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Polizzi M, Weiss E, Jan N, Ricco A, Kim S, Urdaneta A, Rosu‐Bubulac M. Rectal deformation management with IGRT in prostate radiotherapy: Can it be managed with rigid alignment alone? J Appl Clin Med Phys 2024; 25:e14241. [PMID: 38193605 PMCID: PMC11005986 DOI: 10.1002/acm2.14241] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2023] [Revised: 10/15/2023] [Accepted: 10/25/2023] [Indexed: 01/10/2024] Open
Abstract
PURPOSE It is challenging to achieve appropriate target coverage of the prostate with Image Guided Radiation Therapy (IGRT) while simultaneously constraining rectal doses within planned values when there is significant variability in rectal filling and shape. We investigated if rectum planning goals can be fulfilled using rigid CBCT-based on-board alignment to account for interfraction rectal deformations. METHODS Delivered rectal doses corresponding to prostate alignment ("PR") and anterior rectum alignment ("AR") for 239 daily treatments from 13 patients are reported. Rectal doses were estimated by rigidly mapping the planned dose on the daily CT derived from the daily CBCT according to respective alignment shifts. Rectum V95% (rV95%) was used for analyses. RESULTS Compared to "PR", "AR" alignment increased rV95% for an average of 34.4% across all patients. rV95% (cc) averaged over all fractions was significant from planning values for 10/13 patients for "PR" and for 9/13 for "AR". 3/13 patients had reproducible anatomy. Of patients with non-reproducible anatomy, three had dosimetrically more favorable, while seven had less favorable anatomies. Most shift differences (82.3%) between the "PR" and "AR" alignments larger than 2 mm resulted in rV95% changes larger than 2 cc. Most shift differences (82.2%) of 2 mm or less between the "PR" and "AR" alignments resulted in rV95% changes less than 2 cc. The average percentage of fractions among patients in which anterior or posterior shifts for "AR" and "PR" alignment was larger than the PTV margins was 9.1% (0.0%-37.5%) and 1.3% (0%-10%). CONCLUSION Rectal deformation and subsequent inconsistent interfraction separation between prostate and rectal wall translate into anatomical changes that cannot always be mitigated with rigid alignment. If systematic differences exist due to a non-reproducible planning anatomy, attempts to restore the planned rectal doses through anterior rectum alignment produce rather small improvements and may result in unacceptable target underdosage.
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Affiliation(s)
- Mitchell Polizzi
- Department of Radiation OncologyVirginia Commonwealth UniversityRichmondVirginiaUSA
| | - Elisabeth Weiss
- Department of Radiation OncologyVirginia Commonwealth UniversityRichmondVirginiaUSA
| | - Nuzhat Jan
- Department of Radiation OncologyVirginia Commonwealth UniversityRichmondVirginiaUSA
| | - Anthony Ricco
- Department of Radiation OncologyVirginia Commonwealth UniversityRichmondVirginiaUSA
| | - Siyong Kim
- Department of Radiation OncologyVirginia Commonwealth UniversityRichmondVirginiaUSA
| | - Alfredo Urdaneta
- Department of Radiation OncologyVirginia Commonwealth UniversityRichmondVirginiaUSA
| | - Mihaela Rosu‐Bubulac
- Department of Radiation OncologyVirginia Commonwealth UniversityRichmondVirginiaUSA
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Jahreiβ MC, Incrocci L, Dirkx M, de Vries KC, Aben KKH, Bangma C, Heemsbergen WD. Long-term Overall Survival after External Beam Radiotherapy for Localised Prostate Cancer. Clin Oncol (R Coll Radiol) 2023; 35:e689-e698. [PMID: 37852813 DOI: 10.1016/j.clon.2023.09.017] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2023] [Revised: 08/28/2023] [Accepted: 09/28/2023] [Indexed: 10/20/2023]
Abstract
AIMS Knowledge on survival probabilities is essential for determining optimal treatment strategies. We studied overall survival and associated prognostic factors in Dutch patients with localised prostate cancer (PCa) selected for external beam radiotherapy. MATERIALS AND METHODS For this single-centre retrospective cohort study, we identified all T1-T3 PCa patients (aged 55-80 years) in the radiotherapy planning database with a start date between January 2006 and December 2013, treated with 72-78 Gy in 2 Gy fractions to the prostate ± seminal vesicles (n = 1536). Long-term androgen deprivation therapy (ADT) was predominantly prescribed in the case of extracapsular disease (>T3). Overall survival was estimated using the Kaplan-Meier method. Prognostic factors were evaluated in Cox regression models for the intermediate-risk and high-risk groups. RESULTS The median follow-up was 12 years for patients who were alive. Ten-year survival rates were 79.0% for low-risk (n = 120), 59.9% for intermediate-risk (n = 430) and 56.8% for high-risk patients (n = 986). A higher age, higher comorbidity score, active smoking and Gleason score ≥8 had a statistically significant negative impact on overall survival at multivariable analysis. ADT was associated with superior overall survival in the high-risk group translating into overall survival rates similar to the intermediate-risk group. CONCLUSIONS Although PCa patients selected for external beam radiotherapy are typically in good health, their comorbidity score and smoking habits appeared to be dominant predictors for overall survival. Overall survival rates within the high-risk group varied, showing improved overall survival with ADT prescription and worse overall survival in the case of Gleason score ≥8.
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Affiliation(s)
- M-C Jahreiβ
- Department of Radiotherapy, Erasmus MC Cancer Institute, University Medical Center Rotterdam, Rotterdam, The Netherlands
| | - L Incrocci
- Department of Radiotherapy, Erasmus MC Cancer Institute, University Medical Center Rotterdam, Rotterdam, The Netherlands
| | - M Dirkx
- Department of Radiotherapy, Erasmus MC Cancer Institute, University Medical Center Rotterdam, Rotterdam, The Netherlands
| | - K C de Vries
- Department of Radiotherapy, Erasmus MC Cancer Institute, University Medical Center Rotterdam, Rotterdam, The Netherlands
| | - K K H Aben
- Department of Research, Netherlands Comprehensive Cancer Organization, Utrecht, The Netherlands; Department for Health Evidence, Radboud University Medical Center, Nijmegen, The Netherlands
| | - C Bangma
- Department of Urology, Erasmus MC Cancer Institute, University Medical Center Rotterdam, Rotterdam, The Netherlands
| | - W D Heemsbergen
- Department of Radiotherapy, Erasmus MC Cancer Institute, University Medical Center Rotterdam, Rotterdam, The Netherlands.
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Cartes R, Karim MU, Tisseverasinghe S, Tolba M, Bahoric B, Anidjar M, McPherson V, Probst S, Rompré-Brodeur A, Niazi T. Neoadjuvant versus Concurrent Androgen Deprivation Therapy in Localized Prostate Cancer Treated with Radiotherapy: A Systematic Review of the Literature. Cancers (Basel) 2023; 15:3363. [PMID: 37444473 DOI: 10.3390/cancers15133363] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2023] [Revised: 06/21/2023] [Accepted: 06/23/2023] [Indexed: 07/15/2023] Open
Abstract
BACKGROUND There is an ongoing debate on the optimal sequencing of androgen deprivation therapy (ADT) and radiotherapy (RT) in patients with localized prostate cancer (PCa). Recent data favors concurrent ADT and RT over the neoadjuvant approach. METHODS We conducted a systematic review in PubMed, EMBASE, and Cochrane Databases assessing the combination and optimal sequencing of ADT and RT for Intermediate-Risk (IR) and High-Risk (HR) PCa. FINDINGS Twenty randomized control trials, one abstract, one individual patient data meta-analysis, and two retrospective studies were selected. HR PCa patients had improved survival outcomes with RT and ADT, particularly when a long-course Neoadjuvant-Concurrent-Adjuvant ADT was used. This benefit was seen in IR PCa when adding short-course ADT, although less consistently. The best available evidence indicates that concurrent over neoadjuvant sequencing is associated with better metastases-free survival at 15 years. Although most patients had IR PCa, HR participants may have been undertreated with short-course ADT and the absence of pelvic RT. Conversely, retrospective data suggests a survival benefit when using the neoadjuvant approach in HR PCa patients. INTERPRETATION The available literature supports concurrent ADT and RT initiation for IR PCa. Neoadjuvant-concurrent-adjuvant sequencing should remain the standard approach for HR PCa and is an option for IR PCa.
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Affiliation(s)
- Rodrigo Cartes
- Department of Radiation Oncology, McGill University, Montreal, QC H3A 0G4, Canada
| | - Muneeb Uddin Karim
- Department of Radiation Oncology, McGill University, Montreal, QC H3A 0G4, Canada
| | | | - Marwan Tolba
- Department of Radiation Oncology, Dalhousie University, and Nova Scotia Health Authority, Sydney, NS B1P 1P3, Canada
| | - Boris Bahoric
- Department of Radiation Oncology, McGill University, Montreal, QC H3A 0G4, Canada
| | - Maurice Anidjar
- Department of Urology, McGill University, Montreal, QC H3A 0G4, Canada
| | - Victor McPherson
- Department of Urology, McGill University, Montreal, QC H3A 0G4, Canada
| | - Stephan Probst
- Department of Nuclear Medicine, McGill University, Montreal, QC H3A 0G4, Canada
| | | | - Tamim Niazi
- Department of Radiation Oncology, McGill University, Montreal, QC H3A 0G4, Canada
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Patel SA, Ma TM, Wong JK, Stish BJ, Dess RT, Pilar A, Reddy C, Wedde TB, Lilleby WA, Fiano R, Merrick GS, Stock RG, Demanes DJ, Moran BJ, Tran PT, Krauss DJ, Abu-Isa EI, Pisansky TM, Choo CR, Song DY, Greco S, Deville C, DeWeese TL, Tilki D, Ciezki JP, Karnes RJ, Nickols NG, Rettig MB, Feng FY, Berlin A, Tward JD, Davis BJ, Reiter RE, Boutros PC, Romero T, Horwitz EM, Tendulkar RD, Steinberg ML, Spratt DE, Xiang M, Kishan AU. External Beam Radiation Therapy With or Without Brachytherapy Boost in Men With Very-High-Risk Prostate Cancer: A Large Multicenter International Consortium Analysis. Int J Radiat Oncol Biol Phys 2023; 115:645-653. [PMID: 36179990 DOI: 10.1016/j.ijrobp.2022.09.075] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2022] [Revised: 09/09/2022] [Accepted: 09/18/2022] [Indexed: 02/04/2023]
Abstract
PURPOSE Very-high-risk (VHR) prostate cancer (PC) is an aggressive subgroup with high risk of distant disease progression. Systemic treatment intensification with abiraterone or docetaxel reduces PC-specific mortality (PCSM) and distant metastasis (DM) in men receiving external beam radiation therapy (EBRT) with androgen deprivation therapy (ADT). Whether prostate-directed treatment intensification with the addition of brachytherapy (BT) boost to EBRT with ADT improves outcomes in this group is unclear. METHODS AND MATERIALS This cohort study from 16 centers across 4 countries included men with VHR PC treated with either dose-escalated EBRT with ≥24 months of ADT or EBRT + BT boost with ≥12 months of ADT. VHR was defined by National Comprehensive Cancer Network (NCCN) criteria (clinical T3b-4, primary Gleason pattern 5, or ≥2 NCCN high-risk features), and results were corroborated in a subgroup of men who met Systemic Therapy in Advancing or Metastatic Prostate Cancer: Evaluation of Drug Efficacy (STAMPEDE) trials inclusion criteria (≥2 of the following: clinical T3-4, Gleason 8-10, or PSA ≥40 ng/mL). PCSM and DM between EBRT and EBRT + BT were compared using inverse probability of treatment weight-adjusted Fine-Gray competing risk regression. RESULTS Among the entire cohort, 270 underwent EBRT and 101 EBRT + BT. After a median follow-up of 7.8 years, 6.7% and 5.9% of men died of PC and 16.3% and 9.9% had DM after EBRT and EBRT + BT, respectively. There was no significant difference in PCSM (sHR, 1.47 [95% CI, 0.57-3.75]; P = .42) or DM (sHR, 0.72, [95% CI, 0.30-1.71]; P = .45) between EBRT + BT and EBRT. Results were similar within the STAMPEDE-defined VHR subgroup (PCSM: sHR, 1.67 [95% CI, 0.48-5.81]; P = .42; DM: sHR, 0.56 [95% CI, 0.15-2.04]; P = .38). CONCLUSIONS In this VHR PC cohort, no difference in clinically meaningful outcomes was observed between EBRT alone with ≥24 months of ADT compared with EBRT + BT with ≥12 months of ADT. Comparative analyses in men treated with intensified systemic therapy are warranted.
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Affiliation(s)
- Sagar A Patel
- Department of Radiation Oncology, Emory University, Atlanta, Georgia.
| | - Ting Martin Ma
- Department of Radiation Oncology, University of California, Los Angeles, California
| | - Jessica K Wong
- Department of Radiation Oncology, Fox Chase Cancer Center, Philadelphia, Pennsylvania
| | - Bradley J Stish
- Department of Radiation Oncology, Mayo Clinic, Rochester, Minnesota
| | - Robert T Dess
- Department of Radiation Oncology, University of Michigan, Ann Arbor, Michigan
| | - Avinash Pilar
- Radiation Medicine Program, Princess Margaret Cancer Centre, Ontario, Canada; Department of Radiation Oncology, University of Toronto, Ontario, Canada
| | - Chandana Reddy
- Department of Radiation Oncology, Cleveland Clinic, Cleveland Ohio
| | | | | | - Ryan Fiano
- Urologic Research Institute, Ohio University School of Medicine, Athens Ohio
| | - Gregory S Merrick
- Urologic Research Institute, Ohio University School of Medicine, Athens Ohio
| | - Richard G Stock
- Department of Radiation Oncology, Icahn School of Medicine at Mount Sinai, New York, New York
| | - D Jeffrey Demanes
- Department of Radiation Oncology, University of California, Los Angeles, California
| | | | - Phuoc T Tran
- Department of Radiation Oncology, University of Maryland, Baltimore Maryland
| | | | - Eyad I Abu-Isa
- Department of Radiation Oncology, University of Michigan, Ann Arbor, Michigan
| | | | - C Richard Choo
- Department of Radiation Oncology, Mayo Clinic, Rochester, Minnesota
| | - Daniel Y Song
- Department of Radiation Oncology and Molecular Radiation Sciences, Johns Hopkins University School of Medicine, Baltimore, Maryland
| | - Stephen Greco
- Department of Radiation Oncology and Molecular Radiation Sciences, Johns Hopkins University School of Medicine, Baltimore, Maryland
| | - Curtiland Deville
- Department of Radiation Oncology and Molecular Radiation Sciences, Johns Hopkins University School of Medicine, Baltimore, Maryland
| | - Theodore L DeWeese
- Department of Radiation Oncology and Molecular Radiation Sciences, Johns Hopkins University School of Medicine, Baltimore, Maryland
| | - Derya Tilki
- Martini-Klinik Prostate Cancer Center, University Hospital Hamburg Eppendorf, Hamburg, Germany
| | - Jay P Ciezki
- Department of Radiation Oncology, Cleveland Clinic, Cleveland Ohio
| | | | - Nicholas G Nickols
- Department of Radiation Oncology, University of California, Los Angeles, California
| | - Matthew B Rettig
- Division of Medical Oncology, Ronald Reagan UCLA Medical Center, University of California, Los Angeles, California
| | - Felix Y Feng
- Helen Diller Family Comprehensive Cancer Center, University of California, San Francisco, California
| | - Alejandro Berlin
- Radiation Medicine Program, Princess Margaret Cancer Centre, Ontario, Canada
| | - Jonathan D Tward
- Department of Radiation Therapy Oncology, Huntsman Cancer Institute at the University of Utah, Salt Lake City, Utah
| | - Brian J Davis
- Department of Radiation Oncology, Mayo Clinic, Rochester, Minnesota
| | - Robert E Reiter
- Department of Urology, University of California, Los Angeles, California
| | - Paul C Boutros
- Department of Urology, University of California, Los Angeles, California
| | - Tahmineh Romero
- Division of General Internal Medicine and Health Services Research, University of California, Los Angeles, California
| | - Eric M Horwitz
- Department of Radiation Oncology, Fox Chase Cancer Center, Philadelphia, Pennsylvania
| | | | - Michael L Steinberg
- Department of Radiation Oncology, University of California, Los Angeles, California
| | - Daniel E Spratt
- Seidman Cancer Center, Case Western Reserve University, Cleveland, Ohio
| | - Michael Xiang
- Department of Radiation Oncology, University of California, Los Angeles, California
| | - Amar U Kishan
- Department of Radiation Oncology, University of California, Los Angeles, California
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de Chavez R, Grogan G, Hug B, Howe K, Grigg A, Waterhouse D, Lane J, Glyde A, Brown E, Bydder S, Pryor D, Hargrave C, Charles PH, Hellyer J, Ebert MA. Assessment of HDR brachytherapy-replicating prostate radiotherapy planning for tomotherapy, cyberknife and VMAT. Med Dosim 2021; 47:61-69. [PMID: 34551879 DOI: 10.1016/j.meddos.2021.08.003] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2021] [Revised: 08/13/2021] [Accepted: 08/19/2021] [Indexed: 11/19/2022]
Abstract
A dosimetric study was undertaken to assess the ability of Cyberknife (CK), Volumetric Modulated Arc Therapy (VMAT), and TomoTherapy (Tomo) to generate treatment plans that mimic the dosimetry of high dose-rate brachytherapy (HDR BT) for prostate cancer. The project aimed to assess the potential of using stereotactic body radiotherapy (SBRT) for boost treatment of high-risk prostate cancer patients where HDR BT in combination with conformal external beam radiotherapy (EBRT) is the standard of care. The datasets of 6 prostate patients previously treated with HDR BT were collated. VMAT, CK, and TomoTherapy treatment plans were generated for each dataset using the target and organ-at-risk structures as defined by the Radiation Oncologist during the HDR BT treatment process. The HDR BT plan isodoses were also converted into planning structures to assist the other modalities to achieve a HDR BT-like dose distribution. CK plans were created using both the iris collimator (IC) and a multileaf collimator (MLC). Comparison of the techniques was made based on dose-volume indices. Each plan was created at centres experienced using the respective treatment planning systems (TPS). Planning target volume (PTV V100%), i.e., the volume of the planning target volume (PTV) receiving 100% of the relative dose, in VMAT and TomoTherapy SBRT plans was higher than HDR BT plans. PTV V150% and V200%, i.e., volume of the PTV receiving 150% and 200% of the relative dose, were approached on all the CK MLC and TomoTherapy SBRT plans. However, it is not presently achievable for "virtual brachytherapy" SBRT to replicate the same high intraprostatic doses as HDR BT while meeting the constraints on the organs-at-risk (OARs). Half of the CK IC plans achieved PTV V150% but this was at the expense of high rectal dose. TomoTherapy and CK MLC plans achieved PTV V150% and V200% but the bladder dose was higher compared to CK IC plans. VMAT exhibited excellent PTV coverage based on V100 and OAR sparing, but without any ability to achieve the high intra-prostatic doses of HDR (V150% and V200%). SBRT techniques can be used to deliver hypofractionated radiotherapy to the PTV V100%. Based on the comparison of "physical" dose distributions, SBRT cannot presently achieve the same high intraprostatic doses as HDR BT while respecting the OAR constraints. SBRT still remains an attractive treatment option for delivering hypofractionated treatments for prostate cancer compared to HDR BT, in particular as it is less invasive and less resource intensive. Long-term outcomes of clinical trials comparing HDR BT and SBRT "prostate boosts" may show whether the high intraprostatic doses are clinically significant and correlate with outcomes.
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Affiliation(s)
- Romena de Chavez
- Princess Alexandra Hospital, Brisbane, Australia; GenesisCare, Australia.
| | - Garry Grogan
- Sir Charles Gairdner Hospital, Perth, Australia.
| | - Ben Hug
- 5D Clinics, Perth, Australia.
| | - Kate Howe
- Princess Alexandra Hospital, Brisbane, Australia.
| | - Alice Grigg
- Royal Brisbane and Women's Hospital, Brisbane, Australia.
| | - David Waterhouse
- Sir Charles Gairdner Hospital, Perth, Australia; GenesisCare, Australia.
| | | | - Alan Glyde
- Princess Alexandra Hospital, Brisbane, Australia.
| | | | - Sean Bydder
- Sir Charles Gairdner Hospital, Perth, Australia; 5D Clinics, Perth, Australia.
| | - David Pryor
- Princess Alexandra Hospital, Brisbane, Australia.
| | - Cathy Hargrave
- Princess Alexandra Hospital, Brisbane, Australia; Royal Brisbane and Women's Hospital, Brisbane, Australia.
| | - Paul H Charles
- Princess Alexandra Hospital, Brisbane, Australia; Royal Brisbane and Women's Hospital, Brisbane, Australia; Queensland University of Technology, Brisbane, Australia; Herston Biofabrication Institute, Brisbane, Australia; School of Information Technology and Electrical Engineering, University of Queensland, St Lucia, Brisbane, Australia; School of Chemistry and Physics, Queensland University of Technology, Brisbane, Australia.
| | | | - Martin A Ebert
- Sir Charles Gairdner Hospital, Perth, Australia; 5D Clinics, Perth, Australia; University of Western Australia, Perth, Australia.
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Richardson M, Skehan K, Wilton L, Sams J, Samuels J, Goodwin J, Greer P, Sridharan S, Martin J. Visualising the urethra for prostate radiotherapy planning. J Med Radiat Sci 2021; 68:282-288. [PMID: 34028976 PMCID: PMC8424315 DOI: 10.1002/jmrs.485] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2020] [Accepted: 05/01/2021] [Indexed: 12/26/2022] Open
Abstract
INTRODUCTION The prostatic urethra is an organ at risk for prostate radiotherapy with genitourinary toxicities a common side effect. Many external beam radiation therapy protocols call for urethral sparing, and with modulated radiotherapy techniques, the radiation dose distribution can be controlled so that maximum doses do not fall within the prostatic urethral volume. Whilst traditional diagnostic MRI sequences provide excellent delineation of the prostate, uncertainty often remains as to the true path of the urethra within the gland. This study aims to assess if a high-resolution isotropic 3D T2 MRI series can reduce inter-observer variability in urethral delineation for radiotherapy planning. METHODS Five independent observers contoured the prostatic urethra for ten patients on three data sets; a 2 mm axial CT, a diagnostic 3 mm axial T2 TSE MRI and a 0.9 mm isotropic 3D T2 SPACE MRI. The observers were blinded from each other's contours. A Dice Similarity Coefficient (DSC) score was calculated using the intersection and union of the five observer contours vs an expert reference contour for each data set. RESULTS The mean DSC of the observer vs reference contours was 0.47 for CT, 0.62 for T2 TSE and 0.78 for T2 SPACE (P < 0.001). CONCLUSIONS The introduction of a 0.9 mm isotropic 3D T2 SPACE MRI for treatment planning provides improved urethral visualisation and can lead to a significant reduction in inter-observer variation in prostatic urethral contouring.
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Affiliation(s)
- Matthew Richardson
- Department of Radiation OncologyCalvary Mater NewcastleWaratahNew South WalesAustralia
| | - Kate Skehan
- Department of Radiation OncologyCalvary Mater NewcastleWaratahNew South WalesAustralia
| | - Lee Wilton
- Department of Radiation OncologyCalvary Mater NewcastleWaratahNew South WalesAustralia
| | - Joshua Sams
- Department of Radiation OncologyCalvary Mater NewcastleWaratahNew South WalesAustralia
| | - Justin Samuels
- Department of Radiation OncologyCalvary Mater NewcastleWaratahNew South WalesAustralia
| | - Jonathan Goodwin
- Department of Radiation OncologyCalvary Mater NewcastleWaratahNew South WalesAustralia
- School of Mathematical and Physical ScienceUniversity of NewcastleCallaghanNew South WalesAustralia
| | - Peter Greer
- Department of Radiation OncologyCalvary Mater NewcastleWaratahNew South WalesAustralia
- School of Mathematical and Physical ScienceUniversity of NewcastleCallaghanNew South WalesAustralia
| | - Swetha Sridharan
- Department of Radiation OncologyCalvary Mater NewcastleWaratahNew South WalesAustralia
| | - Jarad Martin
- Department of Radiation OncologyCalvary Mater NewcastleWaratahNew South WalesAustralia
- School of Medicine and Public HealthUniversity of NewcastleCallaghanNew South WalesAustralia
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Wang YF, Tadimalla S, Hayden AJ, Holloway L, Haworth A. Artificial intelligence and imaging biomarkers for prostate radiation therapy during and after treatment. J Med Imaging Radiat Oncol 2021; 65:612-626. [PMID: 34060219 DOI: 10.1111/1754-9485.13242] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2021] [Revised: 04/18/2021] [Accepted: 05/02/2021] [Indexed: 12/15/2022]
Abstract
Magnetic resonance imaging (MRI) is increasingly used in the management of prostate cancer (PCa). Quantitative MRI (qMRI) parameters, derived from multi-parametric MRI, provide indirect measures of tumour characteristics such as cellularity, angiogenesis and hypoxia. Using Artificial Intelligence (AI), relevant information and patterns can be efficiently identified in these complex data to develop quantitative imaging biomarkers (QIBs) of tumour function and biology. Such QIBs have already demonstrated potential in the diagnosis and staging of PCa. In this review, we explore the role of these QIBs in monitoring treatment response during and after PCa radiotherapy (RT). Recurrence of PCa after RT is not uncommon, and early detection prior to development of metastases provides an opportunity for salvage treatments with curative intent. However, the current method of monitoring treatment response using prostate-specific antigen levels lacks specificity. QIBs, derived from qMRI and developed using AI techniques, can be used to monitor biological changes post-RT providing the potential for accurate and early diagnosis of recurrent disease.
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Affiliation(s)
- Yu-Feng Wang
- Institute of Medical Physics, School of Physics, Faculty of Science, The University of Sydney, Sydney, New South Wales, Australia
- Ingham Institute for Applied Medical Research, Liverpool, New South Wales, Australia
| | - Sirisha Tadimalla
- Institute of Medical Physics, School of Physics, Faculty of Science, The University of Sydney, Sydney, New South Wales, Australia
| | - Amy J Hayden
- Sydney West Radiation Oncology, Westmead Hospital, Wentworthville, New South Wales, Australia
- Faculty of Medicine, Western Sydney University, Sydney, New South Wales, Australia
- Faculty of Medicine, Health & Human Sciences, Macquarie University, Sydney, New South Wales, Australia
| | - Lois Holloway
- Institute of Medical Physics, School of Physics, Faculty of Science, The University of Sydney, Sydney, New South Wales, Australia
- Ingham Institute for Applied Medical Research, Liverpool, New South Wales, Australia
- Liverpool and Macarthur Cancer Therapy Centre, Liverpool Hospital, Liverpool, New South Wales, Australia
| | - Annette Haworth
- Institute of Medical Physics, School of Physics, Faculty of Science, The University of Sydney, Sydney, New South Wales, Australia
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Her EJ, Ebert MA, Kennedy A, Reynolds HM, Sun Y, Williams S, Haworth A. Standard versus hypofractionated intensity-modulated radiotherapy for prostate cancer: assessing the impact on dose modulation and normal tissue effects when using patient-specific cancer biology. Phys Med Biol 2021; 66:045007. [PMID: 32408293 DOI: 10.1088/1361-6560/ab9354] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Hypofractionation of prostate cancer radiotherapy achieves tumour control at lower total radiation doses, however, increased rectal and bladder toxicities have been observed. To realise the radiobiological advantage of hypofractionation whilst minimising harm, the potential reduction in dose to organs at risk was investigated for biofocused radiotherapy. Patient-specific tumour location and cell density information were derived from multiparametric imaging. Uniform-dose plans and biologically-optimised plans were generated for a standard schedule (78 Gy/39 fractions) and hypofractionated schedules (60 Gy/20 fractions and 36.25 Gy/5 fractions). Results showed that biologically-optimised plans yielded statistically lower doses to the rectum and bladder compared to isoeffective uniform-dose plans for all fractionation schedules. A reduction in the number of fractions increased the target dose modulation required to achieve equal tumour control. On average, biologically-optimised, moderately-hypofractionated plans demonstrated 15.3% (p-value: <0.01) and 23.8% (p-value: 0.02) reduction in rectal and bladder dose compared with standard fractionation. The tissue-sparing effect was more pronounced in extreme hypofractionation with mean reduction in rectal and bladder dose of 43.3% (p-value: < 0.01) and 41.8% (p-value: 0.02), respectively. This study suggests that the ability to utilise patient-specific tumour biology information will provide greater incentive to employ hypofractionation in the treatment of localised prostate cancer with radiotherapy. However, to exploit the radiobiological advantages given by hypofractionation, greater attention to geometric accuracy is required due to increased sensitivity to treatment uncertainties.
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Affiliation(s)
- E J Her
- School of Physics, Mathematics and Computing, University of Western Australia, Perth, Australia
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Peyraga G, Lizee T, Khalifa J, Blais E, Mauriange-Turpin G, Supiot S, Krhili S, Tremolieres P, Graff-Cailleaud P. Brachytherapy boost (BT-boost) or stereotactic body radiation therapy boost (SBRT-boost) for high-risk prostate cancer (HR-PCa). Cancer Radiother 2021; 25:400-409. [PMID: 33478838 DOI: 10.1016/j.canrad.2020.11.004] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2020] [Revised: 11/21/2020] [Accepted: 11/25/2020] [Indexed: 11/25/2022]
Abstract
Systematic review for the treatment of high-risk prostate cancer (HR-PCa, D'Amico classification risk system) with external body radiation therapy (EBRT)+brachytherapy-boost (BT-boost) or with EBRT+stereotactic body RT-boost (SBRT-boost). In March 2020, 391 English citations on PubMed matched with search terms "high risk prostate cancer boost". Respectively 9 and 48 prospective and retrospective studies were on BT-boost and 7 retrospective studies were on SBRT-boost. Two SBRT-boost trials were prospective. Only one study (ASCENDE-RT) directly compared the gold standard treatment [dose-escalation (DE)-EBRT+androgen deprivation treatment (ADT)] versus EBRT+ADT+BT-boost. Biochemical control rates at 9 years were 83% in the experimental arm versus 63% in the standard arm. Cumulative incidence of late grade 3 urinary toxicity in the experimental arm and in the standard arm was respectively 18% and 5%. Two recent studies with HR-PCa (National Cancer Database) demonstrated better overall survival with BT-boost (low dose rate LDR or high dose rate HDR) compared with DE-EBRT. These recent findings demonstrate the superiority of EBRT+BT-boost+ADT versus DE-EBRT+ADT for HR-PCa. It seems that EBRT+BT-boost+ADT could now be considered as a gold standard treatment for HR-PCa. HDR or LDR are options. SBRT-boost represents an attractive alternative, but the absence of randomised trials does not allow us to conclude for HR-PCa. Prospective randomised international phase III trials or meta-analyses could improve the level of evidence of SBRT-boost for HR-PCa.
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Affiliation(s)
- G Peyraga
- Radiation department, Toulouse university institute of cancer, Oncopôle, Toulouse, France; Radiation therapy department, Groupe de radiotherapie et d'oncologie des Pyrénées, chemin de l'Ormeau, 65000 Tarbes, France.
| | - T Lizee
- Radiation therapy department, Integrated centre of oncology (Paul Papin), Angers, France
| | - J Khalifa
- Radiation department, Toulouse university institute of cancer, Oncopôle, Toulouse, France
| | - E Blais
- Radiation therapy department, Groupe de radiotherapie et d'oncologie des Pyrénées, chemin de l'Ormeau, 65000 Tarbes, France
| | - G Mauriange-Turpin
- Radiation therapy department, University hospital centre, Limoges, France
| | - S Supiot
- Radiation therapy department, Integrated centre of oncology (Rene Gauducheau), Saint-Herblain, France
| | - S Krhili
- Radiation therapy department, Curie Institute, Paris, France
| | - P Tremolieres
- Radiation therapy department, Integrated centre of oncology (Paul Papin), Angers, France
| | - P Graff-Cailleaud
- Radiation department, Toulouse university institute of cancer, Oncopôle, Toulouse, France
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10
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Marcello M, Denham JW, Kennedy A, Haworth A, Steigler A, Greer PB, Holloway LC, Dowling JA, Jameson MG, Roach D, Joseph DJ, Gulliford SL, Dearnaley DP, Sydes MR, Hall E, Ebert MA. Reduced Dose Posterior to Prostate Correlates With Increased PSA Progression in Voxel-Based Analysis of 3 Randomized Phase 3 Trials. Int J Radiat Oncol Biol Phys 2020; 108:1304-1318. [PMID: 32739320 DOI: 10.1016/j.ijrobp.2020.07.030] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/01/2020] [Revised: 07/13/2020] [Accepted: 07/20/2020] [Indexed: 02/07/2023]
Abstract
PURPOSE Reducing margins during treatment planning to decrease dose to healthy organs surrounding the prostate can risk inadequate treatment of subclinical disease. This study aimed to investigate whether lack of dose to subclinical disease is associated with increased disease progression by using high-quality prostate radiation therapy clinical trial data to identify anatomically localized regions where dose variation is associated with prostate-specific antigen progression (PSAP). METHODS AND MATERIALS Planned dose distributions for 683 patients of the Trans-Tasman Radiation Oncology Group 03.04 Randomized Androgen Deprivation and Radiotherapy (RADAR) trial were deformably registered onto a single exemplar computed tomography data set. These were divided into high-risk and intermediate-risk subgroups for analysis. Three independent voxel-based statistical tests, using permutation testing, Cox regression modeling, and least absolute shrinkage selection operator feature selection, were applied to identify regions where dose variation was associated with PSAP. Results from the intermediate-risk RADAR subgroup were externally validated by registering dose distributions from the RT01 (n = 388) and Conventional or Hypofractionated High Dose Intensity Modulated Radiotherapy for Prostate Cancer Trial (CHHiP) (n = 253) trials onto the same exemplar and repeating the tests on each of these data sets. RESULTS Voxel-based Cox regression revealed regions where reduced dose was correlated with increased prostate-specific androgen progression. Reduced dose in regions associated with coverage at the posterior prostate, in the immediate periphery of the posterior prostate, and in regions corresponding to the posterior oblique beams or posterior lateral beam boundary, was associated with increased PSAP for RADAR and RT01 patients, but not for CHHiP patients. Reduced dose to the seminal vesicle region was also associated with increased PSAP for RADAR intermediate-risk patients. CONCLUSIONS Ensuring adequate dose coverage at the posterior prostate and immediately surrounding posterior region (including the seminal vesicles), where aggressive cancer spread may be occurring, may improve tumor control. It is recommended that particular care be taken when defining margins at the prostate posterior, acknowledging the trade-off between quality of life due to rectal dose and the preferences of clinicians and patients.
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Affiliation(s)
- Marco Marcello
- Department of Physics, University of Western Australia, Perth, Western Australia, Australia; Department of Radiation Oncology, Sir Charles Gairdner Hospital, Perth, Western Australia, Australia.
| | - James W Denham
- School of Medicine and Public Health, University of Newcastle, Newcastle, New South Wales, Australia
| | - Angel Kennedy
- Department of Radiation Oncology, Sir Charles Gairdner Hospital, Perth, Western Australia, Australia
| | - Annette Haworth
- School of Physics, University of Sydney, Sydney, New South Wales, Australia
| | - Allison Steigler
- Prostate Cancer Trials Group, School of Medicine and Public Health, University of Newcastle, Newcastle, New South Wales, Australia
| | - Peter B Greer
- School of Mathematical and Physical Sciences, University of Newcastle, Newcastle, New South Wales, Australia; Department of Radiation Oncology, Calvary Mater Newcastle, Newcastle, New South Wales, Australia
| | - Lois C Holloway
- Department of Medical Physics, Liverpool Cancer Centre, Sydney, New South Wales, Australia; South Western Sydney Clinical School, University of New South Wales, Sydney, New South Wales, Australia; Centre for Medical Radiation Physics, University of Wollongong, Wollongong, New South Wales, Australia
| | - Jason A Dowling
- School of Mathematical and Physical Sciences, University of Newcastle, Newcastle, New South Wales, Australia; CSIRO, Brisbane, Queensland, Australia
| | - Michael G Jameson
- Department of Medical Physics, Liverpool Cancer Centre, Sydney, New South Wales, Australia; South Western Sydney Clinical School, University of New South Wales, Sydney, New South Wales, Australia; Centre for Medical Radiation Physics, University of Wollongong, Wollongong, New South Wales, Australia; Cancer Research Team, Ingham Institute for Applied Medical Research, Sydney, New South Wales, Australia
| | - Dale Roach
- Department of Medical Physics, Liverpool Cancer Centre, Sydney, New South Wales, Australia; South Western Sydney Clinical School, University of New South Wales, Sydney, New South Wales, Australia; Cancer Research Team, Ingham Institute for Applied Medical Research, Sydney, New South Wales, Australia
| | - David J Joseph
- School of Surgery, University of Western Australia, Perth, Western Australia, Australia; 5D Clinics, Claremont, Perth, Western Australia, Australia; GenesisCare WA, Perth, Western Australia, Australia
| | - Sarah L Gulliford
- Radiotherapy Department, University College London Hospitals NHS Foundation Trust, London, United Kingdom; Department of Medical Physics and Biomedical Engineering, University College London, London, United Kingdom
| | - David P Dearnaley
- Academic UroOncology Unit, The Institute of Cancer Research and the Royal Marsden NHS Trust, London, United Kingdom
| | - Matthew R Sydes
- MRC Clinical Trials Unit, Institute of Clinical Trials and Methodology, University College London, London, United Kingdom
| | - Emma Hall
- Clinical Trials and Statistics Unit, The Institute of Cancer Research, London, United Kingdom
| | - Martin A Ebert
- Department of Physics, University of Western Australia, Perth, Western Australia, Australia; Department of Radiation Oncology, Sir Charles Gairdner Hospital, Perth, Western Australia, Australia; 5D Clinics, Claremont, Perth, Western Australia, Australia
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11
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Deek M, Lilleby W, Vaage V, Hole KH, DeWeese T, Stensvold A, Tran P, Seierstad T. Impact of radiation dose on recurrence in high-risk prostate cancer patients. Prostate 2020; 80:1322-1327. [PMID: 33258482 DOI: 10.1002/pros.24059] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/31/2020] [Accepted: 08/04/2020] [Indexed: 11/07/2022]
Abstract
BACKGROUND Dose escalated radiation therapy (RT) combined with long-term androgen deprivation therapy (ADT) is a standard of care option for men with high-risk and locally advanced prostate cancer (PCa). However, the optimal dose of escalated RT and ADT is not known. Here we assessed the impact of radiation dose and length of ADT on biochemical recurrence in a multi-institutional cohort stratified by the Cambridge prognostic group (CPG). We hypothesized that radiation dose and length of ADT would impact outcome in similar risk groups of our patients. METHODS Two-hundred and forty-four patients were included, 132 from Oslo University Hospital, Department of Oncology and 112 from Johns Hopkins Hospital, Department of Radiation Oncology. Biochemical recurrence was defined as prostate-specific antigen (PSA) nadir +2 ng/mL. Time to recurrence was estimated using Kaplan-Meier analysis and when stratified by CPG the log-rank test was used. Cox regression analysis was performed to identify factors associated with risk of recurrence. Site of recurrence was investigated. RESULTS The median follow-up time was 7.4 years. The vast majority (71%) of patients were classified as high-risk (CPG 4) or very high-risk features (CPG 5). Significantly more PSA recurrences occurred in CPG 5 (41%) compared with CPG 4 (25%) (P = .04) and five-year cumulative recurrence-free survival was lower for CPG 4 and 5 (89% and 68%) compared with CPG 1, 2, and 3 (100%, 100%, and 93%). The recurrence-free survival for CPG 5 was significantly higher for prostate irradiation of 80 Gy as compared with 74 Gy (P = .011). For CPG 4 and 5 no local recurrences were detected in patients receiving 80 Gy. On stepwise Cox regression analysis neither age nor length of ADT were independent prognostic factors for recurrence free survival. CONCLUSION Prostate dose escalation from 74 to 80 Gy decreases risk of recurrence in high-risk PCa. Further studies are needed to identify the optimal combination of ADT and RT.
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Affiliation(s)
- Matthew Deek
- Department of Radiation Oncology, Johns Hopkins Hospital, Baltimore, Maryland
| | - Wolfgang Lilleby
- Department of Oncology, Oslo University Hospital-Radium Hospital, Oslo, Norway
| | - Victoria Vaage
- Department of Oncology, Oslo University Hospital-Radium Hospital, Oslo, Norway
| | - Knut H Hole
- Department of Radiology, Oslo University Hospital-Radium Hospital, Oslo, Norway
- Faculty of Clinical Medicine, University of Oslo, Oslo, Norway
| | - Theodore DeWeese
- Department of Radiation Oncology, Johns Hopkins Hospital, Baltimore, Maryland
| | - Andreas Stensvold
- Department of Oncology, Østfold Hospital Trust, Kalnes, Østfold, Norway
| | - Phuoc Tran
- Department of Radiation Oncology, Johns Hopkins Hospital, Baltimore, Maryland
| | - Therese Seierstad
- Division for Radiology and Nuclear Medicine, Department of Research and Development, Oslo University Hospital, Oslo, Norway
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12
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Marcello M, Denham JW, Kennedy A, Haworth A, Steigler A, Greer PB, Holloway LC, Dowling JA, Jameson MG, Roach D, Joseph DJ, Gulliford SL, Dearnaley DP, Sydes MR, Hall E, Ebert MA. Relationships between rectal and perirectal doses and rectal bleeding or tenesmus in pooled voxel-based analysis of 3 randomised phase III trials. Radiother Oncol 2020; 150:281-292. [PMID: 32745667 DOI: 10.1016/j.radonc.2020.07.048] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2020] [Revised: 07/25/2020] [Accepted: 07/28/2020] [Indexed: 12/20/2022]
Abstract
BACKGROUND AND PURPOSE This study aimed to identify anatomically-localised regions where planned radiotherapy dose is associated with gastrointestinal toxicities in healthy tissues throughout the pelvic anatomy. MATERIALS AND METHODS Planned dose distributions for up to 657 patients of the Trans Tasman Radiation Oncology Group 03.04 RADAR trial were deformably registered onto a single exemplar computed tomography dataset. Voxel-based multiple comparison permutation dose difference testing, Cox regression modelling and LASSO feature selection were used to identify regions where dose-increase was associated with grade ≥2 rectal bleeding (RB) or tenesmus, according to the LENT/SOMA scale. This was externally validated by registering dose distributions from the RT01 (n = 388) and CHHiP (n = 241) trials onto the same exemplar and repeating the tests on each of these data sets, and on all three datasets combined. RESULTS Voxel-based Cox regression and permutation dose difference testing revealed regions where increased dose was correlated with gastrointestinal toxicity. Grade ≥2 RB was associated with posteriorly extended lateral beams that manifested high doses (>55 Gy) in a small rectal volume adjacent to the clinical target volume. A correlation was found between grade ≥2 tenesmus and increased low-intermediate dose (∼25 Gy) at the posterior beam region, including the posterior rectum and perirectal fat space (PRFS). CONCLUSIONS The serial response of the rectum with respect to RB has been demonstrated in patients with posteriorly extended lateral beams. Similarly, the parallel response of the PRFS with respect to tenesmus has been demonstrated in patients treated with the posterior beam.
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Affiliation(s)
- Marco Marcello
- Department of Physics, University of Western Australia, Crawley, Australia; Department of Radiation Oncology, Sir Charles Gairdner Hospital, Nedlands, Australia.
| | - James W Denham
- School of Medicine and Public Health, University of Newcastle, Callaghan, Australia
| | - Angel Kennedy
- Department of Radiation Oncology, Sir Charles Gairdner Hospital, Nedlands, Australia
| | - Annette Haworth
- School of Physics, University of Sydney, Camperdown, Australia
| | - Allison Steigler
- Prostate Cancer Trials Group, School of Medicine and Public Health, University of Newcastle, Callaghan, Australia
| | - Peter B Greer
- School of Mathematical and Physical Sciences, University of Newcastle, Callaghan, Australia; Department of Radiation Oncology, Calvary Mater Newcastle, Waratah, Australia
| | - Lois C Holloway
- Department of Medical Physics, Liverpool Cancer Centre, Australia; South Western Sydney Clinical School, University of New South Wales, Liverpool, Australia; Centre for Medical Radiation Physics, University of Wollongong, Australia
| | - Jason A Dowling
- School of Mathematical and Physical Sciences, University of Newcastle, Callaghan, Australia; CSIRO, Herston, Australia
| | - Michael G Jameson
- Department of Medical Physics, Liverpool Cancer Centre, Australia; South Western Sydney Clinical School, University of New South Wales, Liverpool, Australia; Centre for Medical Radiation Physics, University of Wollongong, Australia; Cancer Research Team, Ingham Institute for Applied Medical Research, Liverpool, Australia
| | - Dale Roach
- Department of Medical Physics, Liverpool Cancer Centre, Australia; South Western Sydney Clinical School, University of New South Wales, Liverpool, Australia; Cancer Research Team, Ingham Institute for Applied Medical Research, Liverpool, Australia
| | - David J Joseph
- School of Surgery, University of Western Australia, Crawley, Australia; 5D Clinics, Claremont, Australia; GenesisCare WA, Wembley, Australia
| | - Sarah L Gulliford
- Radiotherapy Department, University College London Hospitals NHS Foundation Trust, United Kingdom; Department of Medical Physics and Biomedical Engineering, University College London, United Kingdom
| | - David P Dearnaley
- Academic UroOncology Unit, The Institute of Cancer Research and the Royal Marsden NHS Trust, London, Australia
| | - Mathew R Sydes
- MRC Clinical Trials Unit, Institute of Clinical Trials and Methodology, University College, London, United Kingdom
| | - Emma Hall
- Clinical Trials and Statistics Unit, The Institute of Cancer Research, Sutton, United Kingdom
| | - Martin A Ebert
- Department of Physics, University of Western Australia, Crawley, Australia; Department of Radiation Oncology, Sir Charles Gairdner Hospital, Nedlands, Australia; 5D Clinics, Claremont, Australia
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13
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Marcello M, Denham JW, Kennedy A, Haworth A, Steigler A, Greer PB, Holloway LC, Dowling JA, Jameson MG, Roach D, Joseph DJ, Gulliford SL, Dearnaley DP, Sydes MR, Hall E, Ebert MA. Increased Dose to Organs in Urinary Tract Associates With Measures of Genitourinary Toxicity in Pooled Voxel-Based Analysis of 3 Randomized Phase III Trials. Front Oncol 2020; 10:1174. [PMID: 32793485 PMCID: PMC7387667 DOI: 10.3389/fonc.2020.01174] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/01/2020] [Accepted: 06/09/2020] [Indexed: 12/21/2022] Open
Abstract
Purpose: Dose information from organ sub-regions has been shown to be more predictive of genitourinary toxicity than whole organ dose volume histogram information. This study aimed to identify anatomically-localized regions where 3D dose is associated with genitourinary toxicities in healthy tissues throughout the pelvic anatomy. Methods and Materials: Dose distributions for up to 656 patients of the Trans-Tasman Radiation Oncology Group 03.04 RADAR trial were deformably registered onto a single exemplar CT dataset. Voxel- based multiple comparison permutation dose difference testing, Cox regression modeling and LASSO feature selection were used to identify regions where 3D dose-increase was associated with late grade ≥ 2 genitourinary dysuria, incontinence and frequency, and late grade ≥ 1 haematuria. This was externally validated by registering dose distributions from the RT01 (up to n = 388) and CHHiP (up to n = 247) trials onto the same exemplar and repeating the voxel-based tests on each of these data sets. All three datasets were then combined, and the tests repeated. Results: Voxel-based Cox regression and multiple comparison permutation dose difference testing revealed regions where increased dose was correlated with genitourinary toxicity. Increased dose in the vicinity of the membranous and spongy urethra was associated with dysuria for all datasets. Haematuria was similarly correlated with increased dose at the membranous and spongy urethra, for the RADAR, CHHiP, and combined datasets. Some evidence was found for the association between incontinence and increased dose at the internal and external urethral sphincter for RADAR and the internal sphincter alone for the combined dataset. Incontinence was also strongly correlated with dose from posterior oblique beams. Patients with fields extending inferiorly and posteriorly to the CTV, adjacent to the membranous and spongy urethra, were found to experience increased frequency. Conclusions: Anatomically-localized dose-toxicity relationships were determined for late genitourinary symptoms in the urethra and urinary sphincters. Low-intermediate doses to the extraprostatic urethra were associated with risk of late dysuria and haematuria, while dose to the urinary sphincters was associated with incontinence.
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Affiliation(s)
- Marco Marcello
- Department of Radiation Oncology, Sir Charles Gairdner Hospital, Nedlands, WA, Australia
- Department of Physics, University of Western Australia, Perth, WA, Australia
| | - James W. Denham
- School of Medicine and Public Health, University of Newcastle, Callaghan, NSW, Australia
| | - Angel Kennedy
- Department of Radiation Oncology, Sir Charles Gairdner Hospital, Nedlands, WA, Australia
| | - Annette Haworth
- School of Physics, University of Sydney, Sydney, NSW, Australia
| | - Allison Steigler
- Prostate Cancer Trials Group, School of Medicine and Public Health, University of Newcastle, Callaghan, NSW, Australia
| | - Peter B. Greer
- School of Mathematical and Physical Sciences, University of Newcastle, Callaghan, NSW, Australia
- Department of Radiation Oncology, Calvary Mater Newcastle, Waratah, NSW, Australia
| | - Lois C. Holloway
- Department of Medical Physics, Liverpool Cancer Centre, Liverpool, NSW, Australia
- South Western Sydney Clinical School, University of New South Wales, Kensington, NSW, Australia
- Centre for Medical Radiation Physics, University of Wollongong, Wollongong, NSW, Australia
| | - Jason A. Dowling
- School of Mathematical and Physical Sciences, University of Newcastle, Callaghan, NSW, Australia
- CSIRO, St Lucia, QLD, Australia
| | - Michael G. Jameson
- Department of Medical Physics, Liverpool Cancer Centre, Liverpool, NSW, Australia
- South Western Sydney Clinical School, University of New South Wales, Kensington, NSW, Australia
- Centre for Medical Radiation Physics, University of Wollongong, Wollongong, NSW, Australia
- Cancer Research Team, Ingham Institute for Applied Medical Research, Liverpool, NSW, Australia
| | - Dale Roach
- Department of Medical Physics, Liverpool Cancer Centre, Liverpool, NSW, Australia
- South Western Sydney Clinical School, University of New South Wales, Kensington, NSW, Australia
- Cancer Research Team, Ingham Institute for Applied Medical Research, Liverpool, NSW, Australia
| | - David J. Joseph
- School of Surgery, University of Western Australia, Perth, WA, Australia
- 5D Clinics, Claremont, WA, Australia
- GenesisCare WA, Wembley, WA, Australia
| | - Sarah L. Gulliford
- Radiotherapy Department, University College London Hospitals NHS Foundation Trust, London, United Kingdom
- Department of Medical Physics and Biomedical Engineering, University College London, London, United Kingdom
| | - David P. Dearnaley
- Academic UroOncology Unit, The Institute of Cancer Research and the Royal Marsden NHS Trust, London, United Kingdom
| | - Matthew R. Sydes
- MRC Clinical Trials Unit, Medical Research Council, London, United Kingdom
| | - Emma Hall
- Clinical Trials and Statistics Unit, The Institute of Cancer Research, London, United Kingdom
| | - Martin A. Ebert
- Department of Radiation Oncology, Sir Charles Gairdner Hospital, Nedlands, WA, Australia
- Department of Physics, University of Western Australia, Perth, WA, Australia
- 5D Clinics, Claremont, WA, Australia
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14
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Delahunt B, Murray JD, Steigler A, Atkinson C, Christie D, Duchesne G, Egevad L, Joseph D, Matthews J, Oldmeadow C, Samaratunga H, Spry NA, Srigley JR, Hondermarck H, Denham JW. Perineural invasion by prostate adenocarcinoma in needle biopsies predicts bone metastasis: Ten year data from the TROG 03.04 RADAR Trial. Histopathology 2020; 77:284-292. [PMID: 32285460 DOI: 10.1111/his.14107] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2020] [Revised: 03/08/2020] [Accepted: 03/17/2020] [Indexed: 11/28/2022]
Abstract
AIMS Perineural invasion (PNI) by prostatic adenocarcinoma is debated as a prognostic parameter. This study investigates the prognostic predictive value of PNI in a series of patients with locally advanced prostate cancer treated with radiotherapy and androgen deprivation using 10 years outcome data from the TROG 03.04 RADAR trial. METHODS Diagnostic prostate biopsies from 976 patients were reviewed and the presence of PNI noted. Patients were followed for 10 years according to the trial protocol or until death. The primary endpoint for the study was time to bone metastasis. Secondary endpoints included time to soft tissue metastasis, transition to castration resistance, prostate cancer-specific mortality and all-cause mortality. RESULTS PNI was detected in 449 cases (46%), with 234 cases (24%) having PNI in more than one core. The presence of PNI was significantly associated with higher ISUP grade, clinical T staging category, National Comprehensive Cancer Network risk group, and percent positive biopsy cores. The cumulative probability of bone metastases according to PNI status was significant over the 10 years follow-up interval of the study (log-rank test P < 0.0001). PNI was associated with all endpoints on univariable analysis. After adjusting for baseline clinicopathological and treatment factors, bone metastasis was the only endpoint in which PNI retained its prognostic significance (hazard ratio 1.42, 95% confidence interval 1.05-1.92, P = 0.021). CONCLUSIONS The association between PNI and the development of bone metastases supports the inclusion of this parameter as a component of the routine histology report. Further this association suggests that evaluation of PNI may assist in selecting those patients who should be monitored more closely during follow-up.
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Affiliation(s)
- Brett Delahunt
- Department of Pathology and Molecular Medicine and Health Sciences, University of Otago, Wellington, New Zealand
| | - Judith D Murray
- Department of Pathology and Molecular Medicine and Health Sciences, University of Otago, Wellington, New Zealand
| | - Allison Steigler
- School of Medicine and Public Health, University of Newcastle, Newcastle, New South Wales, Australia
| | - Chris Atkinson
- St Georges Cancer Care Centre, Christchurch, New Zealand
| | | | - Gillian Duchesne
- Peter MacCallum Cancer Centre, University of Melbourne, Victoria, Australia
| | - Lars Egevad
- Department of Oncology and Pathology, Karolinska Institute, Stockholm, Sweden
| | - David Joseph
- Sir Charles Gairdner Hospital, Perth, Western Australia, Australia
| | | | | | - Hemamali Samaratunga
- Aquesta Uropathology and University of Queensland, Brisbane, Queensland, Australia
| | - Nigel A Spry
- GenesisCare, Perth, Western Australia, Australia
| | - John R Srigley
- Department of Laboratory Medicine and Pathobiology and Molecular Medicine, University of Toronto, Toronto, ON, Canada
| | - Hubert Hondermarck
- Hunter Medical Research Institute, Newcastle, New South Wales, Australia.,School of Biomedical Sciences and Pharmacy, University of Newcastle, New South Wales, Australia
| | - James W Denham
- School of Medicine and Public Health, University of Newcastle, Newcastle, New South Wales, Australia
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15
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Panettieri V, Rancati T, Onjukka E, Ebert MA, Joseph DJ, Denham JW, Steigler A, Millar JL. External Validation of a Predictive Model of Urethral Strictures for Prostate Patients Treated With HDR Brachytherapy Boost. Front Oncol 2020; 10:910. [PMID: 32596153 PMCID: PMC7300245 DOI: 10.3389/fonc.2020.00910] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2020] [Accepted: 05/11/2020] [Indexed: 12/12/2022] Open
Abstract
Purpose: For prostate cancer treatment, comparable or superior biochemical control was reported when using External-Beam-Radiotherapy (EBRT) with High-Dose-Rate-Brachytherapy (HDRB)-boost, compared to dose-escalation with EBRT alone. The conformal doses produced by HDRB could allow further beneficial prostate dose-escalation, but increase in dose is limited by normal tissue toxicity. Previous works showed correlation between urethral dose and incidence of urinary toxicity, but there is a lack of established guidelines on the dose constraints to this organ. This work aimed at fitting a Normal-Tissue-Complication-Probability model to urethral stricture data collected at one institution and validating it with an external cohort, looking at neo-adjuvant androgen deprivation as dose-modifying factor. Materials and Methods: Clinical and dosimetric data of 258 patients, with a toxicity rate of 12.8%, treated at a single institution with a variety of prescription doses, were collected to fit the Lyman–Kutcher–Burman (LKB) model using the maximum likelihood method. Due to the different fractionations, doses were converted into 2 Gy-equivalent doses (α/β = 5 Gy), and urethral stricture was used as an end-point. For validation, an external cohort of 187 patients treated as part of the TROG (Trans Tasman Radiation Oncology Group) 03.04 RADAR trial with a toxicity rate of 8.7%, was used. The goodness of fit was assessed using calibration plots. The effect of neo-adjuvant androgen deprivation (AD) was analyzed separating patients who had received it prior to treatment from those who did not receive it. Results: The obtained LKB parameters were TD50 = 116.7 Gy and m = 0.23; n was fixed to 0.3, based on numerical optimization of the likelihood. The calibration plot showed a good agreement between the observed toxicity and the probability predicted by the model, confirmed by bootstrapping. For the external validation, the calibration plot showed that the observed toxicity obtained with the RADAR patients was well-represented by the fitted LKB model parameters. When patients were stratified by the use of AD TD50 decreased when AD was not present. Conclusions: Lyman–Kutcher–Burman model parameters were fitted to the risk of urethral stricture and externally validated with an independent cohort, to provide guidance on urethral tolerance doses for patients treated with a HDRB boost. For patients that did not receive AD, model fitting provided a lower TD50 suggesting a protective effect on urethra toxicity.
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Affiliation(s)
- Vanessa Panettieri
- Alfred Health Radiation Oncology, Alfred Hospital, Melbourne, VIC, Australia.,Medical Imaging and Radiation Sciences, Monash University, Clayton, VIC, Australia
| | - Tiziana Rancati
- Prostate Cancer Program, Scientific Directorate, Fondazione IRCCS Istituto Nazionale dei Tumori, Milan, Italy
| | - Eva Onjukka
- Medical Radiation Physics and Nuclear Medicine, Karolinska University Hospital, Stockholm, Sweden
| | - Martin A Ebert
- Radiation Oncology, Sir Charles Gairdner Hospital, Perth, WA, Australia.,School of Physics, Mathematics and Computing, University of Western Australia, Perth, WA, Australia.,5D Clinics, Claremont, WA, Australia
| | - David J Joseph
- 5D Clinics, Claremont, WA, Australia.,GenesisCare, Subiaco, WA, Australia.,School of Surgery, University of Western Australia, WA, Australia
| | - James W Denham
- School of Medicine and Public Health, University of Newcastle, Newcastle, NSW, Australia
| | - Allison Steigler
- School of Medicine and Public Health, University of Newcastle, Newcastle, NSW, Australia
| | - Jeremy L Millar
- Alfred Health Radiation Oncology, Alfred Hospital, Melbourne, VIC, Australia.,Central Clinical School, Monash University, Melbourne, VIC, Australia
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Joseph D, Denham JW, Steigler A, Lamb DS, Spry NA, Stanley J, Shannon T, Duchesne G, Atkinson C, Matthews JH, Turner S, Kenny L, Christie D, Tai KH, Gogna NK, Kearvell R, Murray J, Ebert MA, Haworth A, Delahunt B, Oldmeadow C, Attia J. Radiation Dose Escalation or Longer Androgen Suppression to Prevent Distant Progression in Men With Locally Advanced Prostate Cancer: 10-Year Data From the TROG 03.04 RADAR Trial. Int J Radiat Oncol Biol Phys 2020; 106:693-702. [DOI: 10.1016/j.ijrobp.2019.11.415] [Citation(s) in RCA: 27] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2019] [Revised: 11/17/2019] [Accepted: 11/21/2019] [Indexed: 10/25/2022]
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Alexidis P, Dragoumis D, Karatzoglou S, Drevelegas K, Tzitzikas I, Hatzimouratidis K, Chrisogonidis I, Giannakidis D, Koulouris C, Katsaounis A, Michalopoulos N, Huang H, Li Q, Aidoini Z, Fyntanidou V, Amaniti A, Hohenforst-Schmidt W, Maragouli E, Petanidis S, Zarogoulidis P, Sapalidis K, Kosmidis C, Romanidis K, Oinkonomou P, Vagionas A, Nikolaos-Katsios I, Ioannidis A, Boniou K, Kesisoglou I. The role of hypofractionated radiotherapy for the definitive treatment of localized prostate cancer: early results of a randomized trial. J Cancer 2019; 10:6217-6224. [PMID: 31772654 PMCID: PMC6856757 DOI: 10.7150/jca.35510] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2019] [Accepted: 08/25/2019] [Indexed: 02/07/2023] Open
Abstract
Background: Prostate cancer is considered to have a special biology which could affect the radiation therapy result based on the selected fractionation scheme. We present the preliminary results of a randomized trial comparing conventionally and hypofractionated radiation therapy for prostate cancer. Methods: Patients included in the study had localized prostate cancer (cT1c-T3bN0M0) and were randomly assigned to mild hypofractionated (72 Gy in 32 fractions, arm1) or conventionally fractionated (74 Gy in 37 fractions, arm2) radiation therapy treatment with Volumetric Arc Therapy technique. The treatment was delivered only to the prostate with or without the seminal vesicles according to physician's discretion and hormone therapy was optional according to the disease stage and comorbidities. Here we present the preliminary results of acute toxicity from the gastrointestinal (GI) and genitourinary (GU) system. Results: Between 2015 and 2016, 139 patients were enrolled. 67 patients were treated with conventional fractionation and 72 were treated with hypofractionation. Grade≥ 2 toxicity from GU and GI was observed in 23 and 21 patients (31,9% vs 31,3%, p=0,79) and 15 and 12 (20,8% vs 17,9%, p=0,6) for arm1 and arm2 respectively. No statistically significant differences were observed between arms in the incidence of early toxicity. There was no correlation observed between patient characteristics and toxicity from either GU or GI. Conclusions: Hypofractionated radiotherapy appears to be equally tolerated compared to conventional fractionation in the early setting. Longer follow up is needed to assess the late toxicity profile of the patients and any potential differences between the control and experimental arm.
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Affiliation(s)
- Petros Alexidis
- Department of Radiation Oncology, Interbalkan European Medical Center; Thessaloniki, Greece
| | - Dimitris Dragoumis
- Neurosurgical Department, ``G. Papanikolaou`` General Hospital, Thessaloniki, Greece
| | - Sotirios Karatzoglou
- Neurosurgical Department, ``G. Papanikolaou`` General Hospital, Thessaloniki, Greece
| | | | - Ioannis Tzitzikas
- Department of Radiation Oncology, AHEPA University Hospital of Thessaloniki, Faculty of Medicine, School of Health Sciences, Aristotle University of Thessaloniki, Greece
| | - Konstantinos Hatzimouratidis
- Department of Urology, Papageorgiou hospital of Thessaloniki, Faculty of Medicine, School of Health Sciences, Aristotle University of Thessaloniki, Greece
| | - Ioannis Chrisogonidis
- 3rd Department of Surgery, AHEPA University Hospital, Aristotle University of Thessaloniki, Medical School, Thessaloniki, Greece
| | - Dimitris Giannakidis
- 3rd Department of Surgery, AHEPA University Hospital, Aristotle University of Thessaloniki, Medical School, Thessaloniki, Greece
| | - Charilaos Koulouris
- 3rd Department of Surgery, AHEPA University Hospital, Aristotle University of Thessaloniki, Medical School, Thessaloniki, Greece
| | - Athanasios Katsaounis
- 3rd Department of Surgery, AHEPA University Hospital, Aristotle University of Thessaloniki, Medical School, Thessaloniki, Greece
| | - Nikolaos Michalopoulos
- 3rd Department of Surgery, AHEPA University Hospital, Aristotle University of Thessaloniki, Medical School, Thessaloniki, Greece
| | - Haidong Huang
- The Diagnostic and Therapeutic Center of Respiratory Diseases, Shanghai East Hospital, Tongji University, Shanghai, China
| | - Qiang Li
- The Diagnostic and Therapeutic Center of Respiratory Diseases, Shanghai East Hospital, Tongji University, Shanghai, China
| | - Zoi Aidoini
- 3rd Department of Surgery, AHEPA University Hospital, Aristotle University of Thessaloniki, Medical School, Thessaloniki, Greece
| | - Varbara Fyntanidou
- Anesthisiology Department, AHEPA University Hospital, Aristotle University of Thessaloniki, Medical School; Thessaloniki, Greece
| | - Aikaterini Amaniti
- Anesthisiology Department, AHEPA University Hospital, Aristotle University of Thessaloniki, Medical School; Thessaloniki, Greece
| | - Wolfgang Hohenforst-Schmidt
- Sana Clinic Group Franken, Department of Cardiology/Pulmonology/Intensive Care/Nephrology, "Hof" Clinics, University of Erlangen, Hof, Germany
| | - Elena Maragouli
- Oncology Department, University of Thessali, Larissa, Greece
| | - Savvas Petanidis
- Department of Pulmonology, I.M. Sechenov First Moscow State Medical University; Moscow, 119992, Russian Federation
| | - Paul Zarogoulidis
- 3rd Department of Surgery, AHEPA University Hospital, Aristotle University of Thessaloniki, Medical School, Thessaloniki, Greece
| | - Konstantinos Sapalidis
- 3rd Department of Surgery, AHEPA University Hospital, Aristotle University of Thessaloniki, Medical School, Thessaloniki, Greece
| | - Christoforos Kosmidis
- 3rd Department of Surgery, AHEPA University Hospital, Aristotle University of Thessaloniki, Medical School, Thessaloniki, Greece
| | - Konstantinos Romanidis
- Second Department of Surgery, University Hospital of Alexandroupolis, Medical School, Democritus University of Thrace, 68100 Alexandroupolis, Greece
| | - Panagoula Oinkonomou
- Second Department of Surgery, University Hospital of Alexandroupolis, Medical School, Democritus University of Thrace, 68100 Alexandroupolis, Greece
| | | | - Iason Nikolaos-Katsios
- 3rd Department of Surgery, AHEPA University Hospital, Aristotle University of Thessaloniki, Medical School, Thessaloniki, Greece
| | - Aris Ioannidis
- 3rd Department of Surgery, AHEPA University Hospital, Aristotle University of Thessaloniki, Medical School, Thessaloniki, Greece
| | - Konstantina Boniou
- Radiology Department, ``Theageneio`` Cancer Hospital, Thessaloniki, Greece
| | - Isaak Kesisoglou
- 3rd Department of Surgery, AHEPA University Hospital, Aristotle University of Thessaloniki, Medical School, Thessaloniki, Greece
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Hypofractionated radiotherapy versus conventional radiotherapy in patients with intermediate- to high-risk localized prostate cancer: a meta-analysis of randomized controlled trials. BMC Cancer 2019; 19:1063. [PMID: 31703647 PMCID: PMC6839052 DOI: 10.1186/s12885-019-6285-x] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2019] [Accepted: 10/24/2019] [Indexed: 01/08/2023] Open
Abstract
Background Prostate cancer is one of the most common cancers in the world. The results of treatment after hypofractionated radiotherapy only have been reported from several small randomized clinical trials. Therefore, we conducted a meta-analysis to compare clinical outcomes of hypofractionated radiotherapy versus conventional radiotherapy in the treatment of intermediate- to high-risk localized prostate cancer. Methods Relevant studies were identified through searching related databases till August 2018. Hazard ratio (HR) or risk ratio (RR) with its corresponding 95% confidence interval (CI) was used as pooled statistics for all analyses. Results The meta-analysis results showed that overall survival (HR = 1.12, 95% CI: 0.93–1.35, p = 0.219) and prostate cancer-specific survival (HR = 1.29, 95% CI: 0.42–3.95, p = 0.661) were similar in two groups. The pooled data showed that biochemical failure was RR = 0.90, 95% CI: 0.76–1.07, p = 0.248. The incidence of acute adverse gastrointestinal events (grade ≥ 2) was higher in the hypofractionated radiotherapy (RR = 1.70, 95% CI: 1.12–2.56, p = 0.012); conversely, for late grade ≥ 2 gastrointestinal adverse events, a significant increase in the conventional radiotherapy was found (RR = 0.75, 95% CI: 0.61–0.91, p = 0.003). Acute (RR = 1.01, 95% CI: 0.89–1.15, p = 0.894) and late (RR = 0.98, 95% CI: 0.86–1.10, p = 0.692) genitourinary adverse events (grade ≥ 2) were similar for both treatment groups. Conclusion Results suggest that the efficacy and risk for adverse events are comparable for hypofractionated radiotherapy and conventional radiotherapy in the treatment of intermediate- to high-risk localized prostate cancer.
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Dess RT, Soni PD, Jackson WC, Berlin A, Cox BW, Jolly S, Efstathiou JA, Feng FY, Kishan AU, Stish BJ, Pisansky TM, Spratt DE. The current state of randomized clinical trial evidence for prostate brachytherapy. Urol Oncol 2019; 37:599-610. [PMID: 31060795 DOI: 10.1016/j.urolonc.2019.04.009] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2018] [Revised: 03/26/2019] [Accepted: 04/09/2019] [Indexed: 02/06/2023]
Abstract
Interstitial brachytherapy is one of several curative therapeutic options for the treatment of localized prostate cancer. In this review, we summarize all available randomized data to support the optimal use of prostate brachytherapy. Evidence from completed randomized controlled trials is the focus of this review with a presentation also of important ongoing trials. Gaps in knowledge are identified where future investigation may be fruitful with intent to inspire well-designed prospective studies with standardized treatment that focuses on improving oncological outcomes, reducing morbidity, or maintaining quality of life.
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Affiliation(s)
- Robert T Dess
- Department of Radiation Oncology, University of Michigan, Ann Arbor, MI.
| | - Payal D Soni
- Department of Radiation Oncology, Hunter Holmes McGuire VA Medical Center, Richmond, VA
| | - William C Jackson
- Department of Radiation Oncology, University of Michigan, Ann Arbor, MI
| | - Alejandro Berlin
- Department of Radiation Oncology, University of Toronto, Toronto, Canada
| | - Brett W Cox
- Department of Radiation Medicine, Northwell Health, Hofstra Northwell School of Medicine, Hempstead, NY
| | - Shruti Jolly
- Department of Radiation Oncology, University of Michigan, Ann Arbor, MI
| | - Jason A Efstathiou
- Department of Radiation Oncology, Massachusetts General Hospital, Boston, MA
| | - Felix Y Feng
- Departments of Radiation Oncology, Urology and Medicine, University of California San Francisco, San Francisco, CA
| | - Amar U Kishan
- Department of Radiation Oncology, University of California Los Angeles, Los Angeles, CA
| | - Bradley J Stish
- Department of Radiation Oncology, Mayo Clinic, Rochester, MN
| | | | - Daniel E Spratt
- Department of Radiation Oncology, University of Michigan, Ann Arbor, MI
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Short-term androgen suppression and radiotherapy versus intermediate-term androgen suppression and radiotherapy, with or without zoledronic acid, in men with locally advanced prostate cancer (TROG 03.04 RADAR): 10-year results from a randomised, phase 3, factorial trial. Lancet Oncol 2018; 20:267-281. [PMID: 30579763 DOI: 10.1016/s1470-2045(18)30757-5] [Citation(s) in RCA: 73] [Impact Index Per Article: 12.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2018] [Revised: 10/03/2018] [Accepted: 10/04/2018] [Indexed: 01/23/2023]
Abstract
BACKGROUND The optimal duration of androgen suppression for men with locally advanced prostate cancer receiving radiotherapy with curative intent is yet to be defined. Zoledronic acid is effective in preventing androgen suppression-induced bone loss, but its role in preventing castration-sensitive bone metastases in locally advanced prostate cancer is unclear. The RADAR trial assessed whether the addition of 12 months of adjuvant androgen suppression, 18 months of zoledronic acid, or both, can improve outcomes in men with locally advanced prostate cancer who receive 6 months of androgen suppression and prostatic radiotherapy. This report presents 10-year outcomes from this trial. METHODS For this randomised, phase 3, 2 × 2 factorial trial, eligible men were 18 years or older with locally advanced prostate cancer (either T2b-4, N0 M0 tumours or T2a, N0 M0 tumours provided Gleason score was ≥7 and baseline prostate-specific antigen [PSA] concentration was ≥10 μg/L). We randomly allocated participants in a 2 × 2 factorial design by computer-generated randomisation (using the minimisation technique, and stratified by centre, baseline PSA concentration, clinical tumour stage, Gleason score, and use of a brachytherapy boost) in a 1:1:1:1 ratio to four treatment groups. Patients in the control group received 6 months of neoadjuvant androgen suppression with leuprorelin (22·5 mg every 3 months, intramuscularly) and radiotherapy alone (short-term androgen suppression [STAS]); this treatment was either followed by another 12 months of adjuvant androgen suppression with leuprorelin (22·5 mg every 3 months, intramuscularly; intermediate-term androgen suppression [ITAS]), or accompanied by 18 months of zoledronic acid (4 mg every 3 months, intravenously) starting at randomisation (STAS plus zoledronic acid), or both (ITAS plus zoledronic acid). All patients received radiotherapy to the prostate and seminal vesicles, starting from the end of the fifth month of androgen suppression; dosing options were 66, 70, and 74 Gy in 2-Gy fractions per day, or 46 Gy in 2-Gy fractions followed by a high-dose-rate brachytherapy boost dose of 19·5 Gy in 6·5-Gy fractions. Treatment allocation was open label. The primary endpoint was prostate cancer-specific mortality and was analysed according to intention-to-treat using competing-risks methods. The trial is closed to follow-up and this is the final report of the main endpoints. This trial is registered with ClinicalTrials.gov, number NCT00193856. FINDINGS Between Oct 20, 2003, and Aug 15, 2007, 1071 men were enrolled and randomly assigned to STAS (n=268), ITAS (n=268), STAS plus zoledronic acid (n=268), and ITAS plus zoledronic acid (n=267). Median follow-up was 10·4 years (IQR 7·9-11·7). At this 10-year follow-up, no interactions were observed between androgen suppression and zoledronic acid so the treatment groups were collapsed to compare treatments according to duration of androgen suppression: 6 months of androgen suppression plus radiotherapy (6AS+RT) versus 18 months of androgen suppression plus radiotherapy (18AS+RT) and to compare treatments according to whether or not patients received zoledronic acid. The total number of deaths was 375 (200 men receiving 6AS+RT and 175 men receiving 18AS+RT), of which 143 (38%) were attributable to prostate cancer (81 men receiving 6AS+RT and 62 men receiving 18AS+RT). When analysed by duration of androgen suppression, the adjusted cumulative incidence of prostate cancer-specific mortality was 13·3% (95% CI 10·3-16·0) for 6AS+RT versus 9·7% (7·3-12·0) for 18AS+RT, representing an absolute difference of 3·7% (95% CI 0·3-7·1; sub-hazard ratio [sHR] 0·70 [95% CI 0·50-0·98], adjusted p=0·035). The addition of zoledronic acid did not affect prostate cancer-specific mortality; the adjusted cumulative incidence of prostate cancer-specific mortality was 11·2% (95% CI 8·7-13·7) with zoledronic acid vs 11·7% (9·2-14·1) without, representing an absolute difference of -0·5% (95% CI -3·8 to 2·9; sHR 0·95 [95% CI 0·69-1·32], adjusted p=0·78). Although safety analysis was not prespecified for this 10-year analysis, one new serious adverse event (osteonecrosis of the mandible, in a patient who received 18 months of androgen suppression plus zoledronic acid) occurred since our previous report, bringing the total number of cases of this serious adverse event to three (<1% out of 530 patients who received zoledronic acid evaluated for safety) and the total number of drug-related serious adverse events to 12 (1% out of all 1065 patients evaluable for safety). No treatment-related deaths occurred during the study. INTERPRETATION 18 months of androgen suppression plus radiotherapy is a more effective treatment option for locally advanced prostate cancer than 6 months of androgen suppression plus radiotherapy, but the addition of zoledronic acid to this treatment regimen is not beneficial. Evidence from the RADAR and French Canadian Prostate Cancer Study IV trials suggests that 18 months of androgen suppression with moderate radiation dose escalation is an effective but more tolerable option than longer durations of androgen suppression for men with locally advanced prostate cancer including intermediate and high risk elements. FUNDING National Health and Medical Research Council of Australia, Novartis Pharmaceuticals Australia, AbbVie Pharmaceuticals Australia, New Zealand Health Research Council, New Zealand Cancer Society, Cancer Standards Institute New Zealand, University of Newcastle (Australia), Hunter Medical Research Institute, Calvary Mater Newcastle Radiation Oncology Fund, and Maitland Cancer Appeal.
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Rozet F, Hennequin C, Beauval JB, Beuzeboc P, Cormier L, Fromont-Hankard G, Mongiat-Artus P, Ploussard G, Mathieu R, Brureau L, Ouzzane A, Azria D, Brenot-Rossi I, Cancel-Tassin G, Cussenot O, Rebillard X, Lebret T, Soulié M, Penna RR, Méjean A. RETRACTED: Recommandations françaises du Comité de Cancérologie de l’AFU – Actualisation 2018–2020 : cancer de la prostate French ccAFU guidelines – Update 2018–2020: Prostate cancer. Prog Urol 2018; 28:S79-S130. [PMID: 30392712 DOI: 10.1016/j.purol.2018.08.011] [Citation(s) in RCA: 33] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2018] [Accepted: 08/14/2018] [Indexed: 12/31/2022]
Abstract
This article has been retracted: please see Elsevier Policy on Article Withdrawal (http://www.elsevier.com/locate/withdrawalpolicy).
Cet article est retiré de la publication à la demande des auteurs car ils ont apporté des modifications significatives sur des points scientifiques après la publication de la première version des recommandations.
Le nouvel article est disponible à cette adresse: DOI:10.1016/j.purol.2019.01.007.
C’est cette nouvelle version qui doit être utilisée pour citer l’article.
This article has been retracted at the request of the authors, as it is not based on the definitive version of the text because some scientific data has been corrected since the first issue was published.
The replacement has been published at the DOI:10.1016/j.purol.2019.01.007.
That newer version of the text should be used when citing the article.
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Affiliation(s)
- F Rozet
- Comité de cancérologie de l'Association française d'urologie, groupe prostate, maison de l'urologie, 11, rue Viète, 75017, Paris, France; Service d'urologie, institut mutualiste Montsouris, université René-Descartes, 42, boulevard Jourdan, 75674, Paris, France.
| | - C Hennequin
- Comité de cancérologie de l'Association française d'urologie, groupe prostate, maison de l'urologie, 11, rue Viète, 75017, Paris, France; Service de radiothérapie, Saint-Louis Hospital, AP-HP, 75010, Paris, France
| | - J-B Beauval
- Comité de cancérologie de l'Association française d'urologie, groupe prostate, maison de l'urologie, 11, rue Viète, 75017, Paris, France; Service d'urologie, oncologie médicale, institut universitaire du cancer Toulouse-Oncopole, CHU Rangueil, 31100, Toulouse, France
| | - P Beuzeboc
- Comité de cancérologie de l'Association française d'urologie, groupe prostate, maison de l'urologie, 11, rue Viète, 75017, Paris, France; Service d'urologie, hôpital Foch, 92150, Suresnes, France
| | - L Cormier
- Comité de cancérologie de l'Association française d'urologie, groupe prostate, maison de l'urologie, 11, rue Viète, 75017, Paris, France; Service d'urologie, CHU François-Mitterrand, 21000, Dijon, France
| | - G Fromont-Hankard
- Comité de cancérologie de l'Association française d'urologie, groupe prostate, maison de l'urologie, 11, rue Viète, 75017, Paris, France; CHU de Tours, 2, boulevard Tonnellé, 37000, Tours, France
| | - P Mongiat-Artus
- Comité de cancérologie de l'Association française d'urologie, groupe prostate, maison de l'urologie, 11, rue Viète, 75017, Paris, France; Service d'urologie, hôpital Saint-Louis, 1, avenue Claude-Vellefaux, Paris cedex 10, France
| | - G Ploussard
- Comité de cancérologie de l'Association française d'urologie, groupe prostate, maison de l'urologie, 11, rue Viète, 75017, Paris, France; Service d'urologie, clinique La Croix du Sud-Saint-Jean Languedoc, institut universitaire du cancer, 31100, Toulouse, France
| | - R Mathieu
- Comité de cancérologie de l'Association française d'urologie, groupe prostate, maison de l'urologie, 11, rue Viète, 75017, Paris, France; Service d'urologie, hôpital de Rennes, 2, rue Henri-le-Guilloux, 35033, Rennes cedex 9, France
| | - L Brureau
- Comité de cancérologie de l'Association française d'urologie, groupe prostate, maison de l'urologie, 11, rue Viète, 75017, Paris, France; Inserm, U1085, IRSET, 97145 Pointe-à-Pitre, Guadeloupe
| | - A Ouzzane
- Comité de cancérologie de l'Association française d'urologie, groupe prostate, maison de l'urologie, 11, rue Viète, 75017, Paris, France; Service d'urologie, hôpital Claude-Huriez, CHRU de Lille, rue Michel-Polonovski, 59000, Lille, France
| | - D Azria
- Comité de cancérologie de l'Association française d'urologie, groupe prostate, maison de l'urologie, 11, rue Viète, 75017, Paris, France; Inserm U1194, ICM, université de Montpellier, 34298, Montpellier, France
| | - I Brenot-Rossi
- Comité de cancérologie de l'Association française d'urologie, groupe prostate, maison de l'urologie, 11, rue Viète, 75017, Paris, France; Institut Paoli-Calmettes, 232, boulevard de Sainte-Marguerite, 13009, Marseille, France
| | - G Cancel-Tassin
- Comité de cancérologie de l'Association française d'urologie, groupe prostate, maison de l'urologie, 11, rue Viète, 75017, Paris, France; GRC no 5 ONCOTYPE-URO, institut universitaire de cancérologie, Sorbonne université, 75020, Paris, France
| | - O Cussenot
- Comité de cancérologie de l'Association française d'urologie, groupe prostate, maison de l'urologie, 11, rue Viète, 75017, Paris, France; Service d'urologie, hôpital Tenon, AP-HP, Sorbonne université, 75020, Paris, France
| | - X Rebillard
- Comité de cancérologie de l'Association française d'urologie, groupe prostate, maison de l'urologie, 11, rue Viète, 75017, Paris, France; Service d'urologie, clinique mutualiste Beau-Soleil, 119, avenue de Lodève, 34070, Montpellier, France
| | - T Lebret
- Comité de cancérologie de l'Association française d'urologie, groupe prostate, maison de l'urologie, 11, rue Viète, 75017, Paris, France; Service d'urologie, hôpital Foch, 92150, Suresnes, France
| | - M Soulié
- Comité de cancérologie de l'Association française d'urologie, groupe prostate, maison de l'urologie, 11, rue Viète, 75017, Paris, France; Centre hospitalier universitaire Rangueil, 31059, Toulouse, France
| | - R Renard Penna
- Comité de cancérologie de l'Association française d'urologie, groupe prostate, maison de l'urologie, 11, rue Viète, 75017, Paris, France; GRC no 5 ONCOTYPE-URO, institut universitaire de cancérologie, Sorbonne université, 75020, Paris, France; Service de radiologie, hôpital Tenon, AP-HP, 75020, Paris, France
| | - A Méjean
- Comité de cancérologie de l'Association française d'urologie, groupe prostate, maison de l'urologie, 11, rue Viète, 75017, Paris, France; Service d'urologie, hôpital européen Georges-Pompidou, université Paris Descartes, Assistance publique des hôpitaux de Paris (AP-HP), 75015, Paris, France
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Rozet F, Hennequin C, Beauval JB, Beuzeboc P, Cormier L, Fromont-Hankard G, Mongiat-Artus P, Ploussard G, Mathieu R, Brureau L, Ouzzane A, Azria D, Brenot-Rossi I, Cancel-Tassin G, Cussenot O, Rebillard X, Lebret T, Soulié M, Renard Penna R, Méjean A. Recommandations françaises du Comité de Cancérologie de l’AFU – Actualisation 2018–2020 : cancer de la prostate. Prog Urol 2018; 28 Suppl 1:R81-R132. [DOI: 10.1016/j.purol.2019.01.007] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2018] [Accepted: 08/14/2018] [Indexed: 01/02/2023]
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Marcello M, Ebert M, Haworth A, Steigler A, Kennedy A, Joseph D, Denham J. Association between treatment planning and delivery factors and disease progression in prostate cancer radiotherapy: Results from the TROG 03.04 RADAR trial. Radiother Oncol 2018; 126:249-256. [DOI: 10.1016/j.radonc.2017.10.021] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2017] [Revised: 10/16/2017] [Accepted: 10/16/2017] [Indexed: 11/25/2022]
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Böhmer D, Wirth M, Miller K, Budach V, Heidenreich A, Wiegel T. Radiotherapy and Hormone Treatment in Prostate Cancer. DEUTSCHES ARZTEBLATT INTERNATIONAL 2018; 113:235-41. [PMID: 27146591 DOI: 10.3238/arztebl.2016.0235] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/12/2015] [Revised: 01/20/2016] [Accepted: 01/20/2016] [Indexed: 02/07/2023]
Abstract
BACKGROUND Prostate cancer has the highest incidence of any type of cancer in Germany; an estimated 67 000 new diagnoses of prostate cancer will be made in 2016. In the current German S3 guideline for the treatment of prostate cancer, radiotherapy-sometimes in combination with androgen deprivation therapy (ADT)-is one of the two recommended options for treatment with curative intent (the other is radical prostatectomy). There have been many publications on this subject, yet it is still often unclear in routine practice how ADT should be administered, and for how long. METHODS This review is based on publications retrieved by a selective literature search, with special attention to controlled trials. RESULTS For low risk patients, radiotherapy without ADT is indicated (evidence level 1). Patients with localized prostate cancer and an intermediate risk benefit from radiotherapy combined with a four-to-six-month course of ADT. In this situation, a higher radiation dose might be an effective substitute for ADT (evidence level 1-2). For patients at high risk, radiotherapy combined with long-term hormonal treatment is the standard therapy, as it significantly improves all oncological end points (evidence level 1). For example, in the largest randomized and controlled trial, this form of treatment reduced cancer-specific mortality from 19% to 9% . Higher radiation doses of 66-74 Gy and longer ADT can improve local control at the cost of increased urethral toxicity. CONCLUSION Androgen deprivation combined with external beam radiotherapy is a curative standard option for patients with prostate cancer who are at high risk of recurrence. The modern radiotherapeutic techniques that are now available, such as intensity-modulated radiotherapy, enable a further improvement of the risk/benefit ratio.
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Affiliation(s)
- Dirk Böhmer
- Department of Radiation Oncology and Radiotherapy, Charité-Universitätsmedizin Berlin, Department of Urology, University Hospital Carl Gustav Carus, Dresden, Department of Urology, Charité Universitätsmedizin, Berlin, Department of Urology, Uniklinik RWTH Aachen, Department of Radiation Oncology, University Hospital Ulm
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25
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Tanino T, Uchida N. [7. Radiation Therapy for Prostate Cancer]. Nihon Hoshasen Gijutsu Gakkai Zasshi 2018; 74:84-93. [PMID: 29353840 DOI: 10.6009/jjrt.2018_jsrt_74.1.84] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Tomohiko Tanino
- Division of radiology, Department of Pathophysiological and Therapeutic Science, Faculty of Medicine, Tottori University
| | - Nobue Uchida
- Division of radiology, Department of Pathophysiological and Therapeutic Science, Faculty of Medicine, Tottori University
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26
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Pinkawa M. Zoledronic Acid in First-Line Treatment of Prostate Cancer. Int J Radiat Oncol Biol Phys 2018; 97:6-8. [PMID: 27979458 DOI: 10.1016/j.ijrobp.2016.06.2453] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2016] [Accepted: 06/22/2016] [Indexed: 11/16/2022]
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Marcello M, Ebert MA, Haworth A, Steigler A, Kennedy A, Bulsara M, Kearvell R, Joseph DJ, Denham JW. Association between measures of treatment quality and disease progression in prostate cancer radiotherapy: An exploratory analysis from the TROG 03.04 RADAR trial. J Med Imaging Radiat Oncol 2017; 62:248-255. [PMID: 29222833 DOI: 10.1111/1754-9485.12695] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2017] [Accepted: 11/07/2017] [Indexed: 11/28/2022]
Abstract
INTRODUCTION Quality assurance methods are incorporated into multicentre radiotherapy clinical trials for ensuring consistent application of trial protocol and quantifying treatment uncertainties. The study's purpose was to determine whether post-treatment disease progression is associated with measures of the quality of radiotherapy treatment. METHODS The TROG 03.04 RADAR trial tested the impact of androgen deprivation on prostate cancer patients receiving dose-escalated external beam radiation therapy. The trial incorporated a plan-review process and Level III dosimetric intercomparison at each centre, from which variables suggestive of treatment quality were collected. Kaplan-Meier statistics and Fine and Gray competing risk modelling were employed to test for associations between quality-related variables and the participant outcome local composite progression. RESULTS Increased 'dose-difference' at the prostatic apex and at the anterior rectal wall, between planned and measured dose, was associated with reduced progression. Participants whose treatment plans included clinical target volume (CTV) to planning target volume (PTV) margins exceeding protocol requirements also experienced reduced progression. Other quality-related variables, including total accrual from participating centres, measures of target coverage and other variations from protocol, were not significantly associated with progression. CONCLUSIONS This analysis has revealed the association of several treatment quality factors with disease progression. Increased dose and dose margin coverage in the prostate region can reduce disease progression. Extensive and rigorous monitoring has helped to maximise treatment quality, reducing the incidence of quality-indicator outliers, and thus reduce the chance of observing significant associations with progression rates.
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Affiliation(s)
- Marco Marcello
- Department of Radiation Oncology, Sir Charles Gairdner Hospital, Perth, Western Australia, Australia.,School of Physics, University of Western Australia, Crawley, Western Australia, Australia
| | - Martin A Ebert
- Department of Radiation Oncology, Sir Charles Gairdner Hospital, Perth, Western Australia, Australia.,School of Physics, University of Western Australia, Crawley, Western Australia, Australia
| | - Annette Haworth
- School of Physics, University of Sydney, Sydney, New South Wales, Australia
| | - Allison Steigler
- Prostate Cancer Trials Group, Faculty of Health, University of Newcastle, Callaghan, New South Wales, Australia
| | - Angel Kennedy
- Department of Radiation Oncology, Sir Charles Gairdner Hospital, Perth, Western Australia, Australia
| | - Max Bulsara
- Institute for Health Research, University of Notre Dame, Fremantle, Western Australia, Australia
| | - Rachel Kearvell
- Department of Radiation Oncology, Sir Charles Gairdner Hospital, Perth, Western Australia, Australia
| | - David J Joseph
- Department of Radiation Oncology, Sir Charles Gairdner Hospital, Perth, Western Australia, Australia.,School of Surgery, University of Western Australia, Crawley, Western Australia, Australia
| | - James W Denham
- School of Medicine and Public Health, University of Newcastle, Callaghan, New South Wales, Australia
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Tomita N, Soga N, Ogura Y, Furusawa J, Shimizu H, Adachi S, Tanaka H, Kato D, Koide Y, Makita C, Tachibana H, Kodaira T. Effects of dose-escalated radiotherapy in combination with long-term androgen deprivation on prostate cancer. Br J Radiol 2017; 91:20170431. [PMID: 29166142 DOI: 10.1259/bjr.20170431] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022] Open
Abstract
OBJECTIVE We aimed to examine the effects of a dose escalation for prostate cancer patients receiving long-term androgen deprivation therapy (ADT). METHODS A retrospective analysis of 605 patients treated with radiotherapy (RT) and long-term ADT (National Comprehensive Cancer Network criteria-defined intermediate-risk, minimum 10 months; high-risk and very-high-risk, minimum 20 months) was performed. The median ADT time was 31 months. Cox's proportional hazards models were used to compare biochemical disease-free survival (bDFS), clinical relapse-free survival (cRFS) and overall survival (OS) between the ≥70, <78 Gy group and 78 Gy group in a univariate analysis and to assess the effects of the dose escalation on bDFS in a multivariate analysis. RESULTS After a median follow-up of 70 months, 5-year bDFS was significantly better in the 78 Gy group than in the ≥70, <78 Gy group [96 vs 83%; hazard ratio 3.6 (95% confidence interval 2.2-6.1); p < 0.001]. 5-year cRFS and OS were similar between the two groups. The multivariate analysis showed that RT dose was still an independent prognostic factor of bDFS (p = 0.005). CONCLUSION The results of the present study suggest that dose escalations result in significant improvements in bDFS, even when used in combination with long-term ADT. A longer follow-up is needed to clarify the effects of dose escalations on cRFS and OS. Advances in knowledge: It remains unclear whether high-dose RT is necessary for improving the outcomes of patients receiving long-term ADT. The results suggest that dose escalations result in significant improvements in biochemical control.
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Affiliation(s)
- Natsuo Tomita
- 1 Department of Radiation Oncology , Aichi Cancer Center Hospital , Nagoya , Japan
| | - Norihito Soga
- 2 Department of Urology,Aichi Cancer Center Hospital , Aichi Cancer Center Hospital , Nagoya , Japan
| | - Yuji Ogura
- 2 Department of Urology,Aichi Cancer Center Hospital , Aichi Cancer Center Hospital , Nagoya , Japan
| | - Jun Furusawa
- 2 Department of Urology,Aichi Cancer Center Hospital , Aichi Cancer Center Hospital , Nagoya , Japan
| | - Hidetoshi Shimizu
- 1 Department of Radiation Oncology , Aichi Cancer Center Hospital , Nagoya , Japan
| | - Sou Adachi
- 1 Department of Radiation Oncology , Aichi Cancer Center Hospital , Nagoya , Japan
| | - Hiroshi Tanaka
- 1 Department of Radiation Oncology , Aichi Cancer Center Hospital , Nagoya , Japan
| | - Daiki Kato
- 1 Department of Radiation Oncology , Aichi Cancer Center Hospital , Nagoya , Japan
| | - Yutaro Koide
- 1 Department of Radiation Oncology , Aichi Cancer Center Hospital , Nagoya , Japan
| | - Chiyoko Makita
- 1 Department of Radiation Oncology , Aichi Cancer Center Hospital , Nagoya , Japan
| | - Hiroyuki Tachibana
- 1 Department of Radiation Oncology , Aichi Cancer Center Hospital , Nagoya , Japan
| | - Takeshi Kodaira
- 1 Department of Radiation Oncology , Aichi Cancer Center Hospital , Nagoya , Japan
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What pelvic radiation disease symptoms are experienced by patients receiving external beam radiotherapy and a high-dose-rate brachytherapy boost for prostate cancer? J Contemp Brachytherapy 2017; 9:393-402. [PMID: 29204159 PMCID: PMC5705828 DOI: 10.5114/jcb.2017.70731] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2017] [Accepted: 08/12/2017] [Indexed: 01/28/2023] Open
Abstract
Purpose Research describing proctitis or pelvic radiation disease symptoms of prostate cancer patients one year after external beam radiotherapy (EBRT) plus high-dose-rate (HDR) brachytherapy is limited. This study aimed to assess prostate cancer patients’ pelvic radiation disease symptoms from baseline to 12 months post-radiotherapy. Material and methods Men with prostate cancer referred for EBRT and HDR brachytherapy were recruited. Patients’ age, diagnosis, staging, PSA, past medical history, and treatment were recorded. Pelvic radiation disease symptoms were assessed via the Phase III EORTC proctitis module. Patients completed questionnaires before radiotherapy (baseline) and at one, three, six, and 12 months afterwards. To assess acute toxicity, symptoms one month after radiotherapy were compared with baseline. To assess post-treatment recovery, symptoms at three, six, and 12 months post radiotherapy were compared with one month. Symptom changes over time were assessed with linear mixed effect models. Results Two hundred and sixty-six patients were recruited. Mean scores were below 2 at all time-points. The proportion of patients experiencing symptoms were also calculated. Linear mixed effect models showed that time-point, age, and T-stage were associated with some pelvic radiation disease symptoms. Conclusions Patients receiving EBRT plus HDR brachytherapy to the prostate experienced mild pelvic radiation disease symptoms. Determining the proportion of patients with symptoms provided the most meaningful data.
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Hennequin C, Fumagalli I, Martin V, Quero L. [Combination of radiotherapy and androgen deprivation therapy for localized prostate cancer]. Cancer Radiother 2017; 21:462-468. [PMID: 28870416 DOI: 10.1016/j.canrad.2017.07.045] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2017] [Accepted: 07/02/2017] [Indexed: 10/18/2022]
Abstract
Combination of radiotherapy and androgen deprivation is now considered as the standard of care for patients with a localized prostate cancer but poor prognosis factors. Two groups of randomized trials have led to this recommendation: some have compared radiotherapy alone versus hormonal treatment and radiotherapy: these trials demonstrated, now with a long follow-up, an improvement in 10-year survival for the combined treatment. Three recent trials compared androgen deprivation alone or combined with radiotherapy; a benefit in survival was also demonstrated in favour of the combination. Some questions remained concerning the optimal duration of hormonal treatment, in view of its potential side effects. Patients in the intermediate prognostic groups could receive a short-term androgen deprivation, but those with a high Gleason score must be treated with a long-term hormonal treatment. Modalities of radiotherapy, regarding volumes and dose must also be précised in the next years.
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Affiliation(s)
- C Hennequin
- Service de cancérologie-radiothérapie, hôpital Saint-Louis, 1, avenue Claude-Vellefaux, 75475 Paris, France.
| | - I Fumagalli
- Service de cancérologie-radiothérapie, hôpital Saint-Louis, 1, avenue Claude-Vellefaux, 75475 Paris, France
| | - V Martin
- Service de cancérologie-radiothérapie, hôpital Saint-Louis, 1, avenue Claude-Vellefaux, 75475 Paris, France
| | - L Quero
- Service de cancérologie-radiothérapie, hôpital Saint-Louis, 1, avenue Claude-Vellefaux, 75475 Paris, France
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31
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Ong WL, Foroudi F, Evans S, Millar J. Large institutional variations in use of androgen deprivation therapy with definitive radiotherapy in a population-based cohort of men with intermediate- and high-risk prostate cancer. BJU Int 2017; 120 Suppl 3:35-42. [DOI: 10.1111/bju.13969] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Affiliation(s)
- Wee Loon Ong
- Department of Radiation Oncology; Olivia Newton-John Cancer and Wellness Centre, Austin Health; Heidelberg Vic. Australia
- Department of Epidemiology and Preventive Medicine; Monash University; Melbourne Vic. Australia
| | - Farshad Foroudi
- Department of Radiation Oncology; Olivia Newton-John Cancer and Wellness Centre, Austin Health; Heidelberg Vic. Australia
| | - Sue Evans
- Department of Epidemiology and Preventive Medicine; Monash University; Melbourne Vic. Australia
| | - Jeremy Millar
- Alfred Health Radiation Oncology Services; Prahran Vic. Australia
- Central Clinical School; Monash University; Melbourne Vic. Australia
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Comparison of neoadjuvant vs concurrent/adjuvant androgen deprivation in men with high-risk prostate cancer receiving definitive radiation therapy. TUMORI JOURNAL 2017; 103:387-393. [PMID: 28085179 DOI: 10.5301/tj.5000595] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 12/05/2016] [Indexed: 11/20/2022]
Abstract
PURPOSE It is unknown whether there is a benefit to starting androgen deprivation therapy (ADT) prior to rather than concurrently with definitive radiation therapy in men with high-risk prostate cancer. We studied the National Cancer Data Base to determine whether the timing of ADT impacts survival. METHODS Men diagnosed with high-risk prostate adenocarcinoma who received external beam radiation therapy (EBRT) to a dose of 70-81 Gy along with ADT from 2004-2011 were included. Those who started ADT 42-90 days before EBRT were identified as having received neoadjuvant hormonal therapy (N-HT) and those who received ADT from 14 days before their radiation until 84 days after the start of EBRT were categorized as receiving concurrent/adjuvant treatment (C-HT). We used the log-rank test to compare Kaplan-Meier survival curves and multivariable Cox regression to assess the impact of covariables on overall survival (OS). RESULTS Among 11,491 included patients, those receiving N-HT were 1 year older (p<0.001) and more likely to have Gleason 8-10 disease (p = 0.01) and cT3-4 disease (p = 0.002). Men receiving N-HT had a 5-year and median OS of 80.6% and 111.4 months, respectively, compared to 78.3% and 108.9 months, respectively, in those receiving C-HT (p = 0.03). This benefit remained significant on multivariable analysis (hazard ratio 0.86, 95% confidence interval 0.77-0.96, p = 0.008). Duration of ADT was not available to report. CONCLUSIONS External beam radiation therapy with N-HT was associated with improved overall survival compared to C-HT. This study is hypothesis-generating and further studies are needed to best qualify the sequencing of hormone therapy with the duration of treatment.
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Moulton CR, House MJ, Lye V, Tang CI, Krawiec M, Joseph DJ, Denham JW, Ebert MA. Spatial features of dose-surface maps from deformably-registered plans correlate with late gastrointestinal complications. Phys Med Biol 2017; 62:4118-4139. [PMID: 28445167 DOI: 10.1088/1361-6560/aa663d] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
This study investigates the associations between spatial distribution of dose to the rectal surface and observed gastrointestinal toxicities after deformably registering each phase of a combined external beam radiotherapy (EBRT)/high-dose-rate brachytherapy (HDRBT) prostate cancer treatment. The study contains data for 118 patients where the HDRBT CT was deformably-registered to the EBRT CT. The EBRT and registered HDRBT TG43 dose distributions in a reference 2 Gy/fraction were 3D-summed. Rectum dose-surface maps (DSMs) were obtained by virtually unfolding the rectum surface slice-by-slice. Associations with late peak gastrointestinal toxicities were investigated using voxel-wise DSM analysis as well as parameterised spatial patterns. The latter were obtained by thresholding DSMs from 1-80 Gy (increment = 1) and extracting inferior-superior extent, left-right extent, area, perimeter, compactness, circularity and ellipse fit parameters. Logistic regressions and Mann-Whitney U-tests were used to correlate features with toxicities. Rectal bleeding, stool frequency, diarrhoea and urgency/tenesmus were associated with greater lateral and/or longitudinal spread of the high doses near the anterior rectal surface. Rectal bleeding and stool frequency were also influenced by greater low-intermediate doses to the most inferior 20% of the rectum and greater low-intermediate-high doses to 40-80% of the rectum length respectively. Greater low-intermediate doses to the superior 20% and inferior 20% of the rectum length were associated with anorectal pain and urgency/tenesmus respectively. Diarrhoea, completeness of evacuation and proctitis were also related to greater low doses to the posterior side of the rectum. Spatial features for the intermediate-high dose regions such as area, perimeter, compactness, circularity, ellipse eccentricity and confinement to ellipse fits were strongly associated with toxicities other than anorectal pain. Consequently, toxicity is related to the shape of isodoses as well as dose coverage. The findings indicate spatial constraints on doses to certain sections of the rectum may be important for reducing toxicities and optimising dose.
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Affiliation(s)
- Calyn R Moulton
- School of Physics, University of Western Australia, Crawley, Western Australia, Australia
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Dixit A, Tang C, Bydder S, Kedda MA, Vosikova E, Bharat C, Gill S. First Australian experience of treating localised prostate cancer patients with CyberKnife stereotactic radiotherapy: early PSA response, acute toxicity and quality of life. J Med Radiat Sci 2017; 64:180-187. [PMID: 28271639 PMCID: PMC5587659 DOI: 10.1002/jmrs.205] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2016] [Revised: 10/26/2016] [Accepted: 11/24/2016] [Indexed: 11/30/2022] Open
Abstract
Introduction This study is to evaluate biochemical response, acute toxicity and health‐related quality‐of‐life (QOL) outcomes among prostate cancer patients following stereotactic body radiation therapy (SBRT) in the first Australian CyberKnife facility. Methods Forty‐five consecutive patients with clinically localised prostate cancer were treated with SBRT using CyberKnife technology and enrolled in this study. Protocol treatment consisted of 36.25 Gy in five fractions. PSA and acute toxicity was assessed at each follow‐up visit and QOL was assessed using the European Organisation for Research and Treatment of Cancer (EORTC) Global Health Status (GHS) C30 and PR25 questionnaires and the Karnofsky Performance Status (KPS). Distance of travel for treatment was recorded. Results The median prostate‐specific antigen (PSA) level declined from the initial value of 6.9 ng/mL to 1.5 ng/mL at 6 months and 0.6 ng/mL at 18 months post‐treatment. Results were similar in patients who did not receive hormone therapy. Acute grade 1 gastrointestinal (GI) and genitourinary (GU) toxicities were found in 11.1% and 24.4% of patients respectively. Acute grade 2 GI and GU toxicities were found in 2.2% and 11.1% of patients respectively. There were no grade 3 and grade 4 toxicities. Mean urinary symptom score was 14.8 at baseline, 17.2 at 6 weeks and 18.3 at 6 months (P > 0.05). Mean bowel symptom score was 2.7 at baseline, 4.2 at 6 weeks and 6.3 at 6 months (P > 0.05). The mean GHS score improved from 81.3 at baseline to 82.4 at 6 weeks, and was 75.6 at 6 months (P > 0.05, not significant). Compared to baseline KPS, there was a significant mean decrease from baseline of 96.7 to 93.3 at the 6‐week follow‐up (P = 0.0043), which then recovered to 94.3 at the 6‐month follow‐up (P = 0.1387). Conclusions Early results show promising PSA response. Acute toxicity seemed comparable to results from conventionally fractionated radiotherapy and to international prostate SBRT studies. EORTC PR25 and C30 scores did not reveal any significant change from baseline, and although there was a decrease in KPS, the absolute decrease was small.
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Affiliation(s)
- Ashutosh Dixit
- Department of Radiation Oncology, Sir Charles Gairdner Hospital, Nedlands, Western Australia, Australia
| | - Colin Tang
- Department of Radiation Oncology, Sir Charles Gairdner Hospital, Nedlands, Western Australia, Australia
| | - Sean Bydder
- Department of Radiation Oncology, Sir Charles Gairdner Hospital, Nedlands, Western Australia, Australia.,Department of Surgery, University of Western Australia, Crawley, Western Australia, Australia
| | - Mary-Anne Kedda
- Department of Radiation Oncology, Sir Charles Gairdner Hospital, Nedlands, Western Australia, Australia.,School of Population Health, University of Western Australia, Crawley, Western Australia, Australia
| | - Eva Vosikova
- Department of Radiation Oncology, Sir Charles Gairdner Hospital, Nedlands, Western Australia, Australia
| | - Chrianna Bharat
- Centre for Applied Statistics, University of Western Australia, Crawley, Western Australia, Australia.,Department of Research, Sir Charles Gairdner Hospital, Nedlands, Western Australia, Australia
| | - Suki Gill
- Department of Radiation Oncology, Sir Charles Gairdner Hospital, Nedlands, Western Australia, Australia
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Moulton CR, House MJ, Lye V, Tang CI, Krawiec M, Joseph DJ, Denham JW, Ebert MA. Accumulation of rectum dose-volume metrics for prostate external beam radiotherapy combined with brachytherapy: Evaluating deformably registered dose distribution addition using parameter-based addition. J Med Imaging Radiat Oncol 2017; 61:534-542. [PMID: 28185419 DOI: 10.1111/1754-9485.12593] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2016] [Accepted: 12/29/2016] [Indexed: 11/28/2022]
Abstract
INTRODUCTION To investigate the accuracy of deriving dose-volume histogram (DVH) parameters from deformably registered data by comparing values with the simple addition of DVHs from each phase of a combined external beam radiotherapy (EBRT)/high-dose-rate (HDR-BT) brachytherapy prostate treatment. METHODS Eighty-two patients received EBRT in 23 fractions of 2 Gy and HDR-BT TG43 in three fractions of 6.5 Gy. The HDR-BT CT was deformably registered to the EBRT CT. The rectum D0.1cc , D1cc , D2cc and D10cc were calculated in two ways. (i) Parameter-adding: the EBRT DVH parameters (or the EBRT prescription dose) were added to the unregistered HDR-BT DVH parameters. (ii) Distribution-adding: the parameters were extracted after the EBRT doses were 3D-summed with the registered HDR-BT doses. Resulting differences between the parameters were investigated. RESULTS The D0.1cc , D1cc and D2cc from parameter-adding were 21.3% (P < 0.001), 6.3% (P < 0.001) and 3.5% (P < 0.001) smaller than those from distribution-adding. The D10cc was 2.2% (P = 0.015) larger for distribution-adding. CONCLUSION Distribution-adding was confounded by unsystematic inter/intra-observer rectum-contouring errors and registration accuracy near the anterior rectal wall. Consequently, clinical use of distribution-adding to assess rectal doses requires careful contour and registration evaluation.
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Affiliation(s)
- Calyn R Moulton
- School of Physics, University of Western Australia, Crawley, Western Australia, Australia
| | - Michael J House
- School of Physics, University of Western Australia, Crawley, Western Australia, Australia
| | - Victoria Lye
- Radiation Oncology, Sir Charles Gairdner Hospital, Nedlands, Western Australia, Australia
| | - Colin I Tang
- Radiation Oncology, Sir Charles Gairdner Hospital, Nedlands, Western Australia, Australia
| | - Michele Krawiec
- Radiation Oncology, Sir Charles Gairdner Hospital, Nedlands, Western Australia, Australia
| | - David J Joseph
- Radiation Oncology, Sir Charles Gairdner Hospital, Nedlands, Western Australia, Australia.,School of Surgery, University of Western Australia, Crawley, Western Australia, Australia
| | - James W Denham
- School of Medicine and Population Health, University of Newcastle, Callaghan, New South Wales, Australia
| | - Martin A Ebert
- School of Physics, University of Western Australia, Crawley, Western Australia, Australia.,Radiation Oncology, Sir Charles Gairdner Hospital, Nedlands, Western Australia, Australia
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Yahya N, Ebert MA, Bulsara M, House MJ, Kennedy A, Joseph DJ, Denham JW. Statistical-learning strategies generate only modestly performing predictive models for urinary symptoms following external beam radiotherapy of the prostate: A comparison of conventional and machine-learning methods. Med Phys 2017; 43:2040. [PMID: 27147316 DOI: 10.1118/1.4944738] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023] Open
Abstract
PURPOSE Given the paucity of available data concerning radiotherapy-induced urinary toxicity, it is important to ensure derivation of the most robust models with superior predictive performance. This work explores multiple statistical-learning strategies for prediction of urinary symptoms following external beam radiotherapy of the prostate. METHODS The performance of logistic regression, elastic-net, support-vector machine, random forest, neural network, and multivariate adaptive regression splines (MARS) to predict urinary symptoms was analyzed using data from 754 participants accrued by TROG03.04-RADAR. Predictive features included dose-surface data, comorbidities, and medication-intake. Four symptoms were analyzed: dysuria, haematuria, incontinence, and frequency, each with three definitions (grade ≥ 1, grade ≥ 2 and longitudinal) with event rate between 2.3% and 76.1%. Repeated cross-validations producing matched models were implemented. A synthetic minority oversampling technique was utilized in endpoints with rare events. Parameter optimization was performed on the training data. Area under the receiver operating characteristic curve (AUROC) was used to compare performance using sample size to detect differences of ≥0.05 at the 95% confidence level. RESULTS Logistic regression, elastic-net, random forest, MARS, and support-vector machine were the highest-performing statistical-learning strategies in 3, 3, 3, 2, and 1 endpoints, respectively. Logistic regression, MARS, elastic-net, random forest, neural network, and support-vector machine were the best, or were not significantly worse than the best, in 7, 7, 5, 5, 3, and 1 endpoints. The best-performing statistical model was for dysuria grade ≥ 1 with AUROC ± standard deviation of 0.649 ± 0.074 using MARS. For longitudinal frequency and dysuria grade ≥ 1, all strategies produced AUROC>0.6 while all haematuria endpoints and longitudinal incontinence models produced AUROC<0.6. CONCLUSIONS Logistic regression and MARS were most likely to be the best-performing strategy for the prediction of urinary symptoms with elastic-net and random forest producing competitive results. The predictive power of the models was modest and endpoint-dependent. New features, including spatial dose maps, may be necessary to achieve better models.
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Affiliation(s)
- Noorazrul Yahya
- School of Physics, University of Western Australia, Western Australia 6009, Australia and School of Health Sciences, National University of Malaysia, Bangi 43600, Malaysia
| | - Martin A Ebert
- School of Physics, University of Western Australia, Western Australia 6009, Australia and Department of Radiation Oncology, Sir Charles Gairdner Hospital, Western Australia 6008, Australia
| | - Max Bulsara
- Institute for Health Research, University of Notre Dame, Fremantle, Western Australia 6959, Australia
| | - Michael J House
- School of Physics, University of Western Australia, Western Australia 6009, Australia
| | - Angel Kennedy
- Department of Radiation Oncology, Sir Charles Gairdner Hospital, Western Australia 6008, Australia
| | - David J Joseph
- Department of Radiation Oncology, Sir Charles Gairdner Hospital, Western Australia 6008, Australia and School of Surgery, University of Western Australia, Western Australia 6009, Australia
| | - James W Denham
- School of Medicine and Public Health, University of Newcastle, New South Wales 2308, Australia
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Keyes M, Merrick G, Frank SJ, Grimm P, Zelefsky MJ. American Brachytherapy Society Task Group Report: Use of androgen deprivation therapy with prostate brachytherapy-A systematic literature review. Brachytherapy 2017; 16:245-265. [PMID: 28110898 DOI: 10.1016/j.brachy.2016.11.017] [Citation(s) in RCA: 42] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2016] [Revised: 11/16/2016] [Accepted: 11/29/2016] [Indexed: 12/11/2022]
Abstract
PURPOSE Prostate brachytherapy (PB) has well-documented excellent long-term outcomes in all risk groups. There are significant uncertainties regarding the role of androgen deprivation therapy (ADT) with brachytherapy. The purpose of this report was to review systemically the published literature and summarize present knowledge regarding the impact of ADT on biochemical progression-free survival (bPFS), cause-specific survival (CSS), and overall survival (OS). METHODS AND MATERIALS A literature search was conducted in Medline and Embase covering the years 1996-2016. Selected were articles with >100 patients, minimum followup 3 years, defined risk stratification, and directly examining the role and impact of ADT on bPFS, CSS, and OS. The studies were grouped to reflect disease risk stratification. We also reviewed the impact of ADT on OS, cardiovascular morbidity, mortality, and on-going brachytherapy randomized controlled trials (RCTs). RESULTS Fifty-two selected studies (43,303 patients) were included in this review; 7 high-dose rate and 45 low-dose rate; 25 studies were multi-institutional and 27 single institution (retrospective review or prospective data collection) and 2 were RCTs. The studies were heterogeneous in patient population, risk categories, risk factors, followup time, and treatment administered, including ADT administration and duration (median, 3-12 months);71% of the studies reported a lack of benefit, whereas 28% showed improvement in bPFS with addition of ADT to PB. The lack of benefit was seen in low-risk and favorable intermediate-risk (IR) disease and most high-dose rate studies. A bPFS benefit of up to 15% was seen with ADT use in patients with suboptimal dosimetry, those with multiple adverse risk factors (unfavorable IR [uIR]), and most high-risk (HR) studies. Four studies reported very small benefit to CSS (2%). None of the studies showed OS advantage; however, three studies reported an absolute 5-20% OS detriment with ADT. Literature suggests that OS detriment is more likely in older patients or those with pre-existing cardiovascular disease. Four RCTs with an adequate number of patients and well-defined risk stratification are in progress. One RCT will answer the question regarding the role of ADT with PB in favorable IR patients and the other three RCTs will focus on optimal duration of ADT in the uIR and favorable HR population. CONCLUSIONS Patients treated with brachytherapy have excellent long-term disease outcomes. Existing evidence shows no benefit of adding ADT to PB in low-risk and favorable IR patients. UIR and HR patients and those with suboptimal dosimetry may have up to 15% improvement in bPFS with addition of 3-12 months of ADT, with uncertain impact on CSS and a potential detriment on OS. To minimize morbidity, one should exercise caution in prescribing ADT together with PB, in particular to older men and those with existing cardiovascular disease. Due to the retrospective nature of this evidence, significant selection, and treatment bias, no definitive conclusions are possible. RCT is urgently needed to define the potential role and optimal duration of ADT in uIR and favorable HR disease.
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Affiliation(s)
- M Keyes
- Department of Radiation Oncology, British Columbia Cancer Agency, University of British Columbia, Vancouver, BC, Canada.
| | - G Merrick
- Department of Radiation Oncology, Schiffler Cancer Center, Wheeling Jesuit University, Wheeling, WV
| | - S J Frank
- Department of Radiation Oncology, University of Texas MD Anderson Cancer Center, Houston, TX
| | - P Grimm
- Prostate Cancer Center of Seattle, Seattle, WA
| | - M J Zelefsky
- Department of Radiation Oncology, Memorial Sloan Kettering Cancer Center, New York, NY
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Classifying high-risk versus very high-risk prostate cancer: is it relevant to outcomes of conformal radiotherapy and androgen deprivation? Radiat Oncol 2017; 12:5. [PMID: 28061904 PMCID: PMC5216523 DOI: 10.1186/s13014-016-0743-2] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2016] [Accepted: 12/12/2016] [Indexed: 11/10/2022] Open
Abstract
OBJECTIVE To evaluate outcomes in prostate cancer patients classified as high-risk (HR) or very high-risk (VHR) who were treated with conformal radiation therapy (CRT) and androgen deprivation therapy (ADT). METHODS Between 11/2001 and 3/2012, 203 patients with HR disease received CRT to the prostate (78-82 Gy) and pelvic lymph nodes (46-50 Gy) with ADT (6 m-2 years). Median follow-up was 50 months (12 m-142 m). Biochemical failure was defined according to Phoenix definition. Imaging studies were used to identify local, regional or metastatic failure. Four different VHR/HR groupings were formed using the 2014 and revised 2015 NCCN guidelines. Differences were examined using Kaplan Meier (KM) estimates with log rank test and uni- and multivariate Cox regression analysis (MVA). RESULTS Failure occurred in 30/203 patients (15%). Median time to failure was 30 m (4 m-76 m). KM estimate of 4 year biochemical disease free survival (b-DFS) for the entire cohort was 87% (95%CI: 82-92%). Four year KM survival estimates for b-DFS, PCSS and OS were comparable for each NCCN subgroup. On univariate analysis, the NCCN subgroups were not predictive of b-DFS at 4 years, however, DMFS was worse for both VHR subgroups (p = .03and .01) respectively. Cox univariate analysis was also significant for: PSA ≥40 ng/ml p = 0.001; clinical stages T2c p = .004, T3b p = .02 and > 4 cores with Gleason score 8-10 p < .03. On MVA, only PSA ≥ 40 ng/ml was predictive for b-DFS or MFS at 4 years (HR: 3.75 and 3.25, p < 0.005). CONCLUSION Patients with HR and VHR disease treated with CRT and ADT had good outcomes. Stratification into HR and VHR sub-groups provided no predictive value. Only PSA ≥40 ng/ml predicted poor outcomes on MVA. Distant failure was dominant and local recurrence rare, suggesting that improved systemic treatment rather than intensification of local therapy is needed. Patients with high-risk prostate cancer are most often treated with conformal dose escalated radiation therapy with androgen deprivation. Stratification into high versus very high-risk subgroups using 2014 or revised 2015 National Comprehensive Cancer Network (NCCN) criteria did not impact treatment outcomes. Only Prostate Serum Antigen (PSA) ≥40 ng/ml was predictive of poor prognosis. Distant failure was dominant and local recurrence uncommon which challenges the notion that intensification of local therapy will further improve outcomes in patients with high-risk disease.
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Moulton CR, House MJ, Lye V, Tang CI, Krawiec M, Joseph DJ, Denham JW, Ebert MA. Prostate external beam radiotherapy combined with high-dose-rate brachytherapy: dose-volume parameters from deformably-registered plans correlate with late gastrointestinal complications. Radiat Oncol 2016; 11:144. [PMID: 27799048 PMCID: PMC5087115 DOI: 10.1186/s13014-016-0719-2] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2016] [Accepted: 10/17/2016] [Indexed: 01/05/2023] Open
Abstract
BACKGROUND Derivation of dose-volume correlated with toxicity for multi-modal treatments can be difficult due to the perceived need for voxel-by-voxel dose accumulation. With data available for a single-institution cohort with long follow-up, an investigation was undertaken into rectal dose-volume effects for gastrointestinal toxicities after deformably-registering each phase of a combined external beam radiotherapy (EBRT)/high-dose-rate (HDR) brachytherapy prostate treatment. METHODS One hundred and eighteen patients received EBRT in 23 fractions of 2 Gy and HDR (TG43 algorithm) in 3 fractions of 6.5 Gy. Results for the Late Effects of Normal Tissues - Subjective, Objective, Management and Analytic toxicity assessments were available with a median follow-up of 72 months. The HDR CT was deformably-registered to the EBRT CT. Doses were corrected for dose fractionation. Rectum dose-volume histogram (DVH) parameters were calculated in two ways. (1) Distribution-adding: parameters were calculated after the EBRT dose distribution was 3D-summed with the registered HDR dose distribution. (2) Parameter-adding: the EBRT DVH parameters were added to HDR DVH parameters. Logistic regressions and Mann-Whitney U-tests were used to correlate parameters with late peak toxicity (dichotomised at grade 1 or 2). RESULTS The 48-80, 40-63 and 49-55 Gy dose regions from distribution-adding were significantly correlated with rectal bleeding, urgency/tenesmus and stool frequency respectively. Additionally, urgency/tenesmus and anorectal pain were associated with the 25-26 Gy and 44-48 Gy dose regions from distribution-adding respectively. Parameter-adding also indicated the low-mid dose region was significantly correlated with stool frequency and proctitis. CONCLUSIONS This study confirms significant dose-histogram effects for gastrointestinal toxicities after including deformable registration to combine phases of EBRT/HDR prostate cancer treatment. The findings from distribution-adding were in most cases consistent with those from parameter-adding. The mid-high dose range and near maximum doses were important for rectal bleeding. The distribution-adding mid-high dose range was also important for stool frequency and urgency/tenesmus. We encourage additional studies in a variety of institutions using a variety of dose accumulation methods with appropriate inter-fraction motion management. TRIAL REGISTRATION NCT NCT00193856 . Retrospectively registered 12 September 2005.
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Affiliation(s)
- Calyn R. Moulton
- School of Physics (M013), University of Western Australia, 35 Stirling Highway, Crawley, WA 6009 Australia
| | - Michael J. House
- School of Physics (M013), University of Western Australia, 35 Stirling Highway, Crawley, WA 6009 Australia
| | - Victoria Lye
- Radiation Oncology, Sir Charles Gairdner Hospital, Hospital Avenue, Nedlands, WA 6009 Australia
| | - Colin I. Tang
- Radiation Oncology, Sir Charles Gairdner Hospital, Hospital Avenue, Nedlands, WA 6009 Australia
| | - Michele Krawiec
- Radiation Oncology, Sir Charles Gairdner Hospital, Hospital Avenue, Nedlands, WA 6009 Australia
| | - David J. Joseph
- Radiation Oncology, Sir Charles Gairdner Hospital, Hospital Avenue, Nedlands, WA 6009 Australia
- School of Surgery, University of Western Australia, 35 Stirling Highway, Crawley, WA 6009 Australia
| | - James W. Denham
- School of Medicine and Population Health, University of Newcastle, University Drive, Callaghan, NSW 2308 Australia
| | - Martin A. Ebert
- School of Physics (M013), University of Western Australia, 35 Stirling Highway, Crawley, WA 6009 Australia
- Radiation Oncology, Sir Charles Gairdner Hospital, Hospital Avenue, Nedlands, WA 6009 Australia
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Yahya N, Ebert MA, House MJ, Kennedy A, Matthews J, Joseph DJ, Denham JW. Modeling Urinary Dysfunction After External Beam Radiation Therapy of the Prostate Using Bladder Dose-Surface Maps: Evidence of Spatially Variable Response of the Bladder Surface. Int J Radiat Oncol Biol Phys 2016; 97:420-426. [PMID: 28068247 DOI: 10.1016/j.ijrobp.2016.10.024] [Citation(s) in RCA: 40] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2016] [Revised: 09/27/2016] [Accepted: 10/14/2016] [Indexed: 01/05/2023]
Abstract
PURPOSE We assessed the association of the spatial distribution of dose to the bladder surface, described using dose-surface maps, with the risk of urinary dysfunction. METHODS AND MATERIALS The bladder dose-surface maps of 754 participants from the TROG 03.04-RADAR trial were generated from the volumetric data by virtually cutting the bladder at the sagittal slice, intersecting the bladder center-of-mass through to the bladder posterior and projecting the dose information on a 2-dimensional plane. Pixelwise dose comparisons were performed between patients with and without symptoms (dysuria, hematuria, incontinence, and an International Prostate Symptom Score increase of ≥10 [ΔIPSS10]). The results with and without permutation-based multiple-comparison adjustments are reported. The pixelwise multivariate analysis findings (peak-event model for dysuria, hematuria, and ΔIPSS10; event-count model for incontinence), with adjustments for clinical factors, are also reported. RESULTS The associations of the spatially specific dose measures to urinary dysfunction were dependent on the presence of specific symptoms. The doses received by the anteroinferior and, to lesser extent, posterosuperior surface of the bladder had the strongest relationship with the incidence of dysuria, hematuria, and ΔIPSS10, both with and without adjustment for clinical factors. For the doses to the posteroinferior region corresponding to the area of the trigone, the only symptom with significance was incontinence. CONCLUSIONS A spatially variable response of the bladder surface to the dose was found for symptoms of urinary dysfunction. Limiting the dose extending anteriorly might help reduce the risk of urinary dysfunction.
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Affiliation(s)
- Noorazrul Yahya
- School of Health Sciences, National University of Malaysia, Kuala Lumpur, Malaysia; School of Physics, University of Western Australia, Perth, Western Australia, Australia.
| | - Martin A Ebert
- School of Physics, University of Western Australia, Perth, Western Australia, Australia; Department of Radiation Oncology, Sir Charles Gairdner Hospital, Nedlands, Western Australia, Australia
| | - Michael J House
- School of Physics, University of Western Australia, Perth, Western Australia, Australia
| | - Angel Kennedy
- Department of Radiation Oncology, Sir Charles Gairdner Hospital, Nedlands, Western Australia, Australia
| | - John Matthews
- Department of Radiation Oncology, Auckland City Hospital, Auckland, New Zealand
| | - David J Joseph
- Department of Radiation Oncology, Sir Charles Gairdner Hospital, Nedlands, Western Australia, Australia; School of Surgery, University of Western Australia, Perth, Western Australia, Australia
| | - James W Denham
- School of Medicine and Public Health, University of Newcastle, Newcastle, New South Wales, Australia
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Sridharan S, Steigler A, Spry NA, Joseph D, Lamb DS, Matthews JH, Atkinson C, Tai KH, Duchesne G, Christie D, Attia J, Holliday EG, Denham JW. Oligometastatic bone disease in prostate cancer patients treated on the TROG 03.04 RADAR trial. Radiother Oncol 2016; 121:98-102. [PMID: 27528117 DOI: 10.1016/j.radonc.2016.07.021] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2016] [Revised: 07/20/2016] [Accepted: 07/24/2016] [Indexed: 12/29/2022]
Abstract
BACKGROUND It remains unclear whether eradication of oligometastases by stereotactic body radiation therapy or other means will result in cure or prolongation of survival in some cases, or merely provide palliation. We address this issue with prospectively collected progression and treatment data from the TROG 03.04 RADAR randomised controlled trial for men with locally advanced prostate cancer (PC). METHODS Three Fine and Gray competing risk survival models with time-dependent covariates were used to determine whether metastatic progression status at first diagnosis of bony metastases, i.e. number of bony sites involved and presence of prior or simultaneous other sites of progression, impacts on prostate cancer-specific mortality (PCSM) when adjusted for baseline prognostic factors and allocated primary treatment. RESULTS Between 2003 and 2014, 176 of the 1071 subjects developed bone metastases, 152 developed other sites of progression and 91 died of PC. All subjects received secondary treatment using androgen suppression but none received extirpative treatments. The three models found evidence: 1 - of a clear prognostic gradient according to number of bony metastatic sites; 2 - that other sites of progression contributed to PCSM to a lesser extent than bone progression; and 3 - that further bony metastatic progression in men with up to 3 bony metastases had a major impact on PCSM. CONCLUSION Randomised trials are essential to determine the value of extirpative treatment for oligometastatic bony metastases due to PC.
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Affiliation(s)
| | - Allison Steigler
- School of Medicine and Public Health, University of Newcastle, Australia
| | | | | | | | | | - Chris Atkinson
- St Georges Cancer Care Centre, Christchurch, New Zealand
| | - Keen-Hun Tai
- Peter MacCallum Cancer Centre, Melbourne, Australia
| | | | | | - John Attia
- School of Medicine and Public Health, University of Newcastle, Australia; Hunter Medical Research Institute, Newcastle, Australia
| | - Elizabeth G Holliday
- School of Medicine and Public Health, University of Newcastle, Australia; Hunter Medical Research Institute, Newcastle, Australia
| | - James W Denham
- School of Medicine and Public Health, University of Newcastle, Australia.
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Yahya N, Ebert MA, Bulsara M, Kennedy A, Joseph DJ, Denham JW. Independent external validation of predictive models for urinary dysfunction following external beam radiotherapy of the prostate: Issues in model development and reporting. Radiother Oncol 2016; 120:339-45. [DOI: 10.1016/j.radonc.2016.05.010] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2016] [Revised: 05/11/2016] [Accepted: 05/15/2016] [Indexed: 12/20/2022]
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Delahunt B, Egevad L, Srigley JR, Steigler A, Murray JD, Atkinson C, Matthews J, Duchesne G, Spry NA, Christie D, Joseph D, Attia J, Denham JW. Validation of International Society of Urological Pathology (ISUP) grading for prostatic adenocarcinoma in thin core biopsies using TROG 03.04 'RADAR' trial clinical data. Pathology 2016; 47:520-5. [PMID: 26325671 DOI: 10.1097/pat.0000000000000318] [Citation(s) in RCA: 42] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
In 2014 a consensus conference convened by the International Society of Urological Pathology (ISUP) adopted amendments to the criteria for Gleason grading and scoring (GS) for prostatic adenocarcinoma. The meeting defined a modified grading system based on 5 grading categories (grade 1, GS 3+3; grade 2, GS 3+4; grade 3, GS 4+3; grade 4, GS 8; grade 5, GS 9-10). In this study we have evaluated the prognostic significance of ISUP grading in 496 patients enrolled in the TROG 03.04 RADAR Trial. There were 19 grade 1, 118 grade 2, 193 grade 3, 88 grade 4 and 79 grade 5 tumours in the series, with follow-up for a minimum of 6.5 years. On follow-up 76 patients experienced distant progression of disease, 171 prostate specific antigen (PSA) progression and 39 prostate cancer deaths. In contrast to the 2005 modified Gleason system (MGS), the hazards of the distant and PSA progression endpoints, relative to grade 2, were significantly greater for grades 3, 4 and 5 of the 2014 ISUP grading scheme. Comparison of predictive ability utilising Harrell's concordance index, showed 2014 ISUP grading to significantly out-perform 2005 MGS grading for each of the three clinical endpoints.
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Affiliation(s)
- B Delahunt
- 1Department of Pathology and Molecular Medicine, Wellington School of Medicine and Health Sciences, Wellington, New Zealand 2Department of Oncology - Pathology, Karolinska Institute, Stockholm, Sweden 3Department of Pathology and Molecular Medicine, McMaster University, Toronto, Canada 4School of Medicine and Public Health, University of Newcastle, Newcastle, NSW, Australia 5St Georges Cancer Care Centre, Christchurch 6Auckland Hospital, Auckland, New Zealand 7Peter MacCallum Cancer Centre, Melbourne, Vic 8Sir Charles Gairdner Hospital, Perth, WA 9Genesis Care, Tugun, Qld 10Hunter Medical Research Institute, Newcastle, NSW, Australia
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Lilleby W, Stensvold A, Dahl AA. Fatigue and other adverse effects in men treated by pelvic radiation and long-term androgen deprivation for locally advanced prostate cancer. Acta Oncol 2016; 55:807-13. [PMID: 26959297 DOI: 10.3109/0284186x.2015.1127417] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
Background We compared the development of adverse effects and psychosocial measures from baseline to 36-month follow-up in patients with prostate cancer (T1-3 M0) referred to our department for definitive radiotherapy encompassing the prostate and pelvic lymph nodes (RAD + IMRT) or radiotherapy to the prostatic gland only (RAD), applied with standard adjuvant androgen deprivation (AD) in all patients. Few studies have explored the impact of fatigue on patients' reported quality of life (QoL) after combined therapy for prostate cancer. Material and methods The 206 consecutive eligible men (RAD + IMRT = 64 and RAD = 142) completed the UCLA-PCI questionnaire for adverse effects at baseline, 12, 24, and 36 months. QoL, anxiety and depression, and fatigue were rated at the same time points. Between-group and longitudinal within-group changes at different time points were reported. At 36 months variables associated with fatigue were analyzed with regression analyses. Results Our main novel finding is the long-term high level of fatigue and high prevalence of chronic fatigue, affecting patients receiving radiotherapy combined with long-term AD. Except for urinary bother in the RAD + IMRT group all functions and the other bothers mean scores were significantly worse at 36 months compared to baseline. In multivariable analyses only physical QoL remained significantly associated with fatigue at 36-months follow-up. Conclusions Fatigue and impaired QoL in patients considered to curative irradiation with long-term AD should be addressed when counseling men to combined treatment.
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Affiliation(s)
- Wolfgang Lilleby
- Department of Oncology, Oslo University Hospital, the Norwegian Radium Hospital, Oslo, Norway
| | | | - Alv A. Dahl
- Department of Oncology, Oslo University Hospital, the Norwegian Radium Hospital, Oslo, Norway
- Faculty of Medicine, University of Oslo, Oslo, Norway
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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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Pollack A, Abramowitz MC. Weighing the Addition of Androgen Suppression Therapy to Radiotherapy Dose Escalation for Intermediate-Risk Prostate Cancer. J Clin Oncol 2016; 34:1715-7. [PMID: 26976421 DOI: 10.1200/jco.2015.66.2320] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Affiliation(s)
- Alan Pollack
- University of Miami Miller School of Medicine, Miami, FL
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Moulton CR, House MJ, Lye V, Tang CI, Krawiec M, Joseph DJ, Denham JW, Ebert MA. Registering prostate external beam radiotherapy with a boost from high-dose-rate brachytherapy: a comparative evaluation of deformable registration algorithms. Radiat Oncol 2015; 10:254. [PMID: 26666538 PMCID: PMC4678702 DOI: 10.1186/s13014-015-0563-9] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2015] [Accepted: 12/07/2015] [Indexed: 11/30/2022] Open
Abstract
BACKGROUND Registering CTs for patients receiving external beam radiotherapy (EBRT) with a boost dose from high-dose-rate brachytherapy (HDR) can be challenging due to considerable image discrepancies (e.g. rectal fillings, HDR needles, HDR artefacts and HDR rectal packing materials). This study is the first to comparatively evaluate image processing and registration methods used to register the rectums in EBRT and HDR CTs of prostate cancer patients. The focus is on the rectum due to planned future analysis of rectal dose-volume response. METHODS For 64 patients, the EBRT CT was retrospectively registered to the HDR CT with rigid registration and non-rigid registration methods in VelocityAI. Image processing was undertaken on the HDR CT and the rigidly-registered EBRT CT to reduce the impact of discriminating features on alternative non-rigid registration methods applied in the software suite for Deformable Image Registration and Adaptive Radiotherapy Research (DIRART) using the Horn-Schunck optical flow and Demons algorithms. The propagated EBRT-rectum structures were compared with the HDR structure using the Dice similarity coefficient (DSC), Hausdorff distance (HD) and average surface distance (ASD). The image similarity was compared using mutual information (MI) and root mean squared error (MSE). The displacement vector field was assessed via the Jacobian determinant (JAC). The post-registration alignments of rectums for 21 patients were visually assessed. RESULTS The greatest improvement in the median DSC relative to the rigid registration result was 35 % for the Horn-Schunck algorithm with image processing. This algorithm also provided the best ASD results. The VelocityAI algorithms provided superior HD, MI, MSE and JAC results. The visual assessment indicated that the rigid plus deformable multi-pass method within VelocityAI resulted in the best rectum alignment. CONCLUSIONS The DSC, ASD and HD improved significantly relative to the rigid registration result if image processing was applied prior to DIRART non-rigid registrations, whereas VelocityAI without image processing provided significant improvements. Reliance on a single rectum structure-correspondence metric would have been misleading as the metrics were inconsistent with one another and visual assessments. It was important to calculate metrics for a restricted region covering the organ of interest. Overall, VelocityAI generated the best registrations for the rectum according to the visual assessment, HD, MI, MSE and JAC results.
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Affiliation(s)
- Calyn R Moulton
- School of Physics (M013), University of Western Australia, 35 Stirling Highway, Crawley, Western Australia, 6009, Australia.
| | - Michael J House
- School of Physics (M013), University of Western Australia, 35 Stirling Highway, Crawley, Western Australia, 6009, Australia
| | - Victoria Lye
- Radiation Oncology, Sir Charles Gairdner Hospital, Hospital Avenue, Nedlands, Western Australia, 6009, Australia
| | - Colin I Tang
- Radiation Oncology, Sir Charles Gairdner Hospital, Hospital Avenue, Nedlands, Western Australia, 6009, Australia
| | - Michele Krawiec
- Radiation Oncology, Sir Charles Gairdner Hospital, Hospital Avenue, Nedlands, Western Australia, 6009, Australia
| | - David J Joseph
- Radiation Oncology, Sir Charles Gairdner Hospital, Hospital Avenue, Nedlands, Western Australia, 6009, Australia
- School of Surgery, University of Western Australia, 35 Stirling Highway, Crawley, Western Australia, 6009, Australia
| | - James W Denham
- School of Medicine and Population Health, University of Newcastle, University Drive, Callaghan, New South Wales, 2308, Australia
| | - Martin A Ebert
- School of Physics (M013), University of Western Australia, 35 Stirling Highway, Crawley, Western Australia, 6009, Australia
- Radiation Oncology, Sir Charles Gairdner Hospital, Hospital Avenue, Nedlands, Western Australia, 6009, Australia
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Yahya N, Ebert MA, Bulsara M, House MJ, Kennedy A, Joseph DJ, Denham JW. Urinary symptoms following external beam radiotherapy of the prostate: Dose-symptom correlates with multiple-event and event-count models. Radiother Oncol 2015; 117:277-82. [PMID: 26476560 DOI: 10.1016/j.radonc.2015.10.003] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2015] [Revised: 09/30/2015] [Accepted: 10/03/2015] [Indexed: 10/22/2022]
Abstract
BACKGROUND AND PURPOSE This study aimed to compare urinary dose-symptom correlates after external beam radiotherapy of the prostate using commonly utilised peak-symptom models to multiple-event and event-count models which account for repeated events. MATERIALS AND METHODS Urinary symptoms (dysuria, haematuria, incontinence and frequency) from 754 participants from TROG 03.04-RADAR trial were analysed. Relative (R1-R75 Gy) and absolute (A60-A75Gy) bladder dose-surface area receiving more than a threshold dose and equivalent uniform dose using exponent a (range: a ∈[1 … 100]) were derived. The dose-symptom correlates were analysed using; peak-symptom (logistic), multiple-event (generalised estimating equation) and event-count (negative binomial regression) models. RESULTS Stronger dose-symptom correlates were found for incontinence and frequency using multiple-event and/or event-count models. For dysuria and haematuria, similar or better relationships were found using peak-symptom models. Dysuria, haematuria and high grade (⩾ 2) incontinence were associated to high dose (R61-R71 Gy). Frequency and low grade (⩾ 1) incontinence were associated to low and intermediate dose-surface parameters (R13-R41Gy). Frequency showed a parallel behaviour (a=1) while dysuria, haematuria and incontinence showed a more serial behaviour (a=4 to a ⩾ 100). Relative dose-surface showed stronger dose-symptom associations. CONCLUSIONS For certain endpoints, the multiple-event and event-count models provide stronger correlates over peak-symptom models. Accounting for multiple events may be advantageous for a more complete understanding of urinary dose-symptom relationships.
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Affiliation(s)
- Noorazrul Yahya
- School of Physics, University of Western Australia, Australia; School of Health Sciences, National University of Malaysia, Malaysia.
| | - Martin A Ebert
- School of Physics, University of Western Australia, Australia; Department of Radiation Oncology, Sir Charles Gairdner Hospital, Australia
| | - Max Bulsara
- Institute for Health Research, University of Notre Dame, Fremantle, Australia
| | - Michael J House
- School of Physics, University of Western Australia, Australia
| | - Angel Kennedy
- Department of Radiation Oncology, Sir Charles Gairdner Hospital, Australia
| | - David J Joseph
- Department of Radiation Oncology, Sir Charles Gairdner Hospital, Australia; School of Surgery, University of Western Australia, Australia
| | - James W Denham
- School of Medicine and Public Health, University of Newcastle, Australia
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