It is said that 97% of CF males are infertile, to a CF male that sounds like ALL CF males! We'll that is not the case, thank the lord I am happy to say that my wife is pregnant! I have the 3849+10kbc>t mutation, this mutation has been known to NOT have fertile problems, but I didn't believe it until.... So don't loose hope, there is not a problem until there is a problem....I would love if any other CF males that have or don't have the problem would reply.ThanksFranky