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https://www.readbyqxmd.com/read/28453749/an-independently-validated-nomogram-for-individualized-estimation-of-survival-among-patients-with-newly-diagnosed-glioblastoma-nrg-oncology-rtog-0525-and-0825
#1
Haley Gittleman, Daniel Lim, Michael W Kattan, Arnab Chakravarti, Mark R Gilbert, Andrew B Lassman, Simon S Lo, Mitchell Machtay, Andrew E Sloan, Erik P Sulman, Devin Tian, Michael A Vogelbaum, Tony J C Wang, Marta Penas-Prado, Emad Youssef, Deborah T Blumenthal, Peixin Zhang, Minesh P Mehta, Jill S Barnholtz-Sloan
Background.: Glioblastoma (GBM) is the most common primary malignant brain tumor. Nomograms are often used for individualized estimation of prognosis. This study aimed to build and independently validate a nomogram to estimate individualized survival probabilities for patients with newly diagnosed GBM, using data from 2 independent NRG Oncology Radiation Therapy Oncology Group (RTOG) clinical trials. Methods.: This analysis included information on 799 (RTOG 0525) and 555 (RTOG 0825) eligible and randomized patients with newly diagnosed GBM and contained the following variables: age at diagnosis, race, gender, Karnofsky performance status (KPS), extent of resection, O6-methylguanine-DNA methyltransferase (MGMT) methylation status, and survival (in months)...
May 1, 2017: Neuro-oncology
https://www.readbyqxmd.com/read/28453703/heart-dose-exposure-as-prognostic-marker-after-radiotherapy-for-resectable-stage-iiia-b-non-small-cell-lung-cancer-secondary-analysis-of-a-randomized-trial
#2
M Guberina, W Eberhardt, M Stuschke, T Gauler, F Heinzelmann, D Cheufou, M Kimmich, G Friedel, H Schmidberger, K Darwiche, V Jendrossek, M Schuler, G Stamatis, C Pöttgen
Background: Heart exposure to ionizing irradiation can cause ischaemic heart disease. The partial heart volume receiving ≥5 Gy (heartV5) was supposed to be an independent prognostic factor for survival after radiochemotherapy for locally advanced non-small-cell lung cancer (NSCLC). But validation of the latter hypothesis is needed under the concurrent risks of lung cancer patients. Patients and methods: The ESPATUE phase III trial recruited patients with potentially operable IIIA(N2)/selected IIIB NSCLC between 01/2004 and 01/2013...
May 1, 2017: Annals of Oncology: Official Journal of the European Society for Medical Oncology
https://www.readbyqxmd.com/read/28433413/stereotactic-ablative-radiotherapy-in-the-treatment-of-low-and-intermediate-risk-prostate-cancer-is-there-an-optimal-dose
#3
Joelle Helou, Laura D'Alimonte, Harvey Quon, Andrea Deabreu, Kristina Commisso, Patrick Cheung, William Chu, Alexandre Mamedov, Melanie Davidson, Ananth Ravi, Andrew Loblaw
PURPOSE: To investigate if stereotactic ablative radiotherapy (SABR) dose is associated with PSA at 3years (PSA3y) in the treatment of localized prostate cancer and to explore predictors of late genitourinary (GU) toxicity. MATERIALS AND METHODS: Three prospective trials of SABR were undertaken at our institution: 1) 35Gy/5 fractions/29days; 2) 40Gy/5 fractions/29days; 3) 40Gy/5 fractions/11 or 29days. PSA3y was analyzed as a continuous variable. Toxicity was defined as the worst new toxicity and assessed using the radiation therapy oncology group (RTOG) late morbidity scheme...
April 19, 2017: Radiotherapy and Oncology: Journal of the European Society for Therapeutic Radiology and Oncology
https://www.readbyqxmd.com/read/28428149/local-control-and-toxicity-of-adaptive-radiotherapy-using-weekly-ct-imaging-results-from-the-lartia-trial-in-stage-iii-nsclc
#4
Sara Ramella, Michele Fiore, Sonia Silipigni, Maria Cristina Zappa, Massimo Jaus, Antonio Maria Alberti, Paolo Matteucci, Elisabetta Molfese, Patrizia Cornacchione, Carlo Greco, Lucio Trodella, Edy Ippolito, Rolando Maria D'Angelillo
INTRODUCTION: Anatomical change of tumor during radiotherapy contributes to target missing. However, in case of tumor shrinkage adaptation of volume could results in an increased incidence of recurrences in the area of target reduction. This study aims to investigate the incidence of failure of adaptive approach and in particular the risk of local recurrence in the area excluded after replanning. METHODS: In this prospective study, LA-NSCLC patients treated with concomitant chemoradiation underwent weekly chest-CT simulation during treatment...
April 17, 2017: Journal of Thoracic Oncology
https://www.readbyqxmd.com/read/28407345/dosimetric-impacts-of-endorectal-balloon-in-cyberknife-stereotactic-body-radiation-therapy-sbrt-for-early-stage-prostate-cancer
#5
Hong F Xiang, Hsiao-Ming Lu, Jason A Efstathiou, Anthony L Zietman, Ricardo De Armas, Kathryn Harris, B Nicolas Bloch, Muhammad Mustafa Qureshi, Sean Keohan, Ariel E Hirsch
PURPOSE: In SBRT for prostate cancer, higher fractional dose to the rectum is a major toxicity concern due to using smaller PTV margin and hypofractionation. We investigate the dosimetric impact on rectum using endorectal balloon (ERB) in prostate SBRT. MATERIALS AND METHODS: Twenty prostate cancer patients were included in a retrospective study, ten with ERB and 10 without ERB. Optimized SBRT plans were generated on CyberKnife MultiPlan for 5 × 7.25 Gy to PTV under RTOG-0938 protocol for early-stage prostate cancer...
April 13, 2017: Journal of Applied Clinical Medical Physics
https://www.readbyqxmd.com/read/28401452/polymorphism-of-promoter-region-of-tnfrsf1a-gene-610%C3%A2-t%C3%A2-%C3%A2-g-as-a-novel-predictive-factor-for-radiotherapy-induced-oral-mucositis-in-hnc-patients
#6
Anna Brzozowska, Tomasz Powrózek, Iwona Homa-Mlak, Radosław Mlak, Marzanna Ciesielka, Paweł Gołębiowski, Teresa Małecka-Massalska
Every year, about 650 thousand new cases of Head and Neck Cancer (HNC) are diagnosed globally. Apart from surgery, radiotherapy (RTH), chemotherapy (CHT) or its combination is used in the treatment of HNC. One of the most frequent complications and, at the same time, limitations of RTH is oral mucositis (OM). Proinflammatory cytokines (including TNF-α) play a key role in the development of OM. Genetic alterations, i.e. single nucleotide polymorphisms (SNPs) within genes encoding for receptors for TNF (ie. TNFRSF1A) may change their function...
April 11, 2017: Pathology Oncology Research: POR
https://www.readbyqxmd.com/read/28397507/-stereotactic-body-radiotherapy-of-prostate-cancer-effectiveness-and-toxicity
#7
E Skácelíková, D Feltl, J Cvek, T Jelenová, L Knybel, H Tomášková
BACKGROUND: Prostate cancer is the most prevalent cancer in males and its incidence is steadily increasing. Most cases of prostate cancer are diagnosed during the early asymptomatic period, in which case the prognosis is very good. Therapies differ widely in their efficacies and toxicities, and this is an important consideration when it comes to deciding which treatment is optimal for a particular patient. One treatment method for early stage prostate cancer is stereotactic body radiotherapy (SBRT)...
2017: Klinická Onkologie: Casopis Ceské a Slovenské Onkologické Spolecnosti
https://www.readbyqxmd.com/read/28388591/genetic-landscape-of-extreme-responders-with-anaplastic-oligodendroglioma
#8
Matthias Holdhoff, Gregory J Cairncross, Thomas M Kollmeyer, Ming Zhang, Peixin Zhang, Minesh P Mehta, Maria Werner-Wasik, Luis Souhami, Jean-Paul Bahary, Young Kwok, Alan C Hartford, Arnab Chakravarti, Srinivasan Yegnasubramanian, Bert Vogelstein, Nickolas Papadopoulos, Kenneth Kinzler, Robert B Jenkins, Chetan Bettegowda
BACKGROUND: The NRG Oncology RTOG 9402 trial showed significant survival benefit in patients with 1p/19q co-deleted anaplastic oligodendrogliomas (AO) who received both radiation (RT) and chemotherapy (PCV regimen) versus RT alone. Substantial separation of the survival curves was only seen after 7.3 years. We aimed to determine whether there are specific genetic alterations that distinguish co-deleted AO patients who benefit from the addition of PCV from those who do not. METHODS: We performed whole exome sequencing on matched tumor and normal DNA from all available short-term (STS) and long-term survivors (LTS) who received RT+PCV...
March 31, 2017: Oncotarget
https://www.readbyqxmd.com/read/28377141/patterns-of-lymph-node-positivity-on-11-c-acetate-pet-imaging-in-correlation-to-the-rtog-pelvic-radiation-field-for-prostate-cancer
#9
Chris McClinton, Maryam Niroumand, Sumit Sood, Veer Shah, Jacqueline Hill, Reginald W Dusing, Xinglei Shen
PURPOSE: (11)C-acetate positron emission tomography (PET) imaging allows for the detection of occult metastatic disease that may otherwise go undetected with standard imaging for prostate cancer (PCa). The aim of this study was to evaluate lymph node coverage of the standard Radiation Therapy Oncology Group (RTOG) whole pelvic radiation therapy (WPRT) field in patients found to have node-positive PCa determined by (11)C-acetate PET imaging. METHODS AND MATERIALS: A retrospective analysis was conducted on 125 PCa patients who underwent (11)C-acetate PET scans at our institution between 2007 and 2014...
March 6, 2017: Practical Radiation Oncology
https://www.readbyqxmd.com/read/28374321/reduced-late-urinary-toxicity-with-high-dose-intensity-modulated-radiotherapy-using-intra-prostate-fiducial-markers-for-localized-prostate-cancer
#10
A Zapatero, M Roch, D Büchser, P Castro, L Fernández-Banda, G Pozo, O Liñán, C Martin de Vidales, A Cruz-Conde, F García-Vicente
BACKGROUND/PURPOSE: To evaluate the impact of intensity-modulated radiotherapy (IMRT) with intra-prostate fiducial markers image-guided radiotherapy (IGRT) on the incidence of late urinary toxicity compared to 3D conformal radiotherapy (3DCRT) for patients with prostate cancer (PC). METHODS AND MATERIALS: We selected 733 consecutive patients with localized PC treated with dose-escalation radiotherapy between 2001 and 2014. Eligibility criteria were radiation dose >72...
April 3, 2017: Clinical & Translational Oncology
https://www.readbyqxmd.com/read/28371907/is-more-better-the-impact-of-extended-adjuvant-temozolomide-in-newly-diagnosed-glioblastoma-a-secondary-analysis-of-eortc-and-nrg-oncology-rtog
#11
Deborah T Blumenthal, Thierry Gorlia, Mark R Gilbert, Michelle M Kim, L Burt Nabors, Warren P Mason, Monika E Hegi, Peixin Zhang, Vassilis Golfinopoulos, James R Perry, Do Hyun Nam, Sara C Erridge, Benjamin W Corn, René O Mirimanoff, Paul D Brown, Brigitta G Baumert, Minesh P Mehta, Martin J van den Bent, David A Reardon, Michael Weller, Roger Stupp
Background: Radiation with concurrent and adjuvant (6 cycles) temozolomide (TMZ) is the established standard of postsurgical care for newly diagnosed glioblastoma (GBM). This regimen has been adopted with variations, including extending TMZ beyond 6 cycles. The optimal duration of maintenance therapy remains controversial. Methods: We performed pooled analysis of individual patient data from 4 randomized trials for newly diagnosed GBM. All patients who were progression free 28 days after cycle 6 were included...
March 24, 2017: Neuro-oncology
https://www.readbyqxmd.com/read/28355688/-a-randomized-study-of-intensity-modulated-radiation-therapy-versus-three-dimensional-conformal-radiation-therapy-for-pelvic-radiation-in-patients-of-post-operative-treatment-with-gynecologic-malignant-tumor
#12
J Ni, Z M Yin, S H Yuan, N F Liu, L Li, X X Xu, H M Lou
Objective: To study the difference between intensity-modulated radiation therapy (IMRT) and three dimensional conformal radiation therapy (3D-CRT) for pelvic radiation of post-operative treatment with gynecologic malignant tumor. Methods: A prospective investigation study was conducted on 183 patients of post-operative patients with whole pelvic radiation therapy of cervical cancer or endometrial cancer in Zhejiang Cancer Hospital [IMRT group (n=85) and 3D-CRT group (n=98)] from Oct. 2015 to Oct. 2016. The two groups received same dose (45 Gy in 25 fractions)...
March 25, 2017: Zhonghua Fu Chan Ke za Zhi
https://www.readbyqxmd.com/read/28351562/prospective-evaluation-of-intensity-modulated-radiation-therapy-with-simultaneous-integrated-boost-imrt-sib-in-head-and-neck-squamous-cell-carcinoma-in-patients-not-suitable-for-chemo-radiotherapy
#13
Madhup Rastogi, Shantanu Sapru, Pooja Gupta, Ajeet Kumar Gandhi, Surendra P Mishra, Anoop K Srivastava, Rohini Khurana, Rahat Hadi, Kamal Sahni, Farzana S
BACKGROUND: With conformal radiotherapy techniques, acute and late toxicities can be reduced because of better dose conformity and reduced doses to normal tissue. With Intensity Modulated Radiation Therapy (IMRT) further dose escalation is possible and one of the methods is IMRT with simultaneous integrated boost (IMRT-SIB). AIM: To evaluate feasibility, toxicity patterns and loco-regional control rates of IMRT-SIB technique in head and neck cancer patients who are not suitable candidates for concurrent chemoradiation...
April 2017: Oral Oncology
https://www.readbyqxmd.com/read/28340219/reply-to-letter-on-results-of-nrg-oncology-rtog-9813
#14
Susan M Chang, Arnab Chakavarti, Erica H Bell
No abstract text is available yet for this article.
March 16, 2017: Neuro-oncology
https://www.readbyqxmd.com/read/28340188/commentary-on-phase-iii-randomized-study-of-radiation-and-temozolomide-versus-radiation-and-nitrosourea-therapy-for-anaplastic-astrocytoma-results-of-nrg-oncology-rtog-9813
#15
https://www.readbyqxmd.com/read/28333021/a-phase-1-2-trial-of-a-combination-of-paclitaxel-and-trastuzumab-with-daily-irradiation-or-paclitaxel-alone-with-daily-irradiation-after-transurethral-surgery-for-noncystectomy-candidates-with-muscle-invasive-bladder-cancer-trial-nrg-oncology-rtog-0524
#16
M Dror Michaelson, Chen Hu, Huong T Pham, Douglas M Dahl, Chin Lee-Wu, Gregory P Swanson, Jacqueline Vuky, R Jeffrey Lee, Luis Souhami, Brian Chang, Asha George, Howard Sandler, William Shipley
PURPOSE: Bladder preservation therapy is an effective treatment for muscle-invasive urothelial carcinoma (UC). In this study we treated noncystectomy candidates with daily radiation and weekly paclitaxel for 7 weeks. Patients whose tumors showed her2/neu overexpression were additionally treated with weekly trastuzumab. METHODS AND MATERIALS: Sixty-eight evaluable patients were treated with radiation therapy and either paclitaxel + trastuzumab (group 1) or paclitaxel alone (group 2)...
April 1, 2017: International Journal of Radiation Oncology, Biology, Physics
https://www.readbyqxmd.com/read/28327923/heart-dose-exposure-as-prognostic-marker-after-radiotherapy-for-resectable-stage-iiia-b-non-small-cell-lung-cancer-secondary-analysis-of-a-randomised-trial
#17
M Guberina, W Eberhardt, M Stuschke, T Gauler, F Heinzelmann, D Cheufou, M Kimmich, G Friedel, H Schmidberger, K Darwiche, V Jendrossek, M Schuler, G Stamatis, C Pöttgen
BACKGROUND: Heart exposure to ionizing irradiation can cause ischemic heart disease. The partial heart volume receiving ≥5 Gy (heartV5) was supposed to be an independent prognostic factor for survival after radiochemotherapy for locally advanced non-small cell lung cancer (NSCLC). But validation of the latter hypothesis is needed under the concurrent risks of lung cancer patients. PATIENTS AND METHODS: The ESPATUE phase III trial recruited patients with potentially operable IIIA(N2)/selected IIIB NSCLC between 01/2004 and 01/2013...
February 21, 2017: Annals of Oncology: Official Journal of the European Society for Medical Oncology
https://www.readbyqxmd.com/read/28323339/adjuvant-radiation-therapy-androgen-deprivation-and-docetaxel-for-high-risk-prostate-cancer-postprostatectomy-results-of-nrg-oncology-rtog-study-0621
#18
Mark D Hurwitz, Jonathan Harris, Oliver Sartor, Ying Xiao, Bobby Shayegan, Paul W Sperduto, Kasra R Badiozamani, Colleen A F Lawton, Eric M Horwitz, Jeff M Michalski, Kevin Roof, David C Beyer, Qiang Zhang, Howard M Sandler
BACKGROUND: Phase 3 trials have demonstrated a benefit from adjuvant radiation therapy (ART) for men who have adverse factors at radical prostatectomy (RP). However, some patients have a high risk of progression despite ART. The role of systemic therapy with ART in this high-risk group remains to be defined. METHODS: Patients who had either a post-RP prostate-specific antigen (PSA) nadir > 0.2 ng/mL and a Gleason score ≥7 or a PSA nadir ≤0.2 ng/mL, a Gleason score ≥8, and a pathologic tumor (pT) classification ≥ pT3 received 6 months of androgen-deprivation therapy (ADT) plus radiotherapy and 6 cycles of docetaxel...
March 21, 2017: Cancer
https://www.readbyqxmd.com/read/28297436/simultaneously-integrated-boost-sib-spares-oar-and-reduces-treatment-time-in-locally-advanced-cervical-cancer
#19
Christine H Feng, Yasmin Hasan, Malgorzata Kopec, Hania A Al-Hallaq
We performed a dosimetric comparison of sequential IMRT (sIMRT) and simultaneously integrated boost (SIB) IMRT to boost PET-avid lymph nodes while concurrently treating pelvic targets to determine the potential of SIB IMRT to reduce overall treatment duration in locally advanced cervical cancer. Ten patients receiving definitive radiation therapy were identified retrospectively. RTOG consensus guidelines were followed to delineate the clinical target volume and organs at risk (OAR), which were then expanded per IMRT consortium guidelines to yield the planning target volume (PTV)...
September 2016: Journal of Applied Clinical Medical Physics
https://www.readbyqxmd.com/read/28297346/initial-evaluation-of-automated-treatment-planning-software
#20
Dawn Gintz, Kujtim Latifi, Jimmy Caudell, Benjamin Nelms, Geoffrey Zhang, Eduardo Moros, Vladimir Feygelman
Even with advanced inverse-planning techniques, radiation treatment plan optimization remains a very time-consuming task with great output variability, which prompted the development of more automated approaches. One commercially available technique mimics the actions of experienced human operators to progressively guide the traditional optimization process with automatically created regions of interest and associated dose-volume objectives. We report on the initial evaluation of this algorithm on 10 challenging cases of locoreginally advanced head and neck cancer...
May 2016: Journal of Applied Clinical Medical Physics
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