developmental and epileptic encephalopathy, 47
Findings
No curated finding names developmental and epileptic encephalopathy, 47 yet. Everything below is reference data from Mondo, HPO and GenCC, not evidence about what affects it.
Definition
Any early infantile epileptic encephalopathy in which the cause of the disease is a mutation in the FGF12 gene.
Definition from the Mondo Disease Ontology (MONDO:0014949), read 2026-09-29. CC BY 4.0.
- Inheritance
- Autosomal dominant inheritance
- Onset and course
- Infantile onset · Neonatal onset
HPO, annotations 2026-09-02
Features
22 features
What the disease is reported to present with, and how often among people who have it — never how often a feature means the disease. HPO, annotations 2026-09-02.
- Cerebellar atrophyHPOHP:0001272
- 2 of 2 reported patients
- Developmental regressionHPOHP:0002376
- 1 of 1 reported patient
- Epileptic encephalopathyHPOHP:0200134
- 2 of 2 reported patients
- Feeding difficultiesHPOHP:0011968
- 2 of 2 reported patients
- Limb ataxiaHPOHP:0002070
- 2 of 2 reported patients
- Multifocal epileptiform dischargesHPOHP:0010841
- 2 of 2 reported patients
- Profound intellectual disabilityHPO
Show the remaining 10
- Attenuation of retinal blood vesselsHPOHP:0007843
- 1 of 2 reported patients
- Axial hypotoniaHPOHP:0008936
- 1 of 2 reported patients
- Bilateral tonic-clonic seizureHPOHP:0002069
- 1 of 2 reported patients
- Cerebral visual impairmentHPOHP:0100704
- 1 of 2 reported patients
- Focal-onset seizureHPOHP:0007359
- 1 of 2 reported patients
- HypotoniaHPOHP:0001252
- 1 of 2 reported patients
Genes
1 gene
Germline variants in the gene encoding each protein, as classified by GenCC submitters, each in their own words. Limited, disputed and refuted submissions are listed too.
- FGF12HGNC:3668
- Definitive · G2P · Autosomal dominant · 2025
- Strong · Labcorp Genetics (formerly Invitae) · Autosomal dominant · 2023
- Strong · PanelApp Australia · Autosomal dominant · 2025
- Moderate · Ambry Genetics · Autosomal dominant · 2016
Where it sits
Other names
8 names
Resolves to: developmental and epileptic encephalopathy, 47
- Also called
- DEE47developmental and epileptic encephalopathy 47early infantile epileptic encephalopathy caused by mutation in FGF12EIEE47epileptic encephalopathy, early infantile, 47epileptic encephalopathy, early infantile, 47; EIEE47epileptic encephalopathy, early infantile, type 47FGF12 early infantile epileptic encephalopathy