Wow - the docs think Andy has a genetic mutation versus typical Type 1. That's interesting info to get over 6 years after diagnosis! Our endo left us a voice message yesterday and I haven't gotten to speak with her yet but the gist is that Dr. Philipson's group in Chicago has identified more mutations (we sent Andy's DNA to him years and years ago but they could not identify a mutation at that time) and Andy has one of the newer mutations that they have been researching. Per endo's message, it doesn't change that he needs insulin but WOW, we may finally know what caused us to go down this crazy crazy path! Has anyone worked closely with Dr. Philipson or U of Chicago? My husband and I want to send in our DNA and I'm wondering if they would test our girls (non-d) to confirm they don't have the same mutation. Will keep you updated as we learn more.