Severe Combined Immunodeficiency, Autosomal Recessive, T Cell-Negative, B Cell-Positive, Nk Cell-Negative, also known as severe combined immunodeficiency, autosomal recessive, t cell-negative, b cell-negative, nk cell-positive, is related to severe combined immunodeficiency with sensitivity to ionizing radiation and combined cellular and humoral immune defects with granulomas. An important gene associated with Severe Combined Immunodeficiency, Autosomal Recessive, T Cell-Negative, B Cell-Positive, Nk Cell-Negative is JAK3 (Janus Kinase 3), and among its related pathways/superpathways are RAF/MAP kinase cascade and Cytokine Signaling in Immune system. Affiliated tissues include skin and t cells, and related phenotypes are decreased circulating antibody level and decreased circulating iga level