childhood onset GLUT1 deficiency syndrome 2
Findings
No curated finding names childhood onset GLUT1 deficiency syndrome 2 yet. Everything below is reference data from Mondo, HPO and GenCC, not evidence about what affects it.
Definition
A form of paroxysmal dyskinesia, characterized by painless attacks of dystonia of the extremities triggered by prolonged physical activities.
Definition from the Mondo Disease Ontology (MONDO:0012805), read 2026-09-29. CC BY 4.0.
- Inheritance
- Autosomal dominant inheritance
- Onset and course
- Infantile onset · Juvenile onset
HPO, annotations 2026-09-02
Features
25 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.
- Decreased circulating haptoglobin concentrationHPOHP:0020181
- 4 of 4 reported patients
- DyskinesiaHPOHP:0100660
- 4 of 4 reported patients
- Hemolytic anemiaHPOHP:0001878
- 4 of 4 reported patients
- ReticulocytosisHPOHP:0001923
- 4 of 4 reported patients
- SplenomegalyHPOHP:0001744
- 4 of 4 reported patients
- ChoreoathetosisHPOHP:0001266
- Very frequent (80% to 99% of cases)
- DystoniaHPOHP:0001332
Show the remaining 13
- Involuntary movementsHPOHP:0004305
- Frequent (30% to 79% of cases)
- ParesthesiaHPOHP:0003401
- Frequent (30% to 79% of cases)
- SeizureHPOHP:0001250
- 2 of 4 reported patients
- Frequent (30% to 79% of cases)
- Torsion dystoniaHPOHP:0001304
- Frequent (30% to 79% of cases)
- Global developmental delayHPOHP:0001263
- 2 of 4 reported patients
- Aggressive behaviorHPOHP:0000718
- Occasional (5% to 29% of cases)
Genes
2 genes
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.
Where it sits
Other names
8 names
Resolves to: childhood onset GLUT1 deficiency syndrome 2
- Also called
- childhood onset GLUT1 deficiency syndrome type 2dystonia 18DYT18GLUT1 deficiency syndrome 2, childhood onsetGLUT1 deficiency syndrome type 2paroxysmal exercise-induced dystoniaPEDPxMD-SLC2A1