A member asked:

My son was recently tested for fragile x syndrome. how rare or common is fragile x?

A doctor has provided 1 answer
Dr. Jay Park answered

1 in 4000-6000 male: Fragile x syndrome is the most common inherited form of intellectual disability, affecting 1 per 4000-6000 male.

Answered 4/30/2016

5.9k views

Thank

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