A similar pattern is observed for the RAG2 gene: RAG2 somatic mutations have been reported in patients with Burkitt lymphoma, mycosis fungoides-Sezary syndrome, acute lymphoblastic B-cell leukemia, DLBCL, chronic lymphocytic leukemia, small lymphocytic lymphoma, and so on. The gene discussed is RAG2; the disease is B-cell chronic lymphocytic leukemia.