mega-corpus-callosum syndrome with cerebellar hypoplasia and cortical malformations
MONDO:0032648Mondo
Findings
No curated finding names mega-corpus-callosum syndrome with cerebellar hypoplasia and cortical malformations 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
17 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.
- Intellectual disabilityHPOHP:0001249
- 3 of 3 reported patients
- Thick corpus callosumHPOHP:0007074
- 6 of 6 reported patients
- VentriculomegalyHPOHP:0002119
- 6 of 6 reported patients
- Absent speechHPOHP:0001344
- 5 of 6 reported patients
- Cerebellar hypoplasiaHPOHP:0001321
- 5 of 6 reported patients
- Generalized hypotoniaHPOHP:0001290
- 4 of 6 reported patients
- Hypoplasia of the brainstemHPOHP:0002365
- 4 of 6 reported patients
- Simplified gyral patternHPOHP:0009879
- 4 of 6 reported patients
- Cerebellar vermis hypoplasiaHPOHP:0001320
- 3 of 6 reported patients
- Inability to walkHPOHP:0002540
- 3 of 6 reported patients
- SeizureHPOHP:0001250
- 2 of 6 reported patients
- Short statureHPOHP:0004322
- 2 of 6 reported patients
Show the remaining 5
- Unsteady gaitHPOHP:0002317
- 1 of 3 reported patients
- Oculomotor apraxiaHPOHP:0000657
- 1 of 6 reported patients
- Periventricular heterotopiaHPOHP:0007165
- 1 of 6 reported patients
- Truncal ataxiaHPOHP:0002078
- 1 of 6 reported patients
- Global developmental delayHPOHP:0001263
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.
- MAST1HGNC:19034
- Strong · Labcorp Genetics (formerly Invitae) · Autosomal dominant · 2023
- Strong · G2P · Autosomal dominant · 2025
- Strong · PanelApp Australia · Autosomal dominant · 2025
- Moderate · Ambry Genetics · Autosomal dominant · 2020
Where it sits
- A kind of