corpus callosum agenesis-intellectual disability-coloboma-micrognathia syndrome
Findings
No curated finding names corpus callosum agenesis-intellectual disability-coloboma-micrognathia syndrome yet. Everything below is reference data from Mondo, HPO and GenCC, not evidence about what affects it.
Definition
A developmental anomalies syndrome characterized by coloboma of the iris and optic nerve, facial dysmorphism (high forehead, microretrognathia, low-set ears), intellectual deficit, agenesis of the corpus callosum (ACC), sensorineural hearing loss, skeletal anomalies and short stature.
Definition from the Mondo Disease Ontology (MONDO:0010333), read 2026-09-29. CC BY 4.0.
- Inheritance
- X-linked recessive inheritance
- Onset and course
- Congenital onset
HPO, annotations 2026-09-02
Features
35 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
- 2 of 2 reported patients
- Very frequent (80% to 99% of cases)
- Broad foreheadHPOHP:0000337
- 2 of 2 reported patients
- Broad neckHPOHP:0000475
- 2 of 2 reported patients
- Cupped earHPOHP:0000378
- 2 of 2 reported patients
- Very frequent (80% to 99% of cases)
- Downslanted palpebral fissuresHPOHP:0000494
- 2 of 2 reported patients
- Very frequent (80% to 99% 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.
- IGBP1HGNC:5461
- Supportive · Orphanet · X-linked · 2021
- Limited · Ambry Genetics · Autosomal dominant · 2018
- Limited · Labcorp Genetics (formerly Invitae) · Unknown · 2021
- Limited · G2P · X-linked · 2015
- Limited · PanelApp Australia · X-linked · 2025
- Disputed Evidence · ClinGen · X-linked · 2021
Where it sits
Other names
6 names
Resolves to: corpus callosum agenesis-intellectual disability-coloboma-micrognathia syndrome
- Also called
- corpus callosum, agenesis of, with impaired intellectual development, ocular coloboma and micrognathia, X-linked recessivecorpus callosum, agenesis of, with intellectual disability, ocular coloboma and micrognathiaGraham-Cox syndromeintellectual disability, X-linked, syndromic 28mental retardation, X-linked, syndromic 28MRXS28