Common Variable Immunodeficiency, also known as cvid, is related to immunodeficiency, common variable, 1 and immunodeficiency, common variable, 2. An important gene associated with Common Variable Immunodeficiency is TNFRSF13B (TNF Receptor Superfamily Member 13B), and among its related pathways/superpathways are ERK Signaling and Innate Immune System. The drugs Rifaximin and Budesonide have been mentioned in the context of this disorder. Affiliated tissues include t cells and b cells, and related phenotypes are chronic otitis media and recurrent respiratory infections