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  • Title: The multi-cancer marker, rs6983267, located at region 3 of chromosome 8q24, is associated with prostate cancer in Greek patients but does not contribute to the aggressiveness of the disease.
    Author: Papanikolopoulou A, Landt O, Ntoumas K, Bolomitis S, Tyritzis SI, Constantinides C, Drakoulis N.
    Journal: Clin Chem Lab Med; 2011 Nov 14; 50(2):379-85. PubMed ID: 22070222.
    Abstract:
    BACKGROUND: Recently, several polymorphisms located on human chromosome 8q24 were found to be associated with prostate cancer risk with different frequency and incidence among the investigated populations. The authors conducted a prostate cancer case-control study in the Greek population to evaluate the association of the single nucleotide polymorphism (SNP) rs6983267, located at region 3 of chromosome 8q24, with this type of cancer. METHODS: Samples of total blood from 86 patients with histologically confirmed prostate cancer and 99 healthy individuals were genotyped using real time polymerase chain reaction (PCR). Tumor-node-metastasis (TNM) stage, Gleason score and levels of prostate-specific antigen (PSA) at diagnosis were included in the analysis. RESULTS: A highly significant association (odds ratio=2.84 and p-value=0.002) was found between rs6983267 and prostate cancer in the Greek population. The sensitivity, specificity, negative and positive predictive values of the presence of G allele for the discrimination between patients and controls were 81.40%, 39.4%, 53.9% and 70.9%, respectively. A lower proportion of homozygotes was found in patients with PSA level <4 ng/mL compared to those with PSA level more than 4 ng/mL (p=0.019). None of the other clinical factors nor the aggressiveness of the disease were found to be significantly associated with rs6983267 genotype. CONCLUSIONS: The SNP rs6983267 is an established marker for a range of cancers. In prostate cancer, it indicates an enhanced risk for carriers to develop the disease in general. In our study it showed no association with aggressive forms or familial and early-onset prostate cancer families.
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