It is noteworthy that although the CD20-negative DLBCL included 5 cases with ALK-positive DLBCL, 2 cases with PBL, and 3 cases with DLBCL with plasmacytic differentiation, which are known for poor response and survival rates [8-14], only 2 cases with ALK-positive DLBCL died and 6 of the above-mentioned 10 DLBCL cases were alive at the time of last follow-up (the remaining 2 patients had no clinical data). The gene discussed is ALK; the disease is diffuse large B-cell lymphoma.