microcephaly-intellectual disability-sensorineural hearing loss-epilepsy-abnormal muscle tone syndrome
MONDO:0014698Mondo
Findings
No curated finding names microcephaly-intellectual disability-sensorineural hearing loss-epilepsy-abnormal muscle tone syndrome 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 · Infantile onset
HPO, annotations 2026-09-02
Features
63 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.
- Absent speechHPOHP:0001344
- 13 of 13 reported patients
- Frequent (30% to 79% of cases)
- Global developmental delayHPOHP:0001263
- 14 of 14 reported patients
- Very frequent (80% to 99% of cases)
- Inability to walkHPOHP:0002540
- 12 of 12 reported patients
- Frequent (30% to 79% of cases)
- Sensorineural hearing impairmentHPOHP:0000407
- 14 of 14 reported patients
- Very frequent (80% to 99% of cases)
- Visual impairmentHPOHP:0000505
- 13 of 13 reported patients
- Very frequent (80% to 99% of cases)
- SeizureHPOHP:0001250
- 13 of 14 reported patients
- Frequent (30% to 79% of cases)
- MicrocephalyHPOHP:0000252
- 12 of 13 reported patients
- Very frequent (80% to 99% of cases)
- HypotoniaHPOHP:0001252
- 12 of 14 reported patients
- EEG abnormalityHPOHP:0002353
- Very frequent (80% to 99% of cases)
- Cerebral visual impairmentHPOHP:0100704
- 9 of 13 reported patients
- Frequent (30% to 79% of cases)
- Feeding difficultiesHPOHP:0011968
- 9 of 14 reported patients
- SpasticityHPOHP:0001257
- 9 of 14 reported patients
- Frequent (30% to 79% of cases)
Show the remaining 51
- Abnormal brain morphologyHPOHP:0012443
- Frequent (30% to 79% of cases)
- Autistic behaviorHPOHP:0000729
- Frequent (30% to 79% of cases)
- Bilateral tonic-clonic seizureHPOHP:0002069
- Frequent (30% to 79% of cases)
- Cerebral hypomyelinationHPOHP:0006808
- Frequent (30% to 79% of cases)
- Floppy infantHPOHP:0008947
- Frequent (30% to 79% of cases)
- Generalized myoclonic seizureHPOHP:0002123
- Frequent (30% to 79% of cases)
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.
- AFG2AHGNC:18119
- Definitive · G2P · Autosomal recessive · 2016
- Strong · Labcorp Genetics (formerly Invitae) · Autosomal recessive · 2021
- Strong · PanelApp Australia · Autosomal recessive · 2025
- Supportive · Orphanet · Autosomal recessive · 2021
Where it sits
- A kind of
Other names
2 names
Resolves to: microcephaly-intellectual disability-sensorineural hearing loss-epilepsy-abnormal muscle tone syndrome
- Also called
- microcephaly-intellectual disability-sensorineural deafness-epilepsy-abnormal muscle tone syndromeneurodevelopmental disorder with hearing loss, seizures, and brain abnormalities