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Winter SF, Gardner MM, Karschnia P, Vaios EJ, Grassberger C, Bussière MR, Nikolic K, Pongpitakmetha T, Ehret F, Kaul D, Boehmerle W, Endres M, Shih HA, Parsons MW, Dietrich J. Unique brain injury patterns after proton vs photon radiotherapy for WHO grade 2-3 gliomas. Oncologist 2024:oyae195. [PMID: 39126664 DOI: 10.1093/oncolo/oyae195] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2024] [Accepted: 06/26/2024] [Indexed: 08/12/2024] Open
Abstract
BACKGROUND Central nervous system (CNS) injury following brain-directed radiotherapy remains a major challenge. Proton radiotherapy (PRT) minimizes radiation to healthy brain, potentially limiting sequelae. We characterized CNS radiotoxicity, including radiation-induced leukoencephalopathy (RIL), brain tissue necrosis (TN), and cerebral microbleeds (CMB), in glioma patients treated with PRT or photons (XRT). PATIENTS AND METHODS Thirty-four patients (19 male; median age 39.6 years) with WHO grade 2-3 gliomas treated with partial cranial radiotherapy (XRT [n = 17] vs PRT[n = 17]) were identified and matched by demographic/clinical criteria. Radiotoxicity was assessed longitudinally for 3 years post-radiotherapy via serial analysis of T2/FLAIR- (for RIL), contrast-enhanced T1- (for TN), and susceptibility (for CMB)-weighted MRI sequences. RIL was rated at whole-brain and hemispheric levels using a novel Fazekas scale-informed scoring system. RESULTS The scoring system proved reliable (ICC > 0.85). Both groups developed moderate-to-severe RIL (62%[XRT]; 71%[PRT]) within 3 years; however, XRT was associated with persistent RIL increases in the contralesional hemisphere, whereas contralesional hemispheric RIL plateaued with PRT at 1-year post-radiotherapy (t = 2.180; P = .037). TN rates were greater with PRT (6%[XRT] vs 18%[PRT]; P = ns). CMB prevalence (76%[XRT]; 71%[PRT]) and burden (mean #CMB: 4.0[XRT]; 4.2[PRT]) were similar; however, XRT correlated with greater contralesional hemispheric CMB burden (27%[XRT]; 17%[PRT]; X2 = 4.986; P = .026), whereas PRT-specific CMB clustered at the radiation field margin (X2 = 14.7; P = .002). CONCLUSIONS CNS radiotoxicity is common and progressive in glioma patients. Injury patterns suggest radiation modality-specificity as RIL, TN, and CMB exhibit unique spatiotemporal differences following XRT vs PRT, likely reflecting underlying dosimetric and radiobiological differences. Familiarity with such injury patterns is essential to improve patient management. Prospective studies are needed to validate these findings and assess their impacts on neurocognitive function.
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Affiliation(s)
- Sebastian F Winter
- Division of Neuro-Oncology, Mass General Cancer Center, Massachusetts General Hospital and Harvard Medical School, Boston, MA 02114, United States
- Department of Neurology with Experimental Neurology, Charité - Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin and Humboldt-Universität zu Berlin, 10117 Berlin, Germany
- Berlin Institute of Health at Charité - Universitätsmedizin Berlin, BIH Biomedical Innovation Academy, BIH Charité Junior Clinician Scientist Program, 10117 Berlin, Germany
| | - Melissa M Gardner
- Division of Neuro-Oncology, Mass General Cancer Center, Massachusetts General Hospital and Harvard Medical School, Boston, MA 02114, United States
- Department of Psychiatry, Psychology Assessment Center, Massachusetts General Hospital and Harvard Medical School, Boston, MA 02114, United States
| | - Philipp Karschnia
- Division of Neuro-Oncology, Mass General Cancer Center, Massachusetts General Hospital and Harvard Medical School, Boston, MA 02114, United States
- Department of Neurosurgery, Ludwig-Maximilians-University Munich, 81377 Munich, Germany
| | - Eugene J Vaios
- Department of Radiation Oncology, Duke Cancer Institute, Durham, NC 27710, United States
| | - Clemens Grassberger
- Department of Radiation Oncology, Massachusetts General Hospital and Harvard Medical School, Boston, MA 02114, United States
| | - Marc R Bussière
- Department of Radiation Oncology, Massachusetts General Hospital and Harvard Medical School, Boston, MA 02114, United States
| | - Katarina Nikolic
- Department of Neurology, Universitätsklinikum St. Pölten, 3100 Sankt Pölten, Austria
| | - Thanakit Pongpitakmetha
- Department of Pharmacology, Faculty of Medicine, Chulalongkorn University, 10330 Bangkok, Thailand
- Chula Neuroscience Center, King Chulalongkorn Memorial Hospital, The Thai Red Cross Society, 10330 Bangkok, Thailand
| | - Felix Ehret
- Department of Radiation Oncology, Massachusetts General Hospital and Harvard Medical School, Boston, MA 02114, United States
- Charité - Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Department of Radiation Oncology, 13353 Berlin, Germany
- German Cancer Consortium (DKTK), Partner Site Berlin, a partnership between DKFZ and Charité - Universitätsmedizin Berlin, 10117 Berlin, Germany
| | - David Kaul
- Charité - Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Department of Radiation Oncology, 13353 Berlin, Germany
- German Cancer Consortium (DKTK), Partner Site Berlin, a partnership between DKFZ and Charité - Universitätsmedizin Berlin, 10117 Berlin, Germany
| | - Wolfgang Boehmerle
- Department of Neurology with Experimental Neurology, Charité - Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin and Humboldt-Universität zu Berlin, 10117 Berlin, Germany
| | - Matthias Endres
- Department of Neurology with Experimental Neurology, Charité - Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin and Humboldt-Universität zu Berlin, 10117 Berlin, Germany
- Center for Stroke Research Berlin, 10117 Berlin, Germany
- ExcellenceCluster NeuroCure, 10117 Berlin, Germany
- German Center for Neurodegenerative Diseases (DZNE), Partner Site Berlin, 10117 Berlin, Germany
- German Centre for Cardiovascular Research (DZHK), Partner Site Berlin, 10117 Berlin, Germany
- German Centre for Mental Health (DZPH), Partner Site Berlin, 10117 Berlin, Germany
| | - Helen A Shih
- Division of Neuro-Oncology, Mass General Cancer Center, Massachusetts General Hospital and Harvard Medical School, Boston, MA 02114, United States
- Department of Radiation Oncology, Massachusetts General Hospital and Harvard Medical School, Boston, MA 02114, United States
| | - Michael W Parsons
- Division of Neuro-Oncology, Mass General Cancer Center, Massachusetts General Hospital and Harvard Medical School, Boston, MA 02114, United States
- Department of Psychiatry, Psychology Assessment Center, Massachusetts General Hospital and Harvard Medical School, Boston, MA 02114, United States
| | - Jorg Dietrich
- Division of Neuro-Oncology, Mass General Cancer Center, Massachusetts General Hospital and Harvard Medical School, Boston, MA 02114, United States
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Winter SF, Vaios EJ, Shih HA, Grassberger C, Parsons MW, Gardner MM, Ehret F, Kaul D, Boehmerle W, Endres M, Dietrich J. Mitigating Radiotoxicity in the Central Nervous System: Role of Proton Therapy. Curr Treat Options Oncol 2023; 24:1524-1549. [PMID: 37728819 DOI: 10.1007/s11864-023-01131-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 08/08/2023] [Indexed: 09/21/2023]
Abstract
OPINION STATEMENT Central nervous system (CNS) radiotoxicity remains a challenge in neuro-oncology. Dose distribution advantages of protons over photons have prompted increased use of brain-directed proton therapy. While well-recognized among pediatric populations, the benefit of proton therapy among adults with CNS malignancies remains controversial. We herein discuss the role of protons in mitigating late CNS radiotoxicities in adult patients. Despite limited clinical trials, evidence suggests toxicity profile advantages of protons over conventional radiotherapy, including retention of neurocognitive function and brain volume. Modelling studies predict superior dose conformality of protons versus state-of-the-art photon techniques reduces late radiogenic vasculopathies, endocrinopathies, and malignancies. Conversely, potentially higher brain tissue necrosis rates following proton therapy highlight a need to resolve uncertainties surrounding the impact of variable biological effectiveness of protons on dose distribution. Clinical trials comparing best photon and particle-based therapy are underway to establish whether protons substantially improve long-term treatment-related outcomes in adults with CNS malignancies.
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Affiliation(s)
- Sebastian F Winter
- Department of Neurology and MGH Cancer Center, Massachusetts General Hospital and Harvard Medical School, Boston, MA, USA.
- Department of Neurology and Experimental Neurology, Charité - Universitätsmedizin Berlin, corporate member of Freie Universität Berlin and Humboldt-Universität zu Berlin, 10117, Berlin, Germany.
- Berlin Institute of Health at Charité - Universitätsmedizin Berlin, BIH Biomedical Innovation Academy, BIH Charité Junior Clinician Scientist Program, 10117, Berlin, Germany.
| | - Eugene J Vaios
- Department of Radiation Oncology, Duke University Medical Center, Durham, NC, USA
| | - Helen A Shih
- Department of Radiation Oncology, Massachusetts General Hospital and Harvard Medical School, Boston, MA, USA
| | - Clemens Grassberger
- Department of Radiation Oncology, Massachusetts General Hospital and Harvard Medical School, Boston, MA, USA
| | - Michael W Parsons
- Department of Psychiatry, Psychology Assessment Center, Massachusetts General Hospital and Harvard Medical School, Boston, MA, USA
| | - Melissa M Gardner
- Department of Psychiatry, Psychology Assessment Center, Massachusetts General Hospital and Harvard Medical School, Boston, MA, USA
| | - Felix Ehret
- Berlin Institute of Health at Charité - Universitätsmedizin Berlin, BIH Biomedical Innovation Academy, BIH Charité Junior Clinician Scientist Program, 10117, Berlin, Germany
- Department of Radiation Oncology, Charité - Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin and Humboldt-Universität zu Berlin, 13353, Berlin, Germany
- Charité - Universitätsmedizin Berlin, Berlin, Germany; German Cancer Consortium (DKTK), partner site Berlin, and German Cancer Research Center (DKFZ), Heidelberg, Germany
| | - David Kaul
- Department of Radiation Oncology, Charité - Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin and Humboldt-Universität zu Berlin, 13353, Berlin, Germany
- Charité - Universitätsmedizin Berlin, Berlin, Germany; German Cancer Consortium (DKTK), partner site Berlin, and German Cancer Research Center (DKFZ), Heidelberg, Germany
| | - Wolfgang Boehmerle
- Department of Neurology and Experimental Neurology, Charité - Universitätsmedizin Berlin, corporate member of Freie Universität Berlin and Humboldt-Universität zu Berlin, 10117, Berlin, Germany
| | - Matthias Endres
- Department of Neurology and Experimental Neurology, Charité - Universitätsmedizin Berlin, corporate member of Freie Universität Berlin and Humboldt-Universität zu Berlin, 10117, Berlin, Germany
- Center for Stroke Research Berlin, Berlin, Germany
- ExcellenceCluster NeuroCure, Berlin, Germany
- German Center for Neurodegenerative Diseases (DZNE), partner site Berlin, Berlin, Germany
- German Centre for Cardiovascular Research (DZHK), partner site Berlin, Berlin, Germany
| | - Jorg Dietrich
- Department of Neurology and MGH Cancer Center, Massachusetts General Hospital and Harvard Medical School, Boston, MA, USA
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Liu R, Luo H, Zhang Q, Sun S, Liu Z, Wang X, Geng Y, Zhao X. Bevacizumab is an effective treatment for symptomatic cerebral necrosis after carbon ion therapy for recurrent intracranial malignant tumours: A case report. Mol Clin Oncol 2022; 17:114. [PMID: 35747599 PMCID: PMC9204208 DOI: 10.3892/mco.2022.2547] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2022] [Accepted: 04/05/2022] [Indexed: 11/18/2022] Open
Abstract
Carbon ion therapy (CIT) is a form of particle therapy, which not only spares normal tissues but may also improve local control of recurrent intracranial tumours. Cerebral radiation necrosis (RN) is one of the most serious adverse reactions of recurrent brain tumours following reirradiation, which may lead to neurological decline or even death. Bevacizumab is an anti-vascular endothelial growth factor antibody, which has been used to treat symptomatic RN. However, studies on bevacizumab for the treatment of CIT-induced RN are sparse. The present study described two cases that were successfully treated with bevacizumab for symptomatic RN following CIT for recurrent intracranial malignant tumours. The two recurrent intracranial malignant tumours, a chondrosarcoma in the right cavernous sinus and an anaplastic meningioma in the right frontal lobe, were enrolled in a clinical trial of CIT. Both cases were treated intravenously with bevacizumab when deterioration that appeared to be symptomatic brain RN was observed. Just before CIT, enhanced magnetic resonance imaging (MRI) was performed in each case to confirm tumour recurrence. Both cases exhibited a deterioration in symptoms, as well as on MRI, at 12-month intervals following CIT. The first case underwent positron emission tomography/computed tomography to confirm no increase in fluorodeoxyglucose uptake in lesion areas. Both cases were diagnosed as having symptomatic brain RN and began intravenous administration of four cycles of 5 mg/kg bevacizumab biweekly. The patients responded well, with rapid and marked improvements on MRI, and in clinical symptoms. No tumour progression was observed 24 months after CIT. In conclusion, bevacizumab was revealed to exert marked effects on symptomatic brain RN following CIT. Notably, cycles of bevacizumab should be administered specifically based on the aim of treating brain necrosis, and long-term or prophylactic applications are not recommended.
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Affiliation(s)
- Ruifeng Liu
- Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou, Gansu 730000, P.R. China
- Graduate School, University of Chinese Academy of Sciences, Beijing 100190, P.R. China
- Heavy Ion Therapy Center, Lanzhou Heavy Ion Hospital, Lanzhou, Gansu 730000, P.R. China
| | - Hongtao Luo
- Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou, Gansu 730000, P.R. China
- Graduate School, University of Chinese Academy of Sciences, Beijing 100190, P.R. China
- Heavy Ion Therapy Center, Lanzhou Heavy Ion Hospital, Lanzhou, Gansu 730000, P.R. China
| | - Qiuning Zhang
- Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou, Gansu 730000, P.R. China
- Graduate School, University of Chinese Academy of Sciences, Beijing 100190, P.R. China
- Heavy Ion Therapy Center, Lanzhou Heavy Ion Hospital, Lanzhou, Gansu 730000, P.R. China
| | - Shilong Sun
- Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou, Gansu 730000, P.R. China
- Graduate School, University of Chinese Academy of Sciences, Beijing 100190, P.R. China
- Heavy Ion Therapy Center, Lanzhou Heavy Ion Hospital, Lanzhou, Gansu 730000, P.R. China
| | - Zhiqiang Liu
- Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou, Gansu 730000, P.R. China
- Graduate School, University of Chinese Academy of Sciences, Beijing 100190, P.R. China
- Heavy Ion Therapy Center, Lanzhou Heavy Ion Hospital, Lanzhou, Gansu 730000, P.R. China
| | - Xiaohu Wang
- Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou, Gansu 730000, P.R. China
- Graduate School, University of Chinese Academy of Sciences, Beijing 100190, P.R. China
- Heavy Ion Therapy Center, Lanzhou Heavy Ion Hospital, Lanzhou, Gansu 730000, P.R. China
| | - Yichao Geng
- The First School of Clinical Medicine, Lanzhou University, Lanzhou, Gansu 730000, P.R. China
| | - Xueshan Zhao
- The First School of Clinical Medicine, Lanzhou University, Lanzhou, Gansu 730000, P.R. China
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Smith JD, Mandel G, Niazi T, Bradley JA, Indelicato DJ, Khatib Z. Multifocal and Multiphasic Demyelinating Lesions After Radiation for Ependymoma in a Pediatric Population. J Child Neurol 2022; 37:609-616. [PMID: 35619552 DOI: 10.1177/08830738221079476] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
Radiation treatment is widely used to address unresectable intracranial tumors. Owing to the nature of therapy, healthy tissue and diseased regions will be affected. New insights have shown that not only does this impact brain parenchyma but it causes changes in fluid status, myelination, and the integrity of the blood-brain barrier. This alters how peripheral and central immune systems interact, perpetuating neuroinflammation. Rare case reports in the adult literature have described multifocal, multiphasic demyelinating lesions after radiation. Here we describe 2 pediatric cases of relapsing demyelination after and in conjunction with radiation therapy for ependymoma, consistent with a multiple sclerosis phenotype. Insights into the underpinnings of multiple sclerosis show peripheral inflammation, blood-brain barrier disruption, and antigenic mimicry stimulating neuroinflammation. Here we investigate the role that radiation, tumor burden, and systemic inflammation may play in creating demyelinating disorders. We strive to elucidate common pathophysiology between radiation-induced brain injury and multiple sclerosis.
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Affiliation(s)
- Jacklyn D Smith
- Department of Pediatrics, 5447Nicklaus Children's Hospital, Miami, FL, USA
| | - Gabriel Mandel
- Department of Pediatrics, 5447Nicklaus Children's Hospital, Miami, FL, USA
| | - Toba Niazi
- Division of Neurosurgery, 5447Nicklaus Children's Hospital, Miami, FL, USA
| | - Julie A Bradley
- Department of Radiation Oncology, 50551University of Florida, Jacksonville, FL, USA
| | - Daniel J Indelicato
- Department of Radiation Oncology, 50551University of Florida, Jacksonville, FL, USA
| | - Ziad Khatib
- Department of Pediatrics, 5447Nicklaus Children's Hospital, Miami, FL, USA.,Division of Hematology-Oncology, 5447Nicklaus Children's Hospital, Miami, FL, USA
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Raghavapudi H, Singroul P, Kohila V. Brain Tumor Causes, Symptoms, Diagnosis and Radiotherapy Treatment. Curr Med Imaging 2021; 17:931-942. [PMID: 33573575 DOI: 10.2174/1573405617666210126160206] [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: 08/24/2020] [Revised: 12/15/2020] [Accepted: 12/17/2020] [Indexed: 11/22/2022]
Abstract
The strategy used for the treatment of given brain cancer is critical in determining the post effects and survival. An oncological diagnosis of tumor evaluates a range of parameters such as shape, size, volume, location and neurological complexity that define the symptomatic severity. The evaluation determines a suitable treatment approach chosen from a range of options such as surgery, chemotherapy, hormone therapy, radiation therapy and other targeted therapies. Often, a combination of such therapies is applied to achieve superior results. Radiotherapy serves as a better treatment strategy because of a higher survival rate. It offers the flexibility of synergy with other treatment strategies and fewer side effects on organs at risk. This review presents a radiobiological perspective in the treatment of brain tumor. The cause, symptoms, diagnosis, treatment, post-treatment effects and the framework involved in its elimination are summarized.
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Affiliation(s)
- Haarika Raghavapudi
- Department of Biotechnology, National Institute of Technology Warangal, Warangal -506004, Telangana, India
| | - Pankaj Singroul
- Department of Biotechnology, National Institute of Technology Warangal, Warangal -506004, Telangana, India
| | - V Kohila
- Department of Biotechnology, National Institute of Technology Warangal, Warangal -506004, Telangana, India
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Tinganelli W, Luoni F, Durante M. What can space radiation protection learn from radiation oncology? LIFE SCIENCES IN SPACE RESEARCH 2021; 30:82-95. [PMID: 34281668 DOI: 10.1016/j.lssr.2021.06.002] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/19/2021] [Revised: 06/15/2021] [Accepted: 06/17/2021] [Indexed: 06/13/2023]
Abstract
Protection from cosmic radiation of crews of long-term space missions is now becoming an urgent requirement to allow a safe colonization of the moon and Mars. Epidemiology provides little help to quantify the risk, because the astronaut group is small and as yet mostly involved in low-Earth orbit mission, whilst the usual cohorts used for radiation protection on Earth (e.g. atomic bomb survivors) were exposed to a radiation quality substantially different from the energetic charged particle field found in space. However, there are over 260,000 patients treated with accelerated protons or heavier ions for different types of cancer, and this cohort may be useful for quantifying the effects of space-like radiation in humans. Space radiation protection and particle therapy research also share the same tools and devices, such as accelerators and detectors, as well as several research topics, from nuclear fragmentation cross sections to the radiobiology of densely ionizing radiation. The transfer of the information from the cancer radiotherapy field to space is manifestly complicated, yet the two field should strengthen their relationship and exchange methods and data.
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Affiliation(s)
- Walter Tinganelli
- GSI Helmholtzzentrum für Schwerionenforschung, Biophysics Department, Darmstadt, Germany
| | - Francesca Luoni
- GSI Helmholtzzentrum für Schwerionenforschung, Biophysics Department, Darmstadt, Germany; Technische Universität Darmstadt, Institut für Physik Kondensierter Materie, Darmstadt, Germany
| | - Marco Durante
- GSI Helmholtzzentrum für Schwerionenforschung, Biophysics Department, Darmstadt, Germany; Technische Universität Darmstadt, Institut für Physik Kondensierter Materie, Darmstadt, Germany.
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7
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Missiaggia M, Cartechini G, Scifoni E, Rovituso M, Tommasino F, Verroi E, Durante M, La Tessa C. Microdosimetric measurements as a tool to assess potential in-field and out-of-field toxicity regions in proton therapy. Phys Med Biol 2020; 65:245024. [PMID: 32554886 DOI: 10.1088/1361-6560/ab9e56] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Relative biological effectiveness (RBE) variations are thought to be one of the primary causes of unexpected normal-tissue toxicities during tumor treatments with charged particles. Unlike carbon therapy, where treatment planning is optimized on the basis of the RBE-weighted dose, a constant RBE value of 1.1 is currently used in proton therapy. Assuming a uniform value can lead to under- or over-dosage, not just to the tumor but also to surrounding normal tissue. RBE changes have been linked with dose/fraction, the biological endpoint and beam properties. Understanding radiation quality and the associated RBE can improve the prediction of normal-tissue toxicities. In this study, we exploited microdosimetry for characterizing radiation quality in proton therapy in-field, and off-beam at 20 (beam edge), 50 (close out-of-field) and 100 (far out-of-field) mm from the beam center. We measured the lineal energy y spectra in a water phantom irradiated with 152 MeV protons, from which beam quality as well as the physical dose could be obtained. Taking advantage of the linear quadratic model and a modified version of the microdosimetric kinetic model, the microdosimetric data were combined with radiobiological parameters (α and β) of human salivary gland tumor cells for assessing cell survival RBE and RBE-weighted dose. The results indicate that if a dose of 60 Gy is delivered to the peak, the beam edge receives up to 6 Gy while the close and far out-of-field regions receive doses on the order of 10-3 Gy and 10-4 Gy, respectively. The RBE estimate in-beam shows large variations, ranging from 1.0 ± 0.2 at the entrance channel to 2.51 ± 0.15 at the tail. The beam edge follows a similar trend but the RBE calculated at the Bragg peak depth is 2.27 ± 0.17, i.e. twice the RBE in-beam (1.05 ± 0.15). Out-of-field, the estimated RBE is always significantly higher than 1.1 and increases with increasing lateral distance, reaching the overall highest value of 3.4 ± 0.3 at a depth of 206 mm and a lateral distance of 10 mm. The combination of RBE and dose into the biological dose points to the beam edge and the end-of-range in-beam as the areas with the highest risk of potential toxicities.
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Affiliation(s)
- M Missiaggia
- University of Trento, Via Sommarive 14, 38123 Trento, Italy. Trento Institute of Fundamental Physics and Applications (TIFPA), Via Sommarive 14, 38123 Trento, Italy
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Kitpanit S, Lee A, Pitter KL, Fan D, Chow JC, Neal B, Han Z, Fox P, Sine K, Mah D, Dunn LA, Sherman EJ, Michel L, Ganly I, Wong RJ, Boyle JO, Cohen MA, Singh B, Brennan CW, Gavrilovic IT, Hatzoglou V, O'Malley B, Zakeri K, Yu Y, Chen L, Gelblum DY, Kang JJ, McBride SM, Tsai CJ, Riaz N, Lee NY. Temporal Lobe Necrosis in Head and Neck Cancer Patients after Proton Therapy to the Skull Base. Int J Part Ther 2020; 6:17-28. [PMID: 32582816 PMCID: PMC7302730 DOI: 10.14338/ijpt-20-00014.1] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2020] [Accepted: 04/07/2020] [Indexed: 12/20/2022] Open
Abstract
PURPOSE To demonstrate temporal lobe necrosis (TLN) rate and clinical/dose-volume factors associated with TLN in radiation-naïve patients with head and neck cancer treated with proton therapy where the field of radiation involved the skull base. MATERIALS AND METHODS Medical records and dosimetric data for radiation-naïve patients with head and neck cancer receiving proton therapy to the skull base were retrospectively reviewed. Patients with <3 months of follow-up, receiving <45 GyRBE or nonconventional fractionation, and/or no follow-up magnetic resonance imaging (MRI) were excluded. TLN was determined using MRI and graded using Common Terminology Criteria for Adverse Events (CTCAE) v5.0. Clinical (gender, age, comorbidities, concurrent chemotherapy, smoking, radiation techniques) and dose-volume parameters were analyzed for TLN correlation. The receiver operating characteristic curve and area under the curve (AUC) were performed to determine the cutoff points of significant dose-volume parameters. RESULTS Between 2013 and 2019, 234 patients were included. The median follow-up time was 22.5 months (range = 3.2-69.3). Overall TLN rates of any grade, ≥ grade 2, and ≥ grade 3 were 5.6% (N = 13), 2.1%, and 0.9%, respectively. The estimated 2-year TLN rate was 4.6%, and the 2-year rate of any brain necrosis was 6.8%. The median time to TLN was 20.9 months from proton completion. Absolute volume receiving 40, 50, 60, and 70 GyRBE (absolute volume [aV]); mean and maximum dose received by the temporal lobe; and dose to the 0.5, 1, and 2 cm3 volume receiving the maximum dose (D0.5cm3, D1cm3, and D2cm3, respectively) of the temporal lobe were associated with greater TLN risk while clinical parameters showed no correlation. Among volume parameters, aV50 gave maximum AUC (0.921), and D2cm3 gave the highest AUC (0.935) among dose parameters. The 11-cm3 cutoff value for aV50 and 62 GyRBE for D2cm3 showed maximum specificity and sensitivity. CONCLUSION The estimated 2-year TLN rate was 4.6% with a low rate of toxicities ≥grade 3; aV50 ≤11 cm3, D2cm3 ≤62 GyRBE and other cutoff values are suggested as constraints in proton therapy planning to minimize the risk of any grade TLN. Patients whose temporal lobe(s) unavoidably receive higher doses than these thresholds should be carefully followed with MRI after proton therapy.
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Affiliation(s)
- Sarin Kitpanit
- Department of Radiation Oncology, Memorial Sloan Kettering Cancer Center, New York, NY, USA
- Division of Radiation Oncology, Department of Radiology, Faculty of Medicine, Chulalongkorn University, King Chulalongkorn Memorial Hospital, Thai Red Cross Society, Bangkok, Thailand
| | - Anna Lee
- Department of Radiation Oncology, Memorial Sloan Kettering Cancer Center, New York, NY, USA
| | - Ken L. Pitter
- Department of Radiation Oncology, Memorial Sloan Kettering Cancer Center, New York, NY, USA
| | - Dan Fan
- Department of Radiation Oncology, Memorial Sloan Kettering Cancer Center, New York, NY, USA
- Department of Radiation Oncology, Xiangya Hospital, Central South University, Changsha, Hunan, China
| | - James C.H. Chow
- Department of Clinical Oncology, Queen Elizabeth Hospital, Hong Kong, China
| | - Brian Neal
- ProCure Proton Therapy Center, Somerset, NJ, USA
| | - Zhiqiang Han
- ProCure Proton Therapy Center, Somerset, NJ, USA
| | - Pamela Fox
- ProCure Proton Therapy Center, Somerset, NJ, USA
| | - Kevin Sine
- ProCure Proton Therapy Center, Somerset, NJ, USA
| | - Dennis Mah
- ProCure Proton Therapy Center, Somerset, NJ, USA
| | - Lara A. Dunn
- Department of Medicine, Memorial Sloan Kettering Cancer Center, New York, NY, USA
| | - Eric J. Sherman
- Department of Medicine, Memorial Sloan Kettering Cancer Center, New York, NY, USA
| | - Loren Michel
- Department of Medicine, Memorial Sloan Kettering Cancer Center, New York, NY, USA
| | - Ian Ganly
- Department of Surgery, Memorial Sloan Kettering Cancer Center, New York, NY, USA
| | - Richard J. Wong
- Department of Surgery, Memorial Sloan Kettering Cancer Center, New York, NY, USA
| | - Jay O. Boyle
- Department of Surgery, Memorial Sloan Kettering Cancer Center, New York, NY, USA
| | - Marc A. Cohen
- Department of Surgery, Memorial Sloan Kettering Cancer Center, New York, NY, USA
| | - Bhuvanesh Singh
- Department of Surgery, Memorial Sloan Kettering Cancer Center, New York, NY, USA
| | - Cameron W. Brennan
- Department of Neurosurgery, Memorial Sloan Kettering Cancer Center, New York, NY, USA
| | - Igor T. Gavrilovic
- Department of Neurology, Memorial Sloan Kettering Cancer Center, New York, NY, USA
| | - Vaios Hatzoglou
- Department of Radiology, Memorial Sloan Kettering Cancer Center, New York, NY, USA
| | - Bernard O'Malley
- Department of Radiology, Memorial Sloan Kettering Cancer Center, New York, NY, USA
| | - Kaveh Zakeri
- Department of Radiation Oncology, Memorial Sloan Kettering Cancer Center, New York, NY, USA
- Division of Radiation Oncology, Department of Radiology, Faculty of Medicine, Chulalongkorn University, King Chulalongkorn Memorial Hospital, Thai Red Cross Society, Bangkok, Thailand
- Department of Radiation Oncology, Xiangya Hospital, Central South University, Changsha, Hunan, China
- Department of Clinical Oncology, Queen Elizabeth Hospital, Hong Kong, China
- ProCure Proton Therapy Center, Somerset, NJ, USA
- Department of Medicine, Memorial Sloan Kettering Cancer Center, New York, NY, USA
- Department of Surgery, Memorial Sloan Kettering Cancer Center, New York, NY, USA
- Department of Neurosurgery, Memorial Sloan Kettering Cancer Center, New York, NY, USA
- Department of Neurology, Memorial Sloan Kettering Cancer Center, New York, NY, USA
- Department of Radiology, Memorial Sloan Kettering Cancer Center, New York, NY, USA
| | - Yao Yu
- Department of Radiation Oncology, Memorial Sloan Kettering Cancer Center, New York, NY, USA
| | - Linda Chen
- Department of Radiation Oncology, Memorial Sloan Kettering Cancer Center, New York, NY, USA
| | - Daphna Y. Gelblum
- Department of Radiation Oncology, Memorial Sloan Kettering Cancer Center, New York, NY, USA
| | - Jung Julie Kang
- Department of Radiation Oncology, Memorial Sloan Kettering Cancer Center, New York, NY, USA
| | - Sean M. McBride
- Department of Radiation Oncology, Memorial Sloan Kettering Cancer Center, New York, NY, USA
| | - Chiaojung J. Tsai
- Department of Radiation Oncology, Memorial Sloan Kettering Cancer Center, New York, NY, USA
| | - Nadeem Riaz
- Department of Radiation Oncology, Memorial Sloan Kettering Cancer Center, New York, NY, USA
| | - Nancy Y. Lee
- Department of Radiation Oncology, Memorial Sloan Kettering Cancer Center, New York, NY, USA
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9
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Whoolery CW, Yun S, Reynolds RP, Lucero MJ, Soler I, Tran FH, Ito N, Redfield RL, Richardson DR, Shih HY, Rivera PD, Chen BPC, Birnbaum SG, Stowe AM, Eisch AJ. Multi-domain cognitive assessment of male mice shows space radiation is not harmful to high-level cognition and actually improves pattern separation. Sci Rep 2020; 10:2737. [PMID: 32066765 PMCID: PMC7026431 DOI: 10.1038/s41598-020-59419-z] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2019] [Accepted: 01/23/2020] [Indexed: 12/20/2022] Open
Abstract
Astronauts on interplanetary missions - such as to Mars - will be exposed to space radiation, a spectrum of highly-charged, fast-moving particles that includes 56Fe and 28Si. Earth-based preclinical studies show space radiation decreases rodent performance in low- and some high-level cognitive tasks. Given astronaut use of touchscreen platforms during training and space flight and given the ability of rodent touchscreen tasks to assess functional integrity of brain circuits and multiple cognitive domains in a non-aversive way, here we exposed 6-month-old C57BL/6J male mice to whole-body space radiation and subsequently assessed them on a touchscreen battery. Relative to Sham treatment, 56Fe irradiation did not overtly change performance on tasks of visual discrimination, reversal learning, rule-based, or object-spatial paired associates learning, suggesting preserved functional integrity of supporting brain circuits. Surprisingly, 56Fe irradiation improved performance on a dentate gyrus-reliant pattern separation task; irradiated mice learned faster and were more accurate than controls. Improved pattern separation performance did not appear to be touchscreen-, radiation particle-, or neurogenesis-dependent, as 56Fe and 28Si irradiation led to faster context discrimination in a non-touchscreen task and 56Fe decreased new dentate gyrus neurons relative to Sham. These data urge revisitation of the broadly-held view that space radiation is detrimental to cognition.
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Affiliation(s)
- Cody W Whoolery
- Department of Psychiatry, University of Texas Southwestern Medical Center, Dallas, TX, USA
- Department of Neurology and Neurotherapeutics, UT Southwestern Medical Center, Dallas, TX, USA
| | - Sanghee Yun
- Department of Anesthesiology and Critical Care Medicine, Children's Hospital of Philadelphia, Philadelphia, PA, USA
- Department of Anesthesiology and Critical Care Medicine, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA, USA
| | - Ryan P Reynolds
- Department of Psychiatry, University of Texas Southwestern Medical Center, Dallas, TX, USA
- Department of Anesthesiology and Critical Care Medicine, Children's Hospital of Philadelphia, Philadelphia, PA, USA
| | - Melanie J Lucero
- Department of Psychiatry, University of Texas Southwestern Medical Center, Dallas, TX, USA
| | - Ivan Soler
- Department of Neuroscience and Mahoney Institute for Neurosciences, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA, USA
| | - Fionya H Tran
- Department of Anesthesiology and Critical Care Medicine, Children's Hospital of Philadelphia, Philadelphia, PA, USA
| | - Naoki Ito
- Department of Psychiatry, University of Texas Southwestern Medical Center, Dallas, TX, USA
- Oriental Medicine Research Center, Kitasato University, Tokyo, Japan
| | - Rachel L Redfield
- Department of Psychiatry, University of Texas Southwestern Medical Center, Dallas, TX, USA
| | - Devon R Richardson
- Department of Psychiatry, University of Texas Southwestern Medical Center, Dallas, TX, USA
| | - Hung-Ying Shih
- Department of Radiation Oncology, University of Texas Southwestern Medical Center, Dallas, TX, USA
| | - Phillip D Rivera
- Department of Psychiatry, University of Texas Southwestern Medical Center, Dallas, TX, USA
- Department of Biology, Hope College, Holland, MI, USA
| | - Benjamin P C Chen
- Department of Radiation Oncology, University of Texas Southwestern Medical Center, Dallas, TX, USA
| | - Shari G Birnbaum
- Department of Psychiatry, University of Texas Southwestern Medical Center, Dallas, TX, USA
| | - Ann M Stowe
- Department of Neurology and Neurotherapeutics, UT Southwestern Medical Center, Dallas, TX, USA
- Department of Neurology, University of Kentucky, Lexington, KY, USA
| | - Amelia J Eisch
- Department of Psychiatry, University of Texas Southwestern Medical Center, Dallas, TX, USA.
- Department of Anesthesiology and Critical Care Medicine, Children's Hospital of Philadelphia, Philadelphia, PA, USA.
- Department of Anesthesiology and Critical Care Medicine, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA, USA.
- Department of Neuroscience and Mahoney Institute for Neurosciences, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA, USA.
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