Moreover, knockdown or overexpression of LMP1 resulted in a decrease or increase in PD‐L1 and CD86 expression, respectively (Figure S8C–F, Supporting Information), which is consistent with a previous study.[38] These observations strongly suggest an immunosuppressive potential of malignant NK in NKTCL, which LMP1 further enhanced. Here, CD86 is linked to extranodal nasal NK/T cell lymphoma.