Joubert syndrome Joubert syndrome (JBTS) is characterized by hypotonia, oculomotor apraxia, nystagmus, and intellectual disability. In these patients, brain MRI reveals the pathognomonic “molar tooth sign” (MTS) with absent or hypoplastic cerebellar vermis, deepened interpenduncular fossa, and elongated superior cerebellar peduncles. The term Joubert syndrome and related disorders (JSRD) is used to describe individuals who, in addition to having the core neurological features, also have additional findings including retinal dystrophy, ocular colobomas, kidney disease, liver fibrosis, occipital encephalocele, oral hamartomas, endocrine abnormalities and polydactyly Meckel Gruber syndrome Meckel Gruber syndrome (MKS) is the most common syndromic form of neural tube defect and the classic triad of clinical features is characterized by occipital encephalocele, cystic kidneys and fibrotic changes to the liver. The clinical phenotype has since been broadened to include features such as postaxial polydactyly, skeletal dysplasia, microphthalmia, genital anomalies, cleft lip and palate, and heart defects.
Our Joubert/Meckel-Gruber Syndrome Sequencing Panel includes sequence analysis of the following 26 genes: AHI1, ARL13B, B9D1, B9D2, C5orf42, CC2D2A, CEP290, CEP41, CSPP1, INPP5E, KIF7, MKS1, NPHP1, NPHP3, PDE6D, OFD1, RPGRIP1L, TCTN1, TCTN2, TCTN3, TMEM138, TMEM216, TMEM231, TMEM237, TMEM67, TTC21B
Our Meckel-Gruber Syndrome Sequencing Panel includes sequence analysis of the following 11 genes: B9D1, B9D2, CC2D2A, CEP290, MKS1, NPHP3, RPGRIP1L, TCTN2, TMEM67, TMEM216, TMEM231.
Deletion/duplication analysis is also available for the genes on the above panels, please see our information sheet for more details.
Any gene in the Joubert/Meckel-Gruber Sequencing Panel can also be ordered individually. Please contact us directly for cost and CPT code information.