NFKB1 and extranodal nasal NK/T cell lymphoma: Furthermore, the LMP1+ malignant NK cells showed upregulation of the JAK‐STAT and NF‐κB signaling pathways, both of which have known oncogenic functions in NKTCL[15, 32] and other cancers.[21, 33] Notably, these pathways were further boosted upon LMP1 overexpression.