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Polymorphism in IKZF1 gene affects clinical outcome in diffuse large B-cell lymphoma

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Abstract

IKZF1 encodes a transcription factor involved in B-cell maturation and differentiation. We genotyped 218 diffuse large B-cell lymphoma (DLBCL) patients and 715 unrelated controls using a TaqMan allelic discrimination assay. No statistical difference was observed in the genotype distribution of the IKZF1 rs4132601 polymorphism between DLBCL patients and controls. However, the 2-year PFS rate of patients with the IKZF1 TT genotype was 54.3% compared to 68.6% in those with the IKZF1 G+ genotypes. Moreover, the IKZF1 rs4132601 polymorphism retained its independent prognostic impact on PFS. A more pronounced effect of the IKZF1 TT genotype on PFS was detected in patients with low/intermediate low IPI-risk group. When analysis was restricted to patients with GCB-type pattern, those with the IKZF1 TT genotype achieved a lower 5-year OS rate than the patients with the IKZF1 G+ genotypes (19.6 vs. 56%). This study provides the first evidence for the association of IKZF1 variants with DLBCL outcome.

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Authors and Affiliations

Authors

Contributions

MBi, AP, MBor, WM designed the experiments. MBi, AP performed the experiments. MBi, WM, ELM analyzed the data. MBoj, ELM collected the clinical data. MBi, MBr, MBoj collected patient material. DJK, EKW, MPS, TR, KW, ELM provided material. MBi, WM, ELM carried out figures/tables preparations. MBi wrote the manuscript. WM, ELM, AP carried out revision. All authors read and approved the final manuscript.

Corresponding author

Correspondence to Wojciech Młynarski.

Ethics declarations

Ethics approval and consent to participate

All experimental procedures were approved by the Bioethics Committee of Medical University of Lodz, Poland (RNN/141/13/KE).

Conflict of interest

The authors reported no potential conflicts of interests.

Funding

This work was supported by Grant from National Science Centre (project 2013/09/N/NZ5/00822) and by Medical University of Lodz grant (project 502-03/2-159-02/502-14-195).

Additional information

The work was done in the Department of Pediatrics, Oncology, Hematology and Diabetology, Medical University of Lodz.

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Bielska, M., Borowiec, M., Jesionek-Kupnicka, D. et al. Polymorphism in IKZF1 gene affects clinical outcome in diffuse large B-cell lymphoma. Int J Hematol 106, 794–800 (2017). https://doi.org/10.1007/s12185-017-2315-0

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  • DOI: https://doi.org/10.1007/s12185-017-2315-0

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