PMID- 14616961 OWN - NLM STAT- MEDLINE DCOM- 20040105 LR - 20190705 IS - 0007-1048 (Print) IS - 0007-1048 (Linking) VI - 123 IP - 4 DP - 2003 Nov TI - Mutual exclusion of t(11;18)(q21;q21) and numerical chromosomal aberrations in the development of different types of primary gastric lymphomas. PG - 590-9 AB - Gastric non-Hodgkin's lymphomas can be divided histologically into mucosa-associated lymphoid tissue (MALT) lymphoma (ML) and diffuse large cell lymphoma (DLCL) with or without evidence of preceding/accompanying ML (DLCL + ML). We studied the incidence of the most frequent structural chromosomal aberration in ML, t(11;18)(q21;q21), and numerical aberrations of seven chromosomes in 36 ML, 39 DLCL + ML and ten gastric DLCL cases, by dual-colour interphase fluorescence in situ hybridization (FISH) and reverse transcriptase polymerase chain reaction (RT-PCR). t(11;18)(q21;q21) was exclusively detected in ML (FISH 22%; RT-PCR 24%), being completely absent in DLCL + ML and DLCL. No other translocations involving 11q21 or 18q21 and other partner chromosomes were detected by FISH. In lymphomas harbouring t(11;18)(q21;q21), this translocation was the sole genetic abnormality. In contrast, 45% of the t(11;18)(q21;q21)-negative ML showed trisomies, especially of chromosome 3 and 18. In DLCL + ML with separate small and large cell components, trisomies were either detected in both components or occurred exclusively in large tumour cells. Our results suggest that ML can be divided in lymphomas characterized by the t(11;18)(q21;q21), which are unlikely to transform into high-grade tumours, and t(11;18)(q21;q21)-negative ML that may develop into DLCL + ML after the acquisition of additional genetic aberrations. FAU - Schreuder, Max I AU - Schreuder MI AD - Department of Pathology, University Medical Centre Nijmegen, Nijmegen, The Netherlands. m.schreuder@pathol.umcn.nl FAU - Hoeve, Marieke A AU - Hoeve MA FAU - Hebeda, Konnie M AU - Hebeda KM FAU - Verdijk, Marian A AU - Verdijk MA FAU - Ligtenberg, Marjolijn J AU - Ligtenberg MJ FAU - Bot, Frederik J AU - Bot FJ FAU - Chott, Andreas AU - Chott A FAU - van Krieken, J Han J M AU - van Krieken JH LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't PL - England TA - Br J Haematol JT - British journal of haematology JID - 0372544 SB - IM MH - *Chromosomes, Human, Pair 11 MH - *Chromosomes, Human, Pair 18 MH - Chromosomes, Human, Pair 3 MH - Humans MH - In Situ Hybridization, Fluorescence MH - Incidence MH - Lymphoma, B-Cell, Marginal Zone/genetics MH - Lymphoma, Non-Hodgkin/*genetics MH - Reverse Transcriptase Polymerase Chain Reaction MH - Stomach Neoplasms/genetics MH - *Translocation, Genetic MH - Trisomy EDAT- 2003/11/18 05:00 MHDA- 2004/01/06 05:00 CRDT- 2003/11/18 05:00 PHST- 2003/11/18 05:00 [pubmed] PHST- 2004/01/06 05:00 [medline] PHST- 2003/11/18 05:00 [entrez] AID - 4630 [pii] AID - 10.1046/j.1365-2141.2003.04630.x [doi] PST - ppublish SO - Br J Haematol. 2003 Nov;123(4):590-9. doi: 10.1046/j.1365-2141.2003.04630.x.