Joubert syndrome 7

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Joubert syndrome 72016-11-26T12:52:26+00:00

Joubert syndrome 7


Definition An autosomal recessive disorder (OMIM:611560) characterised by cerebellar ataxia, oculomotor apraxia, hypotonia, neonatal breathing abnormalities and psychomotor delay, retinal dystrophy and renal disease.

Imaging Cerebellar vermis demonstrates hypoplasia/aplasia, thickened and reoriented superior cerebellar peduncles, and abnormally large interpeduncular fossa, giving the appearance of a molar tooth on transaxial slices (molar tooth sign). 

Molecular pathology Defects of RPGRIP1L, which encodes a protein that may be involved in apoptosis, craniofacial development, patterning of limbs, and formation of the left-right axis, cause Joubert syndrome 7. 



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