megalencephalic leukoencephalopathy with subcortical cysts 2B, remitting, with or without intellectual disability
Findings
No curated finding names megalencephalic leukoencephalopathy with subcortical cysts 2B, remitting, with or without intellectual disability 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
- Congenital onset · Infantile onset
HPO, annotations 2026-09-02
Features
11 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.
- MacrocephalyHPOHP:0000256
- 18 of 18 reported patients
- MegalencephalyHPOHP:0001355
- 18 of 18 reported patients
- Motor delayHPOHP:0001270
- 11 of 18 reported patients
- Delayed speech and language developmentHPOHP:0000750
- 10 of 18 reported patients
- HypotoniaHPOHP:0001252
- 7 of 18 reported patients
- ClumsinessHPOHP:0002312
- 6 of 18 reported patients
- Intellectual disabilityHPOHP:0001249
- 5 of 18 reported patients
- Absent speechHPOHP:0001344
- 1 of 18 reported patients
- SeizureHPOHP:0001250
- 1 of 18 reported patients
- Diffuse swelling of cerebral white matterHPOHP:0007341
- Diffuse white matter abnormalitiesHPOHP:0007204
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.
- HEPACAMHGNC:26361
- Definitive · ClinGen · Autosomal dominant · 2023
- Strong · Labcorp Genetics (formerly Invitae) · Autosomal dominant · 2021
- Strong · PanelApp Australia · Autosomal dominant · 2025
- Moderate · Ambry Genetics · Autosomal dominant · 2022
Where it sits
Other names
1 name
Resolves to: megalencephalic leukoencephalopathy with subcortical cysts 2B, remitting, with or without intellectual disability
- Also called
- megalencephalic leukoencephalopathy with subcortical cysts 2B, remitting, with or without mental retardation