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Radiotherapy and Oncology: Journal of the European Society for Therapeutic Radiology and Oncology

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https://www.readbyqxmd.com/read/28923576/dose-escalation-intensity-modulated-radiotherapy-based-concurrent-chemoradiotherapy-is-effective-for-advanced-stage-thoracic-esophageal-squamous-cell-carcinoma
#1
Chia-Lun Chang, Hsieh-Chih Tsai, Wei-Cheng Lin, Jer-Hwa Chang, Han-Lin Hsu, Jyh-Ming Chow, Kevin Sheng-Po Yuan, Alexander T H Wu, Szu-Yuan Wu
PURPOSE: No studies have investigated the effects of irradiation-dose escalation intensity-modulated radiotherapy (IMRT)-based concurrent chemoradiotherapy (CCRT) in patients with thoracic esophageal squamous cell carcinoma (TESCC). PATIENTS AND METHODS: We analyzed data from patients with TESCC who were enrolled in the Taiwan Cancer Registry database. To compare treatment outcomes, the patients were categorized into two groups according to their radiotherapy doses: group 1, who received CCRT<60Gy with IMRT, and group 2, who received CCRT≥60Gy with IMRT...
September 15, 2017: Radiotherapy and Oncology: Journal of the European Society for Therapeutic Radiology and Oncology
https://www.readbyqxmd.com/read/28923575/radioresistance-of-the-breast-tumor-is-highly-correlated-to-its-level-of-cancer-stem-cell-and-its-clinical-implication-for-breast-irradiation
#2
Xiangrong Sharon Qi, Frank Pajonk, Susan McCloskey, Daniel A Low, Patrick Kupelian, Michael Steinberg, Ke Sheng
BACKGROUND AND PURPOSE: Growing evidence suggested the coexistence of cancer stem cells (CSCs) within solid tumors. We aimed to study radiosensitivity parameters for the CSCs and differentiated tumor cells (TCs) and the correlation of the fractions of CSCs to the overall tumor radioresistance. MATERIAL AND METHODS: Surviving fractions of breast cancer cell lines were analyzed using a dual-compartment Linear-quadratic model with independent fitting parameters: radiosensitive αTC, βTC, αCSC, βCSC, and fraction of CSCs f...
September 15, 2017: Radiotherapy and Oncology: Journal of the European Society for Therapeutic Radiology and Oncology
https://www.readbyqxmd.com/read/28923574/a-systematic-review-of-health-economic-evaluation-in-adjuvant-breast-radiotherapy-quality-counted-by-numbers
#3
Chris Monten, Liv Veldeman, Nick Verhaeghe, Yolande Lievens
BACKGROUND: Evolving practice in adjuvant breast radiotherapy inevitably impacts healthcare budgets. This is reflected in a rise of health economic evaluations (HEE) in this domain. The available HEE literature was analysed qualitatively and quantitatively, using available instruments. METHODS: HEEs published between 1/1/2000 and 31/10/2016 were retrieved through a systematic search in Medline, Cochrane and Embase. A quality-assessment using CHEERS (Consolidated Health Economic Evaluation Reporting Standards) was translated into a quantitative score and compared with Tufts Medical Centre CEA registry and Quality of Health Economic Studies (QHES) results...
September 15, 2017: Radiotherapy and Oncology: Journal of the European Society for Therapeutic Radiology and Oncology
https://www.readbyqxmd.com/read/28919006/histology-of-non-small-cell-lung-cancer-predicts-the-response-to-stereotactic-body-radiotherapy
#4
Juliane Hörner-Rieber, Denise Bernhardt, Julian Dern, Laila König, Sebastian Adeberg, Angela Paul, Claus Peter Heussel, Jutta Kappes, Hans Hoffmann, Felix J P Herth, Jürgen Debus, Arne Warth, Stefan Rieken
BACKGROUND AND PURPOSE: To investigate the prognostic impact of different histological subtypes of non-small cell lung cancer (NSCLC) on outcome following stereotactic body radiotherapy (SBRT) for NSCLC patients. MATERIALS AND METHODS: We analyzed 126 consecutive patients with early-stage adenocarcinoma or squamous cell carcinoma treated with SBRT from 2004 to 2016. Adenocarcinoma patients were further sub-classified as high-risk or low-risk tumors. RESULTS: With a median follow-up time of 22months, 2-year overall survival (OS), local (LC), and distant control (DC) were 68%, 90% and 79%, respectively...
September 14, 2017: Radiotherapy and Oncology: Journal of the European Society for Therapeutic Radiology and Oncology
https://www.readbyqxmd.com/read/28919005/ex-vivo-%C3%AE-h2ax-radiation-sensitivity-assay-in-prostate-cancer-inter-patient-and-intra-patient-heterogeneity
#5
Chiara De-Colle, Ala Yaromina, Joerg Hennenlotter, Howard Thames, Arndt-Christian Mueller, Tim Neumann, Arnulf Stenzl, Marcus Scharpf, Falko Fend, Umberto Ricardi, Michael Baumann, Daniel Zips, Apostolos Menegakis
INTRODUCTION: The aim of the study is to assess inter-patient and intra-patient heterogeneity in tumour cell radiosensitivity using the ex vivo γH2AX assay in prostate cancer specimens. METHODS: Excised specimens from untreated prostate cancer patients were cultivated 24h in media, irradiated ex vivo and fixed after 24h. Residual γH2AX foci were counted and the slope of the dose response was calculated. Intra-patient heterogeneity was studied from three to seven different biopsies...
September 14, 2017: Radiotherapy and Oncology: Journal of the European Society for Therapeutic Radiology and Oncology
https://www.readbyqxmd.com/read/28919004/stereotactic-body-radiotherapy-for-lung-cancer-patients-with-idiopathic-interstitial-pneumonias
#6
Yuichiro Tsurugai, Atsuya Takeda, Naoko Sanuki, Tatsuji Enomoto, Takeshi Kaneko, Yu Hara, Tomikazu Mizuno, Noriyuki Saeki, Yousuke Aoki, Yohei Oku, Takeshi Akiba, Etsuo Kunieda
PURPOSE: To compare toxicity and survival after stereotactic body radiotherapy (SBRT) between lung cancer patients with or without idiopathic interstitial pneumonias (IIPs), and to investigate the potential value of SBRT for the patients. METHODS: Among lung cancer patients receiving SBRT between 2005 and 2016, we evaluated those treated with a total dose of 40-60Gy in five fractions with curative intent who either were staged as cT1-4N0M0 or experienced postoperative isolated local recurrence...
September 14, 2017: Radiotherapy and Oncology: Journal of the European Society for Therapeutic Radiology and Oncology
https://www.readbyqxmd.com/read/28919003/inter-observer-agreement-in-gtv-delineation-of-bone-metastases-on-ct-and-impact-of-mr-imaging-a-multicenter-study
#7
A S Gerlich, J M van der Velden, A N T J Kotte, C L Tseng, G Fanetti, W S C Eppinga, N Kasperts, M P W Intven, F A Pameijer, M E P Philippens, H M Verkooijen, E Seravalli
BACKGROUND AND PURPOSE: The use of Stereotactic Body Radiotherapy (SBRT) for bone metastases is increasing rapidly. Therefore, knowledge of the inter-observer differences in tumor volume delineation is essential to guarantee precise dose delivery. The aim of this study is to compare inter-observer agreement in bone metastases delineated on different imaging modalities. MATERIAL AND METHODS: Twenty consecutive patients with bone metastases treated with SBRT were selected...
September 14, 2017: Radiotherapy and Oncology: Journal of the European Society for Therapeutic Radiology and Oncology
https://www.readbyqxmd.com/read/28917586/dosimetric-comparison-to-the-heart-and-cardiac-substructure-in-a-large-cohort-of-esophageal-cancer-patients-treated-with-proton-beam-therapy-or-intensity-modulated-radiation-therapy
#8
Yutaka Shiraishi, Cai Xu, Jinzhong Yang, Ritsuko Komaki, Steven H Lin
PURPOSE: To compare heart and cardiac substructure radiation exposure using intensity-modulated radiotherapy (IMRT) vs. proton beam therapy (PBT) for patients with mid- to distal esophageal cancer who received chemoradiation therapy. METHODS AND MATERIALS: We identified 727 esophageal cancer patients who received IMRT (n=477) or PBT (n=250) from March 2004 to December 2015. All patients were treated to 50.4Gy with IMRT or to 50.4 cobalt Gray equivalents with PBT...
September 13, 2017: Radiotherapy and Oncology: Journal of the European Society for Therapeutic Radiology and Oncology
https://www.readbyqxmd.com/read/28916225/stereotactic-radiosurgery-of-early-melanoma-brain-metastases-after-initiation-of-anti-ctl-4-treatment-is-associated-with-improved-intracranial-control
#9
Yi An, Wen Jiang, Betty Y S Kim, Jack M Qian, Chad Tang, Penny Fang, Jennifer Logan, Neil M D'Souza, Lauren E Haydu, Xin A Wang, Kenneth R Hess, Harriet Kluger, Isabella C Glitza, Anita Mahajan, James W Welsh, Steven H Lin, James B Yu, Michael A Davies, Patrick Hwu, Erik P Sulman, Paul D Brown, Veronica L S Chiang, Jing Li
BACKGROUND: Numerous studies suggest that radiation can boost antitumor immune response by stimulating release of tumor-specific antigens. However, the optimal timing between radiotherapy and immune checkpoint blockade to achieve potentially synergistic benefits is unclear. MATERIAL AND METHODS: Multi-institutional retrospective analysis was conducted of ninety-nine metastatic melanoma patients from 2007 to 2014 treated with ipilimumab who later received stereotactic radiosurgery (SRS) for new brain metastases that developed after starting immunotherapy...
September 12, 2017: Radiotherapy and Oncology: Journal of the European Society for Therapeutic Radiology and Oncology
https://www.readbyqxmd.com/read/28916224/lack-of-differences-in-radiation-induced-immunogenicity-parameters-between-hpv-positive-and-hpv-negative-human-hnscc-cell-lines
#10
Karolin Schneider, Vanesa Bol, Vincent Grégoire
BACKGROUND AND PURPOSE: Clinical studies indicate that patients with HPV/p16-associated head & neck squamous cell carcinoma (HNSCC) represent a subgroup with a better prognosis and improved response to conventional radiotherapy. Involvement of immune-based factors has been hypothesized. In the present study, we investigated radiation-induced differences in release of damage associated molecular patterns (DAMPs), cytokines and activation of dendritic cells (DCs) in HPV-positive and negative HNSCC cancer cell lines...
September 12, 2017: Radiotherapy and Oncology: Journal of the European Society for Therapeutic Radiology and Oncology
https://www.readbyqxmd.com/read/28916223/bet-bromodomain-inhibitors-modulate-epigenetic-patterns-at-the-diacylglycerol-kinase-alpha-enhancer-associated-with-radiation-induced-fibrosis
#11
Gintvile Valinciute, Christoph Weigel, Marlon R Veldwijk, Christopher C Oakes, Carsten Herskind, Frederik Wenz, Christoph Plass, Peter Schmezer, Odilia Popanda
BACKGROUND AND PURPOSE: Fibrosis is a frequent adverse effect of radiotherapy and no effective treatments are currently available to prevent or reverse fibrotic disease. We have previously identified altered epigenetic patterns at a gene enhancer of the diacylglycerol kinase alpha (DGKA) locus in normal skin fibroblasts derived from fibrosis patients. An open chromatin pattern related to radiation-inducibility of DGKA is associated with onset of radiation-induced fibrosis. Here, we explore epigenetic modulation of DGKA as a way to mitigate predisposition to fibrosis...
September 12, 2017: Radiotherapy and Oncology: Journal of the European Society for Therapeutic Radiology and Oncology
https://www.readbyqxmd.com/read/28893415/the-prognostic-value-of-derived-neutrophil-to-lymphocyte-ratio-in-oesophageal-cancer-treated-with-definitive-chemoradiotherapy
#12
Samantha Cox, Christopher Hurt, Tal Grenader, Somnath Mukherjee, John Bridgewater, Thomas Crosby
BACKGROUND AND PURPOSE: The derived neutrophil-lymphocyte ratio (dNLR) is a validated prognostic biomarker for cancer survival but has not been extensively studied in locally-advanced oesophageal cancer treated with definitive chemoradiotherapy (dCRT). We aimed to identify the prognostic value of dNLR in patients recruited to the SCOPE1 trial. MATERIALS AND METHODS: 258 patients were randomised to receive dCRT±cetuximab. Kaplan-Meier's curves and both univariable and multivariable Cox regression models were calculated for overall survival (OS), progression free survival (PFS), local PFS inside the radiation volume (LPFSi), local PFS outside the radiation volume (LPFSo), and distant PFS (DPFS)...
September 8, 2017: Radiotherapy and Oncology: Journal of the European Society for Therapeutic Radiology and Oncology
https://www.readbyqxmd.com/read/28893414/transcriptional-mediated-effects-of-radiation-on-the-expression-of-immune-susceptibility-markers-in-melanoma
#13
Lauryn R Werner, Jasdeep S Kler, Monica M Gressett, Maureen Riegert, Lindsey K Werner, Clinton M Heinze, Joseph G Kern, Mahyar Abbariki, Amy K Erbe, Ravi B Patel, Raghava N Sriramaneni, Paul M Harari, Zachary S Morris
BACKGROUND AND PURPOSE: We recently reported a time-sensitive, cooperative, anti-tumor effect elicited by radiation (RT) and intra-tumoral-immunocytokine injection in vivo. We hypothesized that RT triggers transcriptional-mediated changes in tumor expression of immune susceptibility markers at delayed time points, which may explain these previously observed time-dependent effects. MATERIALS AND METHODS: We examined the time course of changes in expression of immune susceptibility markers following in vitro or in vivo RT in B78 murine melanoma and A375 human melanoma using flow cytometry, immunoblotting, and qPCR...
September 8, 2017: Radiotherapy and Oncology: Journal of the European Society for Therapeutic Radiology and Oncology
https://www.readbyqxmd.com/read/28888706/molecular-radiation-biology-oncology-and-its-impact-on-preclinical-and-clinical-research-in-radiotherapy
#14
H Peter Rodemann, Niloy Ranjan Datta, Stephan Bodis
No abstract text is available yet for this article.
September 6, 2017: Radiotherapy and Oncology: Journal of the European Society for Therapeutic Radiology and Oncology
https://www.readbyqxmd.com/read/28870637/a-hierarchical-bayesian-approach-to-calibrating-the-linear-quadratic-model-from-clonogenic-survival-assay-data
#15
Joe Collis, Michael R Hill, James R Nicol, Philip J Paine, Jonathan A Coulter
We propose a Bayesian hierarchical model applicable to the calibration of the linear-quadratic model of radiation dose-response. Experimental data used in model calibration were taken from a clonogenic survival assay conducted on human breast cancer cells (MDA-MB-231) across a range of radiation doses (0-6Gy). Employing Markov-chain Monte Carlo methods, we calibrated the proposed Bayesian hierarchical model, computed posterior distributions for the model parameters and survival fraction dose-response probability densities...
September 1, 2017: Radiotherapy and Oncology: Journal of the European Society for Therapeutic Radiology and Oncology
https://www.readbyqxmd.com/read/28867558/dose-volume-histogram-analysis-of-brainstem-necrosis-in-head-and-neck-tumors-treated-using-carbon-ion-radiotherapy
#16
Katsuyuki Shirai, Kyohei Fukata, Akiko Adachi, Jun-Ichi Saitoh, Atsushi Musha, Takanori Abe, Tatsuaki Kanai, Daijiro Kobayashi, Yuka Shigeta, Satoshi Yokoo, Kazuaki Chikamatsu, Tatsuya Ohno, Takashi Nakano
BACKGROUND AND PURPOSE: We aimed to evaluate the relationship between brainstem necrosis and dose-volume histograms in patients with head and neck tumors after carbon-ion radiotherapy. MATERIAL AND METHODS: We evaluated 85 patients with head and neck tumors who underwent carbon-ion radiotherapy and were followed-up for ≥12months. Brainstem necrosis was evaluated using the Common Terminology Criteria for Adverse Events (version 4.0). RESULTS: The median follow-up was 24months, and four patients developed grade 1 brainstem necrosis, with 2-year and 3-year cumulative rates of 2...
August 31, 2017: Radiotherapy and Oncology: Journal of the European Society for Therapeutic Radiology and Oncology
https://www.readbyqxmd.com/read/28864073/treatment-outcomes-after-reduction-of-the-target-volume-of-intensity-modulated-radiotherapy-following-induction-chemotherapy-in-patients-with-locoregionally-advanced-nasopharyngeal-carcinoma-a-prospective-multi-center-randomized-clinical-trial
#17
Hongru Yang, Xin Chen, Sheng Lin, Jinfeng Rong, Mi Yang, Qinglian Wen, Changling Shang, Lijia He, Peirong Ren, Shan Xu, Jianwen Zhang, Qiaoli Liu, Haowen Pang, Xiangxiang Shi, Juan Fan, Xiaoyang Sun, Daiyuan Ma, Bangxian Tan, Tao Zhang, Ling Zhang, Defeng Hu, Xiaobo Du, Yu Zhang, Shiming Wen, Xinping Zhang, Jingbo Wu
PURPOSE: To investigate whether reducing the target volume of intensity-modulated radiotherapy (IMRT) after induction chemotherapy (IC) improves the quality of life (QOL) in locoregionally advanced nasopharyngeal carcinoma (NPC) without decreasing the local control and survival rate. PATIENTS AND METHODS: A total number of 212 NPC patients staged as III-IVb were randomly assigned to group A (n=97) or group B (n=115) in this prospective clinical trial. All patients received IC followed by cisplatin concurrent with IMRT...
August 29, 2017: Radiotherapy and Oncology: Journal of the European Society for Therapeutic Radiology and Oncology
https://www.readbyqxmd.com/read/28859933/evaluation-of-high-dose-volumetric-ct-to-reduce-inter-observer-delineation-variability-and-ptv-margins-for-prostate-cancer-radiotherapy
#18
Hamideh Alasti, Young-Bin Cho, Charles Catton, Alejandro Berlin, Peter Chung, Andrew Bayley, Aaron Vandermeer, Vickie Kong, David Jaffray
PURPOSE: The aim was to determine whether the enhanced soft tissue contrast provided by high-dose volumetric CT (HDVCT) can reduce inter-observer variability in delineating prostate compared to helical conventional CT (CCT) scans and 3T MRI scans for patients undergoing radical prostate cancer radiotherapy. Secondly, to quantify the potential PTV reduction with decreased inter-observer variability. MATERIALS AND METHODS: A 320 slice volumetric CT scanner was used...
August 28, 2017: Radiotherapy and Oncology: Journal of the European Society for Therapeutic Radiology and Oncology
https://www.readbyqxmd.com/read/28859932/the-role-of-radical-radiotherapy-in-the-management-of-malignant-pleural-mesothelioma-a-systematic-review
#19
REVIEW
Miranda Ashton, Noelle O'Rourke, Suzanne Currie, Andreas Rimner, Anthony Chalmers
Malignant pleural mesothelioma (MPM) is a devastating disease with limited treatment options and a dismal prognosis. Attempts to employ radical radiotherapy in this disease have been limited by the complex shape of the pleura and the dose restrictions necessitated by the close proximity of radiosensitive structures. Recent shifts towards a 'lung sparing' surgical approach in MPM have further heightened these challenges. The aim of this systematic review is to assess recent advances in radiotherapy planning and delivery, to ascertain how these developments have impacted on the feasibility of delivering photon-based, high-dose radiotherapy with radical intent in MPM...
August 28, 2017: Radiotherapy and Oncology: Journal of the European Society for Therapeutic Radiology and Oncology
https://www.readbyqxmd.com/read/28844787/are-proms-sufficient-to-record-late-outcome-of-breast-cancer-patients-treated-with-radiotherapy-a-comparison-between-patient-and-clinician-reported-outcome-through-an-outpatient-clinic-after-10years-of-follow-up
#20
P J A M Brouwers, J van Loon, R M A Houben, J Paulissen, S M E Engelen, M Heuts, M de Boer, K Verhoeven, D De Ruysscher, L J Boersma
AIM: To investigate whether breast cancer patients' visits to an outpatient clinic for late outcome (OCLO) can be replaced by patient reported outcome measures (PROMs), by comparing late toxicity scored at the OCLO with PROMs. METHODS: All breast cancer patients treated in our institute with adjuvant radiotherapy 10-11years ago were invited to visit the OCLO, and for filling out PROM-questionnaires. Concordance rate between PROMs and OCLO-reported outcome and the percentage of patients with ≥2 degrees difference in toxicity level between patient and clinician was assessed...
August 24, 2017: Radiotherapy and Oncology: Journal of the European Society for Therapeutic Radiology and Oncology
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