Volume 184, Issue 4 pp. 570-577
Research Paper

Prognostic impact of trisomy 21 in follicular lymphoma

Takeki Mitsui

Takeki Mitsui

Department of Haematology, Gunma University Graduate School of Medicine, Maebashi, Japan

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Akihiko Yokohama

Akihiko Yokohama

Division of Blood Transfusion Service, Gunma University Hospital, Maebashi, Japan

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Hiromi Koiso

Hiromi Koiso

Department of Haematology, Gunma University Graduate School of Medicine, Maebashi, Japan

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Akio Saito

Akio Saito

Fujioka General Hospital, Fujioka, Japan

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Kohtaro Toyama

Kohtaro Toyama

Fujioka General Hospital, Fujioka, Japan

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Hiroaki Shimizu

Hiroaki Shimizu

Department of Haematology, Gunma University Graduate School of Medicine, Maebashi, Japan

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Takuma Ishizaki

Takuma Ishizaki

Department of Haematology, Gunma University Graduate School of Medicine, Maebashi, Japan

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Hiroyuki Irisawa

Hiroyuki Irisawa

Division of Haematology, Gunma Prefectural Cancer Centre, Ohta, Japan

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Makiko Takizawa

Makiko Takizawa

Department of Haematology, Gunma University Graduate School of Medicine, Maebashi, Japan

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Takayuki Saitoh

Takayuki Saitoh

Department of Laboratory Sciences, Gunma University Graduate School of Health Science, Maebashi, Japan

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Kayoko Murayama

Kayoko Murayama

Division of Haematology, Gunma Prefectural Cancer Centre, Ohta, Japan

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Morio Matsumoto

Morio Matsumoto

Division of Haematology, National Hospital Organization Shibukawa Medical Centre, Shibukawa, Japan

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Hiroshi Handa

Hiroshi Handa

Department of Haematology, Gunma University Graduate School of Medicine, Maebashi, Japan

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Junko Hirato

Junko Hirato

Department of Pathology, Gunma University Hospital, Maebashi, Japan

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Masaru Kojima

Masaru Kojima

Department of Anatomic and Diagnostic Pathology, Dokkyo University School of Medicine, Mibu, Japan

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Hirokazu Murakami

Hirokazu Murakami

Department of Laboratory Sciences, Gunma University Graduate School of Health Science, Maebashi, Japan

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Norifumi Tsukamoto

Corresponding Author

Norifumi Tsukamoto

Oncology Centre, Gunma University Hospital, Maebashi, Japan

Correspondence: Norifumi Tsukamoto, Oncology Centre, Gunma University Hospital; 3-39-22 Showa-machi, Maebashi, Gunma 371-8511, Japan.

E-mail: [email protected]

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First published: 12 November 2018
Citations: 6

Summary

The chromosomal abnormalities associated with follicular lymphoma (FL) prognosis are not fully elucidated. Here, we evaluated the pattern of chromosomal abnormalities in FL, and clarified the correlations between the cytogenetic features and clinical outcome. Cytogenetic analysis was performed using standard methods of Giemsa-banding at diagnosis for 201 FL patients admitted to our hospitals between 2001 and 2013. The identified chromosomal abnormalities were: t(14;18)(q32;q21) (59·2%), +X (17·9%), del(6)(q)/-6 (16·9%), +7 (14·4%), abnormality of 1q12-21/1q (12·9%), del(13)(q)/-13 (11·9%), abnormality of 3q27 (10·4%), abnormality of 10q22-24 (10·0%), +12/dup(12)(q) (10·0%), abnormality of 1p21-22/1p (9·0%), +18 (9·0%), del(17)(p)/-17 (5·0%), and a complex karyotype (54·7%). Patients with trisomy 21 had a significantly shorter progression-free survival (P = 0·00171) and overall survival (OS) (P < 0·001) than those without trisomy 21; additionally, patients with trisomy 21 in the rituximab-treated cohort also had a significantly shorter OS (P = 0·000428). Multivariate analysis identified trisomy 21 as an independent risk factor in our cohorts with or without t(14;18) (P = 0·015). In conclusion, the presence of trisomy 21 was an independent risk factor for in FL. Chromosomal analysis of FL patients at diagnosis can provide useful information about their expected survival.

Conflict of interest

The authors declare that they have no conflict of interest.

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