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Slama Y, Baumont G, Arcambal A, Begue M, Maillot O, Sayah R, Castanet R, Caboche R, Liberati P, Slaoui H, Bouaziz M, Borson O, Nguyen NP, Dutheil F. Retrospective study on the toxicity induced by stereotactic body radiotherapy: overview of the reunion experience on prostate cancer in elderly patients. Front Oncol 2024; 14:1302001. [PMID: 38361775 PMCID: PMC10867626 DOI: 10.3389/fonc.2024.1302001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2023] [Accepted: 01/17/2024] [Indexed: 02/17/2024] Open
Abstract
Introduction Prostate cancer is the fourth most commonly diagnosed cancer among men worldwide. Various tools are used to manage disease such as conventional radiotherapy. However, it has been demonstrated that large prostate volumes were often associated with higher rates of genitourinary and gastrointestinal toxicities. Currently, the improvements in radiotherapy technology have led to the development of stereotactic body radiotherapy, which delivers higher and much more accurate radiation doses. In order to complete literature data about short-term outcome and short-term toxic effects of stereotactic body radiotherapy, we aimed to share our experience about gastrointestinal and genitourinary toxicities associated with stereotactic body radiotherapy in prostate cancer in patients over 70 years old. Methods We retrospectively reviewed the medical records of elderly patients with prostate cancer treated between 2021 and 2022. The elderly patients were treated with a non-coplanar robotic stereotactic body radiotherapy platform using real-time tracking of implanted fiducials. The prostate, with or without part of the seminal vesicles, was treated with a total dose of 36.25 Gy delivered in five fractions, each fraction being administered every other day. Results We analyzed a total of 80 elderly patients, comprising 38 low-, 37 intermediate- and 5 high-risk patients. The median follow-up duration was 12 months. We did not observe biochemical/clinical recurrence, distant metastasis, or death. Grade 2 acute genitourinary toxicity was observed in 9 patients (11.25%) and Grade 2 acute gastrointestinal toxicity in 4 patients (5.0%). We did not observe any grade 3 or more acute or late toxicities. Conclusion Over the follow-up period, we noted a low frequency of gastrointestinal and genitourinary toxicities induced by stereotactic body radiotherapy in the context of prostate cancer in elderly patients. Therefore, stereotactic body radiotherapy seems to represent a promising treatment option for elderly patients, with acceptable acute toxicity.
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Affiliation(s)
- Youssef Slama
- Clinique Sainte-Clotilde, Department of Radiotherapy, Groupe Clinifutur, Saint-Denis, La Réunion, France
| | - Gilles Baumont
- Clinique Sainte-Clotilde, Department of Radiotherapy, Groupe Clinifutur, Saint-Denis, La Réunion, France
| | - Angelique Arcambal
- Clinique Sainte-Clotilde, Department of Radiotherapy, Groupe Clinifutur, Saint-Denis, La Réunion, France
| | - Mickael Begue
- Clinique Sainte-Clotilde, Department of Radiotherapy, Groupe Clinifutur, Saint-Denis, La Réunion, France
| | - Olivier Maillot
- Clinique Sainte-Clotilde, Department of Radiotherapy, Groupe Clinifutur, Saint-Denis, La Réunion, France
| | - Rima Sayah
- Clinique Sainte-Clotilde, Department of Radiotherapy, Groupe Clinifutur, Saint-Denis, La Réunion, France
| | - Romain Castanet
- Clinique Sainte-Clotilde, Department of Radiotherapy, Groupe Clinifutur, Saint-Denis, La Réunion, France
| | - Raoul Caboche
- Clinique Sainte-Clotilde, Department of Urology, Groupe Clinifutur, Saint-Denis, La Réunion, France
| | - Pedro Liberati
- Clinique Sainte-Clotilde, Department of Urology, Groupe Clinifutur, Saint-Denis, La Réunion, France
| | - Hakim Slaoui
- Clinique Sainte-Clotilde, Department of Urology, Groupe Clinifutur, Saint-Denis, La Réunion, France
| | - Medi Bouaziz
- Clinique Sainte-Clotilde, Department of Urology, Groupe Clinifutur, Saint-Denis, La Réunion, France
| | - Olivier Borson
- Cabinet de Radiologie Les Alizés, Saint-Denis, La Réunion, France
| | - Nam P. Nguyen
- Department of Radiation Oncology, Howard University, College of Medicine, Washington, DC, United States
| | - Fabien Dutheil
- Clinique Sainte-Clotilde, Department of Radiotherapy, Groupe Clinifutur, Saint-Denis, La Réunion, France
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Willen BD, Salari K, Zureick AH, Lang D, Ye H, Marvin K, Nandalur SR, Krauss DJ. High-dose-rate brachytherapy as monotherapy versus as boost in unfavorable intermediate-risk localized prostate cancer: A matched-pair analysis. Brachytherapy 2023; 22:571-579. [PMID: 37328337 DOI: 10.1016/j.brachy.2023.05.002] [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: 08/09/2022] [Revised: 04/18/2023] [Accepted: 05/04/2023] [Indexed: 06/18/2023]
Abstract
PURPOSE High-dose-rate brachytherapy as monotherapy (HDR-M), or as a boost combined with external beam radiotherapy (HDR-B), are both suitable treatments for intermediate-risk prostate cancer. However, data directly comparing these two approaches for men with unfavorable intermediate-risk (UIR) patients are lacking. METHODS AND MATERIALS Patients with NCCN-defined UIR prostate cancer treated from 1997 to 2020 were identified in a prospectively maintained, single institution database. HDR-M and HDR-B patients were matched using three factors: age ±3 years; Gleason score (major and minor); and clinical T stage. Biochemical failure was defined as PSA nadir (nPSA) + 2. Available acute and chronic toxicities are additionally reported. RESULTS A total of 247 patients were identified (170 receiving HDR-B, 77 receiving HDR-M), ultimately yielding 70 matched pairs (140 patients) for inclusion. The median followup time was 5.2 years for HDR-M compared with 9.3 years for HDR-B (p < 0.001). The two cohorts had similar calculated prostate EQD2 (HDR-B 118 Gy vs. HDR-M 115 Gy, p = 0.977). No significant differences in OS, CSS, DM, LRR, or FFBF were identified. HDR-B had an increased rate of any acute grade 2+ gastrointestinal toxicity and worse acute dysuria and diarrhea. Chronic gastrointestinal and genitourinary toxicity was similar. CONCLUSIONS These data suggest that HDR brachytherapy as monotherapy is an effective treatment option for selected patients with unfavorable intermediate-risk prostate cancer and provides a more favorable gastrointestinal toxicity profile than HDR-B. Prospective trials should be conducted to refine the selection process for this heterogeneous cohort of patients.
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Affiliation(s)
- Benjamin D Willen
- Department of Radiation Oncology, William Beaumont Hospital, Royal Oak, MI.
| | - Kamran Salari
- Department of Radiation Oncology, William Beaumont Hospital, Royal Oak, MI
| | - Andrew H Zureick
- Department of Radiation Oncology, William Beaumont Hospital, Royal Oak, MI
| | - Doyle Lang
- Oakland University William Beaumont School of Medicine, Rochester, MI
| | - Hong Ye
- Department of Radiation Oncology, William Beaumont Hospital, Royal Oak, MI
| | - Kimberly Marvin
- Department of Radiation Oncology, William Beaumont Hospital, Royal Oak, MI
| | - Sirisha R Nandalur
- Department of Radiation Oncology, William Beaumont Hospital-Troy, Sterling Heights, MI
| | - Daniel J Krauss
- Department of Radiation Oncology, William Beaumont Hospital, Royal Oak, MI
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3
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van der Sar ECA, Braat AJAT, van der Voort-van Zyp JRN, van der Veen BS, van Leeuwen PJ, de Vries-Huizing DMV, Hendrikx JMA, Lam MGEH, Vogel WV. Tolerability of concurrent external beam radiotherapy and [ 177Lu]Lu-PSMA-617 for node-positive prostate cancer in treatment naïve patients, phase I study (PROQURE-I trial). BMC Cancer 2023; 23:268. [PMID: 36959540 PMCID: PMC10035228 DOI: 10.1186/s12885-023-10725-5] [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: 04/21/2022] [Accepted: 03/08/2023] [Indexed: 03/25/2023] Open
Abstract
BACKGROUND Prostate cancer patients with locoregional lymph node disease at diagnosis (N1M0) still have a limited prognosis despite the improvements provided by aggressive curative intent multimodal locoregional external beam radiation therapy (EBRT) with systemic androgen deprivation therapy (ADT). Although some patients can be cured and the majority of patients have a long survival, the 5-year biochemical failure rate is currently 29-47%. [177Lu]Lu-PSMA-617 has shown impressive clinical and biochemical responses with low toxicity in salvage setting in metastatic castration-resistant prostate cancer. This study aims to explore the combination of standard EBRT and ADT complemented with a single administration of [177Lu]Lu-PSMA-617 in curative intent treatment for N1M0 prostate cancer. Hypothetically, this combined approach will enhance EBRT to better control macroscopic tumour localizations, and treat undetected microscopic disease locations inside and outside EBRT fields. METHODS The PROQURE-I study is a multicenter prospective phase I study investigating standard of care treatment (7 weeks EBRT and 3 years ADT) complemented with one concurrent cycle (three, six, or nine GBq) of systemic [177Lu]Lu-PSMA-617 administered in week two of EBRT. A maximum of 18 patients with PSMA-positive N1M0 prostate cancer will be included. The tolerability of adding [177Lu]Lu-PSMA-617 will be evaluated using a Bayesian Optimal Interval (BOIN) dose-escalation design. The primary objective is to determine the maximum tolerated dose (MTD) of a single cycle [177Lu]Lu-PSMA-617 when given concurrent with EBRT + ADT, defined as the occurrence of Common Terminology Criteria for Adverse Events (CTCAE) v 5.0 grade three or higher acute toxicity. Secondary objectives include: late toxicity at 6 months, dosimetric assessment, preliminary biochemical efficacy at 6 months, quality of life questionnaires, and pharmacokinetic modelling of [177Lu]Lu-PSMA-617. DISCUSSION This is the first prospective study to combine EBRT and ADT with [177Lu]Lu-PSMA-617 in treatment naïve men with N1M0 prostate cancer, and thereby explores the novel application of [177Lu]Lu-PSMA-617 in curative intent treatment. It is considered likely that this study will confirm tolerability as the combined toxicity of these treatments is expected to be limited. Increased efficacy is considered likely since both individual treatments have proven high anti-tumour effect as mono-treatments. TRIAL REGISTRATION ClinicalTrials, NCT05162573 . Registered 7 October 2021.
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Affiliation(s)
- Esmée C A van der Sar
- Department of Radiology and Nuclear Medicine, University Medical Center Utrecht, Utrecht, The Netherlands.
| | - Arthur J A T Braat
- Department of Radiology and Nuclear Medicine, University Medical Center Utrecht, Utrecht, The Netherlands
| | | | - Betty S van der Veen
- Department of Radiation Oncology, Netherlands Cancer Institute NKI-AVL, Amsterdam, The Netherlands
| | - Pim J van Leeuwen
- Department of Urology, Netherlands Cancer Institute NKI-AVL, Amsterdam, The Netherlands
| | | | - Jeroen M A Hendrikx
- Department Nuclear Medicine, Netherlands Cancer Institute NKI-AVL, Amsterdam, The Netherlands
- Department of Pharmacy & Pharmacology, The Netherlands Cancer Institute, Amsterdam, The Netherlands
| | - Marnix G E H Lam
- Department of Radiology and Nuclear Medicine, University Medical Center Utrecht, Utrecht, The Netherlands
| | - Wouter V Vogel
- Department of Radiation Oncology, Netherlands Cancer Institute NKI-AVL, Amsterdam, The Netherlands
- Department Nuclear Medicine, Netherlands Cancer Institute NKI-AVL, Amsterdam, The Netherlands
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Kissel M, Créhange G, Graff P. Stereotactic Radiation Therapy versus Brachytherapy: Relative Strengths of Two Highly Efficient Options for the Treatment of Localized Prostate Cancer. Cancers (Basel) 2022; 14:2226. [PMID: 35565355 PMCID: PMC9105931 DOI: 10.3390/cancers14092226] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2022] [Revised: 04/18/2022] [Accepted: 04/20/2022] [Indexed: 11/16/2022] Open
Abstract
Stereotactic body radiation therapy (SBRT) has become a valid option for the treatment of low- and intermediate-risk prostate cancer. In randomized trials, it was found not inferior to conventionally fractionated external beam radiation therapy (EBRT). It also compares favorably to brachytherapy (BT) even if level 1 evidence is lacking. However, BT remains a strong competitor, especially for young patients, as series with 10-15 years of median follow-up have proven its efficacy over time. SBRT will thus have to confirm its effectiveness over the long-term as well. SBRT has the advantage over BT of less acute urinary toxicity and, more hypothetically, less sexual impairment. Data are limited regarding SBRT for high-risk disease while BT, as a boost after EBRT, has demonstrated superiority against EBRT alone in randomized trials. However, patients should be informed of significant urinary toxicity. SBRT is under investigation in strategies of treatment intensification such as combination of EBRT plus SBRT boost or focal dose escalation to the tumor site within the prostate. Our goal was to examine respective levels of evidence of SBRT and BT for the treatment of localized prostate cancer in terms of oncologic outcomes, toxicity and quality of life, and to discuss strategies of treatment intensification.
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Affiliation(s)
| | | | - Pierre Graff
- Department of Radiation Oncology, Institut Curie, 26 Rue d’Ulm, 75005 Paris, France; (M.K.); (G.C.)
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5
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Adame González CS, Romero JTÁ, Moranchel Y Rodríguez M, Leyva AF, Queijeiro MAV, Hernández MYB. Heuristic estimation of the α/β ratio for a cohort of Mexican patients with prostate cancer treated with external radiotherapy techniques. Rep Pract Oncol Radiother 2021; 26:664-673. [PMID: 34760302 DOI: 10.5603/rpor.a2021.0081] [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: 09/28/2020] [Accepted: 02/28/2021] [Indexed: 11/25/2022] Open
Abstract
Background The aim of the study was to Estimate and compare the radiobiological ratio α/β with the heuristic method for a cohort of Mexican patients with prostate cancer (PCa) who were treated with external radiotherapy (RT) techniques at three Hospital Institutions in Mexico City. With the Kaplan-Meier technique and the Cox proportional hazards model, the biochemical relapse-free survival (bRFS) is determined and characterized for cohorts of Mexican patients with PCa who received treatment with external RT. Using these clinical outcomes, the radiobiological parameter α/β is determined using the heuristic methodology of Pedicini et. al. Materials and methods The α/β is calculated from the survival curves for different treatment schemes implemented at three distinct hospitals. The Pedicini's techniques allow to determine the parameters α/β, k and N 0 when treatments are not radiobiologically equivalent, therefore, are built up of a set of curved pairs for the biologically effective dose (BED) versus the ratio α/β, where the ratio is given by the intersection for each pair of curves. Results Six different values of α/β were found: the first α/β = 2.46 Gy, the second α/β = 3.30 Gy, the third for α/β = 3.25 Gy, the fourth α/β = 3.24 Gy, the fifth α/β = 3.38 Gy and the last α/β = 4.08 Gy. These values can be explained as follows: a) The bRFS of the schemes presents a statistical variation; b) The absorbed doses given to the patient present uncertainties on the physical dosimetry that are not on the modeling; c) Finally, in the model for the bRFS of Eq. (3), there are parameters that have to be considered, such as: the number of clonogenic tumor cells N 0 , the overall treatment time (OTT), the kick-off time for tumor repopulation T k and the repopulation doubling time. Therefore, the mean value to α/β for all schemes has an average value of 3.29 (± 0.52) Gy. Conclusions The value of α / β ¯ = 3.29 ( ± 0.52 ) Gy is determined from cohorts of Mexican patients with PC a treated with external radiotherapy using the time-dependent LQ model, which is a higher value with respect to the "dogma" value of α/β 1.5 Gy obtained with the LQ model without temporal dependence. Therefore, there is a possibility of optimizing treatments radiobiologically and improving the results of bRFS in Mexican patients with PCa treated with external radiotherapy.
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Affiliation(s)
- Christian S Adame González
- Departamento de Física Médica, Centro Médico Nacional 20 de Noviembre, Ciudad de México, Mexico.,Instituto Politécnico Nacional, Escuela Superior de Física y Matemáticas, Ciudad de México, Mexico
| | | | | | - Armando Félix Leyva
- Departamento de Radioterapia, Hospital de Oncología, Centro Médico Nacional, Siglo XXI, Ciudad de México, Mexico
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6
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Fukata K, Kawamura H, Kubo N, Kanai T, Torikoshi M, Nakano T, Tashiro M, Ohno T. Retrospective comparison of rectal toxicity between carbon-ion radiotherapy and intensity-modulated radiation therapy based on treatment plan, normal tissue complication probability model, and clinical outcomes in prostate cancer. Phys Med 2021; 90:6-12. [PMID: 34521017 DOI: 10.1016/j.ejmp.2021.08.013] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/04/2021] [Revised: 08/04/2021] [Accepted: 08/27/2021] [Indexed: 10/20/2022] Open
Abstract
This retrospective study assessed the treatment planning data and clinical outcomes for 152 prostate cancer patients: 76 consecutive patients treated by carbon-ion radiation therapy and 76 consequtive patients treated by moderate hypo-fractionated intensity-modulated photon radiation therapy. These two modalities were compared using linear quadratic model equivalent doses in 2 Gy per fraction for rectal or rectal wall dose-volume histogram, 3.6 Gy per fraction-converted rectal dose-volume histogram, normal tissue complication probability model, and actual clinical outcomes. Carbon-ion radiation therapy was predicted to have a lower probability of rectal adverse events than intensity-modulated photon radiation therapy based on dose-volume histograms and normal tissue complication probability model. There was no difference in the clinical outcome of rectal adverse events between the two modalities compared in this study.
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Affiliation(s)
- Kyohei Fukata
- Cancer Center, School of Medicine, Keio University, Tokyo, Japan; Department of Radiation Oncology, Gunma University Graduate School of Medicine, Gunma, Japan; Section of Medical Physics and Engineering, Kanagawa Cancer Center, Yokohama, Japan.
| | - Hidemasa Kawamura
- Department of Radiation Oncology, Gunma University Graduate School of Medicine, Gunma, Japan; Gunma University Heavy Ion Medical Center, Gunma, Japan
| | - Nobuteru Kubo
- Department of Radiation Oncology, Gunma University Graduate School of Medicine, Gunma, Japan
| | - Tatsuaki Kanai
- Gunma University Heavy Ion Medical Center, Gunma, Japan; Osaka Heavy Ion Therapy Center, Osaka, Japan
| | - Masami Torikoshi
- Gunma University Heavy Ion Medical Center, Gunma, Japan; International Science and Technology Center, Nur-Sultan, Kazakhstan
| | - Takashi Nakano
- Department of Radiation Oncology, Gunma University Graduate School of Medicine, Gunma, Japan; Gunma University Heavy Ion Medical Center, Gunma, Japan; Quantum Life and Medical Science Directorate, National Institutes for Quantum and Radiological Science and Technology, Chiba, Japan
| | | | - Tatsuya Ohno
- Department of Radiation Oncology, Gunma University Graduate School of Medicine, Gunma, Japan; Gunma University Heavy Ion Medical Center, Gunma, Japan
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Graff P, Crehange G. [Ultra-hypofractionated radiotherapy for the treatment of localized prostate cancer: Results, limits and prospects]. Cancer Radiother 2021; 25:684-691. [PMID: 34274223 DOI: 10.1016/j.canrad.2021.06.028] [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: 06/17/2021] [Accepted: 06/21/2021] [Indexed: 10/20/2022]
Abstract
Still an emerging approach a few years ago, stereotactic body radiation therapy (SBRT) has ranked as a valid option for the treatment of localized prostate cancer. Inherent properties of prostatic adenocarcinoma (low α/β) make it the perfect candidate. We propose a critical review of the literature trying to put results into perspective to identify their strengths, limits and axes of development. Technically sophisticated, the stereotactic irradiation of the prostate is well tolerated. Despite the fact that median follow-up of published data is still limited, ultra-hypofractionated radiotherapy seems very efficient for the treatment of low and intermediate risk prostate cancers. Data seem satisfying for high-risk cancers as well. New developments are being studied with a main interest in treatment intensification for unfavorable intermediate risk and high-risk cancers. Advantage is taken of the sharp dose gradient of stereotactic radiotherapy to offer safe reirradiation to patients with local recurrence in a previously irradiated area.
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Affiliation(s)
- P Graff
- Département d'oncologie radiothérapie, Institut Curie, 26, rue d'Ulm, 75005 Paris, France.
| | - G Crehange
- Département d'oncologie radiothérapie, Institut Curie, 26, rue d'Ulm, 75005 Paris, France
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8
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[Low-dose irradiation of non-malignant diseases: Did we throw the baby out with the bathwater?]. Cancer Radiother 2021; 25:279-282. [PMID: 33451911 DOI: 10.1016/j.canrad.2020.09.002] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2020] [Accepted: 09/08/2020] [Indexed: 12/25/2022]
Abstract
The irradiation of non-malignant diseases, essentially for anti-inflammatory purpose, have been largely proposed and performed worldwide until the 1970-80s. At that time, the better assessment of the radio-induced malignancies, essentially in children and young patients, as well as the efficacy of the new anti-inflammatory drugs (steroids and non-steroids), led to the almost disappearance of those techniques, at least in France. In contrast, our German colleagues are still going on treating about 50,000 patients per year for non-malignant (more or less severe) diseases. After a short historical overview, the present article suggests that we were possibly going too far in the rejection of those low-dose irradiations for benign lesions. The recent emergence of new preclinical data, the better understanding of the risk of radio-induced secondary tumours (almost nil in the elderly), and the severity of some situations, such as the cytokine storm of the COVID-19, should probably lead us to reconsider those low - and sometimes very low (less than 1Gy) - irradiations for well-selected indications in the elderly.
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9
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Hasan S, Gorovets D, Lehrer E, Lazarev S, Press RH, Garg M, Mehta KJ, Chhabra AM, Isabelle Choi J, Simone CB. Optimal timing of radiotherapy in high risk prostate cancer: Do missed days matter? Clin Transl Radiat Oncol 2020; 26:47-54. [PMID: 33305024 PMCID: PMC7718118 DOI: 10.1016/j.ctro.2020.11.006] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2020] [Revised: 11/10/2020] [Accepted: 11/12/2020] [Indexed: 12/19/2022] Open
Abstract
Introduction High-risk prostate cancer is associated with poorer overall survival (OS) and biochemical control compared to more favorable risk groups. External beam radiation therapy (EBRT) is widely used; however, outcomes data are limited with respect to time elapsed between diagnosis and initiation of EBRT. Methods The National Cancer Database was queried from 2004 to 2015 for patients diagnosed with high-risk adenocarcinoma of the prostate who received androgen deprivation therapy (ADT) and definitive EBRT. Logistic regression was utilized to determine covariates associated with missing EBRT treatments. OS was analyzed using multivariate cox proportional hazards models and propensity score matching. Results 9,610 patients met inclusion criteria with median follow-up of 40.6 months and median age of 72 years. Median PSA was 8.7 and median EBRT dose was 78 Gy. ADT was initiated at a median of 36 days and EBRT at a median of 63 days post-diagnosis. Median number of prolonged treatment days was 2.2. Black race (OR: 1.40; p < 0.01), treatment at a community clinic (OR: 1.32; p < 0.01), and living in an urban/densely populated area were associated with prolonged treatment. Time elapsed between ADT and EBRT > 74 days (HR: 1.20; p = 0.01) and prolonged treatment>3 days of EBRT (HR: 1.26; p = 0.005) were associated with an increased hazard of death. The 5-year OS was 79.6% and 82.9% for patients with prolonged treatment of 3 days or more of EBRT and those missing 3 days or less, respectively (p = 0.0006). Conclusion In this hypothesis-generating study, prolonged treatment delays and missing three or more EBRT treatments was associated with poorer OS in patients with high-risk adenocarcinoma of the prostate.
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Affiliation(s)
- Shaakir Hasan
- New York Proton Center, New York, NY, USA
- Corresponding author at: New York Proton Center, 225 East 126 Street, New York, NY 10035, USA.
| | - Daniel Gorovets
- Department of Radiation Oncology, Memorial Sloan Kettering Cancer Center, New York, NY, USA
| | - Eric Lehrer
- Department of Radiation Oncology, Icahn School of Medicine at Mount Sinai, New York, NY, USA
| | - Stanislav Lazarev
- Department of Radiation Oncology, Icahn School of Medicine at Mount Sinai, New York, NY, USA
| | | | - Madhur Garg
- Department of Radiation Oncology, Montefiore Medical Center, Bronx, NY, USA
| | - Keyur J. Mehta
- Department of Radiation Oncology, Montefiore Medical Center, Bronx, NY, USA
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10
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Laville A, Coutte A, Blanchard P, Sun R, Deutsch E, Latorzeff I. [Treatment of primary disease for synchronous metastatic prostate cancer]. Cancer Radiother 2020; 24:547-553. [PMID: 32855028 DOI: 10.1016/j.canrad.2020.06.011] [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: 05/15/2020] [Revised: 06/10/2020] [Accepted: 06/17/2020] [Indexed: 11/30/2022]
Abstract
The management of early metastatic prostate cancer is based on systemic treatment by androgen deprivation therapy with or without chemotherapy or next-generation anti-androgen therapies. Local treatment of the prostate was initially used only to alleviate local symptoms. However, local radiotherapy of the prostate has been the subject of retrospective and prospective studies in patients with better prognostic factors, particularly in oligometastatic status. The results of these studies support that prostate radiotherapy can prolong the survival of patients with a low metastatic burden. This article states the biological bases, the main published and future published studies aimed to embed this strategy to optimize therapeutic management.
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Affiliation(s)
- A Laville
- Département de radiothérapie, Gustave-Roussy cancer campus, 114, rue Édouard-Vaillant, 94800 Villejuif, France; Département de radiothérapie, CHU d'Amiens, 1, rue du Professeur-Christian-Cabrol, 80050, France.
| | - A Coutte
- Département de radiothérapie, CHU d'Amiens, 1, rue du Professeur-Christian-Cabrol, 80050, France
| | - P Blanchard
- Département de radiothérapie, Gustave-Roussy cancer campus, 114, rue Édouard-Vaillant, 94800 Villejuif, France
| | - R Sun
- Département de radiothérapie, Gustave-Roussy cancer campus, 114, rue Édouard-Vaillant, 94800 Villejuif, France
| | - E Deutsch
- Département de radiothérapie, Gustave-Roussy cancer campus, 114, rue Édouard-Vaillant, 94800 Villejuif, France; Inserm, UMR 1030 « radiosensibilité des tumeurs et tissus sains », 114, rue Édouard-Vaillant, 94805 Villejuif, France
| | - I Latorzeff
- Département de radiothérapie-oncologie, bâtiment Atrium, clinique Pasteur, 1, rue de la Petite-Vitesse, 31300 Toulouse, France
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Lapierre A, Horn S, Créhange G, Enachescu C, Latorzeff I, Supiot S, Sargos P, Hennequin C, Chapet O. Radiothérapie stéréotaxique extracrânienne : quelle machine pour quelle indication ? Stéréotaxie prostatique. Cancer Radiother 2019; 23:651-657. [DOI: 10.1016/j.canrad.2019.06.009] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2019] [Accepted: 06/26/2019] [Indexed: 10/26/2022]
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12
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[Moderate or extreme hypofractionation and localized prostate cancer: The times are changing]. Cancer Radiother 2019; 23:503-509. [PMID: 31471253 DOI: 10.1016/j.canrad.2019.07.139] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2019] [Revised: 07/08/2019] [Accepted: 07/09/2019] [Indexed: 02/07/2023]
Abstract
There are many treatment options for localized prostate cancers, including active surveillance, brachytherapy, external beam radiotherapy, and radical prostatectomy. Quality of life remains a primary objective in the absence of superiority of one strategy over another in terms of specific survival with similar long-term biochemical control rates. Despite a significant decrease in digestive and urinary toxicities thanks to IMRT and IGRT, external radiotherapy remains a treatment that lasts approximately 2 months or 1.5 months, when combined with a brachytherapy boost. Given the specific radiosensitivity of this tumor, several randomized studies have shown that a hypofractionated scheme is not inferior in terms of biochemical control and toxicities, allowing to divide the number of fractions by a factor 2 to 8. Given that SBRT becomes a validated therapeutic option for a selected population of patients with localized prostate cancer, extreme hypofractionation is becoming a strong challenger of conventional external radiotherapy or brachytherapy.
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