A member asked:

Can you tell me what you suggest if you are a carrier of fragile x, will your son have higher chances of down syndrome?

A doctor has provided 1 answer

Unrelated: Fragile x and Down syndrome are unrelated conditions. Down syndrome is due to an extra copy of chromosome 21, most typically trisomy 21. Most cases of fragile x are due to a mutation of the fmr1 gene which is located on the x chromosome.

Answered 2/18/2015

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