Hi there,
My daughter has those exact mutations. W1282X is a class one mutation, also none as a nonsense mutation. It is a very common mutation in Ashkenazi Jews. DF508 is a class 2 mutation, it is a very common mutation for CF. There is a very promising clinical trial involving those Cf'ers with the W1282X mutation using a drug called PTC124, I think it's in it's third stage clinical trial. I'm sure others have more info; you can post a question on the family section to Ambry and they may have more info. Also know there is so much more to CF than mutation alone, environment, compliance, financial, modifier genes, nutrition, come into to play.