My 10 month old DD was originally dx in utero with CF. Her mutations are DF508 and 3849+10kbC>T. From everything I have read the 3849 mutation is absolutely a CF causing mutation. These two mutations alone should be an automatic CF dx. She is pancreatic sufficient so far, although she is not gaining at the rate the clinic would like to see (25th percentile weight for length). Stool studies have all been normal so far. She has minimal pulmonolgy symptoms but does have an occasional dry cough (daily). she has cultured staph at the last 2 clinic visits. However, when she was 3 months old the dr ordered a sweat test. Results came back in intermediate range (35-40). My clinic called and said they wanted to change her dx to CRMS. From everything I've read, if you have two CF causing mutations it is an automatic CF dx. The more I read I've learned that the 3849 mutation can also lead to lower or close to normal sweat chloride levels but still cause significant lung problems. They did a second sweat test at 6 months and the results came back slightly lower. Now the pulmonologist argues with me on her dx, saying that he doesn't agree that she has CF but will continue to treat "as if" until we can get further "evidence" that she actually has CF! He said he is only agreeing to this because I've pushed so hard against the CRMS dx, because I am terrified that if we stop all treatments now to wait and see, she could develop severe lung damage later on down the road that we could begin preventing now.
I'm hoping to get her in to another clinic in the area for a second opinion. But has anyone ever heard of this? I know there are people on these boards with these same mutations. Have you had similar issues? How were your sweat test results? Any help or information out there would be greatly appreciated.
I'm hoping to get her in to another clinic in the area for a second opinion. But has anyone ever heard of this? I know there are people on these boards with these same mutations. Have you had similar issues? How were your sweat test results? Any help or information out there would be greatly appreciated.