leukoencephalopathy, developmental delay, and episodic neurologic regression syndrome
MONDO:0030035Mondo
Findings
No curated finding names leukoencephalopathy, developmental delay, and episodic neurologic regression syndrome yet. Everything below is reference data from Mondo, HPO and GenCC, not evidence about what affects it.
Definition
- Inheritance
- Autosomal dominant inheritance
- Onset and course
- Infantile onset
HPO, annotations 2026-09-02
Features
27 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 CNS myelinationHPOHP:0002188
- 2 of 2 reported patients
- HypertoniaHPOHP:0001276
- 8 of 9 reported patients
- HypotoniaHPOHP:0001252
- 7 of 9 reported patients
- SpasticityHPOHP:0001257
- 7 of 9 reported patients
- DysarthriaHPOHP:0001260
- 6 of 9 reported patients
- Gait ataxiaHPOHP:0002066
- 4 of 7 reported patients
- DystoniaHPOHP:0001332
- 4 of 9 reported patients
- ParkinsonismHPOHP:0001300
- 4 of 9 reported patients
- SeizureHPOHP:0001250
- 4 of 9 reported patients
- Absent speechHPOHP:0001344
- 3 of 9 reported patients
- BradykinesiaHPOHP:0002067
- 3 of 9 reported patients
- Inability to walkHPOHP:0002540
- 3 of 9 reported patients
Show the remaining 15
- TremorHPOHP:0001337
- 3 of 9 reported patients
- Truncal ataxiaHPOHP:0002078
- 3 of 9 reported patients
- Mask-like faciesHPOHP:0000298
- 2 of 9 reported patients
- MicrocephalyHPOHP:0000252
- 2 of 9 reported patients
- Bowel incontinenceHPOHP:0002607
- 1 of 9 reported patients
- ChoreoathetosisHPOHP:0001266
- 1 of 9 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.
- EIF2AK2HGNC:9437
- Strong · Labcorp Genetics (formerly Invitae) · Autosomal dominant · 2021
- Strong · G2P · Autosomal dominant · 2025
- Moderate · Ambry Genetics · Autosomal dominant · 2020
- Moderate · Illumina · Autosomal dominant · 2021
Where it sits
- A kind of
Other names
2 names
Resolves to: leukoencephalopathy, developmental delay, and episodic neurologic regression syndrome
- Also called
- LEUDENLeuden Syndrome