craniofacial dysplasia - osteopenia syndrome
Findings
No curated finding names craniofacial dysplasia - osteopenia syndrome yet. Everything below is reference data from Mondo, HPO and GenCC, not evidence about what affects it.
Definition
A disorder of development or morphogenesis caused by a variation in the IRX5 gene and characterized by craniofacial dysmorphism, including high-severity hypertelorism, severe myopia, upslanting palpebral fissures, brachycephaly, atypical ears, sloping shoulders, enamel hypoplasia, osteopenia with chronic fractures, sensorineural hearing loss, and intellectual disability/borderline intelligence.
Definition from the Mondo Disease Ontology (MONDO:0012634), read 2026-09-29. CC BY 4.0.
- Inheritance
- Autosomal recessive inheritance
- Onset and course
- Congenital onset
HPO, annotations 2026-09-02
Features
51 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.
- Abnormal number of hair whorlsHPOHP:0010813
- 5 of 5 reported patients
- Anteverted naresHPOHP:0000463
- 5 of 5 reported patients
- BlepharophimosisHPOHP:0000581
- 2 of 2 reported patients
- CryptorchidismHPOHP:0000028
- 5 of 5 reported patients
- Dental malocclusionHPOHP:0000689
- 1 of 1 reported patient
- Enamel hypoplasiaHPOHP:0006297
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.
- IRX5HGNC:14361
- Strong · Labcorp Genetics (formerly Invitae) · Autosomal recessive · 2018
- Strong · G2P · Autosomal recessive · 2015
- Strong · PanelApp Australia · Autosomal recessive · 2025
- Moderate · ClinGen · Autosomal recessive · 2025
- Supportive · Orphanet · Autosomal recessive · 2021
Where it sits
Other names
2 names
Resolves to: craniofacial dysplasia - osteopenia syndrome
- Also called
- Hamamy syndromeIRX5-related craniofacial dysostosis with osteopenia, intellectual disability, and dental anomalies