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Hypomyelination-congenital cataract syndrome
A rare developmental defect during embryogenesis characterized by congenital or early onset cataracts (usually bilateral), developmental delay, progressive neurologic symptoms (including ataxia, spasticity and sometimes seizures) and mild-to-moderate cognitive impairment. Other major clinical features include truncal hypotonia, dysarthia, cerebellar signs (e.g: truncal titubation and intention tremor) and peripheral neuropathy (e.g: progressive weakness of the muscles in the lower limbs). Hypomyelination associated with periventricular white matter abnormalities is observed. Some patients may have mild lens opacity and cataracts could be absent.
ORPHA:85163
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