Supplemental XRT was delivered at two dose levels (20 and 44–50.4 Gy)

using a three-dimensional conformal technique. selleck screening library The planning target volume was inclusive of the prostate and proximal seminal vesicles plus margin. In patients with pelvic lymph node risk >10%, this volume was also inclusive of the pelvic nodal basins extending superiorly to the L5–S1 interspace (5). Among patients receiving XRT, 238 received 20 Gy and 427 received doses in the range of 44–50.4 Gy. In this same group, 452 patients were treated to the prostate only and 213 to the whole pelvis. For patients receiving 44–50.4 Gy of XRT, the mPD was 90 Gy (National Institute of Standards and Technologies 99) for 103Pd and 110 Gy (TG-43) for 125I. In those receiving 20 Gy of XRT, the boost was always delivered using 103Pd with an mPD of 115 Gy. Androgen deprivation therapy (ADT) was administered for potential pubic arch interference or adverse disease features. Two hundred seventy-five patients (29.5%) received ADT. This included 167 patients (17.9%) receiving 6 months or less of a leutinizing hormone–releasing

hormone agonist for prostate gland cytoreduction and 108 patients (11.6%) receiving >6 months of a leutinizing hormone–releasing hormone agonist and an oral antiandrogen for adverse pathologic features. In patients receiving ADT, 25 received implant alone and 250 received implant in conjunction with XRT. After brachytherapy, patients were monitored by digital I-BET-762 research buy rectal examination and serial PSA measurement at 6-month intervals. The primary end points of this analysis were bPFS, CSS, and OS. Biochemical control was defined as a PSA ≤0.40 ng/mL after nadir (13). Patients dying with either metastatic prostate cancer or castrate-resistant disease in the absence of metastases were classified as experiencing a prostate cancer–related death. Continuous and categorical variables of Glutathione peroxidase interest were

compared using an independent t test and chi-squared analysis, respectively. Comparisons in bPFS, CSS, and OS between the two study cohorts were done using the Kaplan–Meier method. Univariate Cox regression analysis was used to identify predictors of treatment outcome. Those variables with p-value <0.10 were then entered into a multivariate forward conditional Cox regression. Statistical analysis was performed with SPSS v. 13.0 software (SPSS Inc., Chicago, IL). With a median followup of 7.4 years, the 10- and 14-year bPFS, CSS, and OS for the entire Gleason 7 study group were 95.7/95.7%, 98.6/98.6%, and 77.2/64.3%, respectively. Compared with primary Gleason pattern 3, the Gleason pattern 4 patients had a statistically higher pretreatment PSA and percentage of positive biopsy cores (PPCs) (Table 1). The Gleason pattern 4 patients also received XRT more frequently and had a higher incidence and average duration of ADT use.