developmental and epileptic encephalopathy, 18
MONDO:0014201Mondo
Findings
No curated finding names developmental and epileptic encephalopathy, 18 yet. Everything below is reference data from Mondo, HPO and GenCC, not evidence about what affects it.
Definition
- Inheritance
- Autosomal recessive inheritance
- Onset and course
- Infantile onset
HPO, annotations 2026-09-02
Features
10 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.
- HypotoniaHPOHP:0001252
- 2 of 2 reported patients · Infantile onset
- Profound global developmental delayHPOHP:0012736
- 3 of 3 reported patients
- Absent speechHPOHP:0001344
- 2 of 3 reported patients
- Aortic regurgitationHPOHP:0001659
- 1 of 3 reported patients
- Atrial septal defectHPOHP:0001631
- 1 of 3 reported patients
- Atypical absence seizureHPOHP:0007270
- 1 of 3 reported patients
- Bilateral tonic-clonic seizure with focal onsetHPOHP:0007334
- 1 of 3 reported patients
- OligohydramniosHPOHP:0001562
- 1 of 3 reported patients
- PolyhydramniosHPOHP:0001561
- 1 of 3 reported patients
- Tonic seizureHPOHP:0032792
- 1 of 3 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.
- SZT2HGNC:29040
- Definitive · Illumina · Autosomal recessive · 2020
- Strong · Ambry Genetics · Autosomal recessive · 2018
- Strong · Labcorp Genetics (formerly Invitae) · Autosomal recessive · 2022
- Strong · PanelApp Australia · Autosomal recessive · 2025
- Strong · G2P · Autosomal recessive · 2025
Where it sits
Other names
6 names
Resolves to: developmental and epileptic encephalopathy, 18
- Also called
- DEE18developmental and epileptic encephalopathy 18early infantile epileptic encephalopathy without suppression burstEIEE18epileptic encephalopathy, early infantile, 18epileptic encephalopathy, early infantile, type 18