Bare Lymphocyte Syndrome, Type Ii, also known as mhc class ii deficiency, is related to severe combined immunodeficiency, x-linked and severe combined immunodeficiency with sensitivity to ionizing radiation. An important gene associated with Bare Lymphocyte Syndrome, Type Ii is RFXANK (Regulatory Factor X Associated Ankyrin Containing Protein), and among its related pathways/superpathways are Cytokine Signaling in Immune system and NF-kappaB Signaling. 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 reduced mhc ii surface expression and recurrent respiratory infections