Joubert syndrome 25
Summary
Excerpted from the GeneReview:Classic Joubert syndrome (JS) is characterized by three primary findings: A distinctive cerebellar and brain stem malformation called the molar tooth sign (MTS). Hypotonia. Developmental delays. Often these findings are accompanied by episodic tachypnea or apnea and/or atypical eye movements. In general, the breathing abnormalities improve with age, truncal ataxia develops over time, and acquisition of gross motor milestones is delayed. Cognitive abilities are variable, ranging from severe intellectual disability to normal. Additional findings can include retinal dystrophy, renal disease, ocular colobomas, occipital encephalocele, hepatic fibrosis, polydactyly, oral hamartomas, and endocrine abnormalities. Both intra- and interfamilial variation are seen.
- Full text of GeneReview (by section):
- Summary
- Diagnosis
- Clinical Characteristics
- Genetically Related Disorders
- Differential Diagnosis
- Management
- Genetic Counseling
- Resources
- Molecular Genetics
- Chapter Notes
- References
- Authors:
- Melissa Parisi
- Ian Glass
- view full author information
Available tests
26 tests are in the database for this condition.
Clinical tests (26 available)
Clinical features
Help- Abnormality of the eye
- Abnormal electroretinogram
Abnormal electroretinogram
- MedGen UID: 96908
- Concept ID: C0476397
- Finding: Finding
Abnormality of the eye
- Abnormal electroretinogram
- Abnormality of the musculoskeletal system
- Generalized hypotonia
Generalized hypotonia
- MedGen UID: 346841
- Concept ID: C1858120
- Finding: Finding
Abnormality of the musculoskeletal system
- Generalized hypotonia
- Abnormality of the nervous system
- Cerebellar ataxia
Cerebellar ataxia
- MedGen UID: 849
- Concept ID: C0007758
- Finding: Disease or Syndrome
Abnormality of the nervous system
- Cerebellar hypoplasia
Cerebellar hypoplasia
- MedGen UID: 120578
- Concept ID: C0266470
- Finding: Congenital Abnormality
Abnormality of the nervous system
- Global developmental delay
Global developmental delay
- MedGen UID: 107838
- Concept ID: C0557874
- Finding: Finding
Abnormality of the nervous system
- Molar tooth sign on MRI
Molar tooth sign on MRI
- MedGen UID: 400670
- Concept ID: C1865060
- Finding: Finding
Abnormality of the nervous system
- Oculomotor apraxia
Oculomotor apraxia
- MedGen UID: 483686
- Concept ID: C3489733
- Finding: Disease or Syndrome
Abnormality of the nervous system
- Cerebellar ataxia
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