ArticleBMC cancer2010
Polymorphisms in regulatory regions of cyclooxygenase-2 gene and breast cancer risk in Brazilians: a case-control study.
Article in BMC cancer, 2010. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 15 papers, 4 of them syntheses that pooled it.
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Who cites it
15 citing papers in PubMed, 4 syntheses or guidelines pooled it, 35 citations in OpenAlex.
- Association between cyclooxygenase-2 (COX-2) 8473 T > C polymorphism and cancer risk: a meta-analysis and trial sequential analysis.BMC cancer · 2018Pooled it
- Five COX-2 gene polymorphisms and risk of breast cancer: an updated meta-analysis based on 19 case-control studies.Medical oncology (Northwood, London, England) · 2015Pooled it
- Association of the three common SNPs of cyclooxygenase-2 gene (rs20417, rs689466, and rs5275) with the susceptibility of breast cancer: an updated meta-analysis involving 34,590 subjects.Disease markers · 2014Pooled it
- Pooled it
- Genetic Variants inFrontiers in oncology · 2021Article
- Association of the cyclooxygenase-2 1759A allele with migraine in Chinese Han individuals.PloS one · 2020Article
- Review
- Single nucleotide polymorphism rs4648298 in miRNAs hsa-miR21 and hsa-miR590 binding site ofJournal of gastrointestinal oncology · 2018Article
- Functional analysis of polymorphisms in the COX-2 gene and risk of lung cancer.Molecular and clinical oncology · 2017Article
- Cyclooxygenase-2 -1195G>A (rs689466) polymorphism and cancer susceptibility: an updated meta-analysis involving 50,672 subjects.International journal of clinical and experimental medicine · 2015Article
- Cyclooxygenase-2 polymorphisms and breast cancer associated risk in Pakistani patients.Pathology oncology research : POR · 2015Article
- Lack of association between cyclooxygenase 2-765G/C gene polymorphism and breast cancer risk in Ahvaz, west-south Iran.Molecular biology reports · 2014Article
- Study of the polymorphisms of cyclooxygenase-2 (-765G>C) and 5-lipoxygenase (1708G>A) in patients with colorectal cancer.Oncology letters · 2014Article
- Lack of association between COX-2 8473T>C polymorphism and breast cancer risk: a meta-analysis.Contemporary oncology (Poznan, Poland) · 2014Article
- Functional promoter -765 G > C variant in COX-2 gene is associated with the susceptibility of breast cancer in Chinese Han women.Cancer cell international · 2014Article
Corrections and comments
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Authors and funding
5 authors at 3 institutions in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
backgroundCyclooxygenase-2 (COX-2) is up-regulated in several types of cancer, and it is hypothesized that COX-2 expression may be genetically influenced. Here, we evaluate the association between single-nucleotide polymorphisms (SNPs) in the COX-2 gene (PTGS2) and the occurrence of breast cancer among Brazilian women.
methodsThe study was conducted prospectively in two steps: First, we screened the promoter region and three fragments of the 3'-untranslated region of PTGS2 from 67 healthy Brazilians to identify SNPs and to select those with a minor allele frequency (MAF) of at least 0.10. The MAF of these selected SNPs was further characterized in 402 healthy volunteers to evaluate potential differences related to heterogeneous racial admixture and to estimate the existence of linkage disequilibrium among the SNPs. The second step was a case-control study with 318 patients and 273 controls designed to evaluate PTGS2 genotype- or haplotype-associated risk of breast cancer.
resultsThe screening analysis indicated nine SNPs with the following MAFs: rs689465 (0.22), rs689466 (0.15), rs20415 (0.007), rs20417 (0.32), rs20419 (0.015), rs5270 (0.02), rs20424 (0.007), rs5275 (0.22) and rs4648298 (0.01). The SNPs rs689465, rs689466, rs20417 and rs5275 were further studied: Their genotypic distributions followed Hardy-Weinberg equilibrium and the MAFs were not affected by gender or skin color. Strong linkage disequilibrium was detected for rs689465, rs20417 and rs5275 in the three possible pairwise combinations. In the case-control study, there was a significant increase of rs5275TC heterozygotes in cases compared to controls (OR = 1.44, 95% CI = 1.01-2.06; P = 0.043), and the haplotype formed by rs689465G, rs689466A, rs20417G and rs5275C was only detected in cases. The apparent association with breast cancer was not confirmed for rs5275CC homozygotes or for the most frequent rs5275C-containing haplotypes.
conclusionsOur results indicate no strong association between the four most frequent PTGS2 SNPs and the risk of breast cancer.
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