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Joubert syndrome with ocular defect is, along with pure JS, the most frequent subtype of Joubert syndrome and related disorders (JSRD) characterized by the neurological features of JS associated with retinal dystrophy.
Features include very common findings: Retinal dystrophy, Oculomotor apraxia, Intellectual disability, and Ataxia and others; and common findings: Long face, Nystagmus, Difficulty walking (gait disturbance), and Biparietal narrowing and others. 40 total HPO annotations.
Organ System | Phenotype Count | Example Features |
|---|---|---|
Brain and nerves | 7 | Intellectual disability, Ataxia, Global developmental delay |
Biomarker and diagnostic research for Joubert syndrome with ocular defect has been reported in the published literature.
Phenotype severity distribution: 10 very common features, 5 common features.
Estimated prevalence: Unknown (Unknown prevalence).
No clinical trials have been registered for Joubert syndrome with ocular defect.
32 publications have been identified in PubMed for Joubert syndrome with ocular defect. Research spans Case Report / Case Series (37%), Review / Meta-Analysis (27%), and Basic Science / Preclinical (23%).
Research Type | Count | % of Total |
|---|---|---|
Patient case studies | 11 | 37% |
Data assembled from 4 of 12 sources · Last updated Sep 19, 2026, 6:45 AM UTC
European rare disease database
Genetic and Rare Diseases Info Center
Common questions about Joubert syndrome with ocular defect
Eyes |
6 |
Retinal dystrophy, Oculomotor apraxia, Nystagmus |
Head and neck | 3 | Long face, Cleft palate, Orofacial cleft |
Arms and legs | 2 | Hand polydactyly, Foot polydactyly |
Bones and joints | 2 | Sideways curvature of the spine (scoliosis), Abnormal vertebral morphology |
Muscles | 1 | Low muscle tone (hypotonia) |
Lungs and breathing | 1 | Apnea |
Digestive system | 1 | Feeding difficulties |
Hormones | 1 | Abnormality of the hypothalamus-pituitary axis |
Age of onset: at birth.
Research summaries
8 |
27% |
Laboratory research | 7 | 23% |
Disease patterns and progression | 3 | 10% |
Testing and diagnosis research | 1 | 3% |
Khan AO (2026). [PMID: 41812909](https://pubmed.ncbi.nlm.nih.gov/41812909/). *J AAPOS*. [Case Report / Case Series]
Chen SC (2026). [PMID: 42083040](https://pubmed.ncbi.nlm.nih.gov/42083040/). *J Biomed Sci*. [Review / Meta-Analysis]
Boutaud L (2026). [PMID: 40841990](https://pubmed.ncbi.nlm.nih.gov/40841990/). *Clin Genet*. [Basic Science / Preclinical]
Ercoskun P (2025). [PMID: 39731278](https://pubmed.ncbi.nlm.nih.gov/39731278/). *Clin Genet*. [Epidemiology / Natural History]
Karuntu JS (2025). [PMID: 39733931](https://pubmed.ncbi.nlm.nih.gov/39733931/). *Prog Retin Eye Res*. [Review / Meta-Analysis]
Pardo LM (2025). [PMID: 41054827](https://pubmed.ncbi.nlm.nih.gov/41054827/). *Clin Genet*. [Case Report / Case Series]
Uuganbayar U (2025). [PMID: 40570958](https://pubmed.ncbi.nlm.nih.gov/40570958/). *J Biol Chem*. [Basic Science / Preclinical]
Shankar M (2025). [PMID: 40896634](https://pubmed.ncbi.nlm.nih.gov/40896634/). *Indian J Nephrol*. [Case Report / Case Series]
Betz C (2025). [PMID: 40170356](https://pubmed.ncbi.nlm.nih.gov/40170356/). *HGG Adv*. [Case Report / Case Series]
Kuroda Y (2025). [PMID: 39304719](https://pubmed.ncbi.nlm.nih.gov/39304719/). *J Hum Genet*. [Case Report / Case Series]