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Annals of Oncology 15:1091-1096, 2004
© 2004 European Society for Medical Oncology

Chromosomal abnormalities of 200 Chinese patients with non-Hodgkin's lymphoma in Taiwan: with special reference to T-cell lymphoma

Background: The distribution of the histopathological subtypes of non-Hodgkin's lymphoma (NHL) is different among various geographical areas. However, there are few reports concerning cytogenetic findings of NHL, especially T-cell lymphoma, in Asian people.

Patients and methods: We analyzed the chromosomal abnormalities of 200 adult patients with NHL in Taiwan and correlated the non-random aberrations with the histological subtypes.

Results: One hundred and thirty-eight patients (69%) had B-cell lymphoma. The incidence of the t(14;18) in total lymphoma was lower in Taiwan (12%) than in the West (20–30%), but its incidence in follicular lymphoma was comparable between the two areas (17 of 28 patients, 61% versus ~50–60%). Sixty-two patients (31%) had T-cell lymphoma, including 11 angiocentric T/natural killer (NK)-cell lymphoma and only two angioimmunoblastic T-cell lymphoma (AILD). The recurrent chromosomal abnormalities in T-cell lymphoma comprised 6q deletion (30%), 11q deletion (20%), 17p deletion (16%), –17 (16%), –Y (14%) and + 8 (11%). Angiocentric T/NK-cell lymphoma had a significantly higher frequency of 1q duplication (P=0.001), 6p duplication (P <0.001) and 11q deletion (P=0.011) than other T-cell lymphoma. The incidences of +3 and +5, two common abnormalities in AILD, were quite low in T-cell lymphoma in Taiwan (4% and 2%, respectively), compared with those in the West (16–32% and ~15%, respectively). The 11q deletion, not a common aberration in T-cell lymphoma in western countries, occurred quite frequently in Taiwan.

Conclusions: The chromosomal aberrations of NHL are quite different among various geographical areas, which may reflect the differences in the distribution of the histological subtypes of lymphoma among various areas.

C.-Y. Chen1, M. Yao1, J.-L. Tang1,2, W. Tsay1, C.-C. Wang2, W.-C. Chou1, I.-J. Su3, F.-Y. Lee3, M.-C. Liu3 and H.-F. Tien1,3,*

Departments of 1 Internal Medicine, 2 Oncology; 3 Pathology, National Taiwan University Hospital, Taipei, Taiwan

*Correspondence to: Dr H.-F. Tien, Department of Internal Medicine, National Taiwan University Hospital, No. 7, Chung-Shan South Road, Taipei 100, Taiwan. Tel: +886-2-23123456; Fax: +886-2-23959583;Email: hftd{at}ha.mc.ntu.edu.tw

Key words: chromosomal abnormalities, non-Hodgkin's lymphoma, T-cell lymphoma


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