Combined Immunodeficiency, X-Linked, also known as xcid, is related to severe combined immunodeficiency, x-linked and severe combined immunodeficiency. An important gene associated with Combined Immunodeficiency, X-Linked is IL2RG (Interleukin 2 Receptor Subunit Gamma). The drugs gamma-Globulins and Immunoglobulin G have been mentioned in the context of this disorder. Affiliated tissues include bone marrow and t cells, and related phenotypes are sinusitis and otitis media