Abstract
BackgroundCoffin-Lowry syndrome is a rare X-linked disease, caused by loss-of-function mutations in the RPS6KA3 gene. Patients exhibit severe intellectual disability with characteristic dysmorphism. As there are no specific laboratory findings to support the diagnosis of Coffin-Lowry syndrome, it may be difficult to diagnose—especially in young children, where the characteristic craniofacial features are less discernible. CaseHere we report on a 2-year-old boy with Coffin-Lowry syndrome with a novel missense mutation in the RPS6KA3 gene. On magnetic resonance imaging, his brain exhibited periventricular signal abnormalities with multiple small cystic lesions. These findings may aid in diagnosis of Coffin-Lowry syndrome.
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