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Volume 3 Supplement 1

Abstracts of the Breast Cancer Immunotherapy Symposium (BRECIS): Sidra Symposia Series

Haplotypes of SNPs associated with COX-2 and their comparison with histopathological features of breast cancer patients

Introduction

In breast cancer, increased cyclooxygenase-2 expressions is associated with poor prognosis. COX-2 expression influences production of pro-inflammatory prostaglandins. The present study investigated association between COX-2 promoter polymorphisms (rs689465, rs689466, rs20417) and histopathological features of breast cancer patients.

Methods

We selected 150 HER-2 amplification positive breast cancer patients from our previous case-control study. The participants were evaluated for histopathological features and genotyped for COX-2 SNPs. Comparisons of genotype data with histopathological characteristics were performed by chi square test. Logistic regression was applied for estimation of odd ratios. COX-2 protein level and other markers were assessed by immunohistochemical staining. Statistical analyses were performed using SPSS version 19.0 and p value was set at <0.05.

Results

Our data showed that elevated COX-2 expression was significantly associated with HER-2 amplified tumours. In addition, a positive association between rs20417 (GC+CC) and estrogens receptor (OR: 0.383, 0.161-0.913, P: 0.030) and IDC tumour (OR: 0.264, 0.070-0.993, P: 0.049) was noted. Eight haplotypes were deduced and associations with tumour size (P: 0.030), HER-2 amplification (P: < 0.0001), ER positivity (P: 0.017) were observed.

Conclusion

Present study suggests that COX-2 expression and haplotypes of its associated SNPs should be considered for characterizing breast cancer prognosis.

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Correspondence to Tariq Moatter.

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Aban, M., Siddqui, I., Saboor, M. et al. Haplotypes of SNPs associated with COX-2 and their comparison with histopathological features of breast cancer patients. j. immunotherapy cancer 3, P9 (2015). https://doi.org/10.1186/2051-1426-3-S1-P9

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Keywords

  • Breast Cancer
  • Breast Cancer Patient
  • Promoter Polymorphism
  • Positive Breast Cancer
  • Cancer Prognosis