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Oh JH, Lee S, Thor M, Rosenstein BS, Tannenbaum A, Kerns S, Deasy JO. Predicting the germline dependence of hematuria risk in prostate cancer radiotherapy patients. Radiother Oncol 2023; 185:109723. [PMID: 37244355 PMCID: PMC10524941 DOI: 10.1016/j.radonc.2023.109723] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/24/2022] [Revised: 05/09/2023] [Accepted: 05/17/2023] [Indexed: 05/29/2023]
Abstract
BACKGROUND AND PURPOSE Late radiation-induced hematuria can develop in prostate cancer patients undergoing radiotherapy and can negatively impact the quality-of-life of survivors. If a genetic component of risk could be modeled, this could potentially be the basis for modifying treatment for high-risk patients. We therefore investigated whether a previously developed machine learning-based modeling method using genome-wide common single nucleotide polymorphisms (SNPs) can stratify patients in terms of the risk of radiation-induced hematuria. MATERIALS AND METHODS We applied a two-step machine learning algorithm that we previously developed for genome-wide association studies called pre-conditioned random forest regression (PRFR). PRFR includes a pre-conditioning step, producing adjusted outcomes, followed by random forest regression modeling. Data was from germline genome-wide SNPs for 668 prostate cancer patients treated with radiotherapy. The cohort was stratified only once, at the outset of the modeling process, into two groups: a training set (2/3 of samples) for modeling and a validation set (1/3 of samples). Post-modeling bioinformatics analysis was conducted to identify biological correlates plausibly associated with the risk of hematuria. RESULTS The PRFR method achieved significantly better predictive performance compared to other alternative methods (all p < 0.05). The odds ratio between the high and low risk groups, each of which consisted of 1/3 of samples in the validation set, was 2.87 (p = 0.029), implying a clinically useful level of discrimination. Bioinformatics analysis identified six key proteins encoded by CTNND2, GSK3B, KCNQ2, NEDD4L, PRKAA1, and TXNL1 genes as well as four statistically significant biological process networks previously shown to be associated with the bladder and urinary tract. CONCLUSION The risk of hematuria is significantly dependent on common genetic variants. The PRFR algorithm resulted in a stratification of prostate cancer patients at differential risk levels of post-radiotherapy hematuria. Bioinformatics analysis identified important biological processes involved in radiation-induced hematuria.
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Affiliation(s)
- Jung Hun Oh
- Department of Medical Physics, Memorial Sloan Kettering Cancer Center, New York, NY, United States.
| | - Sangkyu Lee
- Department of Medical Physics, Memorial Sloan Kettering Cancer Center, New York, NY, United States
| | - Maria Thor
- Department of Medical Physics, Memorial Sloan Kettering Cancer Center, New York, NY, United States
| | - Barry S Rosenstein
- Department of Radiation Oncology, Icahn School of Medicine at Mount Sinai, New York, NY, United States
| | - Allen Tannenbaum
- Departments of Computer Science and Applied Mathematics & Statistics, Stony Brook University, Stony Brook, NY, United States
| | - Sarah Kerns
- Department of Radiation Oncology, Medical College of Wisconsin, Milwaukee, WI, United States
| | - Joseph O Deasy
- Department of Medical Physics, Memorial Sloan Kettering Cancer Center, New York, NY, United States
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González-San Segundo C, Gómez-Iturriaga A, Couñago F. Are all prostate cancer patients "fit" for salvage radiotherapy? World J Clin Oncol 2020; 11:1-10. [PMID: 31976305 PMCID: PMC6935690 DOI: 10.5306/wjco.v11.i1.1] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/04/2019] [Revised: 11/13/2019] [Accepted: 11/19/2019] [Indexed: 02/06/2023] Open
Abstract
The indication for salvage radiotherapy (RT) (SRT) in patients with biochemically-recurrent prostate cancer after surgery is based on prostate-specific antigen (PSA) levels at the time of biochemical recurrence. Although there are clear criteria (pT3-pT4 disease and/or positive margins) for the use of adjuvant radiotherapy, no specific clinical or tumour-related criteria have yet been defined for SRT. In retrospective series, 5-year biochemical progression-free survival (PFS) ranges from 35%-85%, depending on the PSA level at the start of RT. Two phase 3 trials have compared SRT with and without androgen deprivation therapy (ADT), finding that combined treatment (SRT+ADT) improves both PFS and overall survival. Similar to adjuvant RT, the indication for ADT is based on tumour-related factors such as PSA levels, tumour stage, and surgical margins. The number of patients referred to radiation oncology departments for SRT continues to rise. In the present article, we define the clinical, therapeutic, and tumour-related factors that we believe should be evaluated before prescribing SRT. In addition, we propose a decision algorithm to determine whether the patient is fit for SRT. This algorithm will help to identify patients in whom radiotherapy is likely to improve survival without significantly worsening quality of life.
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Affiliation(s)
| | | | - Felipe Couñago
- Department of Radiation Oncology, Hospital Universitario Quirónsalud Madrid, Madrid 28003, Spain
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Daoud MA, Aboelnaga EM, Alashry MS, Fathy S, Aletreby MA. Clinical outcome and toxicity evaluation of simultaneous integrated boost pelvic IMRT/VMAT at different dose levels combined with androgen deprivation therapy in prostate cancer patients. Onco Targets Ther 2017; 10:4981-4988. [PMID: 29066917 PMCID: PMC5644603 DOI: 10.2147/ott.s141224] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
Background The role of dose escalation in patients receiving long-term androgen deprivation therapy (ADT) is still a controversial issue. The aim of the current study was to evaluate whether dose escalation for ≥76–80 Gy had any advantage in terms of biochemical disease-free survival (BDFS), distant metastasis-free survival (DMFS), or overall survival outcomes over the dose levels from 70 to <76 Gy. Patients and methods The study included a cohort of 24 patients classified with high- and intermediate-risk localized prostate cancer. All patients received ADT, starting at 4–6 months before radiation therapy and continued for a total period of 12–24 months in high-risk patients. The treatment plan was given in two phases. In the first phase, the nodal planning target volume (PTV) and the prostate PTV received 48.6 and 54 Gy, respectively, over 27 fractions. The treatment was applied through intensity-modulated radiation therapy or volumetric modulated arc therapy with a simultaneous integrated boost technique. Results More than half of the patients were in T3–T4 stage, 79.1% of the patients were in the high-risk category, and all patients received ADT. The rate of acute grade II gastrointestinal and genitourinary toxicities in all patients were 41.7% and 62.5%, respectively. The rate of freedom from grade II rectal toxicity at 2 years was 89% and 83% for patients treated with dose levels <76 and ≥76 Gy, respectively. The rate of BDFS at 2 years was 90% and 85% for doses <76 and ≥76 Gy, respectively. The DMFS at 2 years was 100% and 76% for dose levels <76 and ≥76 Gy, respectively. Conclusion In the current study, there were no significant differences in the BDFS and DMFS between patients treated with a dose of <76 and ≥76 Gy, including elective pelvic lymph nodes irradiation combined with ADT.
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Affiliation(s)
- Mohamed A Daoud
- Department of Clinical Oncology and Nuclear Medicine, Mansoura Faculty of Medicine, Mansoura University, Mansoura.,Department of Oncology, Fakeeh Hospital, Jeddah, Saudi Arabia
| | - Engy M Aboelnaga
- Department of Clinical Oncology and Nuclear Medicine, Mansoura Faculty of Medicine, Mansoura University, Mansoura
| | - Mohamed S Alashry
- Department of Clinical Oncology and Nuclear Medicine, Mansoura Faculty of Medicine, Mansoura University, Mansoura
| | - Salwa Fathy
- Department of Radiation, Oncology and Nuclear Medicine, South Egypt Cancer Institute, Assiut University, Assiut
| | - Mostafa A Aletreby
- Department of Oncology, Fakeeh Hospital, Jeddah, Saudi Arabia.,Department of Medical Physics, Kasr Alainy Faculty of Medicine, Al Manial, Egypt
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4
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Reduced late urinary toxicity with high-dose intensity-modulated radiotherapy using intra-prostate fiducial markers for localized prostate cancer. Clin Transl Oncol 2017; 19:1161-1167. [DOI: 10.1007/s12094-017-1655-9] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2017] [Accepted: 03/24/2017] [Indexed: 12/25/2022]
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Shakespeare TP, Wilcox SW, Aherne NJ. Can we avoid high levels of dose escalation for high-risk prostate cancer in the setting of androgen deprivation? Onco Targets Ther 2016; 9:2819-24. [PMID: 27274277 PMCID: PMC4869660 DOI: 10.2147/ott.s105174] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/03/2022] Open
Abstract
Aim Both dose-escalated external beam radiotherapy (DE-EBRT) and androgen deprivation therapy (ADT) improve outcomes in patients with high-risk prostate cancer. However, there is little evidence specifically evaluating DE-EBRT for patients with high-risk prostate cancer receiving ADT, particularly for EBRT doses >74 Gy. We aimed to determine whether DE-EBRT >74 Gy improves outcomes for patients with high-risk prostate cancer receiving long-term ADT. Patients and methods Patients with high-risk prostate cancer were treated on an institutional protocol prescribing 3–6 months neoadjuvant ADT and DE-EBRT, followed by 2 years of adjuvant ADT. Between 2006 and 2012, EBRT doses were escalated from 74 Gy to 76 Gy and then to 78 Gy. We interrogated our electronic medical record to identify these patients and analyzed our results by comparing dose levels. Results In all, 479 patients were treated with a 68-month median follow-up. The 5-year biochemical disease-free survivals for the 74 Gy, 76 Gy, and 78 Gy groups were 87.8%, 86.9%, and 91.6%, respectively. The metastasis-free survivals were 95.5%, 94.5%, and 93.9%, respectively, and the prostate cancer-specific survivals were 100%, 94.4%, and 98.1%, respectively. Dose escalation had no impact on any outcome in either univariate or multivariate analysis. Conclusion There was no benefit of DE-EBRT >74 Gy in our cohort of high-risk prostate patients treated with long-term ADT. As dose escalation has higher risks of radiotherapy-induced toxicity, it may be feasible to omit dose escalation beyond 74 Gy in this group of patients. Randomized studies evaluating dose escalation for high-risk patients receiving ADT should be considered.
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Affiliation(s)
- Thomas P Shakespeare
- Department of Radiation Oncology, North Coast Cancer Institute, University of New South Wales, Coffs Harbour, NSW, Australia; Rural Clinical School, Faculty of Medicine, University of New South Wales, Coffs Harbour, NSW, Australia
| | - Shea W Wilcox
- Department of Radiation Oncology, North Coast Cancer Institute, University of New South Wales, Coffs Harbour, NSW, Australia
| | - Noel J Aherne
- Department of Radiation Oncology, North Coast Cancer Institute, University of New South Wales, Coffs Harbour, NSW, Australia; Rural Clinical School, Faculty of Medicine, University of New South Wales, Coffs Harbour, NSW, Australia
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Shakespeare TP, Wilcox SW, Aherne NJ. Can we avoid dose escalation for intermediate-risk prostate cancer in the setting of short-course neoadjuvant androgen deprivation? Onco Targets Ther 2016; 9:1635-9. [PMID: 27073327 PMCID: PMC4806761 DOI: 10.2147/ott.s102327] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
Background Both dose-escalated external beam radiotherapy (DE-EBRT) and androgen deprivation therapy (ADT) improve the outcomes in patients with intermediate-risk prostate cancer. Despite this, there are only few reports evaluating DE-EBRT for patients with intermediate-risk prostate cancer receiving neoadjuvant ADT, and virtually no studies investigating dose escalation >74 Gy in this setting. We aimed to determine whether DE-EBRT >74 Gy improved the outcomes for patients with intermediate-risk prostate cancer who received neoadjuvant ADT. Findings In our institution, patients with intermediate-risk prostate cancer were treated with neoadjuvant ADT and DE-EBRT, with doses sequentially increasing from 74 Gy to 76 Gy and then to 78 Gy between 2006 and 2012. We identified 435 patients treated with DE-EBRT and ADT, with a median follow-up of 70 months. For the 74 Gy, 76 Gy, and 78 Gy groups, five-year biochemical disease-free survival rates were 95.0%, 97.8%, and 95.3%, respectively; metastasis-free survival rates were 99.1%, 100.0%, and 98.6%, respectively; and prostate cancer-specific survival rate was 100% for all three dose levels. There was no significant benefit for dose escalation either on univariate or multivariate analysis for any outcome. Conclusion There was no benefit for DE-EBRT >74 Gy in our cohort of intermediate-risk prostate cancer patients treated with neoadjuvant ADT. Given the higher risks of toxicity associated with dose escalation, it may be feasible to omit dose escalation in this group of patients. Randomized studies evaluating dose de-escalation should be considered.
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Affiliation(s)
- Thomas P Shakespeare
- Department of Radiation Oncology, North Coast Cancer Institute, The University of New South Wales, Coffs Harbour, New South Wales, Australia; Faculty of Medicine, Rural Clinical School, The University of New South Wales, Coffs Harbour, New South Wales, Australia
| | - Shea W Wilcox
- Department of Radiation Oncology, North Coast Cancer Institute, The University of New South Wales, Coffs Harbour, New South Wales, Australia
| | - Noel J Aherne
- Department of Radiation Oncology, North Coast Cancer Institute, The University of New South Wales, Coffs Harbour, New South Wales, Australia; Faculty of Medicine, Rural Clinical School, The University of New South Wales, Coffs Harbour, New South Wales, Australia
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Gurka MK, Chen LN, Bhagat A, Moures R, Kim JS, Yung T, Lei S, Collins BT, Krishnan P, Suy S, Dritschilo A, Lynch JH, Collins SP. Hematuria following stereotactic body radiation therapy (SBRT) for clinically localized prostate cancer. Radiat Oncol 2015; 10:44. [PMID: 25890265 PMCID: PMC4358866 DOI: 10.1186/s13014-015-0351-6] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2014] [Accepted: 02/04/2015] [Indexed: 11/16/2022] Open
Abstract
BACKGROUND Hematuria following prostate radiotherapy is a known toxicity that may adversely affect a patient's quality of life. Given the higher dose of radiation per fraction using stereotactic body radiation therapy (SBRT) there is concern that post-SBRT hematuria would be more common than with alternative radiation therapy approaches. Herein, we describe the incidence and severity of hematuria following stereotactic body radiation therapy (SBRT) for prostate cancer at our institution. METHODS Two hundred and eight consecutive patients with prostate cancer treated with SBRT monotherapy with at least three years of follow-up were included in this retrospective analysis. Treatment was delivered using the CyberKnife® (Accuray) to doses of 35-36.25 Gy in 5 fractions. Toxicities were scored using the CTCAE v.4. Hematuria was counted at the highest grade it occurred in the acute and late setting for each patient. Cystoscopy findings were retrospectively reviewed. Univariate and multivariate analyses were performed. Hematuria-associated bother was assessed via the Expanded Prostate Index Composite (EPIC)-26. RESULTS The median age was 69 years with a median prostate volume of 39 cc. With a median follow-up of 48 months, 38 patients (18.3%) experienced at least one episode of hematuria. Median time to hematuria was 13.5 months. In the late period, there were three grade 3 events and five grade 2 events. There were no grade 4 or 5 events. The 3-year actuarial incidence of late hematuria ≥ grade 2 was 2.4%. On univariate analysis, prostate volume (p = 0.022) and history of prior procedure(s) for benign prostatic hypertrophy (BPH) (p = 0.002) were significantly associated with hematuria. On multivariate analysis, history of prior procedure(s) for BPH (p < 0.0001) and α1A antagonist use (p = 0.008) were significantly associated with the development of hematuria. CONCLUSIONS SBRT for prostate cancer was well tolerated with hematuria rates comparable to other radiation modalities. Patients factors associated with BPH, such as larger prostate volume, alpha antagonist usage, and prior history of procedures for BPH are at increased risk for the development of hematuria.
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Affiliation(s)
- Marie K Gurka
- Department of Radiation Oncology, University of Louisville, Louisville, USA.
| | - Leonard N Chen
- Department of Radiation Medicine, Georgetown University Hospital, 3800 Reservoir Road, N.W, Washington D.C, 20007, USA.
| | - Aditi Bhagat
- Department of Radiation Medicine, Georgetown University Hospital, 3800 Reservoir Road, N.W, Washington D.C, 20007, USA.
| | - Rudy Moures
- Department of Radiation Medicine, Georgetown University Hospital, 3800 Reservoir Road, N.W, Washington D.C, 20007, USA.
| | - Joy S Kim
- Department of Radiation Medicine, Georgetown University Hospital, 3800 Reservoir Road, N.W, Washington D.C, 20007, USA.
| | - Thomas Yung
- Department of Radiation Medicine, Georgetown University Hospital, 3800 Reservoir Road, N.W, Washington D.C, 20007, USA.
| | - Siyuan Lei
- Department of Radiation Medicine, Georgetown University Hospital, 3800 Reservoir Road, N.W, Washington D.C, 20007, USA.
| | - Brian T Collins
- Department of Radiation Medicine, Georgetown University Hospital, 3800 Reservoir Road, N.W, Washington D.C, 20007, USA.
| | - Pranay Krishnan
- Department of Radiology, Georgetown University Hospital, Washington, USA.
| | - Simeng Suy
- Department of Radiation Medicine, Georgetown University Hospital, 3800 Reservoir Road, N.W, Washington D.C, 20007, USA.
| | - Anatoly Dritschilo
- Department of Radiation Medicine, Georgetown University Hospital, 3800 Reservoir Road, N.W, Washington D.C, 20007, USA.
| | - John H Lynch
- Department of Urology, Georgetown University Hospital, Washington, USA.
| | - Sean P Collins
- Department of Radiation Medicine, Georgetown University Hospital, 3800 Reservoir Road, N.W, Washington D.C, 20007, USA.
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Wilcox SW, Aherne NJ, McLachlan CS, McKay MJ, Last AJ, Shakespeare TP. Is modern external beam radiotherapy with androgen deprivation therapy still a viable alternative for prostate cancer in an era of robotic surgery and brachytherapy: A comparison of Australian series. J Med Imaging Radiat Oncol 2015; 59:125-33. [DOI: 10.1111/1754-9485.12275] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2014] [Accepted: 11/20/2014] [Indexed: 11/28/2022]
Affiliation(s)
- Shea William Wilcox
- Radiation Oncology; North Coast Cancer Institute; Port Macquarie New South Wales Australia
| | - Noel J. Aherne
- Radiation Oncology; North Coast Cancer Institute; Coffs Harbour New South Wales Australia
| | - Craig Steven McLachlan
- Rural Clinical School; The University of New South Wales; Sydney New South Wales Australia
| | - Michael J. McKay
- Radiation Oncology; North Coast Cancer Institute; Lismore New South Wales Australia
| | - Andrew J. Last
- Radiation Oncology; North Coast Cancer Institute; Port Macquarie New South Wales Australia
| | - Thomas P. Shakespeare
- Radiation Oncology; North Coast Cancer Institute; Port Macquarie New South Wales Australia
- Radiation Oncology; North Coast Cancer Institute; Coffs Harbour New South Wales Australia
- Rural Clinical School; The University of New South Wales; Sydney New South Wales Australia
- Radiation Oncology; North Coast Cancer Institute; Lismore New South Wales Australia
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Gofrit ON, Katz R, Shapiro A, Yutkin V, Pizov G, Zorn KC, Duvdevani M, Landau EH, Pode D. Gross hematuria in patients with prostate cancer: etiology and management. ISRN SURGERY 2013; 2013:685327. [PMID: 23634305 PMCID: PMC3619630 DOI: 10.1155/2013/685327] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 02/13/2013] [Accepted: 03/03/2013] [Indexed: 06/02/2023]
Abstract
The objective of the study is to assess the etiology and prognosis of gross hematuria (GH) in patients with carcinoma of the prostate (CAP). From 1991 to 2011, 81 men (mean age 74.3 years, SD 6.5) with CAP were hospitalized with GH. Primary treatment of CAP was radical surgery in 13 patients (group 1) and nonsurgical therapy in 68 (group 2), mostly radiotherapy (35 cases) and hormonal treatment (25 cases). The common etiologies of GH in group 1 were bladder cancer (38.5%) and urinary infection (23%). In contrast, CAP itself caused GH in 60% of the patients in group 2. Thirty-nine patients (48%) required transurethral surgery to manage GH which was effective in all cases; nevertheless, the prognosis of group 2 patients was dismal with median overall survival of 13 months after sustaining hematuria, compared to 50 months in group 1 (P = 0.0015). We conclude that the etiology of GH in patients with CAP varies according to primary treatment. After radical prostatectomy, it is habitually caused by bladder cancer or infection. When the primary treatment is not surgical, GH is most commonly due to CAP itself. Although surgical intervention is effective in alleviating hematuria of these patients, their prognosis is dismal.
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Affiliation(s)
- Ofer N. Gofrit
- Department of Urology, Hadassah Hebrew University Hospital, P.O. Box 12000, Jerusalem 91120, Israel
| | - Ran Katz
- Department of Urology, Hadassah Hebrew University Hospital, P.O. Box 12000, Jerusalem 91120, Israel
| | - Amos Shapiro
- Department of Urology, Hadassah Hebrew University Hospital, P.O. Box 12000, Jerusalem 91120, Israel
| | - Vladimir Yutkin
- Department of Urology, Hadassah Hebrew University Hospital, P.O. Box 12000, Jerusalem 91120, Israel
| | - Galina Pizov
- Department of Pathology, Hadassah Hebrew University Hospital, P.O. Box 12000, Jerusalem 91120, Israel
| | - Kevin C. Zorn
- Department of Urology, University of Montreal Hospital Center (CHUM), 1560 Sherbrooke E, Montreal, Quebec, Canada
| | - Mordechai Duvdevani
- Department of Urology, Hadassah Hebrew University Hospital, P.O. Box 12000, Jerusalem 91120, Israel
| | - Ezekiel H. Landau
- Department of Urology, Hadassah Hebrew University Hospital, P.O. Box 12000, Jerusalem 91120, Israel
| | - Dov Pode
- Department of Urology, Hadassah Hebrew University Hospital, P.O. Box 12000, Jerusalem 91120, Israel
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Can high-dose-rate brachytherapy prevent the major genitourinary complication better than external beam radiation alone for patients with previous transurethral resection of prostate? Int Urol Nephrol 2012; 45:113-9. [PMID: 22972569 DOI: 10.1007/s11255-012-0277-y] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2012] [Accepted: 08/29/2012] [Indexed: 10/27/2022]
Abstract
PURPOSE To compare the grade 3 genitourinary toxicity and oncological outcome for localized prostate cancer between high-dose-rate (HDR) brachytherapy and external beam radiation therapy (EBRT) alone in patients with previously undergone Transurethral resection of the prostate (TURP). MATERIALS AND METHODS From November 1998 to November 2008, 78 patients with a history of TURP underwent radiation therapy for localized prostate cancer. Of these, 59 were enrolled in this study. In this study, 34 patients underwent HDR brachytherapy and 25 patients underwent EBRT alone. RESULTS Grade 3 genitourinary complication was observed in 8.8 % of HDR brachytherapy group and 44 % in EBRT alone group. Five-year urinary incontinence rate was 2.9 % in HDR brachytherapy and 24 % in EBRT alone group. The results showed that significant higher incidence of grade 3 genitourinary complication (p = 0.003) and urinary incontinence was the most significant (p = 0.023) in the EBRT alone group. Five-year biochemical survival rate was 82.4 % in HDR brachytherapy group and 72.0 % in EBRT alone group (p = 0.396). CONCLUSIONS In patients with prostate cancer who have previously undergone TURP, we observed that HDR brachytherapy was able to control prostate cancer with fewer GU morbidities and oncological outcomes that were similar to those associated with traditional EBRT alone. Moreover, HDR brachytherapy led to a decrease in major GU toxicity and also preserved the sphincter function more than that in TURP patients who underwent EBRT alone.
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An update on the changing indications for androgen deprivation therapy for prostate cancer. Prostate Cancer 2011; 2011:419174. [PMID: 22110986 PMCID: PMC3216006 DOI: 10.1155/2011/419174] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2010] [Accepted: 01/03/2011] [Indexed: 02/06/2023] Open
Abstract
Quality of life has become increasingly more important for men diagnosed with prostate cancer. In light of this and the recognized risks of androgen deprivation therapy (ADT), the guidelines and use of ADT have changed significantly over the last few years. This paper reviews the current recommendations and the future perspectives regarding ADT. The benefits of ADT are evident neoadjuvantly and adjuvantly in patients treated with external beam radiation therapy for intermediate- and high-risk disease, in patients who have undergone prostatectomy with lymph node involvement, in high-risk patients after definitive therapy, and in patients who have developed progression or metastasis. Finally, this paper reviews the risks and benefits of each of these scenarios and the risks of androgen deprivation in general, and it delineates the areas where ADT was previously recommended, but where evidence is lacking for its additional benefit.
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Devisetty K, Zorn KC, Katz MH, Jani AB, Liauw SL. External Beam Radiation Therapy After Transurethral Resection of the Prostate: A Report on Acute and Late Genitourinary Toxicity. Int J Radiat Oncol Biol Phys 2010; 77:1060-5. [DOI: 10.1016/j.ijrobp.2009.06.078] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2009] [Revised: 06/07/2009] [Accepted: 06/12/2009] [Indexed: 10/20/2022]
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Wilson S. Update on the management of prostate cancer with goserelin acetate: patient perspectives. Cancer Manag Res 2009; 1:99-105. [PMID: 21188128 PMCID: PMC3004656 DOI: 10.2147/cmr.s5058] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2009] [Indexed: 11/23/2022] Open
Abstract
The guidelines for the use of androgen deprivation therapy (ADT) have changed significantly over the last 5 years. This paper reviews the current recommendations and documents the reasons for these changes, in a review of the world's literature on ADT over the last 5 years. Special emphasis on randomized controlled trials and high-impact journals was included in the Medline search and review. One hundred articles on this topic written in the last 5 years were reviewed. Fifty-nine contained nonindustry-biased findings in major-impact journals and were available in English. The benefits of ADT are evident in several areas, including neoadjuvantly and adjuvantly in patients treated with external beam radiation therapy for intermediate- and high-risk disease; in patients who have undergone prostatectomy and who are found to have lymph node involvement on surgical resection; in high-risk patients after definitive therapy; and in patients who have developed symptomatic local progression or metastasis. This paper reviews the risks and benefits in each of these scenarios and the risks of androgen deprivation in general, and delineates the areas where ADT was previously recommended, but has been found to no longer be of benefit.
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Affiliation(s)
- Shandra Wilson
- Division of Urology, University of Colorado, Aurora, CO, USA
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14
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Choe KS, Jani AB, Liauw SL. External beam radiotherapy for prostate cancer patients on anticoagulation therapy: how significant is the bleeding toxicity? Int J Radiat Oncol Biol Phys 2009; 76:755-60. [PMID: 19464123 DOI: 10.1016/j.ijrobp.2009.02.026] [Citation(s) in RCA: 56] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2008] [Revised: 02/04/2009] [Accepted: 02/12/2009] [Indexed: 11/24/2022]
Abstract
PURPOSE To characterize the bleeding toxicity associated with external beam radiotherapy for prostate cancer patients receiving anticoagulation (AC) therapy. METHODS AND MATERIALS The study cohort consisted of 568 patients with adenocarcinoma of the prostate who were treated with definitive external beam radiotherapy. Of these men, 79 were receiving AC therapy with either warfarin or clopidogrel. All patients were treated with three-dimensional conformal radiotherapy or intensity-modulated radiotherapy. Bleeding complications were recorded during treatment and subsequent follow-up visits. RESULTS With a median follow-up of 48 months, the 4-year actuarial risk of Grade 3 or worse bleeding toxicity was 15.5% for those receiving AC therapy compared with 3.6% among those not receiving AC (p < .0001). On multivariate analysis, AC therapy was the only significant factor associated with Grade 3 or worse bleeding (p < .0001). For patients taking AC therapy, the crude rate of bleeding was 39.2%. Multivariate analysis within the AC group demonstrated that a higher radiotherapy dose (p = .0408), intensity-modulated radiotherapy (p = 0.0136), and previous transurethral resection of the prostate (p = .0001) were associated with Grade 2 or worse bleeding toxicity. Androgen deprivation therapy was protective against bleeding, with borderline significance (p = 0.0599). Dose-volume histogram analysis revealed that Grade 3 or worse bleeding was minimized if the percentage of the rectum receiving >or=70 Gy was <10% or the rectum receiving >or=50 Gy was <50%. CONCLUSION Patients taking AC therapy have a substantial risk of bleeding toxicity from external beam radiotherapy. In this setting, dose escalation or intensity-modulated radiotherapy should be used judiciously. With adherence to strict dose-volume histogram criteria and minimizing hotspots, the risk of severe bleeding might be reduced.
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Affiliation(s)
- Kevin S Choe
- Department of Radiation and Cellular Oncology, University of Chicago Pritzker School of Medicine, Chicago, IL 60637, USA
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