Cystic fibrosis (CF) is a
genetic disorder. A child must inherit two defective
CF genes (one defective gene from each parent) to have the disease.
A person who has inherited only one defective CF gene is a
carrier of CF and does not have the
disease but can pass it on to his or her children. This person can also pass on
If only one parent is a carrier of a defective
CF gene, the child will not have CF. But there is a 50% (1-in-2) chance that
the child will be a CF carrier.
If both parents are carriers, there
is a 25% (1-in-4) chance that the child will have CF, and a 50% chance that the
child will be a carrier.
In this article
This information is produced and provided by the National
Institute (NCI). The information in this topic may have changed since it was written. For the most current information, contact the National
Institute via the Internet web site at http://
.gov or call 1-800-4-CANCER.
WebMD Medical Reference from Healthwise
September 09, 2014
This information is not intended to replace the advice of a doctor.
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