Question about "Borderline
I am 39 with CF and I have a younger brother, 34, who also has CF. We both have the Deltaf508 gene and were late diagnosed at the age of 18 and 15. My younger brother had a successful double lung transplant last October and my lung function is still quite good for a CFer at 73%. Recently my older brother had a son who was diagnosed at 3 months with Cystic Fibrosis also. My nephew was found to have a novel mutation Delta 3856. For some weird reason however, he did not have the Deltaf508, that my brother was a carrier for. After months of confusion by the doctors and experts, they sweat tested my older brother. Now he had borderline sweat results of I think of 52 in one arm and 57 in another. So unoffically they consider him to have CF, though they can't find his novel mutation on , though he had the extensive ambry tests. He has been the healthiest brother out of all of me and my four siblings. He can ride his bike 50 miles at a time and has not shown any signs of lung involvement. He has had some problems keeping weight on or digestive problems, but he is pretty darn healthy at the age of 41. I am hoping that the state of your child's cf will be as mild as his, if not even better. Just some info for ya.