4 doctors weighed in:
Whats the genetic cause of fragile x syndrome?
4 doctors weighed in

3 doctors agree
In brief: Defective gene
It is an anomaly in the long arm of the x chromosome.
Full mutations of the gene cause the fragile x syndrome.

In brief: Defective gene
It is an anomaly in the long arm of the x chromosome.
Full mutations of the gene cause the fragile x syndrome.
Dr. Josephine Ruiz-Healy
Dr. Josephine Ruiz-Healy
Thank
2 doctors agree
In brief: Genetic
Fragile x is caused by just one defective gene.
This gene also known as fmr1, shuts it self down and fails to produce a protein. The incidence is 1 in 4000 males and 1 in 6-8000 females have it is the most common cause of inherited mental disability-.

In brief: Genetic
Fragile x is caused by just one defective gene.
This gene also known as fmr1, shuts it self down and fails to produce a protein. The incidence is 1 in 4000 males and 1 in 6-8000 females have it is the most common cause of inherited mental disability-.
Dr. Josephine Ruiz-Healy
Dr. Josephine Ruiz-Healy
Thank
Get help from a real doctor now
Dr. Eric Weisman
Board Certified, Neurology
32 years in practice
9M people helped
Continue
108,000 doctors available
Read more answers from doctors