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Features include always present findings: Global developmental delay and Retinal dystrophy; and common findings: Occipital encephalocele, Joint contracture of the 5th finger, and Overweight. 13 total HPO annotations.
Organ System | Phenotype Count | Example Features |
|---|---|---|
Eyes | 2 | Oculomotor apraxia, Retinal dystrophy |
TMEM218 function has not been fully characterized.
Joubert syndrome 39 is associated with mutations in the TMEM218 gene on chromosome 11.
Genetic testing for TMEM218 is available. Testing is considered confirmatory for diagnosis.
Phenotype severity distribution: 2 always present features, 3 common features.
No clinical trials have been registered for Joubert syndrome 39.
2 publications have been identified in PubMed for Joubert syndrome 39. Research spans Review / Meta-Analysis (50%) and Basic Science / Preclinical (50%).
Yang M (2025). [PMID: 40059580](https://pubmed.ncbi.nlm.nih.gov/40059580/). *Journal of clinical laboratory analysis*. [Basic Science / Preclinical]
Wolf MTF (2024). [PMID: 37930417](https://pubmed.ncbi.nlm.nih.gov/37930417/). *Pediatric nephrology (Berlin, Germany)*. [Review / Meta-Analysis]
Data assembled from 5 of 12 sources · Last updated Sep 19, 2026, 2:52 PM UTC
Online Mendelian Inheritance in Man
Common questions about Joubert syndrome 39
Brain and nerves
1 |
Global developmental delay |
Heart and blood vessels | 1 | Hypoplastic left heart |
Bones and joints | 1 | Joint contracture of the 5th finger |
Muscles | 1 | Joint contracture of the 5th finger |
Arms and legs | 1 | Joint contracture of the 5th finger |
Kidneys and urinary system | 1 | Polycystic kidney dysplasia |
Age of onset: before birth.