Severe Combined Immunodeficiency, Autosomal Recessive, T Cell-Negative, B Cell-Negative, Nk Cell-Negative, Due to Adenosine Deaminase Deficiency, also known as partial adenosine deaminase deficiency, is related to adenosine deaminase deficiency and severe combined immunodeficiency, x-linked. An important gene associated with Severe Combined Immunodeficiency, Autosomal Recessive, T Cell-Negative, B Cell-Negative, Nk Cell-Negative, Due to Adenosine Deaminase Deficiency is ADA (Adenosine Deaminase). The drugs Busulfan and Immunosuppressive Agents have been mentioned in the context of this disorder. Affiliated tissues include bone marrow and bone, and related phenotypes are failure to thrive and motor delay