Mutation analysis of NF-κB signal pathway-related genes—TNFAIP3, Card11, CD79B, and Myd88, known to be frequently mutated in aggressive lymphomas [56–59]—demonstrated missense or frameshift mutations in 6% of MALT lymphoma cases in the Myd88 locus and in 28.6% of ocular adnexal MALT lymphomas mutations in the TNFAIP3 locus [49, 60, 61]. Here, NFKB1 is linked to MALT lymphoma.