Joubert syndrome

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Joubert syndrome Classification and external resources
ICD-10	Q04.3
ICD-9	742.2
DiseasesDB	30688

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Joubert syndrome is a rare genetic disorder that affects the area of the brain that controls balance and coordination.

Presentation

The disorder is characterized by absence or underdevelopment of a part of the brain called the cerebellar vermis and a malformed brain stem (molar tooth sign). The most common features include ataxia (lack of muscle control), an abnormal breathing pattern called hypernea, sleep apnea, abnormal eye and tongue movements, and hypotonia. Other malformations such as extra fingers and toes, cleft lip or palate, tongue abnormalities, and seizures may also occur. There may be mild or moderate retardation.

Treatment

Treatment for Joubert syndrome is symptomatic and supportive. Infant stimulation and physical, occupational, and speech therapy may benefit some patients. Infants with abnormal breathing patterns should be monitored.

Prognosis

The prognosis for individuals with Joubert syndrome varies. Some patients have a mild form with minimal motor disability and good mental development, while others may have severe motor disability and moderate mental retardation.

Genetics

Multiple genes that are mutated in individuals with Joubert syndrome have been identified:

• Mutations in a gene of unknown function called AHI1 is associated with a subset of Joubert syndrome cases. ^[1][1]

• In some rare cases of Joubert syndrome, mutations have been found in NPHP1 which is also associated with nephronophthisis, a cystic kidney disorder. ^[1]

• The gene CEP290 has been associated with both Joubert syndrome and Leber's congenital amaurosis, type 10.^[1]

References

External links

• The Joubert Syndrome Foundation Home Page
• NINDS Joubert Syndrome Information Page
• Researchers Identify Joubert Syndrome Genes

de:Joubert-Syndrom fr:Syndrome de Joubert hu:Joubert-szindróma

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Acknowledgement and Attribution Regarding Sources of Content

Some of the initial content on this page may be incorporated in part from copyleft sources in the public domain including wikis such as Wikipedia and AskDrWiki. Drug information for patients came from the The National Library of Medicine. Infectious disease information may have come from the Centers for Disease Control (CDC). Differential Diagnoses are drawn from clinicians as well as an amalgamation of 3 sources: 1.The Disease Database; 2. Kahan, Scott, Smith, Ellen G. In A Page: Signs and Symptoms. Malden, Massachusetts: Blackwell Publishing, 2004:3; 3. Sailer, Christian, Wasner, Susanne. Differential Diagnosis Pocket. Hermosa Beach, CA: Borm Bruckmeir Publishing LLC, 2002:7 .