NFKB1 and MALT lymphoma: The t(14;18) translocation occurs in 15 to 20% of MALT lymphomas, more frequently in non-gastrointestinal sites such as lung and ocular adnexa, and brings the intactMALT1 gene under the control of theIGH enhancer, resulting in deregulated expression ofMALT1 directly contributing to NF-κB activation10,54.