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CVID - Patients are at risk for developing a number of GI tract pathologies including lymphoid nodular hyperplasia and inflammatory bowel disease. An enteropathy with villous blunting (resembling celiac disease) may be present but does not respond to dietary gluten removal. The risk of developing GI tract malignancies (lymphoma, adenocarcinoma) is increased 50 fold.y.
PIK3CD Gain of Function - patients develop autoimmune manifestations including inflammatory bowel disease, autoimmune cytopenia, and autoimmune primary sclerosing cholangitis. Patients may also develop EBV/CMV induced lymphoproliferation, hepatosplenomegaly and malignancy (lymphoma).
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