myasthenic syndrome, congenital, 7B, presynaptic, autosomal recessive
MONDO:0030341Mondo
Findings
No curated finding names myasthenic syndrome, congenital, 7B, presynaptic, autosomal recessive yet. Everything below is reference data from Mondo, HPO and GenCC, not evidence about what affects it.
Definition
- Inheritance
- Autosomal recessive inheritance
- Onset and course
- Congenital onset · Fetal onset
HPO, annotations 2026-09-02
Features
29 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.
- HypotoniaHPOHP:0001252
- 7 of 7 reported patients · Congenital onset
- Weakness of facial musculatureHPOHP:0030319
- 7 of 7 reported patients
- AreflexiaHPOHP:0001284
- 6 of 7 reported patients
- EMG: decremental response of compound muscle action potential to repetitive nerve stimulationHPOHP:0003403
- 4 of 7 reported patients
- Knee flexion contractureHPOHP:0006380
- 4 of 7 reported patients
- Limited extraocular movementsHPOHP:0007941
- 4 of 7 reported patients
- Decreased fetal movementHPOHP:0001558
- 3 of 7 reported patients · Fetal onset
- ScoliosisHPOHP:0002650
- 3 of 7 reported patients
- Weak voiceHPOHP:0001621
- 3 of 7 reported patients
- Easy fatigabilityHPOHP:0003388
- 2 of 7 reported patients
- Failure to thriveHPOHP:0001508
- 2 of 7 reported patients · Infantile onset
- Hypernasal speechHPOHP:0001611
- 2 of 7 reported patients
Show the remaining 17
- Reduced forced vital capacityHPOHP:0032341
- 2 of 7 reported patients
- Respiratory insufficiency due to muscle weaknessHPOHP:0002747
- 2 of 7 reported patients
- Thin corpus callosumHPOHP:0033725
- 2 of 7 reported patients
- Tongue fasciculationsHPOHP:0001308
- 2 of 7 reported patients
- Weak cryHPOHP:0001612
- 2 of 7 reported patients
- Slow saccadic eye movementsHPOHP:0000514
- 3 of 14 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.
- SYT2HGNC:11510
- Definitive · G2P · Autosomal recessive · 2025
- Strong · PanelApp Australia · Autosomal recessive · 2025
Where it sits
Other names
1 name
Resolves to: myasthenic syndrome, congenital, 7B, presynaptic, autosomal recessive
- Also called
- CMS7B