neurodevelopmental disorder with seizures and speech and walking impairment
MONDO:0032775Mondo
Findings
No curated finding names neurodevelopmental disorder with seizures and speech and walking impairment 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
28 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.
- Delayed speech and language developmentHPOHP:0000750
- 5 of 5 reported patients
- EEG abnormalityHPOHP:0002353
- 5 of 5 reported patients
- Global developmental delayHPOHP:0001263
- 5 of 5 reported patients
- HypotoniaHPOHP:0001252
- 5 of 5 reported patients
- SeizureHPOHP:0001250
- 4 of 4 reported patients
- Deeply set eyeHPOHP:0000490
- 4 of 5 reported patients
- Delayed ability to walkHPOHP:0031936
- 3 of 5 reported patients
- Recurrent hand flappingHPOHP:0100023
- 3 of 5 reported patients
- Axial hypotoniaHPOHP:0008936
- 2 of 5 reported patients
- ConstipationHPOHP:0002019
- 2 of 5 reported patients
- Increased nuchal translucencyHPOHP:0010880
- 2 of 5 reported patients · Third trimester onset
- Infra-orbital creaseHPOHP:0100876
- 2 of 5 reported patients
Show the remaining 16
- Limb hypertoniaHPOHP:0002509
- 2 of 5 reported patients
- Sacral dimpleHPOHP:0000960
- 2 of 5 reported patients
- Clinodactyly of the 5th fingerHPOHP:0004209
- 1 of 5 reported patients
- Fetal intraventricular hemorrhageHPOHP:0034210
- 1 of 5 reported patients · Third trimester onset
- High palateHPOHP:0000218
- 1 of 5 reported patients
- Low-set earsHPOHP:0000369
- 1 of 5 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.
- DHPSHGNC:2869
- Strong · Labcorp Genetics (formerly Invitae) · Autosomal recessive · 2021
- Strong · G2P · Autosomal recessive · 2025
- Strong · PanelApp Australia · Autosomal recessive · 2025
- Moderate · Illumina · Autosomal recessive · 2020
- Limited · Ambry Genetics · Autosomal recessive · 2019
Where it sits
Other names
1 name
Resolves to: neurodevelopmental disorder with seizures and speech and walking impairment
- Also called
- Deoxyhypusine Synthase Disorder