Ere estimated using the R q value package. Statistical Package for

Ere estimated using the R q value package. Statistical Package for the Social Sciences software version 16.0.1 (SPSS Inc., Chicago, IL) was used for other statistical analyses. A two-sided P value of #0.05 was considered statistically significant.ResultsThe study cohort consisted of 645 prostate cancer patients treated with ADT and the characteristics of patients were summarized in Table 1. The mean follow-up after ADT initiation in this cohort was 39 months (range, 3?25 months). Four hundred and forty-four patients had progressed with a median time to progression of 11967625 22 months. One hundred and sixty-two patients died, and 114 died of prostate cancer with the estimated mean times to ACM of 121 months and PCSM of 136 months. The clinical stage, Gleason score, PSA nadir, time to PSA nadir, and treatment modality were significantly associated with time to progression, PCSM, and ACM (P#0.007). Age was only associated with ACM, and the PSA at ADT initiation was associated with PCSM and ACM. A total of 18 polymorphisms in 12 genes involved in androgen and estrogen pathways were selected and genotyped (Table S1). One, 2, and 1 polymorphism achieved a P value of #0.05 for association with time to progression, PCSM, and ACM BI 10773 web respectively, according to the univariate log-rank test. Median ARCAG repeat GG918 supplier length was 22 (interquartile range, 21?4), and there was an association with time to progression (P = 0.023, falsediscovery rate q = 0.437) when analyzed as quartile groups (CAG repeat lengths ,21, 21, 22?3, .23) (Table 2). To assess the impact of AR-CAG repeat length on disease progression beyond the clinical predictors, various known variables, including age at diagnosis, clinical stage at diagnosis, Gleason score at diagnosis, PSA at ADT initiation, PSA nadir, time to PSA nadir, and treatment modality, were evaluated together using Cox proportional hazards regression model. After adjustments for these predictors, the effect of AR-CAG repeat length on disease progression was attenuated. AKR1C3 rs12529 and AR-CAG repeat length were associated with PCSM (P#0.029), and had a q value of 0.232 (Table 3). There was no association between these two polymorphisms and disease characteristics listed in Table 1 (data not shown). After adjusting for known variables, AKR1C3 rs12529 and AR-CAG repeat length remained significant predictors for PCSM in patients receiving ADT (P#0.041). A significant combined genotype effect on PCSM was also observed, and the hazard ratios (HRs) for PCSM increased as the number of unfavorable genotypes increased (HR 2.24, 95 confidence interval (CI) 1.20?.18, P for trend = 0.011, Table 3 and Figure 1 left). Furthermore, individuals carrying 2 of these polymorphisms was associated with PCSM with a HR 13.7 (95 CI 3.60?2.4, P,0.001) comparedSelection of Single Nucleotide Polymorphisms (SNPs) and GenotypingWe selected 18 polymorphisms in 12 androgen and estrogen pathway genes with functional association with cancers according to the literature review. Genomic DNA was extracted from peripheral blood of patients and stored at 280uC until the time of study. Genotyping was performed by Sequenom iPLEX matrixassisted laser desorption/ionization-time of flight mass spectrometry technology at the National Center for Genome Medicine, Academia Sinica, Taiwan. The average genotype call rate for these polymorphisms was 93.0 and each of the polymorphisms was in Hardy-Weinberg equilibrium (P.0.01). Ten percent of samples were blind duplicated for.Ere estimated using the R q value package. Statistical Package for the Social Sciences software version 16.0.1 (SPSS Inc., Chicago, IL) was used for other statistical analyses. A two-sided P value of #0.05 was considered statistically significant.ResultsThe study cohort consisted of 645 prostate cancer patients treated with ADT and the characteristics of patients were summarized in Table 1. The mean follow-up after ADT initiation in this cohort was 39 months (range, 3?25 months). Four hundred and forty-four patients had progressed with a median time to progression of 11967625 22 months. One hundred and sixty-two patients died, and 114 died of prostate cancer with the estimated mean times to ACM of 121 months and PCSM of 136 months. The clinical stage, Gleason score, PSA nadir, time to PSA nadir, and treatment modality were significantly associated with time to progression, PCSM, and ACM (P#0.007). Age was only associated with ACM, and the PSA at ADT initiation was associated with PCSM and ACM. A total of 18 polymorphisms in 12 genes involved in androgen and estrogen pathways were selected and genotyped (Table S1). One, 2, and 1 polymorphism achieved a P value of #0.05 for association with time to progression, PCSM, and ACM respectively, according to the univariate log-rank test. Median ARCAG repeat length was 22 (interquartile range, 21?4), and there was an association with time to progression (P = 0.023, falsediscovery rate q = 0.437) when analyzed as quartile groups (CAG repeat lengths ,21, 21, 22?3, .23) (Table 2). To assess the impact of AR-CAG repeat length on disease progression beyond the clinical predictors, various known variables, including age at diagnosis, clinical stage at diagnosis, Gleason score at diagnosis, PSA at ADT initiation, PSA nadir, time to PSA nadir, and treatment modality, were evaluated together using Cox proportional hazards regression model. After adjustments for these predictors, the effect of AR-CAG repeat length on disease progression was attenuated. AKR1C3 rs12529 and AR-CAG repeat length were associated with PCSM (P#0.029), and had a q value of 0.232 (Table 3). There was no association between these two polymorphisms and disease characteristics listed in Table 1 (data not shown). After adjusting for known variables, AKR1C3 rs12529 and AR-CAG repeat length remained significant predictors for PCSM in patients receiving ADT (P#0.041). A significant combined genotype effect on PCSM was also observed, and the hazard ratios (HRs) for PCSM increased as the number of unfavorable genotypes increased (HR 2.24, 95 confidence interval (CI) 1.20?.18, P for trend = 0.011, Table 3 and Figure 1 left). Furthermore, individuals carrying 2 of these polymorphisms was associated with PCSM with a HR 13.7 (95 CI 3.60?2.4, P,0.001) comparedSelection of Single Nucleotide Polymorphisms (SNPs) and GenotypingWe selected 18 polymorphisms in 12 androgen and estrogen pathway genes with functional association with cancers according to the literature review. Genomic DNA was extracted from peripheral blood of patients and stored at 280uC until the time of study. Genotyping was performed by Sequenom iPLEX matrixassisted laser desorption/ionization-time of flight mass spectrometry technology at the National Center for Genome Medicine, Academia Sinica, Taiwan. The average genotype call rate for these polymorphisms was 93.0 and each of the polymorphisms was in Hardy-Weinberg equilibrium (P.0.01). Ten percent of samples were blind duplicated for.