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Toll-like receptor 2 and 9 genetic polymorphisms and the susceptibility to B cell Non-Hodgkin Lymphoma in Egypt

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Abstract

Non-Hodgkin lymphomas (NHL) entail considerable heterogeneity regarding their morphology, clinical course, etiological factors, or response to therapy. Increased incidence of NHL in immunocompromised individuals and after autoimmune diseases suggests that infections and immune dysregulation could play a role in the susceptibility to NHL. Accordingly, genetic variation in Toll-like receptor (TLR) genes might be considered as molecular risk factors for NHL. The aim of the current study was to investigate the possible association between genetic polymorphism of the TLRs genes and B cell NHL (B-NHL) risk in Egypt. The present study included 100 B-NHL patients and 100 healthy controls. Genotyping of TLR2-1350 T/C and TLR9-1237 T/C were done by polymerase chain reaction restricted fragment length polymorphism (PCR-RFLP) technique. The frequency of TLR2-1350 T/C polymorphic genotypes in B-NHL patients was 18 % for the heteromutant genotype (TC) and 1 % for the homomutant (CC). There was no statistical difference in the distribution of TLR2-1350 T/C genotypes between B-NHL patients and controls. As for TLR9-1237 T/C, the frequency of the heteromutant genotype (TC) was 58 % and the homomutant genotype (CC) was 1 % in B-NHL patients. Calculated risk estimation revealed that TLR9-1237 (TC) heterotype conferred almost fourfold increased risk of B-NHL (odds ratio (OR) = 3.93, 95 % confidence interval (CI) = 2.16–7.14), and the risk was higher in patients with indolent subtypes (OR = 6.64, 95 %CI = 2.31–9.08). In conclusion, the study revealed that TLR9-1237 T/C polymorphism can be considered as molecular risk factor for B-NHL among Egyptians.

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The authors declare that they have no conflict of interest.

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Authors and Affiliations

  1. Pathology Department, Faculty of Medicine, Cairo University, Cairo, Egypt

    Hala Aly Abdel Rahman, Mervat Mamdooh Khorshied & Shirihan Mahmoud Mahgoub

  2. Medical Oncology, National Cancer Institute, Cairo University, Cairo, Egypt

    Ola M. Reda Khorshid

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  1. Hala Aly Abdel Rahman
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  2. Mervat Mamdooh Khorshied
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  3. Ola M. Reda Khorshid
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  4. Shirihan Mahmoud Mahgoub
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Correspondence to Mervat Mamdooh Khorshied.

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Rahman, H.A.A., Khorshied, M.M., Khorshid, O.M.R. et al. Toll-like receptor 2 and 9 genetic polymorphisms and the susceptibility to B cell Non-Hodgkin Lymphoma in Egypt. Ann Hematol 93, 1859–1865 (2014). https://doi.org/10.1007/s00277-014-2131-z

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  • DOI: https://doi.org/10.1007/s00277-014-2131-z

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