Abstract
Introduction. Joubert syndrome is a ciliopathy characterized by the presence of the molar tooth sign in magnetic resonance imaging or computed tomography. The classic involvement consists of hypotonia, neurodevelopmental delay, ataxia, oculomotor apraxia and abnormal respiratory pattern.
Development. Described for the first time in 1969, the spectrum of Joubert syndrome has expanded in recent decades based on the next-generation sequencing techniques and improvements in neuroimaging techniques. The clinical manifestations are very heterogeneous, even within the same genotype and family, and in most of the patients, neurological symptoms are combined with multisystem involvement on various levels. Diagnosis is clinical-radiological, with genetic confirmation. There is no specific treatment, and management is often complex and involves several different specialists. Conclusions. Joubert syndrome is an underdiagnosed entity, and knowledge of its clinical and radiological manifestations is essential to detect cases. The role of genetic diagnosis is key in order to offer advice to families, as well as to guide the possible evolution in certain genotypes. When it is being managed within the clinical practice, a multidisciplinary approach is necessary to approach the different areas in which these patients may present health problems.
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