Expressions of Mum1 (9 of 11 tested), Bcl-6 (11 of 13 tested), CD20 (14 of 14 tested), CD43 (2 of 2 tested), and CD79a (14 of 14 tested) were detected in patients from MZL/DLBCL group. The gene discussed is SPN; the disease is marginal zone lymphoma.