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A member asked:
Does a child have to inherit the same mutation from both parents in order to have cystic fibrosis?
A doctor has provided 1 answer
NO: Over 2, 000 mutations in the cftr gene are known which may cause cystic fibrosis. A child must inherit one mutation from each parent to have cystic fibrosis.
Answered 5/26/2016
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Do both parents have to be cystic fibrosis gene carriers for their child to get it?
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