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A rare genetic disease characterized by hypertelorism with facial features that can closely resemble craniofrontonasal dysplasia, such as prominent forehead, widow's peak, heavy and broad eyebrows, long palpebral fissures, ptosis, high and broad nasal bridge, short nose, low-set ears, natal teeth, thin upper lip and a grooved chin, as well as limb (i.e. fifth-finger clinodactyly, pes adductus, mild interdigital webbing), urogenital (i.e. bilateral cryptorchidism and shawl scrotum in males) and umbilical (i.e. hernia/small omphalocele) anomalies and cardiac (i.e. ventricular or atrial septal defect, patent ductus arteriosus) defects. Additional findings such as polycystic kidneys and iridochorioretinal colobomas have also been reported and psychomotor development is normal. The facial features can also resemble Aarskog and Opitz G/BBB syndromes.
Features include always present findings: Thin upper lip vermilion; and very common findings: Long philtrum, Hypertelorism, Highly arched eyebrow, and Small hand and others. 63 total HPO annotations.
Organ System | Phenotype Count | Example Features |
|---|---|---|
Head and neck | 6 | Sagittal craniosynostosis, Coronal craniosynostosis, Thin upper lip vermilion |
SPECC1L function has not been fully characterized.
Teebi hypertelorism syndrome 1 is associated with mutations in the SPECC1L gene on chromosome 22.
Genetic testing for SPECC1L is available. Testing is considered confirmatory for diagnosis.
Biomarker and diagnostic research for Teebi hypertelorism syndrome 1 has been reported in the published literature.
Phenotype severity distribution: 1 always present feature, 7 very common features, 37 common features.
Estimated prevalence: <1 in 1,000,000 (VERY_RARE).
No clinical trials have been registered for Teebi hypertelorism syndrome 1.
103 publications have been identified in PubMed for Teebi hypertelorism syndrome 1. Research spans Epidemiology / Natural History (30%), Review / Meta-Analysis (26%), and Basic Science / Preclinical (25%).
Research Type | Count | % of Total |
|---|---|---|
Disease patterns and progression | 31 | 30% |
Data assembled from 6 of 12 sources · Last updated Sep 19, 2026, 2:58 PM UTC
Online Mendelian Inheritance in Man
European rare disease database
Genetic and Rare Diseases Info Center
Common questions about Teebi hypertelorism syndrome 1
Heart and blood vessels
4 |
Ventricular septal defect, Aortic root aneurysm, Atrial septal defect |
Brain and nerves | 4 | Anxiety, Global developmental delay, Depressed nasal bridge |
Arms and legs | 4 | Small hand, Short toe, Clinodactyly of the 5th finger |
Eyes | 3 | Bilateral ptosis, Strabismus, Ptosis |
Lungs and breathing | 1 | Pulmonary hypoplasia |
Growth and development | 1 | Short stature |
Kidneys and urinary system | 1 | Ectopic kidney |
Research summaries
27 |
26% |
Laboratory research | 25 | 25% |
Testing and diagnosis research | 7 | 7% |
Patient case studies | 6 | 6% |
Clinical study results | 4 | 4% |
New treatment approaches | 2 | 2% |
Lawrence CN (2026). [PMID: 42209108](https://pubmed.ncbi.nlm.nih.gov/42209108/). *J Am Acad Dermatol*. [Review / Meta-Analysis]
Hack S (2026). [PMID: 41800660](https://pubmed.ncbi.nlm.nih.gov/41800660/). *Otolaryngol Head Neck Surg*. [Review / Meta-Analysis]
Mancini V (2026). [PMID: 40623620](https://pubmed.ncbi.nlm.nih.gov/40623620/). *Biol Psychiatry*. [Review / Meta-Analysis]
Firn K (2026). [PMID: 40465813](https://pubmed.ncbi.nlm.nih.gov/40465813/). *Unknown Journal*. [Epidemiology / Natural History]
Abdelhady E (2026). [PMID: 41821721](https://pubmed.ncbi.nlm.nih.gov/41821721/). *J Med Cases*. [Case Report / Case Series]
Remien K (2026). [PMID: 30969570](https://pubmed.ncbi.nlm.nih.gov/30969570/). *Unknown Journal*. [Basic Science / Preclinical]
Yamamoto K (2026). [PMID: 41485949](https://pubmed.ncbi.nlm.nih.gov/41485949/). *Circ J*. [Basic Science / Preclinical]
Carrington JM (2026). [PMID: 29493933](https://pubmed.ncbi.nlm.nih.gov/29493933/). *Unknown Journal*. [Epidemiology / Natural History]
Gaál Z (2026). [PMID: 41560547](https://pubmed.ncbi.nlm.nih.gov/41560547/). *Pediatr Blood Cancer*. [Epidemiology / Natural History]
Ogunsola HY (2026). [PMID: 41502238](https://pubmed.ncbi.nlm.nih.gov/41502238/). *Expert Rev Mol Med*. [Review / Meta-Analysis]