raremaprare-disease reference indexOrphadata 2026-06-23 · HPO 2026-09-01
ORPHA:727820

Brainstem disconnection syndrome

Type
Disease
Group
Disorder
Inheritance
Unknown
Age of onset
Antenatal, Neonatal
Status
active

A rare syndrome with a brainstem malformation as a major feature characterized by the complete absence, or the complete or functional disconnection of the brainstem segments (midbrain, pons and medulla). Patients present with hypotonia, absence of eye contact, signs of impaired thermoregulation, paralysis of some cranial nerves and variable brain anomalies, mostly global cerebellar hypoplasia. Some patients manifest extracerebral anomalies like facial dysmorphism and heart defects. The prognosis is very poor and in case of survival, the patients suffer from severe disability.

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Names in Orphadata languages

9 of 12 languages
LangNameSynonyms
enBrainstem disconnection syndrome
frSyndrome de déconnexion du tronc cérébral
deHirnstamm-Diskonnektionssyndrom
esSíndrome de desconexión del tronco encefálico
itSindrome da disconnessione del tronco encefalico
nlHersenstam-disconnectiesyndroom
ptBrainstem disconnection syndrome
plBrainstem disconnection syndrome
csBrainstem disconnection syndrome
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Cross-references

qualifier = Orphanet mapping relation

No cross-references in this release.

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Classification

Preferential parent (Orphanet linearisation):

Parents in the classifications (2):

No children.

4

Genes

0 direct

Orphanet records no gene directly on this code.

5

Prevalence and incidence

2 records
TypeClassValueAreaQualificationValidationSource
Cases/families15 casesWorldwideCase(s)ValidatedORPHANET
Point prevalence<1 / 1 000 000—WorldwideClass onlyValidatedORPHANET

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

Orphanet has no HPO annotation for this code in this release.

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Sources for this card