early-onset progressive encephalopathy-hearing loss-pons hypoplasia-brain atrophy syndrome
MONDO:0044696Mondo
Findings
No curated finding names early-onset progressive encephalopathy-hearing loss-pons hypoplasia-brain atrophy 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 · Progressive
HPO, annotations 2026-09-02
Features
39 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.
- Agenesis of corpus callosumHPOHP:0001274
- 3 of 3 reported patients
- Occasional (5% to 29% of cases)
- Appendicular spasticityHPOHP:0034353
- 3 of 3 reported patients
- Axial hypotoniaHPOHP:0008936
- 3 of 3 reported patients
- Frequent (30% to 79% of cases)
- Cerebral cortical atrophyHPOHP:0002120
- 3 of 3 reported patients
- Frequent (30% to 79% of cases)
- Developmental regressionHPOHP:0002376
- 3 of 3 reported patients
- Occasional (5% to 29% of cases)
- DysphagiaHPOHP:0002015
- 3 of 3 reported patients
- Frequent (30% to 79% of cases)
- DystoniaHPOHP:0001332
- 3 of 3 reported patients
- Frequent (30% to 79% of cases)
- EncephalopathyHPOHP:0001298
- 3 of 3 reported patients
- Extra-axial cerebrospinal fluid accumulationHPOHP:0012510
- 3 of 3 reported patients
- Feeding difficultiesHPOHP:0011968
- 3 of 3 reported patients
- Hearing impairmentHPOHP:0000365
- 3 of 3 reported patients
- Hypoplasia of the ponsHPOHP:0012110
- 3 of 3 reported patients
- Frequent (30% to 79% of cases)
Show the remaining 27
- MicrocephalyHPOHP:0000252
- 3 of 3 reported patients
- MyoclonusHPOHP:0001336
- 3 of 3 reported patients
- Frequent (30% to 79% of cases)
- ScoliosisHPOHP:0002650
- 3 of 3 reported patients
- Frequent (30% to 79% of cases)
- Severe global developmental delayHPOHP:0011344
- 3 of 3 reported patients
- Frequent (30% to 79% of cases)
- Simplified gyral patternHPOHP:0009879
- 3 of 3 reported patients
- VentriculomegalyHPOHP:0002119
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.
- TRAPPC12HGNC:24284
- Strong · Labcorp Genetics (formerly Invitae) · Autosomal recessive · 2022
- Strong · G2P · Autosomal recessive · 2017
- Strong · PanelApp Australia · Autosomal recessive · 2025
- Limited · Ambry Genetics · Autosomal recessive · 2020