This syndrome has characteristics of sensory and autonomic axonal neuropathy, sensorineural hearing loss and persistent global developmental delay. It has been described in four individuals from a consanguineous Lebanese family. Onset occurred in infancy with moderate developmental delay, hypotonia and areflexia. Other less constant findings included weakness, variable dysmorphic features, unsteadiness, and optic atrophy. Transmission appears to be autosomal recessive.