In our study, MCL samples were divided into three histological groups based on SOX11-IHC positivity: “negative” with no staining and 0% of SOX11+ cells; “light” with a weak-moderate staining and 1–39% of SOX11+ cells; and “strong” with a moderate-strong staining and ≥40% of SOX11+ cells [39]. Here, SOX11 is linked to mantle cell lymphoma.