I know most people are looking at Kalydeco as a medicine to increase FEV1, but to me that's only half the battle. I've seen a couple topics here concerning sputum cultures, and how Kalydeco can help eliminate the colonies of bacteria that grow in our lungs. That would be the big thing for me. I'll take a 10% improvement on my FEV1 any day, but I'd rather get the PA out, and have it stay out.