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Can you test positive for 2 mutations of cystic fibrosis on one copy of a gene? I am 43 and have 2 mutations and they are testing my mother.

1 doctor weighed in

In brief: Cystic Fibrosis

It is possible to have multiple mutations for cystic fibrosis on one copy of a gene.
There are more than 1700 mutations of the cystic fibrosis gene. More about cystic fibrosis genetics via the Cystic Fibrosis Foundation: https://www.cff.org/What-is-CF/CF-Genetics/

In brief: Cystic Fibrosis

It is possible to have multiple mutations for cystic fibrosis on one copy of a gene.
There are more than 1700 mutations of the cystic fibrosis gene. More about cystic fibrosis genetics via the Cystic Fibrosis Foundation: https://www.cff.org/What-is-CF/CF-Genetics/
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