Association between SNPs in Long Non-coding RNAs and the Risk of Female Breast Cancer in a Chinese Population

Abstract

Long non-coding RNAs (LncRNAs) have been reported to be involved in tumorigenesis and tumor progression. Single nucleotide polymorphisms (SNPs) in the lncRNAs also play a vital role in carcinogenesis. The aim of this study was to assess the relationships between the four selected tagSNPs (rs944289, rs3787016, rs1456315, rs7463708) in the lncRNAs and the risk of female breast cancer in a Chinese population. A case-control study was carried out involving in a total of 439 breast cancer patients and 439 age-matched healthy controls. The genotyping was performed with Sequenom MassARRAY and the expression of estrogen receptor (ER), progesterone receptor (PR) and human epidermal growth factor receptor-2 (HER-2) in tumor tissues was measured by the immunohistochemistry (IHC) assay. We found that rs3787016 TT genotype (adjusted odds ratio (OR) = 1.62, 95% confidence interval (CI) = 1.09-2.41, P = 0.018) was associated with an increased risk of female breast cancer, especially among the patients with premenopausal status (adjusted OR = 2.55, 95% CI = 1.30-4.97, P = 0.006). Moreover, a statistically significant increased risk of the rs3787016 TT genotype was observed among the patients with advanced tumor stage (Ⅲ and Ⅳ), poor histological grade (G3-G4), positive lymph node involvement, positive expression of ER and PR and negative expression of HER-2; rs7463708 GT and GT/GG genotype were associated with decreased risk of breast cancer in the subgroup of patients with postmenopausal status (GT versus (vs.) TT: adjusted OR = 0.67, 95% CI = 0.46-0.99, P = 0.043; GT/GG vs. TT: adjusted OR = 0.68, 95% CI = 0.47-0.98, P = 0.041) and tumor late-stage (GT vs. TT: adjusted OR = 0.65, 95% CI = 0.43-0.97, P = 0.037; GT/GG vs. TT: adjusted OR = 0.65, 95% CI = 0.44-0.96, P = 0.029). In short, rs3787016 TT genotype was associated with increased breast cancer risk and clinicopathologic features of the tumor, especially among premenopausal women.

The association of POLR2E rs3787016 polymorphism and cancer risk: a Chinese case–control study and meta-analysis

“…Interestingly, Kang et al [ 10 ] and Xu et al [ 11 ] also revealed a significant association between rs3787016 with risk of esophageal cancer and breast cancer, which highlighted that POLR2E rs3787016 polymorphism might servers as a common genetic factor to affect individual susceptibility to cancer. To address this issue, for the first time, we here evaluated the association between rs3787016 and risk of liver and lung cancer.…”

NONCODEV5: a comprehensive annotation database for long non-coding RNAs

“…Functions of this relationship have been revealed in multiple disease processes, including carcinogenesis ( 40 ). For example, a study found that the TT genotype of rs3787016 was related to the risk of breast cancer and the clinicopathological features of the tumour among premenopausal women ( 41 ). To integrate the SNP information with the NONCODEv5 human transcripts, we collected lncRNA–SNP associations from LincSNP 2.0 ( 35 ).…”

Non-coding RNAs: the riddle of the transcriptome and their perspectives in cancer

“…Moreover, the dysregulation of a number of lncRNA targets, has correlated with the prognosis and diagnosis of a plenty number of cancer types including prostate cancer (141,142), lung cancer (143), and breast cancer (144)(145)(146), among other tumor types (147,148), as well as being linked to detention against chemotherapy and targeted therapy (149)(150)(151)(152). Correlation with a great number of analyses, indicates that these molecules are upregulated in cancer cells that are resistant to DNA damage inducers (153)(154)(155)(156), targeted therapies or antihormone therapies (141,(157)(158)(159).…”