In contrast, patients with an indolent variant of MCL [14] and other mature B-cell neoplasias such as chronic lymphocytic leukemia (CLL), follicular lymphoma (FL) or diffuse large B-cell lymphoma (DLBCL) do not express SOX11 [9], [10], [12]. The gene discussed is SOX11; the disease is B-cell chronic lymphocytic leukemia.