raremaprare-disease reference indexOrphadata 2026-06-23 · HPO 2026-09-01
ORPHA:280195

Septopreoptic holoprosencephaly

Synonyms: Septopreoptic HPE

Type
Clinical subtype
Group
Subtype of disorder
Inheritance
Multigenic/multifactorial
Age of onset
Infancy, Neonatal
Status
active

A rare subtype of holoprosencephaly characterized by midline fusion limited to the septal and/or preoptic regions of the telencephalon without a significant frontal neocortical fusion. Midline craniofacial malformations are generally mild and include solitary median maxillary incisor and pyriform sinus stenosis. Other reported manifestations include language delay, learning difficulties, and behavioral disorders. Imaging reveals abnormal fornix, absent or hypoplasic anterior corpus callosum, and unpaired anterior cerebral artery.

1

Names in Orphadata languages

12 of 12 languages
LangNameSynonyms
enSeptopreoptic holoprosencephalySeptopreoptic HPE
frHoloprosencéphalie septo-préoptiqueHPE septo-préoptique
deHoloprosenzephalie, septopräoptischeHPE, septopräoptische
esHoloprosencefalia septopreópticaHPE septopreóptica
itOloprosencefalia setto-preotticaHPE setto-preottica
nlSeptopreoptische holoprosencefalieSeptopreoptische HPE
ptHoloprosencefalia septo-pre-opticaHPE septo-pre-optica
plHoloprosencefalia przegrodowo-przedwzrokowaHPE przegrodowo-przedwzrokowa HPE
csSeptopreoptická holoprosencefalieSeptopreoptická HPE
ukСептопреоптична голопрозенцефаліяСептопреоптичний HPE
zh视交叉前脑无裂畸形视交叉HPE
trSeptopreoptik holoprozensefaliSeptopreoptik HPE

Definition in:

2

Cross-references

qualifier = Orphanet mapping relation
SourceCodeQualifierICD relationValidation
OMIM157170NTBTvalidated
OMIM609637NTBTvalidated
OMIM610829NTBTvalidated
ICD-10Q04.2NTBTattributedvalidated
ICD-11LA05.2NTBTattributedvalidated
UMLSC5679777Evalidated

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):

  • ORPHA:2162Holoprosencephaly
    rare developmental anomalies during embryogenesis; rare genetic diseases; rare neurological diseases; rare endocrine diseases

No children.

4

Genes

15 direct
GeneAssociationStatusHGNCEnsemblOMIMLocusNameSource of validation
CDONDisease-causing germline mutation(s) inAssessedHGNC:17104ENSG0000006430960870711q24.2cell adhesion associated, oncogene regulated
CRIPTODisease-causing germline mutation(s) inAssessedHGNC:11701ENSG000002411861873953p21.31cripto, EGF-CFC family member
DISP1Disease-causing germline mutation(s) inAssessedHGNC:19711ENSG000001543096075021q41dispatched RND transporter family member 1
DLL1Disease-causing germline mutation(s) inAssessedHGNC:2908ENSG000001987196065826q27delta like canonical Notch ligand 1
FGF8Disease-causing germline mutation(s) inAssessedHGNC:3686ENSG0000010783160048310q24.32fibroblast growth factor 8
FOXH1Disease-causing germline mutation(s) inAssessedHGNC:3814ENSG000001609736036218q24.3forkhead box H1
GAS1Disease-causing germline mutation(s) inAssessedHGNC:4165ENSG000001804471391859q21.33growth arrest specific 1
GLI2Disease-causing germline mutation(s) inAssessedHGNC:4318ENSG000000740471652302q14.2GLI family zinc finger 2
NODALDisease-causing germline mutation(s) inAssessedHGNC:7865ENSG0000015657460126510q22.1nodal growth differentiation factor
PTCH1Disease-causing germline mutation(s) inAssessedHGNC:9585ENSG000001859206013099q22.32patched 1
SHHDisease-causing germline mutation(s) inAssessedHGNC:10848ENSG000001646906007257q36.3sonic hedgehog signaling molecule
SIX3Disease-causing germline mutation(s) inAssessedHGNC:10889ENSG000001380836037142p21SIX homeobox 3
STILDisease-causing germline mutation(s) inAssessedHGNC:10879ENSG000001234731815901p33STIL centriolar assembly protein29785796[PMID]
TGIF1Disease-causing germline mutation(s) inAssessedHGNC:11776ENSG0000017742660263018p11.31TGFB induced factor homeobox 1
ZIC2Disease-causing germline mutation(s) inAssessedHGNC:12873ENSG0000004335560307313q32.3Zic family zinc finger 2
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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.

6

HPO phenotypes

24 annotations · validated 2020-06-10
HPOTerm (as annotated by Orphanet)Diagnostic
Frequent (79-30%)
HP:0001273Abnormal corpus callosum morphology
HP:0000772Abnormal rib morphology
HP:0003468Abnormal vertebral morphology
HP:0002418Abnormality of midbrain morphology
HP:0000830Anterior hypopituitarism
HP:0000863Central diabetes insipidus
HP:0002474Expressive language delay
HP:0001290Generalized hypotonia
HP:0100710Impulsivity
HP:0001249Intellectual disability
HP:0000826Precocious puberty
HP:0000736Short attention span
HP:0001328Specific learning disability
Occasional (29-5%)
HP:0007375Abnormality of the septum pellucidum
HP:0001545Anteriorly placed anus
HP:0001680Coarctation of aorta
HP:0002015Dysphagia
HP:0007330Frontoethmoidal encephalocele
HP:0011471Gastrostomy tube feeding in infancy
HP:0012110Hypoplasia of the pons
HP:0001355Megalencephaly
HP:0000252Microcephaly
HP:0012650Perisylvian polymicrogyria
HP:0031913Rhombencephalosynapsis

Annotation source: 20488907[PMID]_32103291[PMID]

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Sources for this card