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Prediction of prostate cancer from prostate biopsy in Chinese men using a genetic score derived from 24 prostate cancer risk‐associated SNPs
Author(s) -
Jiang Haowen,
Liu Fang,
Wang Zhong,
Na Rong,
Zhang Limin,
Wu Yishuo,
Zheng Jie,
Lin Xiaoling,
Jiang Deke,
Sun Jielin,
Zheng S. Lilly,
Ding Qiang,
Xu Jianfeng
Publication year - 2013
Publication title -
the prostate
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.295
H-Index - 123
eISSN - 1097-0045
pISSN - 0270-4137
DOI - 10.1002/pros.22661
Subject(s) - prostate cancer , medicine , prostate biopsy , prostate , single nucleotide polymorphism , biopsy , prostate specific antigen , urology , cancer , oncology , gynecology , genotype , biology , gene , biochemistry
BACKGROUND Twenty‐four prostate cancer (PCa) risk‐associated single nucleotide polymorphisms (SNPs) in Chinese men have been cataloged. We evaluated whether these SNPs can independently predict outcomes of prostate biopsy, and improve the predictive performance of existing clinical variables. METHODS Three hundred eight consecutive patients that underwent prostate biopsy for detection of PCa at Huashan Hospital, Shanghai, China between April 2011 and August 2012 were recruited. Clinical variables such as serum prostate‐specific antigen (PSA) levels and peripheral blood samples were collected prior to a 10‐core biopsy. A genetic score based on these 24 PCa associated SNPs was calculated for each individual. RESULTS Among 308 patients underwent prostate biopsy, 141 (45.8%) were diagnosed with PCa. Genetic score was significantly higher in patients with PCa (median = 1.30) than without (median = 0.89), P = 3.81 × 10 −6 . The difference remained significant after adjusting for age and total PSA, P = 0.007. The PCa detection rate increased with increasing genetic score; 26.3%, 43.2%, and 60.0% for men with lower (<0.5), average (0.5–1.5), and higher (>1.5) genetic score, respectively, P ‐trend = 0.0003. For patients with moderately elevated PSA levels (1.6–20 ng/ml), the PCa detection rate was 31.2% overall and was 16.7%, 31.2%, and 40.9% for men with lower (<0.5), average (0.5–1.5), and higher (>1.5) genetic score, respectively, P ‐trend = 0.03. For patients with PSA ≥ 20 ng/ml, however, the PCa detection rates were high (>69%) regardless of genetic score. CONCLUSION A genetic score based on PCa risk‐associated SNPs is an independent predictor of prostate biopsy outcomes in Chinese men and may be helpful to determine the need for prostate biopsy among patients within a “gray zone” of PCa risk. Prostate 73: 1651–1659, 2013 . © 2013 Wiley Periodicals, Inc.