Polymorphisms in the AR and PSA genes as markers of susceptibility and aggressiveness in prostate cancer

Cancer Investigation
Hellen KuasneIlce Mara de Syllos Cólus

Abstract

The study of genes involved in androgen pathway can contribute to a better knowledge of prostate cancer. Our aim was to examine if polymorphisms in prostate-specific antigen (PSA) and androgen receptor (AR) genes were involved in prostate cancer risk and aggressiveness. Genotypes were determined by PCR-RFLP (PSA) or using a 377 ABI DNA Sequencer (AR). PSA(G/G) genotype (OR = 1.78, 95% CI = 1.06–2.99) and AR short CAG repeats (OR = 1.89, 95% CI = 1.21–2.96) increased risk for prostate cancer and were related with tumor aggressiveness. About 38.3% of tumors showed microsatellite instability. In conclusion, polymorphisms in these genes may be indicated as potential biomarkers for prostate cancer.

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