Assertion: cystic fibrosis's parent | /r/HasProperty | carriers of a cftr mutation
Facets:
Source sentences:
text: However, if two parents are carriers of a CFTR mutation, there is a 25% chance that the child will be born with cystic fibrosis.
text: If testing shows that parent is a CFTR gene mutation carrier, the other parent is tested to calculate the risk that their children will have CF.
text: Sweat tests will be used if both parents are known to be carriers of mutated CFTR genes.