Charcot-Marie-Tooth disease, demyelinating, IIA 1I
MONDO:0030677Mondo
Findings
No curated finding names Charcot-Marie-Tooth disease, demyelinating, IIA 1I 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 · Childhood onset
HPO, annotations 2026-09-02
Features
21 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.
- Demyelinating peripheral neuropathyHPOHP:0007108
- 5 of 6 reported patients
- DysarthriaHPOHP:0001260
- 5 of 6 reported patients
- Global developmental delayHPOHP:0001263
- 5 of 6 reported patients
- Intellectual disabilityHPOHP:0001249
- 5 of 6 reported patients
- Babinski signHPOHP:0003487
- 4 of 6 reported patients
- Delayed speech and language developmentHPOHP:0000750
- 4 of 6 reported patients
- Impairment of activities of daily livingHPOHP:0031058
- 4 of 6 reported patients
- Spastic gaitHPOHP:0002064
- 4 of 6 reported patients
- SpasticityHPOHP:0001257
- 4 of 6 reported patients
- AtaxiaHPOHP:0001251
- 3 of 6 reported patients
- Delayed ability to walkHPOHP:0031936
- 3 of 6 reported patients
- HyperreflexiaHPOHP:0001347
- 3 of 6 reported patients
Show the remaining 9
- Impaired distal proprioceptionHPOHP:0006858
- 1 of 2 reported patients
- Impaired distal vibration sensationHPOHP:0006886
- 1 of 2 reported patients
- SeizureHPOHP:0001250
- 3 of 6 reported patients
- Cerebellar atrophyHPOHP:0001272
- 1 of 6 reported patients
- Chiari type I malformationHPOHP:0007099
- 1 of 6 reported patients
- Delayed CNS myelinationHPOHP:0002188
- 1 of 6 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.
- POLR3BHGNC:30348
- Strong · Labcorp Genetics (formerly Invitae) · Autosomal dominant · 2022
- Strong · PanelApp Australia · Autosomal dominant · 2025
Where it sits
Other names
2 names
Resolves to: Charcot-Marie-Tooth disease, demyelinating, IIA 1I
- Also called
- Charcot-Marie-Tooth disease neuropathy, IIA 1ICMT1I