Known cancer-associated immune disorders include Ataxia-telangiectasia (acute lymphocytic leukemia [ALL], brain tumors, gastric cancer) Wiskott-Aldrich syndrome (lymphoma, ALL) X-linked agammaglobulinemia (lymphoma, ALL) Immune deficiency resulting from immune-suppressing drugs or HIV infection (lymphoma, kidney cancer, melanoma, cervical cancer, head and neck cancer, Kaposi sarcoma) Autoimmune disorders such as systemic lupus erythematosus, rheumatoid arthritis, and Sjögren syndrome (B-cell lymphoma)