It will be two years in October that I have been on kalydeco. I have the G551d mutation. However, I have not benefited in terms of improved Pft's or weight. In fact, I struggle more to keep them up! Over the past year I have run a low grade fever off and on (currently I have had a fever just below 100 from mid morning til later afternoon). I have grown the same bugs (pseudo and alcalgenes) for over 20 years (I am 39) except for 2 positive rare MRSA cultures which have been clear for well over a year. Mycobacterium cultures have been negative. Recent Ct shows inflammation with enlarged likely reactive nodes no bigger than 2 cm. Of note, after I had my second child (6 months prior to staring kalydeco) I had a large pneumonia that wiped out my middle lobe. My Pft's now hang in the 60s as opposed to low 70's. If anyone has any experience or advice on this matter I would be grateful.