BACKGROUND: The relationship between inherited germ-line variations in the 5α-reductase pathways of androgen biosynthesis and the risk of biochemical recurrence (BCR) after radical prostatectomy (RP) remains an unexplored area. OBJECTIVE: To determine the link between germ-line variations in the steroid-5α-reductase, α-polypeptide 1 (SRD5A1) and steroid-5α-reductase, α-polypeptide 2 (SRD5A2) genes and BCR. DESIGN, SETTINGS, AND PARTICIPANTS: We studied retrospectively two independent cohorts composed of 526 white (25% BCR) and 320 Asian men (36% BCR) with pathologically organ-confined prostate cancer who had a median follow-up of 88.8 and 30.8 mo after surgery, respectively. MEASUREMENTS: Patients were genotyped for 19 haplotype-tagging single nucleotide polymorphisms (htSNPs) in SRD5A1 and SRD5A2 genes, and their prognostic significance on prostate-specific antigen recurrence was assessed using Kaplan-Meier analysis and the Cox regression model. RESULTS AND LIMITATIONS: After adjusting for all clinicopathologic risk factors, four SNPs (rs2208532, rs12470143, rs523349, and rs4952197) were associated with BCR in both whites and Asians. The strongest effect was conferred by the SRD5A2 V89L nonsynonymous SNP (rs523349C) with a hazard ratio (HR) of 2.87 (95% confidence interval [CI], 2.07-4.00; p = 4 × 10⁻¹⁰; 48% BCR). In addition, in whites, the combination of two SNPs, rs518673T in SRD5A1 and rs12470143A in SRD5A2, was associated with a reduced BCR rate for carriers of three or four alleles (HR: 0.37; 95% CI, 0.19-0.71; p=0.003;16% BCR) compared with noncarriers (38% BCR), whereas the SRD5A2 rs12470143A was significant in Asians (HR: 0.46; 95% CI, 0.28-0.73; p=0.001). Limitations of our study include few events of androgen-deprivation resistance or cancer-specific death. CONCLUSIONS: Our study is the first to show positive associations of several SRD5A1 and SRD5A2 variations as independent predictors of BCR after RP.
BACKGROUND: The relationship between inherited germ-line variations in the 5α-reductase pathways of androgen biosynthesis and the risk of biochemical recurrence (BCR) after radical prostatectomy (RP) remains an unexplored area. OBJECTIVE: To determine the link between germ-line variations in the steroid-5α-reductase, α-polypeptide 1 (SRD5A1) and steroid-5α-reductase, α-polypeptide 2 (SRD5A2) genes and BCR. DESIGN, SETTINGS, AND PARTICIPANTS: We studied retrospectively two independent cohorts composed of 526 white (25% BCR) and 320 Asian men (36% BCR) with pathologically organ-confined prostate cancer who had a median follow-up of 88.8 and 30.8 mo after surgery, respectively. MEASUREMENTS: Patients were genotyped for 19 haplotype-tagging single nucleotide polymorphisms (htSNPs) in SRD5A1 and SRD5A2 genes, and their prognostic significance on prostate-specific antigen recurrence was assessed using Kaplan-Meier analysis and the Cox regression model. RESULTS AND LIMITATIONS: After adjusting for all clinicopathologic risk factors, four SNPs (rs2208532, rs12470143, rs523349, and rs4952197) were associated with BCR in both whites and Asians. The strongest effect was conferred by the SRD5A2 V89L nonsynonymous SNP (rs523349C) with a hazard ratio (HR) of 2.87 (95% confidence interval [CI], 2.07-4.00; p = 4 × 10⁻¹⁰; 48% BCR). In addition, in whites, the combination of two SNPs, rs518673T in SRD5A1 and rs12470143A in SRD5A2, was associated with a reduced BCR rate for carriers of three or four alleles (HR: 0.37; 95% CI, 0.19-0.71; p=0.003;16% BCR) compared with noncarriers (38% BCR), whereas the SRD5A2 rs12470143A was significant in Asians (HR: 0.46; 95% CI, 0.28-0.73; p=0.001). Limitations of our study include few events of androgen-deprivation resistance or cancer-specific death. CONCLUSIONS: Our study is the first to show positive associations of several SRD5A1 and SRD5A2 variations as independent predictors of BCR after RP.
Authors: Douglas K Price; Cindy H Chau; Cathee Till; Phyllis J Goodman; Robin J Leach; Teresa L Johnson-Pais; Ann W Hsing; Ashraful Hoque; Howard L Parnes; Jeannette M Schenk; Catherine M Tangen; Ian M Thompson; Juergen K V Reichardt; William D Figg Journal: Cancer Date: 2016-05-10 Impact factor: 6.860
Authors: J Cheng; R P Ondracek; D C Mehedint; K A Kasza; B Xu; S Gill; G Azabdaftari; S Yao; C D Morrison; J L Mohler; J R Marshall Journal: Prostate Cancer Prostatic Dis Date: 2015-04-14 Impact factor: 5.554
Authors: Seth K Bechis; Alexander G Otsetov; Rongbin Ge; Zongwei Wang; Mark G Vangel; Chin-Lee Wu; Shahin Tabatabaei; Aria F Olumi Journal: J Urol Date: 2015-04-25 Impact factor: 7.450
Authors: David C Austin; Douglas W Strand; Harold L Love; Omar E Franco; Magdalena M Grabowska; Nicole L Miller; Omar Hameed; Peter E Clark; Robert J Matusik; Ren J Jin; Simon W Hayward Journal: Prostate Date: 2016-05-16 Impact factor: 4.104
Authors: Prevathe Poniah; Zahurin Mohamed; Yamunah Devi Apalasamy; Shamsul Mohd Zain; Shanggar Kuppusamy; Azad Ha Razack Journal: Int J Clin Exp Med Date: 2015-10-15
Authors: Tristan M Sissung; Douglas K Price; Marzia Del Re; Ariel M Ley; Elisa Giovannetti; William D Figg; Romano Danesi Journal: Biochim Biophys Acta Date: 2014-09-06