Hi Khristina!
I thought I'd add to this discussion...
My daughter has a nonsense mutation too, (along with delta F508) and even though it is class 1, she has never had any major problems (only a toddler though) but the research on the PTC124 sounds really promising! So, you might end up even being glad to have a nonsense gene in the long run.
Also, I know that the genes really don't matter a ton, but I will tell you my mother in law is 60 with CF and doing AWESOME! VEry healthy and does not even see a CF dr. (which don't get me started how I don't really want that as a role model for Kate.) She has one Class 1 mutation and the other is unknown. So long story short, a Class 1 doesn't mean an awful case of CF at all. We are hoping Kate will end up as healthy as her grandma (seeing her good CF clinic though! <img src="i/expressions/face-icon-small-smile.gif" border="0"> )
Zoe, mom to Kate wCF