Oh wow I never heard of this and I am sorry you have suffered so long. Ours is called Alpha-1 Antitrypsin Deficiency and it affects mostly lung and liver but also many other organs in the body. Not technically autoimmune but there are similarities. All of the women with this gene in our family have lost their gallbladders. My issues are esophageal & just discovered I have a small hiatal hernia on top of severe asthma/allergies/sinus. My daughter has severe stomach pains after eating, sometimes gas & bloating. Diarrhea only sometimes. Also major sinus issues. She has been off dairy one week and I am suspecting lactose intolerance. What is the test for that? She has been allergy tested and is not celiac. As for me inflammation is my biggest problem (I get a lot of pain in neck & shoulders). I am still trying to figure out what foods cause it in me the most. Mayo Clinic is allergy testing us both end of July & very happy we are both visiting GI too. I now know how impossible it is to see GI.