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Variable frequencies of t(11;18)(q21;q21) in MALT lymphomas of different sites: significant association with CagA strains of H pyloriin gastric MALT lymphoma

Authors :
Ye, Hongtao
Liu, Hongxiang
Attygalle, Ayoma
Wotherspoon, Andrew C.
Nicholson, Andrew G.
Charlotte, Frédéric
Leblond, Veronique
Speight, Paul
Goodlad, John
Lavergne-Slove, Anne
Martin-Subero, Jose Ignacio
Siebert, Reiner
Dogan, Ahmet
Isaacson, Peter G.
Du, Ming-Qing
Source :
Blood; August 2003, Vol. 102 Issue: 3 p1012-1018, 7p
Publication Year :
2003

Abstract

t(11;18)(q21;q21) is a specific chromosomal translocation associated with mucosa-associated lymphoid tissue (MALT) lymphoma. It fuses the amino terminal of the API2gene to the carboxyl terminal of the MALT1gene and generates a chimeric fusion product. Although the translocation is frequently detected in gastric and pulmonary MALT lymphoma, its incidence in MALT lymphomas from other sites is largely unknown. It also remains unknown whether the occurrence of the translocation is influenced by the nature of preceding diseases associated with MALT lymphomas. We screened for t(11; 18)(q21;q21) in 417 cases of MALT lymphoma from 8 major sites by reverse transcription–polymerase chain reaction. t(11;18)(q21;q21) was found at highest frequencies in MALT lymphomas from the lung (38%) and stomach (24%), and at moderate frequencies in those from the conjunctiva (19%) and orbit (14%). However, the translocation was found only rarely in MALT lymphomas from the salivary gland (1%) and was absent in those from the thyroid, skin, liver, and other rare sites, and in immunoproliferative small intestinal disease (IPSID). In gastric MALT lymphoma, t(11;18)(q21;q21) was significantly associated with infection by CagA-positive strains of Helicobacter pylori. As CagA-positive strains of H pyloriare much more potent in induction of host inflammatory responses, including activation of neutrophils, which release highly genotoxic oxygen reactive species, we therefore examined neutrophil infiltration in recognized precursors of MALT lymphoma including H pylori–associated gastritis, lymphoepithelial sialadenitis, and Hashimoto thyroiditis. Neutrophil infiltration was prominent in H pylori–associated gastritis but not in lymphoepithelial sialadenitis and Hashimoto thyroiditis. Our results demonstrate that t(11;18)(q21; q21) occurs at markedly variable frequencies in MALT lymphoma of different sites and suggest that the occurrence of the translocation is influenced by the nature of premalignant diseases associated with MALT lymphoma. Oxidative damage might play a role in development of t(11;18)(q21; q21).

Details

Language :
English
ISSN :
00064971 and 15280020
Volume :
102
Issue :
3
Database :
Supplemental Index
Journal :
Blood
Publication Type :
Periodical
Accession number :
ejs56979375
Full Text :
https://doi.org/10.1182/blood-2002-11-3502