How is Fragile X Syndrome Inherited?

With a very rare exception, when the FMR1 gene is deleted, the gene mutation came from either the individual’s father or mother. However, we all don’t talk about genetics every day, so it can be a hard concept to follow. In fact – surprisingly – we still hear of doctors incorrectly stating how the gene mutation is passed down.

Additionally, once an individual or parent receives a diagnosis, talking about it with potentially affected family members can be difficult for many reasons. If this is you, we have resources to help families with a new diagnosis. We hope this quick video will help you better understand how Fragile X is inherited.

Additional Resources

• Learn more about testing and diagnosis
• See more genetics & testing webinars and videos