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Although cause and effect has not been established for most of these infectious agents, our understanding of the biology has significantly improved, in part through the application of standard cytogenetic analyses. The common karyotypic alterations that characterize MALT lymphomas include the trisomies 3 and 18, the translocations t(11;18)(q21;q21), t(1;14)(p22;q32), t(14;18)(q32;q21), t(3;14)(q27;q32), and the recently described t(3;14)(p14.1;q32). This apparent complexity of cytogenetic alterations that have now been implicated in the pathogenesis of extranodal MALT lymphoma serves as a paradigm for molecular cross talk in neoplastic disease. Recent data have shown that at least three of the disparate translocations affect a common signaling mechanism, and thus unify all three under a common pathogenesis, resulting in the constitutive activation of the nuclear factor kappa B (NF-\u03baB) pathway. It may be that the new MALT-related translocation involving the FOXP1 gene and other as yet undiscovered translocations may all have in common increased NF-\u03baB signaling.<\/jats:p>","DOI":"10.1200\/jco.2005.05.011","type":"journal-article","created":{"date-parts":[[2005,9,9]],"date-time":"2005-09-09T04:07:52Z","timestamp":1126238872000},"page":"6370-6378","source":"Crossref","is-referenced-by-count":150,"title":["Molecular Pathogenesis of Mucosa-Associated Lymphoid Tissue Lymphoma"],"prefix":"10.1200","volume":"23","author":[{"given":"Pedro","family":"Farinha","sequence":"first","affiliation":[{"name":"From the British Columbia Cancer Agency and the University of British Columbia Department of Pathology, Vancouver, British Columbia, Canada"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Randy D.","family":"Gascoyne","sequence":"additional","affiliation":[{"name":"From the British Columbia Cancer Agency and the University of British Columbia Department of Pathology, Vancouver, British Columbia, Canada"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"233","reference":[{"key":"BIB1","doi-asserted-by":"publisher","DOI":"10.1002\/1097-0142(19831015)52:8<1410::AID-CNCR2820520813>3.0.CO;2-3"},{"key":"BIB2","doi-asserted-by":"publisher","DOI":"10.1182\/blood.V89.11.3909"},{"key":"BIB3","doi-asserted-by":"publisher","DOI":"10.1136\/jcp.48.5.395"},{"key":"BIB4","doi-asserted-by":"publisher","DOI":"10.1111\/j.1600-0560.1997.tb01318.x"},{"key":"BIB5","doi-asserted-by":"publisher","DOI":"10.1093\/jnci\/djh102"},{"key":"BIB6","doi-asserted-by":"publisher","DOI":"10.1056\/NEJMp038200"},{"key":"BIB7","doi-asserted-by":"publisher","DOI":"10.1038\/modpathol.3800302"},{"key":"BIB8","doi-asserted-by":"publisher","DOI":"10.1002\/ijc.20205"},{"key":"BIB9","doi-asserted-by":"publisher","DOI":"10.1097\/00004836-200404000-00011"},{"key":"BIB10","doi-asserted-by":"publisher","DOI":"10.1136\/ard.55.5.311"},{"key":"BIB11","doi-asserted-by":"publisher","DOI":"10.1158\/1078-0432.CCR-0873-03"},{"key":"BIB12","doi-asserted-by":"publisher","DOI":"10.1182\/blood.V88.12.4445.bloodjournal88124445"},{"key":"BIB13","unstructured":"Du M, Diss TC, Xu C, et al: Ongoing mutation in MALT lymphoma immunoglobulin gene suggests that antigen stimulation plays a role in the clonal expansion. 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