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Genetic and Rare Diseases Information Center (GARD)

Other Names for this Disease
  • ACH
  • Achondroplastic dwarfism
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Your Question

My sister has achondroplasia. There are no other cases in the family. My husband's family does not have a history of achondroplasia.  What are the chances of my future children having achondroplasia?

Our Answer

We have identified the following information that we hope you find helpful. If you still have questions, please contact us.

If a person has a sibling with achondroplasia, what is the chance of having a child with this condition?

Siblings of people with achondroplasia who are of average height do not have an increased risk to have a child with achondroplasia. Those who do have an increased risk to have a child with achondroplasia are people who have the condition themselves and people of average height who already have one child with achondroplasia (there is a very small chance of having more than one affected child).[1]
Last updated: 1/17/2013