neurodevelopmental disorder with hypotonia, impaired speech, and behavioral abnormalities
MONDO:0859243Mondo
Findings
No curated finding names neurodevelopmental disorder with hypotonia, impaired speech, and behavioral abnormalities yet. Everything below is reference data from Mondo, HPO and GenCC, not evidence about what affects it.
Definition
- Inheritance
- Autosomal dominant inheritance
HPO, annotations 2026-09-02
Features
24 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.
- Delayed ability to walkHPOHP:0031936
- 20 of 20 reported patients
- Global developmental delayHPOHP:0001263
- 24 of 24 reported patients
- Intellectual disabilityHPOHP:0001249
- 20 of 20 reported patients
- Delayed speech and language developmentHPOHP:0000750
- 22 of 23 reported patients
- Delayed ability to sitHPOHP:0025336
- 21 of 23 reported patients
- HypotoniaHPOHP:0001252
- 21 of 23 reported patients
- Absent speechHPOHP:0001344
- 16 of 21 reported patients
- SeizureHPOHP:0001250
- 17 of 23 reported patients
- Feeding difficultiesHPOHP:0011968
- 9 of 24 reported patients
- Tapered fingerHPOHP:0001182
- 9 of 24 reported patients
- Severe temper tantrumsHPOHP:0025162
- 7 of 19 reported patients
- Anteverted naresHPOHP:0000463
- 8 of 24 reported patients
Show the remaining 12
- Autistic behaviorHPOHP:0000729
- 7 of 21 reported patients
- Short noseHPOHP:0003196
- 8 of 24 reported patients
- Stereotypical hand wringingHPOHP:0012171
- 6 of 19 reported patients
- ObesityHPOHP:0001513
- 7 of 24 reported patients
- Bilateral tonic-clonic seizureHPOHP:0002069
- 5 of 23 reported patients
- Generalized non-motor (absence) seizureHPOHP:0002121
- 5 of 23 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.
- GNAI1HGNC:4384
- Strong · Labcorp Genetics (formerly Invitae) · Autosomal dominant · 2022
- Strong · Broad Center for Mendelian Genomics · Autosomal dominant · 2020
- Strong · PanelApp Australia · Autosomal dominant · 2025
- Moderate · G2P · Autosomal dominant · 2024