gp130 expression was more common in ABC‐DLBCL cases than in GCB‐DLBCL (Fig 5E), with the two subtypes being distinguished by immunohistochemistry based on the Hans classification, which takes CD10, BCL‐6, and MUM1 expression into account and is approximately 80% accurate in stratifying the two subsets (Hans et al, 2004). The gene discussed is BCL6; the disease is aneurysmal bone cyst.