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International Journal of Radiation Oncology, Biology, Physics

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https://www.readbyqxmd.com/read/28721913/clinical-utility-of-epstein-barr-virus-dna-testing-in-the-treatment-of-nasopharyngeal-carcinoma-patients
#1
REVIEW
Kelly Y Kim, Quynh-Thu Le, Sue S Yom, Raymond H W Ng, K C Allen Chan, Scott V Bratman, John J Welch, Rao L Divi, Raymond A Petryshyn, Barbara A Conley
Epstein-Barr virus (EBV) DNA analysis has been shown to be useful for early detection, prognostication, and monitoring of treatment response of nasopharyngeal carcinoma (NPC), and the recent literature provides growing evidence of the clinical utility of EBV DNA testing, particularly to inform treatment decisions for NPC patients. Despite the fact that NPC is a rare disease, the NRG Oncology cooperative group has successfully activated a phase 2/3 randomized clinical trial for NPC with international partners and in that process has discovered that the development of a harmonized EBV DNA test is absolutely critical for integration into clinical trials and for future deployment in clinical and central laboratories...
August 1, 2017: International Journal of Radiation Oncology, Biology, Physics
https://www.readbyqxmd.com/read/28721912/exosomes-and-exosomal-micrornas-in-prostate-cancer-radiation-therapy
#2
REVIEW
Bijaya Malla, Kathrin Zaugg, Erik Vassella, Daniel M Aebersold, Alan Dal Pra
Despite current risk stratification systems using traditional clinicopathologic factors, many localized and locally advanced prostate cancers fail radical treatment (ie, radical prostatectomy, radiation therapy with or without androgen deprivation therapy). Therefore, a pressing need exists for enhanced methods of disease stratification through novel prognostic and predictive tools that can reliably be applied in clinical practice. Exosomes are 50- to 150-nm small vesicles released by cancer cells that reflect the genetic and nongenetic materials of parent cancer cells...
August 1, 2017: International Journal of Radiation Oncology, Biology, Physics
https://www.readbyqxmd.com/read/28721911/a-clarion-call-for-large-scale-collaborative-studies-of-pediatric-proton-therapy
#3
EDITORIAL
Amy Berrington de Gonzalez, Bhadrasian Vikram, Jeffrey C Buchsbaum, Florent de Vathaire, Wolfgang Dörr, Daphne Hass-Kogan, Johannes A Langendijk, Anita Mahajan, Wayne Newhauser, Andrea Ottolenghi, Cecile Ronckers, Reinhard Schulte, Linda Walsh, Torunn I Yock, Ruth A Kleinerman
No abstract text is available yet for this article.
August 1, 2017: International Journal of Radiation Oncology, Biology, Physics
https://www.readbyqxmd.com/read/28721910/defining-and-shattering-the-glass-ceiling-in-radiation-oncology
#4
Miriam A Knoll
No abstract text is available yet for this article.
August 1, 2017: International Journal of Radiation Oncology, Biology, Physics
https://www.readbyqxmd.com/read/28721909/postmastectomy-conundrum
#5
LETTER
Janet K Horton
No abstract text is available yet for this article.
August 1, 2017: International Journal of Radiation Oncology, Biology, Physics
https://www.readbyqxmd.com/read/28721908/pmrt-please-mind-randomized-trials
#6
LETTER
Anthony C Wong, Steven J Chmura
No abstract text is available yet for this article.
August 1, 2017: International Journal of Radiation Oncology, Biology, Physics
https://www.readbyqxmd.com/read/28721907/breast-cancer-biology-or-stage
#7
EDITORIAL
Daphna Spiegel
No abstract text is available yet for this article.
August 1, 2017: International Journal of Radiation Oncology, Biology, Physics
https://www.readbyqxmd.com/read/28721906/immune-checkpoint-inhibition-in-cancers-that-affect-the-head-and-neck
#8
Janaki Parameswaran, Barbara Burtness
No abstract text is available yet for this article.
August 1, 2017: International Journal of Radiation Oncology, Biology, Physics
https://www.readbyqxmd.com/read/28721905/inter-and-intrafractional-variation-in-the-3-dimensional-positions-of-pancreatic-tumors-due-to-respiration-under-real-time-monitoring
#9
Mami Akimoto, Mitsuhiro Nakamura, Akira Nakamura, Nobutaka Mukumoto, Takashi Kishi, Yoko Goto, Takashi Mizowaki, Masahiro Hiraoka
PURPOSE: To quantify the 3-dimensional pancreatic tumor motion during the overall treatment course using real-time orthogonal kilovoltage X-ray imaging. METHODS AND MATERIALS: This study included 10 patients with pancreatic cancer who underwent 6-port static intensity modulated radiation therapy with real-time tumor tracking in 15 fractions, except for 1 patient (5 fractions). The tumor and abdominal wall positions were acquired simultaneously during the overall treatment course...
August 1, 2017: International Journal of Radiation Oncology, Biology, Physics
https://www.readbyqxmd.com/read/28721904/treatment-planning-system-calculation-errors-are-present-in-most-imaging-and-radiation-oncology-core-houston-phantom-failures
#10
James R Kerns, Francesco Stingo, David S Followill, Rebecca M Howell, Adam Melancon, Stephen F Kry
PURPOSE: The anthropomorphic phantom program at the Houston branch of the Imaging and Radiation Oncology Core (IROC-Houston) is an end-to-end test that can be used to determine whether an institution can accurately model, calculate, and deliver an intensity modulated radiation therapy dose distribution. Currently, institutions that do not meet IROC-Houston's criteria have no specific information with which to identify and correct problems. In the present study, an independent recalculation system was developed to identify treatment planning system (TPS) calculation errors...
August 1, 2017: International Journal of Radiation Oncology, Biology, Physics
https://www.readbyqxmd.com/read/28721903/clinical-advances-of-hypoxia-activated-prodrugs-in-combination-with-radiation-therapy
#11
REVIEW
Ishna N Mistry, Matthew Thomas, Ewen D D Calder, Stuart J Conway, Ester M Hammond
With the increasing incidence of cancer worldwide, the need for specific, effective therapies is ever more urgent. One example of targeted cancer therapeutics is hypoxia-activated prodrugs (HAPs), also known as bioreductive prodrugs. These prodrugs are inactive in cells with normal oxygen levels but in hypoxic cells (with low oxygen levels) undergo chemical reduction to the active compound. Hypoxia is a common feature of solid tumors and is associated with a more aggressive phenotype and resistance to all modes of therapy...
August 1, 2017: International Journal of Radiation Oncology, Biology, Physics
https://www.readbyqxmd.com/read/28721902/permeability-of-brain-tumor-vessels-induced-by-uniform-or-spatially-microfractionated-synchrotron-radiation-therapies
#12
Audrey Bouchet, Marine Potez, Nicolas Coquery, Claire Rome, Benjamin Lemasson, Elke Bräuer-Krisch, Chantal Rémy, Jean Laissue, Emmanuel L Barbier, Valentin Djonov, Raphael Serduc
PURPOSE: To compare the blood-brain barrier permeability changes induced by synchrotron microbeam radiation therapy (MRT, which relies on spatial fractionation of the incident x-ray beam into parallel micron-wide beams) with changes induced by a spatially uniform synchrotron x-ray radiation therapy. METHODS AND MATERIALS: Male rats bearing malignant intracranial F98 gliomas were randomized into 3 groups: untreated, exposed to MRT (peak and valley dose: 241 and 10...
August 1, 2017: International Journal of Radiation Oncology, Biology, Physics
https://www.readbyqxmd.com/read/28721901/psmb8-as-a-candidate-marker-of-responsiveness-to-preoperative-radiation-therapy-in-rectal-cancer-patients
#13
Ye Jin Ha, Ka Hee Tak, Chan Wook Kim, Seon Ae Roh, Eun Kyung Choi, Dong Hyung Cho, Jeong Hwan Kim, Seon Kyu Kim, Seon Young Kim, Yong Sung Kim, Jin Cheon Kim
PURPOSE: The ability to predict individual responsiveness to cancer therapy is urgently needed. This is particularly true for patients with locally advanced rectal cancer (LARC) because a large proportion are resistant to preoperative chemoradiation therapy (CRT). In this study, we sought to identify markers that could predict response by comparing the gene expression profiles of the tumors of patients who received preoperative CRT. METHODS AND MATERIALS: The basal gene expression profiles of tumors from 22 LARC patients who were responders (n=9) and nonresponders (n=13) to preoperative CRT were analyzed using RNA sequencing (RNA-Seq)...
August 1, 2017: International Journal of Radiation Oncology, Biology, Physics
https://www.readbyqxmd.com/read/28721900/triggering-the-abscopal-effect-is-the-quality-of-the-radiation-important
#14
Frederik J Vernimmen, Jill T Nicholson
No abstract text is available yet for this article.
August 1, 2017: International Journal of Radiation Oncology, Biology, Physics
https://www.readbyqxmd.com/read/28721899/gaps-in-radiation-therapy-awareness-results-from-an-educational-multi-institutional-survey-of-us-internal-medicine-residents
#15
Narek Shaverdian, Sun Mi Yoo, Ryan Cook, Eric M Chang, Naomi Jiang, Ye Yuan, Kiri Sandler, Michael Steinberg, Percy Lee
PURPOSE: Internists and primary care providers play a growing role in cancer care. We therefore evaluated the awareness of radiation therapy in general and specifically the clinical utility of stereotactic body radiation therapy (SBRT) for early-stage non-small cell lung cancer (NSCLC) among current US internal medicine residents. METHODS AND MATERIALS: A web-based institutional review board-approved multi-institutional survey was distributed to US internal medicine residency programs...
August 1, 2017: International Journal of Radiation Oncology, Biology, Physics
https://www.readbyqxmd.com/read/28721898/radiation-treatment-time-and-overall-survival-in-locally-advanced-non-small-cell-lung-cancer
#16
Matthew T McMillan, Eric Ojerholm, Vivek Verma, Kristin A Higgins, Sunil Singhal, Jarrod D Predina, Abigail T Berman, Surbhi Grover, Cliff G Robinson, Charles B Simone
PURPOSE: Prolonged radiation treatment (RT) time (RTT) has been associated with worse survival in several malignancies. The present study investigated whether delays during RT are associated with overall survival (OS) in non-small cell lung cancer (NSCLC). METHODS AND MATERIALS: The National Cancer Database was queried for patients with stage III NSCLC who had received definitive concurrent chemotherapy and fractionated RT to standard doses (59.4-70.0 Gy) and fractionation from 2004 to 2013...
August 1, 2017: International Journal of Radiation Oncology, Biology, Physics
https://www.readbyqxmd.com/read/28721897/adjuvant-chemoradiation-therapy-for-cervical-cancer-and-effect-of-timing-and-duration-on-treatment-outcome
#17
Sachin Jhawar, Lara Hathout, Mohamed A Elshaikh, Sushil Beriwal, William Small, Omar Mahmoud
PURPOSE: Worse treatment outcomes can be expected with prolongation of the overall treatment time (OTT) during definitive chemoradiation therapy (CRT) for cervical cancer. In the adjuvant setting, data on the relative importance of the OTT and the importance of RT and chemotherapy synchronization are scarce. Using the National Cancer Database, we evaluated the effect of these treatment variables on overall survival in the adjuvant CRT setting. METHODS AND MATERIALS: The present analysis included nonmetastatic cervical cancer patients undergoing hysterectomy followed by adjuvant CRT...
August 1, 2017: International Journal of Radiation Oncology, Biology, Physics
https://www.readbyqxmd.com/read/28721896/prognostic-importance-of-the-site-of-recurrence-in-patients-with-metastatic-recurrent-cervical-cancer
#18
Tae Hun Kim, Moon-Hong Kim, Beob-Jong Kim, Sang-Il Park, Sang-Young Ryu, Chul-Koo Cho
PURPOSE: The clinical characteristics and outcomes of patients with metastatic recurrent cervical cancer remain poorly understood. The goals of the present study were to investigate the survival outcomes according to the recurrence site in a large cohort of cervical cancer patients. METHODS AND MATERIALS: Of 1322 patients with primary cervical cancer from 2000 to 2013, 205 with recurrence after primary or adjuvant postoperative radiation were enrolled retrospectively...
August 1, 2017: International Journal of Radiation Oncology, Biology, Physics
https://www.readbyqxmd.com/read/28721895/late-cardiac-toxicity-after-mediastinal-radiation-therapy-for-hodgkin-lymphoma-contributions-of-coronary-artery-and-whole-heart-dose-volume-variables-to-risk-prediction
#19
Ezra Hahn, Haiyan Jiang, Angela Ng, Shaheena Bashir, Sameera Ahmed, Richard Tsang, Alexander Sun, Mary Gospodarowicz, David Hodgson
PURPOSE: Mediastinal radiation therapy (RT) for Hodgkin lymphoma (HL) is associated with late cardiotoxicity, but there are limited data to indicate which dosimetric parameters are most valuable for predicting this risk. This study investigated which whole heart dosimetric measurements provide the most information regarding late cardiotoxicity, and whether coronary artery dosimetry was more predictive of this outcome than whole heart dosimetry. METHODS AND MATERIALS: A random sample of 125 HL patients treated with mediastinal RT was selected, and 3-dimensional cardiac dose-volume data were generated from historical plans using validated methods...
August 1, 2017: International Journal of Radiation Oncology, Biology, Physics
https://www.readbyqxmd.com/read/28721894/predictors-of-positive-margins-after-definitive-resection-for-gastric-adenocarcinoma-and-impact-of-adjuvant-therapies
#20
Ryan M Rhome, Erin Moshier, Umut Sarpel, Nisha Ohri, Madhu Mazumdar, Michael H Buckstein
PURPOSE: Positive margins after definitive resection in gastric adenocarcinoma are associated with inferior outcomes. There are few randomized data to guide optimal adjuvant therapy after positive margins. METHODS: Using the National Cancer Database, we identified 24,619 nonmetastatic gastric adenocarcinoma patients who received diagnoses from 2004 to 2013 and underwent definitive resection to analyze for predictors of positive surgical margins. Of these patients, 2754 had positive margins (11...
August 1, 2017: International Journal of Radiation Oncology, Biology, Physics
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