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DF5508 in heterozytoge status

While testing for Down syndrome, the DF508 mutation was found in heterozygote status. We do not know if the parents carry any CF mutations. Can the child have CF?
Dear friend,
You mention that the DF508 CF mutation was detected in heterozygote status during the testing for Down syndrome. It is not known if the parents are carriers of a CF mutation. Was the testing for CF mutations performed for a specific reason? Is there a history of CF in the families of the parents? Which procedure was used to trace the CF mutation (e.g. trophoblast)? How many CF mutations was the fetus tested for? In order to answer your question, you need to provide the above information. The fetus must carry two CF mutations (one from each parent) in order to have CF. Generally speaking, the bigger the percentage of CF mutations a person is tested for, the smaller the chances for the person to have CF.
Yours faithfully,
Dr. Stavros Doudounakis