My son has this mutation. His other one is W1282X. I tried to research it a few years ago. It seems that it can be a more mild mutation. But I also read that it can depend on what mutation it is paired with. In my son's case he seem to have more classic symptom. He is 7 and is pancreatic insufficient, cultures staph A., and has sinus problems. Never been hospitalized. Also his sweat test was 100.
One article I found stated that this mutation is much more common then previously thought and SHOULD be added to the short list of mutations tested for.
Take Care,
Lisa, mom to 3 kids, 1 w/cf.