What is fragile X syndrome?

Fragile X Syndrome is the most common inherited form of intellectual disability, and the most common known genetic cause of autism spectrum disorders. It affects an estimated 12,000–15,000 people in the UK.

The condition is the result of a genetic mutation and takes its name from the ‘fragile’ appearance of the X chromosome on which this gene resides.

The disorder can cause severe learning difficulties, language impairment and sensory hypersensitivity. It can also cause behavioural symptoms such as anxiety, attentional difficulties and hyperactivity.


Useful links

The Fragile X Society

The National Autistic Society