve peroksizomal fisyon defektine bağlı DNM1L -ilişkili ensefalopati
2

Cross-references

qualifier = Orphanet mapping relation
SourceCodeQualifierICD relationValidation
OMIM614388Evalidated
ICD-10E88.8NTBTattributedvalidated
ICD-115C5YNTBTattributedvalidated
ICD-11LD2ENTBTattributedvalidated
MONDO0013726Evalidated
UMLSC3280660Evalidated

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 (1):

No children.

4

Genes

1 direct
GeneAssociationStatusHGNCEnsemblOMIMLocusNameSource of validation
DNM1LDisease-causing germline mutation(s) (gain of function) inAssessedHGNC:2973ENSG0000008747060385012p11.21dynamin 1 like17460227[PMID]
5

Prevalence and incidence

2 records
TypeClassValueAreaQualificationValidationSource
Cases/families11 casesWorldwideCase(s)Validated17460227[PMID]_26825290[PMID]_26992161[PMID]_26604000[PMID]_27145208[PMID]_30109270[PMID]_27328748[PMID]
Point prevalence<1 / 1 000 000—WorldwideClass onlyValidatedORPHANET_17460227[PMID]_26825290[PMID]_26992161[PMID]_26604000[PMID]_27145208[PMID]_30109270[PMID]_27328748[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

30 annotations · validated 2020-03-05
HPOTerm (as annotated by Orphanet)Diagnostic
Very frequent (99-80%)
HP:0012103Abnormality of the mitochondrion
Frequent (79-30%)
HP:0001344Absent speech
HP:0410263Brain imaging abnormality
HP:0002376Developmental regression
HP:0012707Elevated brain lactate level by MRS
HP:0001263Global developmental delay
HP:0002540Inability to walk
HP:0002151Increased circulating lactate concentration
HP:0000639Nystagmus
HP:0000648Optic atrophy
HP:0001250Seizure
HP:0002133Status epilepticus
Occasional (29-5%)
HP:0002381Aphasia
HP:0001488Bilateral ptosis
HP:0002069Bilateral tonic-clonic seizure
HP:0001272Cerebellar atrophy
HP:0012569Delayed menarche
HP:0002506Diffuse cerebral atrophy
HP:0001332Dystonia
HP:0002384Focal impaired awareness seizure
HP:0007359Focal-onset seizure
HP:0001288Gait disturbance
HP:0011471Gastrostomy tube feeding in infancy
HP:0002123Generalized myoclonic seizure
HP:0006801Hyperactive deep tendon reflexes
HP:0010553Oculogyric crisis
HP:0002650Scoliosis
HP:0003202Skeletal muscle atrophy
HP:0000486Strabismus
HP:0001337Tremor

Run the differential on the 1 obligate / very frequent terms

Annotation source: 30850373[PMID]_26604000[PMID]_27145208[PMID]

7

Sources for this card