👉 The term "keelback" refers to a rare genetic disorder that affects the lining of the small intestine. This condition is caused by mutations in a gene called HLA, which is responsible for recognizing and responding to antigens (molecules) found on certain surfaces in food. The mutation can result in an immune response that destroys healthy cells located near this surface, leading to inflammation and damage. The exact cause of keelback is not fully understood, but it is thought to be caused by
