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Yilmaz MT, Kahvecioglu A, Yedekci FY, Yigit E, Ciftci GC, Kertmen N, Zorlu F, Yazici G. Comparison of different target volume delineation strategies based on recurrence patterns in adjuvant radiotherapy for glioblastoma. Neurooncol Pract 2024; 11:275-283. [PMID: 38737611 PMCID: PMC11085836 DOI: 10.1093/nop/npae009] [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] [Indexed: 05/14/2024] Open
Abstract
Background Radiation Therapy Oncology Group (RTOG) and the European Organization for Research and Treatment of Cancer (EORTC) recommendations are commonly used guidelines for adjuvant radiotherapy in glioblastoma. In our institutional protocol, we delineate T2-FLAIR alterations as gross target volume (GTV) with reduced clinical target volume (CTV) margins. We aimed to present our oncologic outcomes and compare the recurrence patterns and planning parameters with EORTC and RTOG delineation strategies. Methods Eighty-one patients who received CRT between 2014 and 2021 were evaluated retrospectively. EORTC and RTOG delineations performed on the simulation computed tomography and recurrence patterns and planning parameters were compared between delineation strategies. Statistical Package for the Social Sciences (SPSS) version 23.0 (IBM, Armonk, NY, USA) was utilized for statistical analyses. Results Median overall survival and progression-free survival were 21 months and 11 months, respectively. At a median 18 month follow-up, of the 48 patients for whom recurrence pattern analysis was performed, recurrence was encompassed by only our institutional protocol's CTV in 13 (27%) of them. For the remaining 35 (73%) patients, recurrence was encompassed by all separate CTVs. In addition to the 100% rate of in-field recurrence, the smallest CTV and lower OAR doses were obtained by our protocol. Conclusions The current study provides promising results for including the T2-FLAIR alterations to the GTV with smaller CTV margins with impressive survival outcomes without any marginal recurrence. The fact that our protocol did not result in larger irradiated brain volume is further encouraging in terms of toxicity.
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Affiliation(s)
- Melek Tugce Yilmaz
- Department of Radiation Oncology, Faculty of Medicine, Hacettepe University, Ankara, Turkey
| | - Alper Kahvecioglu
- Department of Radiation Oncology, Faculty of Medicine, Hacettepe University, Ankara, Turkey
| | - Fazli Yagiz Yedekci
- Department of Radiation Oncology, Faculty of Medicine, Hacettepe University, Ankara, Turkey
| | - Ecem Yigit
- Department of Radiation Oncology, Faculty of Medicine, Hacettepe University, Ankara, Turkey
| | - Gokcen Coban Ciftci
- Radiology Department, Faculty of Medicine, Hacettepe University, Ankara, Turkey
| | - Neyran Kertmen
- Department of Medical Oncology, Faculty of Medicine, Hacettepe University, Ankara, Turkey
| | - Faruk Zorlu
- Department of Radiation Oncology, Faculty of Medicine, Hacettepe University, Ankara, Turkey
| | - Gozde Yazici
- Department of Radiation Oncology, Faculty of Medicine, Hacettepe University, Ankara, Turkey
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2
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Debreczeni-Máté Z, Törő I, Simon M, Gál K, Barabás M, Sipos D, Kovács A. Recurrence Patterns after Radiotherapy for Glioblastoma with [(11)C]methionine Positron Emission Tomography-Guided Irradiation for Target Volume Optimization. Diagnostics (Basel) 2024; 14:964. [PMID: 38732378 PMCID: PMC11083337 DOI: 10.3390/diagnostics14090964] [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: 04/16/2024] [Revised: 04/29/2024] [Accepted: 04/30/2024] [Indexed: 05/13/2024] Open
Abstract
11C methionine (11C-MET) is increasingly being used in addition to contrast-enhanced MRI to plan for radiotherapy of patients with glioblastomas. This study aimed to assess the recurrence pattern quantitatively. Glioblastoma patients undergoing 11C-MET PET examination before primary radiotherapy from 2018 to 2023 were included in the analysis. A clinical target volume was manually created and fused with MRI-based gross tumor volumes and MET PET-based biological target volume. The recurrence was noted as an area of contrast enhancement on the first MRI scan, which showed progression. The recurrent tumor was identified on the radiological MR images in terms of recurrent tumor volume, and recurrences were classified as central, in-field, marginal, or ex-field tumors. We then compared the MET-PET-defined biological target volume with the MRI-defined recurrent tumor volume regarding spatial overlap (the Dice coefficient) and the Hausdorff distance. Most recurrences occurred locally within the primary tumor area (64.8%). The mean Hausdorff distance was 39.4 mm (SD 32.25), and the mean Dice coefficient was 0.30 (SD 0.22). In patients with glioblastoma, the analysis of the recurrence pattern has been mainly based on FET-PET. Our study confirms that the recurrence pattern after gross tumor volume-based treatment contoured by MET-PET is consistent with the FET-PET-based treatment described in the literature.
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Affiliation(s)
- Zsanett Debreczeni-Máté
- Doctoral School of Health Sciences, Faculty of Health Sciences, University of Pécs, 7621 Pécs, Hungary; (Z.D.-M.)
| | - Imre Törő
- Department of Oncoradiology, Faculty of Medicine, University of Debrecen, 4032 Debrecen, Hungary
| | - Mihaly Simon
- Department of Oncoradiology, Faculty of Medicine, University of Debrecen, 4032 Debrecen, Hungary
| | - Kristof Gál
- Department of Oncoradiology, Faculty of Medicine, University of Debrecen, 4032 Debrecen, Hungary
| | - Marton Barabás
- Department of Oncoradiology, Faculty of Medicine, University of Debrecen, 4032 Debrecen, Hungary
| | - David Sipos
- Doctoral School of Health Sciences, Faculty of Health Sciences, University of Pécs, 7621 Pécs, Hungary; (Z.D.-M.)
- Department of Medical Imaging, Faculty of Health Sciences, University of Pécs, 7621 Pécs, Hungary
| | - Arpad Kovács
- Doctoral School of Health Sciences, Faculty of Health Sciences, University of Pécs, 7621 Pécs, Hungary; (Z.D.-M.)
- Department of Oncoradiology, Faculty of Medicine, University of Debrecen, 4032 Debrecen, Hungary
- Department of Medical Imaging, Faculty of Health Sciences, University of Pécs, 7621 Pécs, Hungary
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3
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Randall J, Sachdev S. A valuable glioblastoma prognostic marker driven by radiosensitivity. Neuro Oncol 2024; 26:514-515. [PMID: 38262690 PMCID: PMC10911991 DOI: 10.1093/neuonc/noad266] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/26/2023] [Indexed: 01/25/2024] Open
Affiliation(s)
- James Randall
- Department of Radiation Oncology, Robert H. Lurie Comprehensive Cancer Center, Northwestern University, Chicago, Illinois, USA
| | - Sean Sachdev
- Department of Radiation Oncology, Robert H. Lurie Comprehensive Cancer Center, Northwestern University, Chicago, Illinois, USA
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4
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Breen WG, Aryal MP, Cao Y, Kim MM. Integrating multi-modal imaging in radiation treatments for glioblastoma. Neuro Oncol 2024; 26:S17-S25. [PMID: 38437666 PMCID: PMC10911793 DOI: 10.1093/neuonc/noad187] [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] [Indexed: 03/06/2024] Open
Abstract
Advances in diagnostic and treatment technology along with rapid developments in translational research may now allow the realization of precision radiotherapy. Integration of biologically informed multimodality imaging to address the spatial and temporal heterogeneity underlying treatment resistance in glioblastoma is now possible for patient care, with evidence of safety and potential benefit. Beyond their diagnostic utility, several candidate imaging biomarkers have emerged in recent early-phase clinical trials of biologically based radiotherapy, and their definitive assessment in multicenter prospective trials is already in development. In this review, the rationale for clinical implementation of candidate advanced magnetic resonance imaging and positron emission tomography imaging biomarkers to guide personalized radiotherapy, the current landscape, and future directions for integrating imaging biomarkers into radiotherapy for glioblastoma are summarized. Moving forward, response-adaptive radiotherapy using biologically informed imaging biomarkers to address emerging treatment resistance in rational combination with novel systemic therapies may ultimately permit improvements in glioblastoma outcomes and true individualization of patient care.
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Affiliation(s)
- William G Breen
- Department of Radiation Oncology, Mayo Clinic, Rochester, Minnesota, USA
| | - Madhava P Aryal
- Department of Radiation Oncology, University of Michigan, Ann Arbor, Michigan, USA
| | - Yue Cao
- Department of Radiation Oncology, University of Michigan, Ann Arbor, Michigan, USA
| | - Michelle M Kim
- Department of Radiation Oncology, University of Michigan, Ann Arbor, Michigan, USA
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5
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Seaberg MH, Kazda T, Youland RS, Laack NN, Pafundi DH, Anderson SK, Sarkaria JN, Galanis E, Brown PD, Brinkmann DH. Dosimetric patterns of failure in the era of novel chemoradiotherapy in newly-diagnosed glioblastoma patients. Radiother Oncol 2023; 188:109768. [PMID: 37385378 DOI: 10.1016/j.radonc.2023.109768] [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: 11/18/2022] [Revised: 06/09/2023] [Accepted: 06/21/2023] [Indexed: 07/01/2023]
Abstract
BACKGROUND Patterns of failure (POF) may provide an alternative quantitative endpoint to overall survival for evaluation of novel chemoradiotherapy regimens with glioblastoma. MATERIALS AND METHODS POF of 109 newly-diagnosed glioblastoma patients per 2016 WHO classification who received conformal radiotherapy with concomitant and adjuvant temozolomide were reviewed. Seventy-five of those patients also received an investigational chemotherapy agent (everolimus, erlotinib, or vorinostat). Recurrence volumes were defined with MRI contrast enhancement. POF at protocol (POFp), initial (POFi), and RANO (POFRANO) progression timepoints were characterized by the percentage of recurrence volume within the 95% dose region. POFp, POFi, and POFRANO of each patient were categorized (central, non-central, or both). RESULTS POF of the temozolomide-only control cohort were unchanged (79% central, 12% non-central, and 9% both) across protocol, initial, and RANO progression timepoints. Unlike the temozolomide-only cohort, POF of the collective novel chemotherapy cohort appeared increasingly non-central when comparing POFi with POFp, with a non-central component increasing from 16% to 29% (p = 0.078). POF did not correlate with overall survival or time to progression. CONCLUSION POF of patients receiving a novel chemotherapy appeared to be influenced by the timepoint of analysis and were increasingly non-central at protocol progression as compared with initial recurrence, suggesting that recurrence originates from the central region. Addition of everolimus and vorinostat appeared to influence POF, despite similar survival outcomes with the temozolomide-only control group. In studies dealing with novel therapeutic agents, robust and properly-timed dosimetric POF analysis may be helpful to evaluate biologic aspects of novel agents.
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Affiliation(s)
- Maasa H Seaberg
- University of California San Francisco Medical Center, Department of Radiation Oncology, San Francisco, CA, USA
| | - Tomas Kazda
- Department of Radiation Oncology, Masaryk Memorial Cancer Institute, Brno, Czech Republic
| | | | - Nadia N Laack
- Mayo Clinic, Department of Radiation Oncology, Rochester, MN, USA
| | - Deanna H Pafundi
- Mayo Clinic, Department of Radiation Oncology, Jacksonville, FL, USA
| | | | - Jann N Sarkaria
- Mayo Clinic, Department of Radiation Oncology, Rochester, MN, USA
| | | | - Paul D Brown
- Mayo Clinic, Department of Radiation Oncology, Rochester, MN, USA
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6
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Lan XY, Kalkowski L, Chu CY, Jablonska A, Li S, Kai M, Gao Y, Janowski M, Walczak P. Unlocking the potential of ultra-high dose fractionated radiation for effective treatment of glioblastoma. RESEARCH SQUARE 2023:rs.3.rs-3500563. [PMID: 37961626 PMCID: PMC10635404 DOI: 10.21203/rs.3.rs-3500563/v1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/15/2023]
Abstract
Background Conventional radiation therapy for glioblastoma (GBM) has limited efficacy. Regenerative medicine brings hope for repairing damaged tissue, opening opportunities for elevating the maximum acceptable radiation dose. In this study, we explored the effect of ultra-high dose fractionated radiation on brain injury and tumor responses in immunocompetent mice. We also evaluated the role of the HIF-1α under radiation. Methods Naïve and hypoxia-inducible factor-1 alpha (HIF-1α)+/- heterozygous mice received a fractionated daily dose of 20 Gy for three or five consecutive days. Magnetic resonance imaging (MRI) and histology were performed to assess brain injury post-radiation. The 2×105 human GBM1 luciferase-expressing cells were transplanted with tolerance induction protocol. Fractionated radiotherapy was performed during the exponential phase of tumor growth. BLI, MRI, and immunohistochemistry staining were performed to evaluate tumor growth dynamics and radiotherapy responses. Additionally, animal lifespan was recorded. Results Fractionated radiation of 5×20 Gy induced severe brain damage, starting 3 weeks after radiation. All animals from this group died within 12 weeks. In contrast, later onset and less severe brain injury were observed starting 12 weeks after radiation of 3×20 Gy. It resulted in complete GBM eradication and survival of all treated animals. Furthermore, HIF-1α+/- mice exhibited more obvious vascular damage 63 weeks after fractionated radiation of 3×20 Gy. Conclusion Ultra-high dose fractionated 3×20 Gy radiation can eradicate the GBM cells at the cost of only mild brain injury. The HIF-1α gene is a promising target for ameliorating vascular impairment post-radiation, encouraging the implementation of neurorestorative strategies.
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Affiliation(s)
| | | | | | | | | | | | - Yue Gao
- University of Maryland Baltimore
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7
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Bryant JM, Doniparthi A, Weygand J, Cruz-Chamorro R, Oraiqat IM, Andreozzi J, Graham J, Redler G, Latifi K, Feygelman V, Rosenberg SA, Yu HHM, Oliver DE. Treatment of Central Nervous System Tumors on Combination MR-Linear Accelerators: Review of Current Practice and Future Directions. Cancers (Basel) 2023; 15:5200. [PMID: 37958374 PMCID: PMC10649155 DOI: 10.3390/cancers15215200] [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: 09/16/2023] [Revised: 10/26/2023] [Accepted: 10/27/2023] [Indexed: 11/15/2023] Open
Abstract
Magnetic resonance imaging (MRI) provides excellent visualization of central nervous system (CNS) tumors due to its superior soft tissue contrast. Magnetic resonance-guided radiotherapy (MRgRT) has historically been limited to use in the initial treatment planning stage due to cost and feasibility. MRI-guided linear accelerators (MRLs) allow clinicians to visualize tumors and organs at risk (OARs) directly before and during treatment, a process known as online MRgRT. This novel system permits adaptive treatment planning based on anatomical changes to ensure accurate dose delivery to the tumor while minimizing unnecessary toxicity to healthy tissue. These advancements are critical to treatment adaptation in the brain and spinal cord, where both preliminary MRI and daily CT guidance have typically had limited benefit. In this narrative review, we investigate the application of online MRgRT in the treatment of various CNS malignancies and any relevant ongoing clinical trials. Imaging of glioblastoma patients has shown significant changes in the gross tumor volume over a standard course of chemoradiotherapy. The use of adaptive online MRgRT in these patients demonstrated reduced target volumes with cavity shrinkage and a resulting reduction in radiation dose to uninvolved tissue. Dosimetric feasibility studies have shown MRL-guided stereotactic radiotherapy (SRT) for intracranial and spine tumors to have potential dosimetric advantages and reduced morbidity compared with conventional linear accelerators. Similarly, dosimetric feasibility studies have shown promise in hippocampal avoidance whole brain radiotherapy (HA-WBRT). Next, we explore the potential of MRL-based multiparametric MRI (mpMRI) and genomically informed radiotherapy to treat CNS disease with cutting-edge precision. Lastly, we explore the challenges of treating CNS malignancies and special limitations MRL systems face.
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Affiliation(s)
- John Michael Bryant
- Department of Radiation Oncology, H. Lee Moffitt Cancer Center and Research Institute, Tampa, FL 33612, USA (I.M.O.); (J.A.); (G.R.); (K.L.); (H.-H.M.Y.)
| | - Ajay Doniparthi
- Morsani College of Medicine, University of South Florida, Tampa, FL 33602, USA;
| | - Joseph Weygand
- Department of Radiation Oncology, H. Lee Moffitt Cancer Center and Research Institute, Tampa, FL 33612, USA (I.M.O.); (J.A.); (G.R.); (K.L.); (H.-H.M.Y.)
| | - Ruben Cruz-Chamorro
- Department of Radiation Oncology, H. Lee Moffitt Cancer Center and Research Institute, Tampa, FL 33612, USA (I.M.O.); (J.A.); (G.R.); (K.L.); (H.-H.M.Y.)
| | - Ibrahim M. Oraiqat
- Department of Radiation Oncology, H. Lee Moffitt Cancer Center and Research Institute, Tampa, FL 33612, USA (I.M.O.); (J.A.); (G.R.); (K.L.); (H.-H.M.Y.)
| | - Jacqueline Andreozzi
- Department of Radiation Oncology, H. Lee Moffitt Cancer Center and Research Institute, Tampa, FL 33612, USA (I.M.O.); (J.A.); (G.R.); (K.L.); (H.-H.M.Y.)
| | - Jasmine Graham
- Department of Radiation Oncology, H. Lee Moffitt Cancer Center and Research Institute, Tampa, FL 33612, USA (I.M.O.); (J.A.); (G.R.); (K.L.); (H.-H.M.Y.)
| | - Gage Redler
- Department of Radiation Oncology, H. Lee Moffitt Cancer Center and Research Institute, Tampa, FL 33612, USA (I.M.O.); (J.A.); (G.R.); (K.L.); (H.-H.M.Y.)
| | - Kujtim Latifi
- Department of Radiation Oncology, H. Lee Moffitt Cancer Center and Research Institute, Tampa, FL 33612, USA (I.M.O.); (J.A.); (G.R.); (K.L.); (H.-H.M.Y.)
| | - Vladimir Feygelman
- Department of Radiation Oncology, H. Lee Moffitt Cancer Center and Research Institute, Tampa, FL 33612, USA (I.M.O.); (J.A.); (G.R.); (K.L.); (H.-H.M.Y.)
| | - Stephen A. Rosenberg
- Department of Radiation Oncology, H. Lee Moffitt Cancer Center and Research Institute, Tampa, FL 33612, USA (I.M.O.); (J.A.); (G.R.); (K.L.); (H.-H.M.Y.)
| | - Hsiang-Hsuan Michael Yu
- Department of Radiation Oncology, H. Lee Moffitt Cancer Center and Research Institute, Tampa, FL 33612, USA (I.M.O.); (J.A.); (G.R.); (K.L.); (H.-H.M.Y.)
| | - Daniel E. Oliver
- Department of Radiation Oncology, H. Lee Moffitt Cancer Center and Research Institute, Tampa, FL 33612, USA (I.M.O.); (J.A.); (G.R.); (K.L.); (H.-H.M.Y.)
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8
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Bao J, Pan Z, Wei S. Initial Treatment of IDH-Wildtype Glioblastoma in Adults Older Than 70 Years. Cureus 2023; 15:e47602. [PMID: 37881322 PMCID: PMC10597738 DOI: 10.7759/cureus.47602] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 10/24/2023] [Indexed: 10/27/2023] Open
Abstract
The incidence of glioblastoma, the most common malignant primary brain tumour in adults, increases after the age of 40 and peaks in adults aged 75-84 years. Initial management involves maximising surgical resection while preserving neurologic function. IDH mutations and MGMT promoter methylation should be checked in tumour samples. Radiation and temozolomide constitute initial treatment for newly diagnosed glioblastoma patients with good functional status. It is suggested that patients who have received concurrent and adjuvant temozolomide treatment should undergo six cycles of adjuvant monthly temozolomide, as opposed to a more extended treatment regimen. Low-intensity alternating electric field therapy improved survival in a large randomised trial. We provide a detailed review, providing the latest treatment viewpoint for IDH-wildtype glioblastoma and including the current situation of immunotherapy. The treatment ideas and methods reviewed here would be of help to physicians when they encounter patients with this kind of IDH-wildtype glioblastoma in clinical practice.
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Affiliation(s)
- Jing Bao
- Neurosurgery, Shidong Hospital of Yangpu District, Shanghai, CHN
| | - Zhenjiang Pan
- Neurosurgery, Shidong Hospital of Yangpu District, Shanghai, CHN
| | - Shepeng Wei
- Neurosurgery, Shidong Hospital of Yangpu District, Shanghai, CHN
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9
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Crompton D, Koffler D, Fekrmandi F, Lehrer EJ, Sheehan JP, Trifiletti DM. Preoperative stereotactic radiosurgery as neoadjuvant therapy for resectable brain tumors. J Neurooncol 2023; 165:21-28. [PMID: 37889441 DOI: 10.1007/s11060-023-04466-5] [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: 08/08/2023] [Accepted: 09/25/2023] [Indexed: 10/28/2023]
Abstract
PURPOSE Stereotactic radiosurgery (SRS) is a method of delivering conformal radiation, which allows minimal radiation damage to surrounding healthy tissues. Adjuvant radiation therapy has been shown to improve local control in a variety of intracranial neoplasms, such as brain metastases, gliomas, and benign tumors (i.e., meningioma, vestibular schwannoma, etc.). For brain metastases, adjuvant SRS specifically has demonstrated positive oncologic outcomes as well as preserving cognitive function when compared to conventional whole brain radiation therapy. However, as compared with neoadjuvant SRS, larger post-operative volumes and greater target volume uncertainty may come with an increased risk of local failure and treatment-related complications, such as radiation necrosis. In addition to its role in brain metastases, neoadjuvant SRS for high grade gliomas may enable dose escalation and increase immunogenic effects and serve a purpose in benign tumors for which one cannot achieve a gross total resection (GTR). Finally, although neoadjuvant SRS has historically been delivered with photon therapy, there are high LET radiation modalities such as carbon-ion therapy which may allow radiation damage to tissue and should be further studied if done in the neoadjuvant setting. In this review we discuss the evolving role of neoadjuvant radiosurgery in the treatment for brain metastases, gliomas, and benign etiologies. We also offer perspective on the evolving role of high LET radiation such as carbon-ion therapy. METHODS PubMed was systemically reviewed using the search terms "neoadjuvant radiosurgery", "brain metastasis", and "glioma". ' Clinicaltrials.gov ' was also reviewed to include ongoing phase III trials. RESULTS This comprehensive review describes the evolving role for neoadjuvant SRS in the treatment for brain metastases, gliomas, and benign etiologies. We also discuss the potential role for high LET radiation in this setting such as carbon-ion radiotherapy. CONCLUSION Early clinical data is very promising for neoadjuvant SRS in the setting of brain metastases. There are three ongoing phase III trials that will be more definitive in evaluating the potential benefits. While there is less data available for neoadjuvant SRS for gliomas, there remains a potential role, particularly to enable dose escalation and increase immunogenic effects.
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Affiliation(s)
- David Crompton
- Department of Radiation Oncology, Mayo Clinic, 4500 San Pablo Road South, Jacksonville, FL, 32224, USA
| | - Daniel Koffler
- Department of Radiation Oncology, Mayo Clinic, 4500 San Pablo Road South, Jacksonville, FL, 32224, USA
| | - Fatemeh Fekrmandi
- Department of Radiation Oncology, Roswell Park Comprehensive Cancer Center, Buffalo, USA
| | - Eric J Lehrer
- Department of Radiation Oncology, Mayo Clinic, Rochester, USA
| | - Jason P Sheehan
- Department of Neurological Surgery, University of Virginia, Charlottesville, USA
| | - Daniel M Trifiletti
- Department of Radiation Oncology, Mayo Clinic, 4500 San Pablo Road South, Jacksonville, FL, 32224, USA.
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10
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Kotian S, Carnes RM, Stern JL. Enhancing Transcriptional Reprogramming of Mesenchymal Glioblastoma with Grainyhead-like 2 and HDAC Inhibitors Leads to Apoptosis and Cell-Cycle Dysregulation. Genes (Basel) 2023; 14:1787. [PMID: 37761927 PMCID: PMC10530281 DOI: 10.3390/genes14091787] [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: 08/07/2023] [Revised: 09/06/2023] [Accepted: 09/06/2023] [Indexed: 09/29/2023] Open
Abstract
Glioblastoma (GBM) tumor cells exhibit mesenchymal properties which are thought to play significant roles in therapeutic resistance and tumor recurrence. An important question is whether impairment of the mesenchymal state of GBM can sensitize these tumors to therapeutic intervention. HDAC inhibitors (HDACi) are being tested in GBM for their ability promote mesenchymal-to-epithelial transcriptional (MET) reprogramming, and for their cancer-specific ability to dysregulate the cell cycle and induce apoptosis. We set out to enhance the transcriptional reprogramming and apoptotic effects of HDACi in GBM by introducing an epithelial transcription factor, Grainyhead-like 2 (GRHL2), to specifically counter the mesenchymal state. GRHL2 significantly enhanced HDACi-mediated MET reprogramming. Surprisingly, we found that inducing GRHL2 in glioma stem cells (GSCs) altered cell-cycle drivers and promoted aneuploidy. Mass spectrometry analysis of GRHL2 interacting proteins revealed association with several key mitotic factors, suggesting their exogenous expression disrupted the established mitotic program in GBM. Associated with this cell-cycle dysregulation, the combination of GRHL2 and HDACi induced elevated levels of apoptosis. The key implication of our study is that although genetic strategies to repress the mesenchymal properties of glioblastoma may be effective, biological interactions of epithelial factors in mesenchymal cancer cells may dysregulate normal homeostatic cellular mechanisms.
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Affiliation(s)
| | | | - Josh L. Stern
- Department of Biochemistry and Molecular Genetics, University of Alabama at Birmingham, Birmingham, AL 35233, USA
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11
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Dejonckheere CS, Thelen A, Simon B, Greschus S, Köksal MA, Schmeel LC, Wilhelm-Buchstab T, Leitzen C. Impact of Postoperative Changes in Brain Anatomy on Target Volume Delineation for High-Grade Glioma. Cancers (Basel) 2023; 15:2840. [PMID: 37345177 DOI: 10.3390/cancers15102840] [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: 04/20/2023] [Revised: 05/14/2023] [Accepted: 05/17/2023] [Indexed: 06/23/2023] Open
Abstract
High-grade glioma has a poor prognosis, and radiation therapy plays a crucial role in its management. Every step of treatment planning should thus be optimised to maximise survival chances and minimise radiation-induced toxicity. Here, we compare structures needed for target volume delineation between an immediate postoperative magnetic resonance imaging (MRI) and a radiation treatment planning MRI to establish the need for the latter. Twenty-eight patients were included, with a median interval between MRIs (range) of 19.5 (8-50) days. There was a mean change in resection cavity position (range) of 3.04 ± 3.90 (0-22.1) mm, with greater positional changes in skull-distant (>25 mm) resection cavity borders when compared to skull-near (≤25 mm) counterparts (p < 0.001). The mean differences in resection cavity and surrounding oedema and FLAIR hyperintensity volumes were -32.0 ± 29.6% and -38.0 ± 25.0%, respectively, whereas the mean difference in midline shift (range) was -2.64 ± 2.73 (0-11) mm. These data indicate marked short-term volumetric changes and support the role of an MRI to aid in target volume delineation as close to radiation treatment start as possible. Planning adapted to the actual anatomy at the time of radiation limits the risk of geographic miss and might thus improve outcomes in patients undergoing adjuvant radiation for high-grade glioma.
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Affiliation(s)
| | - Anja Thelen
- Faculty of Medicine, University Bonn, 53127 Bonn, Germany
| | - Birgit Simon
- Department of Radiology, University Hospital Bonn, 53127 Bonn, Germany
| | | | - Mümtaz Ali Köksal
- Department of Radiation Oncology, University Hospital Bonn, 53127 Bonn, Germany
| | | | | | - Christina Leitzen
- Department of Radiation Oncology, University Hospital Bonn, 53127 Bonn, Germany
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12
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Mendoza MG, Azoulay M, Chang SD, Gibbs IC, Hancock SL, Pollom EL, Adler JR, Harraher C, Li G, Gephart MH, Nagpal S, Thomas RP, Recht LD, Jacobs LR, Modlin LA, Wynne J, Seiger K, Fujimoto D, Usoz M, von Eyben R, Choi CYH, Soltys SG. Patterns of Progression in Patients With Newly Diagnosed Glioblastoma Treated With 5-mm Margins in a Phase 1/2 Trial of 5-Fraction Stereotactic Radiosurgery With Concurrent and Adjuvant Temozolomide. Pract Radiat Oncol 2023; 13:e239-e245. [PMID: 36736621 DOI: 10.1016/j.prro.2023.01.008] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2022] [Revised: 12/16/2022] [Accepted: 01/18/2023] [Indexed: 02/05/2023]
Abstract
PURPOSE In patients with newly diagnosed glioblastoma (GBM), tumor margins of at least 20 mm are the standard of care. We sought to determine the pattern of tumor progression in patients treated with 5-fraction stereotactic radiosurgery with 5-mm margins. METHODS AND MATERIALS Thirty adult patients with newly diagnosed GBM were treated with 5-fraction stereotactic radiosurgery in escalated doses from 25 to 40 Gy with a 5-mm total treatment margin. Progression was scored as "in-field" if the recurrent tumor was within or contiguous with the 5-mm margin, "marginal" if between 5 and 20 mm, and "distant" if entirely occurring greater than 20 mm. As geometric patterns of progression do not reflect the biologic dose received, we calculated the minimum equi-effective dose in 2 Gy (EQD2) per day at the site of tumor recurrence. Progression was "dosimetrically in-field" if covered by a minimum EQD2 per day of 48 Gy10. RESULTS From 2010 to 2016, 27 patients had progressed. Progression was in-field in 17 (63%), marginal in 3 (11%), and distant in 7 (26%) patients. In the 3 patients with marginal progression, the minimum EQD2 to recurrent tumor were 48 Gy10, 56 Gy10 (both considered dosimetrically in-field), and 7 Gy10 (ie, dosimetrically out-of-field). Median overall survival was 12.1 months for in-field (95% confidence interval [CI], 8.9-17.6), 15.1 months (95% CI, 10.1 to not achieved) for marginal, and 21.4 months (95% CI, 11.2-33.5) for distant progression. Patients with radiation necrosis were less likely to have in-field progression (1 of 7; 14%) compared with those without radiation necrosis (16 of 20; 80%; P = .003); those with necrosis had a median overall survival of 27.2 months (95% CI, 11.2-48.3) compared with 11.7 months (95% CI, 8.9-17.6) for patients with no necrosis (P = .077). CONCLUSIONS In patients with newly diagnosed GBM treated with a 5-mm clinical target volume margin, 3 patients (11%) had marginal progression within 5 to 20 mm; only 1 patient (4%) may have dosimetrically benefitted from conventional 20-mm margins. Radiation necrosis was associated with in-field tumor control.
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Affiliation(s)
- Maria G Mendoza
- Department of Radiation Oncology, Stanford University, Stanford, California
| | - Melissa Azoulay
- Department of Radiation Oncology, McGill University Health Centre, Montreal, Quebec, Canada
| | - Steven D Chang
- Department of Neurosurgery, Stanford University, Stanford, California
| | - Iris C Gibbs
- Department of Radiation Oncology, Stanford University, Stanford, California
| | - Steven L Hancock
- Department of Radiation Oncology, Stanford University, Stanford, California
| | - Erqi L Pollom
- Department of Radiation Oncology, Stanford University, Stanford, California
| | - John R Adler
- Department of Neurosurgery, Stanford University, Stanford, California
| | - Ciara Harraher
- Department of Neurosurgery, Stanford University, Stanford, California
| | - Gordon Li
- Department of Neurosurgery, Stanford University, Stanford, California
| | | | - Seema Nagpal
- Department of Neurology, Stanford University, Stanford, California
| | - Reena P Thomas
- Department of Neurology, Stanford University, Stanford, California
| | - Lawrence D Recht
- Department of Neurology, Stanford University, Stanford, California
| | - Lisa R Jacobs
- Department of Radiation Oncology, Stanford University, Stanford, California
| | - Leslie A Modlin
- Department of Radiation Oncology, Stanford University, Stanford, California
| | - Jacob Wynne
- Department of Radiation Oncology, Stanford University, Stanford, California
| | - Kira Seiger
- Department of Radiation Oncology, Stanford University, Stanford, California
| | - Dylann Fujimoto
- Department of Radiation Oncology, Stanford University, Stanford, California
| | - Melissa Usoz
- Department of Radiation Oncology, Stanford University, Stanford, California
| | - Rie von Eyben
- Department of Radiation Oncology, Stanford University, Stanford, California
| | - Clara Y H Choi
- Department of Radiation Oncology, Santa Clara Valley Medical Center, San Jose, California
| | - Scott G Soltys
- Department of Radiation Oncology, Stanford University, Stanford, California.
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An Integrated Monte Carlo Model for Heterogeneous Glioblastoma Treated with Boron Neutron Capture Therapy. Cancers (Basel) 2023; 15:cancers15051550. [PMID: 36900341 PMCID: PMC10001318 DOI: 10.3390/cancers15051550] [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: 01/16/2023] [Revised: 02/16/2023] [Accepted: 02/27/2023] [Indexed: 03/06/2023] Open
Abstract
BACKGROUND Glioblastomas (GBMs) are notorious for their aggressive features, e.g., intrinsic radioresistance, extensive heterogeneity, hypoxia, and highly infiltrative behaviours. The prognosis has remained poor despite recent advances in systemic and modern X-ray radiotherapy. Boron neutron capture therapy (BNCT) represents an alternative radiotherapy technique for GBM. Previously, a Geant4 BNCT modelling framework was developed for a simplified model of GBM. PURPOSE The current work expands on the previous model by applying a more realistic in silico GBM model with heterogeneous radiosensitivity and anisotropic microscopic extensions (ME). METHODS Each cell within the GBM model was assigned an α/β value associated with different GBM cell lines and a 10B concentration. Dosimetry matrices corresponding to various MEs were calculated and combined to evaluate cell survival fractions (SF) using clinical target volume (CTV) margins of 2.0 & 2.5 cm. SFs for the BNCT simulation were compared with external X-ray radiotherapy (EBRT) SFs. RESULTS The SFs within the beam region decreased by more than two times compared to EBRT. It was demonstrated that BNCT results in markedly reduced SFs for both CTV margins compared to EBRT. However, the SF reduction as a result of the CTV margin extension using BNCT was significantly lower than using X-ray EBRT for one MEP distribution, while it remained similar for the other two MEP models. CONCLUSIONS Although the efficiency of BNCT in terms of cell kill is superior to EBRT, the extension of the CTV margin by 0.5 cm may not increase the BNCT treatment outcome significantly.
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14
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Matsuda M, Mizumoto M, Kohzuki H, Sugii N, Sakurai H, Ishikawa E. High-dose proton beam therapy versus conventional fractionated radiation therapy for newly diagnosed glioblastoma: a propensity score matching analysis. Radiat Oncol 2023; 18:38. [PMID: 36823671 PMCID: PMC9948305 DOI: 10.1186/s13014-023-02236-1] [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: 01/04/2023] [Accepted: 02/20/2023] [Indexed: 02/25/2023] Open
Abstract
BACKGROUND High-dose proton beam therapy (PBT) uses excellent dose concentricity based on the unique characteristic termed the Bragg peak. PBT is a highly feasible treatment option that improves survival in select patients with newly diagnosed glioblastoma (GBM). However, selection bias remains an issue in prior studies that evaluated the efficacy of PBT. The aim of the present study was to compare the survival outcomes and toxicities of high-dose PBT and conventional radiation therapy (CRT) using propensity score-matched treatment cohorts. METHODS The analysis included patients with newly diagnosed GBM treated with high-dose PBT of 96.6 Gy (RBE) or CRT of 60 Gy from 2010 to 2020. Propensity score generation and 1:1 matching of patients were performed based on the following covariates: age, sex, tumor location, extent of resection, chemotherapy, immunotherapy, and pre-radiation Karnofsky performance scale score. RESULTS From a total of 235 patients, 26 were selected in each group by propensity score matching. The median overall survival (OS) of the PBT group was 28.3 months, while the median OS of the CRT group was 21.2 months. Although acute radiation-related toxicities were equivalent between the PBT and CRT groups, radiation necrosis as a late radiation-related toxicity was observed significantly more frequently in the PBT group. CONCLUSIONS High-dose PBT provided significant survival benefits for patients with newly diagnosed GBM compared to CRT as shown by propensity score matching analysis. Radiation necrosis remains an issue in high-dose PBT; thus, the establishment of an effective treatment strategy centered on bevacizumab would be essential.
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Affiliation(s)
- Masahide Matsuda
- Department of Neurosurgery, Faculty of Medicine, University of Tsukuba, Tsukuba, Ibaraki, 305-8575, Japan.
| | - Masashi Mizumoto
- grid.20515.330000 0001 2369 4728Department of Radiation Oncology, Proton Medical Research Center, University of Tsukuba, Tsukuba, Ibaraki Japan
| | - Hidehiro Kohzuki
- grid.20515.330000 0001 2369 4728Department of Neurosurgery, Faculty of Medicine, University of Tsukuba, Tsukuba, Ibaraki 305-8575 Japan
| | - Narushi Sugii
- grid.20515.330000 0001 2369 4728Department of Neurosurgery, Faculty of Medicine, University of Tsukuba, Tsukuba, Ibaraki 305-8575 Japan
| | - Hideyuki Sakurai
- grid.20515.330000 0001 2369 4728Department of Radiation Oncology, Proton Medical Research Center, University of Tsukuba, Tsukuba, Ibaraki Japan
| | - Eiichi Ishikawa
- grid.20515.330000 0001 2369 4728Department of Neurosurgery, Faculty of Medicine, University of Tsukuba, Tsukuba, Ibaraki 305-8575 Japan
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15
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Dose reduction of hippocampus using HyperArc planning in postoperative radiotherapy for primary brain tumors. Med Dosim 2023; 48:67-72. [PMID: 36653285 DOI: 10.1016/j.meddos.2022.12.001] [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: 08/25/2022] [Revised: 12/05/2022] [Accepted: 12/06/2022] [Indexed: 01/18/2023]
Abstract
To compare dosimetric parameters for the hippocampus, organs at risk (OARs), and targets of volumetric modulated arc therapy (VMAT), noncoplanar VMAT (NC-VMAT), and HyperArc (HA) plans in patients undergoing postoperative radiotherapy for primary brain tumors. For 20 patients, HA plans were generated to deliver 40.05 to 60 Gy for the planning target volume (PTV). In addition, doses for the hippocampus and OARs were minimized. The VMAT and NC-VMAT plans were retrospectively generated using the same optimization parameters as those in the HA plans. For the hippocampus, the equivalent dose to be administered in 2 Gy fractions (EQD2) was calculated assuming α/β = 2. Dosimetric parameters for the PTV, hippocampus, and OARs in the VMAT, NC-VMAT, and HA plans were compared. For PTV, the HA plans provided significantly lower Dmax and D1% than the VMAT and NC-VMAT plans (p < 0.05), whereas the D99% and Dmin were significantly higher (p < 0.05). For the contralateral hippocampus, the dosimetric parameters in the HA plans (8.1 ± 9.6, 6.5 ± 7.2, 5.6 ± 5.8, and 4.8 ± 4.7 Gy for D20%, D40%, D60% and D80%, respectively) were significantly smaller (p < 0.05) than those in the VMAT and NC-VMAT plans. Except for the optic chiasm, the Dmax in the HA plans (brainstem, lens, optic nerves, and retinas) was the smallest (p < 0.05). In addition, the doses in the HA plans for the brain and skin were the smallest (p < 0.05) among the 3 plans. HA planning, instead of coplanar and noncoplanar VMAT, significantly reduces the dosage to which the contralateral hippocampus as well as other OARs are exposed without compromising on target coverage.
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16
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Allard B, Dissaux B, Bourhis D, Dissaux G, Schick U, Salaün PY, Abgral R, Querellou S. Hotspot on 18F-FET PET/CT to Predict Aggressive Tumor Areas for Radiotherapy Dose Escalation Guiding in High-Grade Glioma. Cancers (Basel) 2022; 15:cancers15010098. [PMID: 36612093 PMCID: PMC9817533 DOI: 10.3390/cancers15010098] [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: 11/09/2022] [Revised: 12/19/2022] [Accepted: 12/20/2022] [Indexed: 12/28/2022] Open
Abstract
The standard therapy strategy for high-grade glioma (HGG) is based on the maximal surgery followed by radio-chemotherapy (RT-CT) with insufficient control of the disease. Recurrences are mainly localized in the radiation field, suggesting an interest in radiotherapy dose escalation to better control the disease locally. We aimed to identify a similarity between the areas of high uptake on O-(2-[18F]-fluoroethyl)-L-tyrosine (FET) positron emission tomography/computed tomography (PET) before RT-CT, the residual tumor on post-therapy NADIR magnetic resonance imaging (MRI) and the area of recurrence on MRI. This is an ancillary study from the IMAGG prospective trial assessing the interest of FET PET imaging in RT target volume definition of HGG. We included patients with diagnoses of HGG obtained by biopsy or tumor resection. These patients underwent FET PET and brain MRIs, both after diagnosis and before RT-CT. The follow-up consisted of sequential brain MRIs performed every 3 months until recurrence. Tumor delineation on the initial MRI 1 (GTV 1), post-RT-CT NADIR MRI 2 (GTV 2), and progression MRI 3 (GTV 3) were performed semi-automatically and manually adjusted by a neuroradiologist specialist in neuro-oncology. GTV 2 and GTV 3 were then co-registered on FET PET data. Tumor volumes on FET PET (MTV) were delineated using a tumor to background ratio (TBR) ≥ 1.6 and different % SUVmax PET thresholds. Spatial similarity between different volumes was performed using the dice (DICE), Jaccard (JSC), and overlap fraction (OV) indices and compared together in the biopsy or partial surgery group (G1) and the total or subtotal surgery group (G2). Another overlap index (OV') was calculated to determine the threshold with the highest probability of being included in the residual volume after RT-CT on MRI 2 and in MRI 3 (called "hotspot"). A total of 23 patients were included, of whom 22% (n = 5) did not have a NADIR MRI 2 due to a disease progression diagnosed on the first post-RT-CT MRI evaluation. Among the 18 patients who underwent a NADIR MRI 2, the average residual tumor was approximately 71.6% of the GTV 1. A total of 22% of patients (5/23) showed an increase in GTV 2 without diagnosis of true progression by the multidisciplinary team (MDT). Spatial similarity between MTV and GTV 2 and between MTV and GTV 3 were higher using a TBR ≥ 1.6 threshold. These indices were significantly better in the G1 group than the G2 group. In the FET hotspot analysis, the best similarity (good agreement) with GTV 2 was found in the G1 group using a 90% SUVmax delineation method and showed a trend of statistical difference with those (poor agreement) in the G2 group (OV' = 0.67 vs. 0.38, respectively, p = 0.068); whereas the best similarity (good agreement) with GTV 3 was found in the G1 group using a 80% SUVmax delineation method and was significantly higher than those (poor agreement) in the G2 group (OV'= 0.72 vs. 0.35, respectively, p = 0.014). These results showed modest spatial similarity indices between MTV, GTV 2, and GTV 3 of HGG. Nevertheless, the results were significantly improved in patients who underwent only biopsy or partial surgery. TBR ≥ 1.6 and 80-90% SUVmax FET delineation methods showing a good agreement in the hotspot concept for targeting standard dose and radiation boost. These findings need to be tested in a larger randomized prospective study.
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Affiliation(s)
- Bastien Allard
- Nuclear Medicine Department, University Hospital, 29200 Brest, France
- UFR Médecine, University of Western Brittany (UBO), 29200 Brest, France
| | - Brieg Dissaux
- UFR Médecine, University of Western Brittany (UBO), 29200 Brest, France
- GETBO UMR U_1304, Inserm, University of Western Brittany (UBO), 29200 Brest, France
- Radiology Department, University Hospital, 29200 Brest, France
| | - David Bourhis
- Nuclear Medicine Department, University Hospital, 29200 Brest, France
- UFR Médecine, University of Western Brittany (UBO), 29200 Brest, France
- GETBO UMR U_1304, Inserm, University of Western Brittany (UBO), 29200 Brest, France
| | - Gurvan Dissaux
- UFR Médecine, University of Western Brittany (UBO), 29200 Brest, France
- Radiation Oncology Department, University Hospital, 29200 Brest, France
- LaTIM, INSERM 1101, 29200 Brest, France
| | - Ulrike Schick
- UFR Médecine, University of Western Brittany (UBO), 29200 Brest, France
- Radiation Oncology Department, University Hospital, 29200 Brest, France
- LaTIM, INSERM 1101, 29200 Brest, France
| | - Pierre-Yves Salaün
- Nuclear Medicine Department, University Hospital, 29200 Brest, France
- UFR Médecine, University of Western Brittany (UBO), 29200 Brest, France
- GETBO UMR U_1304, Inserm, University of Western Brittany (UBO), 29200 Brest, France
| | - Ronan Abgral
- Nuclear Medicine Department, University Hospital, 29200 Brest, France
- UFR Médecine, University of Western Brittany (UBO), 29200 Brest, France
- GETBO UMR U_1304, Inserm, University of Western Brittany (UBO), 29200 Brest, France
| | - Solène Querellou
- Nuclear Medicine Department, University Hospital, 29200 Brest, France
- UFR Médecine, University of Western Brittany (UBO), 29200 Brest, France
- GETBO UMR U_1304, Inserm, University of Western Brittany (UBO), 29200 Brest, France
- Correspondence:
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17
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Huang Y, Ding H, Luo M, Li Z, Li S, Xie C, Zhong Y. A new approach to delineating clinical target volume for radiotherapy of glioblastoma: A phase II trial. Front Oncol 2022; 12:931436. [PMID: 36338715 PMCID: PMC9626993 DOI: 10.3389/fonc.2022.931436] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2022] [Accepted: 09/23/2022] [Indexed: 11/25/2022] Open
Abstract
Purpose No consensus has currently been reached regarding the optimal radiation volume for radiotherapy of glioblastoma. Here, we have proposed a new delineation approach to delineating clinical target volume based on the relationship between the growth patterns of glioblastoma and neural pathways. Its safety and efficacy were evaluated in a phase II clinical trial. Methods A total of 69 patients with histologically confirmed glioblastoma were enrolled. All patients underwent tumor resection, followed by focal radiotherapy and concomitant temozolomide (TMZ), and then received six cycles of adjuvant TMZ. The gross tumor volume (GTV) was defined as the surgical resection cavity plus any residual enhancing tumor, on contrast enhanced T1-weighted MRI. The clinical target volume (CTV) was delineated through our new approach. Results The median recurrence-free survival (RFS) and overall survival (OS) were 11.4 months and 18.2 months, which were better than the previous reports. Relapse was found in 47 patients, of whom 41 patients (87.2%) failed in central, two patients (4.3%) failed in field, and four patients (8.5%) failed in distance. No marginal recurrence was found. Our regimen showed a trend of lower rates of marginal recurrence, and the brain volume of high-dose radiation fields in our regimen was similar to that of EORTC (p = 0.257). Conclusions We have proposed a novel method for the delineation of clinical target volume by referencing the nerve fiber bundles for radiotherapy of glioblastoma. The results of the present phase II clinical trial suggest that this approach may be feasible and effective.
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Affiliation(s)
- Yong Huang
- Department of Radiation and Medical Oncology, Zhongnan Hospital, Wuhan University, Wuhan, China
- Hubei Cancer Clinical Study Center, Wuhan University, Wuhan, China
| | - Haixia Ding
- Department of Radiation and Medical Oncology, Zhongnan Hospital, Wuhan University, Wuhan, China
- Hubei Cancer Clinical Study Center, Wuhan University, Wuhan, China
| | - Min Luo
- Department of Radiation and Medical Oncology, Zhongnan Hospital, Wuhan University, Wuhan, China
- Hubei Cancer Clinical Study Center, Wuhan University, Wuhan, China
| | - Zhiqiang Li
- Department of Neurosurgery, Zhongnan Hospital, Wuhan University, Wuhan, China
| | - Sirui Li
- Department of Radiology, Zhongnan Hospital, Wuhan University, Wuhan, China
| | - Conghua Xie
- Department of Radiation and Medical Oncology, Zhongnan Hospital, Wuhan University, Wuhan, China
- Hubei Cancer Clinical Study Center, Wuhan University, Wuhan, China
| | - Yahua Zhong
- Department of Radiation and Medical Oncology, Zhongnan Hospital, Wuhan University, Wuhan, China
- Hubei Cancer Clinical Study Center, Wuhan University, Wuhan, China
- *Correspondence: Yahua Zhong,
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18
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Dajani S, Hill VB, Kalapurakal JA, Horbinski CM, Nesbit EG, Sachdev S, Yalamanchili A, Thomas TO. Imaging of GBM in the Age of Molecular Markers and MRI Guided Adaptive Radiation Therapy. J Clin Med 2022; 11:jcm11195961. [PMID: 36233828 PMCID: PMC9572863 DOI: 10.3390/jcm11195961] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2022] [Revised: 09/26/2022] [Accepted: 09/29/2022] [Indexed: 12/03/2022] Open
Abstract
Glioblastoma (GBM) continues to be one of the most lethal malignancies and is almost always fatal. In this review article, the role of radiation therapy, systemic therapy, as well as the molecular basis of classifying GBM is described. Technological advances in the treatment of GBM are outlined as well as the diagnostic imaging characteristics of this tumor. In addition, factors that affect prognosis such as differentiating progression from treatment effect is discussed. The role of MRI guided radiation therapy and how this technology may provide a mechanism to improve the care of patients with this disease are described.
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19
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Jennrich S, Pelzer M, Tertel T, Koska B, Vüllings M, Thakur BK, Jendrossek V, Timmermann B, Giebel B, Rudner J. CD9- and CD81-positive extracellular vesicles provide a marker to monitor glioblastoma cell response to photon-based and proton-based radiotherapy. Front Oncol 2022; 12:947439. [PMID: 36203458 PMCID: PMC9530604 DOI: 10.3389/fonc.2022.947439] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2022] [Accepted: 08/26/2022] [Indexed: 11/13/2022] Open
Abstract
Glioblastoma multiforme (GBM) is the most aggressive tumor of the central nervous system with a poor prognosis. In the treatment of GBM tumors, radiotherapy plays a major role. Typically, GBM tumors cannot be cured by irradiation because of intrinsic resistance machanisms. An escalation of the irradiation dose in the GBM tumor is difficult due to the high risk of severe side effects in the brain. In the last decade, the development of new irradiation techniques, including proton-based irradiation, promised new chances in the treatment of brain tumors. In contrast to conventional radiotherapy, irradiation with protons allows a dosimetrically more confined dose deposition in the tumor while better sparing the normal tissue surrounding the tumor. A systematic comparison of both irradiation techniques on glioblastoma cells has not been performed so far. Despite the improvements in radiotherapy, it remains challenging to predict the therapeutical response of GBM tumors. Recent publications suggest extracellular vesicles (EVs) as promising markers predicting tumor response. Being part of an ancient intercellular communication system, virtually all cells release specifically composed EVs. The assembly of EVs varies between cell types and depends on environmental parameters. Here, we compared the impact of photon-based with proton-based radiotherapy on cell viability and phenotype of four different glioblastoma cell lines. Furthermore, we characterized EVs released by different glioblastoma cells and correlated released EVs with the cellular response to radiotherapy. Our results demonstrated that glioblastoma cells reacted more sensitive to irradiation with protons than photons, while radiation-induced cell death 72 h after single dose irradiation was independent of the irradiation modality. Moreover, we detected CD9 and CD81-positive EVs in the supernatant of all glioblastoma cells, although at different concentrations. The amount of released CD9 and CD81-positive EVs increased after irradiation when cells became apoptotic. Although secreted EVs of non-irradiated cells were not predictive for radiosensitivity, their increased EV release after irradiation correlated with the cytotoxic response to radiotherapy 72 h after irradiation. Thus, our data suggest a novel application of EVs in the surveillance of anti-cancer therapies.
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Affiliation(s)
- Sara Jennrich
- Institute of Cell Biology (Cancer Research), University Hospital Essen, University of Duisburg-Essen, Essen, Germany
| | - Martin Pelzer
- Institute of Cell Biology (Cancer Research), University Hospital Essen, University of Duisburg-Essen, Essen, Germany
| | - Tobias Tertel
- Institute for Transfusion Medicine, University Hospital Essen, University of Duisburg-Essen, Essen, Germany
| | - Benjamin Koska
- West German Proton Therapy Centre Essen (WPE), West German Cancer Center (WTZ), University Hospital Essen, University of Duisburg-Essen, Essen, Germany
| | - Melanie Vüllings
- West German Proton Therapy Centre Essen (WPE), West German Cancer Center (WTZ), University Hospital Essen, University of Duisburg-Essen, Essen, Germany
| | - Basant Kumar Thakur
- Department of Pediatrics III, University Hospital Essen, University of Duisburg-Essen, Essen, Germany
| | - Verena Jendrossek
- Institute of Cell Biology (Cancer Research), University Hospital Essen, University of Duisburg-Essen, Essen, Germany
| | - Beate Timmermann
- West German Proton Therapy Centre Essen (WPE), West German Cancer Center (WTZ), University Hospital Essen, University of Duisburg-Essen, Essen, Germany
| | - Bernd Giebel
- Institute for Transfusion Medicine, University Hospital Essen, University of Duisburg-Essen, Essen, Germany
| | - Justine Rudner
- Institute of Cell Biology (Cancer Research), University Hospital Essen, University of Duisburg-Essen, Essen, Germany
- *Correspondence: Justine Rudner,
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Deraniyagala R, Ding X, Alonso-Basanta M, Li T, Rong Y. It is beneficial to invest resources to implement proton intracranial SRS. J Appl Clin Med Phys 2022; 23:e13701. [PMID: 35713887 PMCID: PMC9278676 DOI: 10.1002/acm2.13701] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2022] [Accepted: 06/02/2022] [Indexed: 11/06/2022] Open
Affiliation(s)
- Rohan Deraniyagala
- Department of Radiation Oncology, William Beaumont Hospital, Royal Oak, Michigan, USA
| | - Xuanfeng Ding
- Department of Radiation Oncology, William Beaumont Hospital, Royal Oak, Michigan, USA
| | - Michelle Alonso-Basanta
- Department of Radiation Oncology, University of Pennsylvania, Philadelphia, Pennsylvania, USA
| | - Taoran Li
- Department of Radiation Oncology, University of Pennsylvania, Philadelphia, Pennsylvania, USA
| | - Yi Rong
- Department of Radiation Oncology, Mayo Clinic Arizona, Phoenix, Arizona, USA
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21
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Maksoud S. The DNA Double-Strand Break Repair in Glioma: Molecular Players and Therapeutic Strategies. Mol Neurobiol 2022; 59:5326-5365. [PMID: 35696013 DOI: 10.1007/s12035-022-02915-2] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2021] [Accepted: 06/05/2022] [Indexed: 12/12/2022]
Abstract
Gliomas are the most frequent type of tumor in the central nervous system, which exhibit properties that make their treatment difficult, such as cellular infiltration, heterogeneity, and the presence of stem-like cells responsible for tumor recurrence. The response of this type of tumor to chemoradiotherapy is poor, possibly due to a higher repair activity of the genetic material, among other causes. The DNA double-strand breaks are an important type of lesion to the genetic material, which have the potential to trigger processes of cell death or cause gene aberrations that could promote tumorigenesis. This review describes how the different cellular elements regulate the formation of DNA double-strand breaks and their repair in gliomas, discussing the therapeutic potential of the induction of this type of lesion and the suppression of its repair as a control mechanism of brain tumorigenesis.
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Affiliation(s)
- Semer Maksoud
- Experimental Therapeutics and Molecular Imaging Unit, Department of Neurology, Neuro-Oncology Division, Massachusetts General Hospital, Harvard Medical School, Boston, MA, 02114, USA.
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22
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Initial results of a phase II trial of 18F-DOPA PET-guided re-irradiation for recurrent high-grade glioma. J Neurooncol 2022; 158:323-330. [PMID: 35583721 DOI: 10.1007/s11060-022-04011-w] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2022] [Accepted: 04/07/2022] [Indexed: 10/18/2022]
Abstract
PURPOSE In-field high-grade glioma (HGG) recurrence is a common challenge with limited treatment options, including re-irradiation. The radiotracer 3,4-dihydroxy-6-[18F]-fluoro-L-phenylalanine (18F-DOPA) crosses the blood brain barrier and demonstrates high uptake in tumor, but low uptake in normal tissue. This study investigated whether 18F-DOPA positron emission tomography (PET) and MRI guided re-irradiation for recurrent HGG may improve progression free survival (PFS). METHODS Adults with recurrent or progressive HGG previously treated with radiation were eligible. The primary endpoint was a 20% improvement from the historical control PFS at 3 months (PFS3) of 20% with systemic therapy alone. Re-RT dose was 35 Gy in 10 fractions. The target volume was MRI T1 contrast-enhancement defined tumor plus 18F-DOPA PET defined tumor. RESULTS Twenty patients completed treatment per protocol. Diagnosis was most commonly glioblastoma, IDH-wildtype (60%). MRI-defined volumes were expanded by a median 43% (0-436%) by utilizing 18F-DOPA PET. PFS3 was 85% (95% CI 63.2-95.8%), meeting the primary endpoint of PFS3 ≥ 40%. With 9.7 months median follow-up, 17 (85%) had progressed and 15 (75%) had died. Median OS from re-RT was 8.8 months. Failure following re-RT was within both the MRI and PET tumor volumes in 75%, MRI only in 13%, PET only in 0%, and neither in 13%. Four (20%) patients experienced grade 3 toxicity, including CNS necrosis (n = 2, both asymptomatic with bevacizumab initiation for radiographic findings), seizures (n = 1), fatigue (n = 1), and nausea (n = 1). No grade 4-5 toxicities were observed. CONCLUSION 18F-DOPA PET-guided re-irradiation for progressive high-grade glioma appears safe and promising for further investigation.
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23
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Stewart J, Sahgal A, Chan AKM, Soliman H, Tseng CL, Detsky J, Myrehaug S, Atenafu EG, Helmi A, Perry J, Keith J, Jane Lim-Fat M, Munoz DG, Zadeh G, Shultz DB, Das S, Coolens C, Alcaide-Leon P, Maralani PJ. Pattern of Recurrence of Glioblastoma Versus Grade 4 IDH-Mutant Astrocytoma Following Chemoradiation: A Retrospective Matched-Cohort Analysis. Technol Cancer Res Treat 2022; 21:15330338221109650. [PMID: 35762826 PMCID: PMC9247382 DOI: 10.1177/15330338221109650] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022] Open
Abstract
Background and Purpose: To quantitatively compare the recurrence
patterns of glioblastoma (isocitrate dehydrogenase-wild type) versus grade 4
isocitrate dehydrogenase-mutant astrocytoma (wild type isocitrate dehydrogenase
and mutant isocitrate dehydrogenase, respectively) following primary
chemoradiation. Materials and Methods: A retrospective matched
cohort of 22 wild type isocitrate dehydrogenase and 22 mutant isocitrate
dehydrogenase patients were matched by sex, extent of resection, and corpus
callosum involvement. The recurrent gross tumor volume was compared to the
original gross tumor volume and clinical target volume contours from
radiotherapy planning. Failure patterns were quantified by the incidence and
volume of the recurrent gross tumor volume outside the gross tumor volume and
clinical target volume, and positional differences of the recurrent gross tumor
volume centroid from the gross tumor volume and clinical target volume.
Results: The gross tumor volume was smaller for wild type
isocitrate dehydrogenase patients compared to the mutant isocitrate
dehydrogenase cohort (mean ± SD: 46.5 ± 26.0 cm3 vs
72.2 ± 45.4 cm3, P = .026). The recurrent gross
tumor volume was 10.7 ± 26.9 cm3 and 46.9 ± 55.0 cm3
smaller than the gross tumor volume for the same groups
(P = .018). The recurrent gross tumor volume extended outside
the gross tumor volume in 22 (100%) and 15 (68%) (P= .009) of
wild type isocitrate dehydrogenase and mutant isocitrate dehydrogenase patients,
respectively; however, the volume of recurrent gross tumor volume outside the
gross tumor volume was not significantly different (12.4 ± 16.1 cm3
vs 8.4 ± 14.2 cm3, P = .443). The recurrent gross
tumor volume centroid was within 5.7 mm of the closest gross tumor volume edge
for 21 (95%) and 22 (100%) of wild type isocitrate dehydrogenase and mutant
isocitrate dehydrogenase patients, respectively. Conclusion: The
recurrent gross tumor volume extended beyond the gross tumor volume less often
in mutant isocitrate dehydrogenase patients possibly implying a differential
response to chemoradiotherapy and suggesting isocitrate dehydrogenase status
might be used to personalize radiotherapy. The results require validation in
prospective randomized trials.
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Affiliation(s)
- James Stewart
- Department of Radiation Oncology, Sunnybrook 151192Odette Cancer Centre, Toronto, Ontario, Canada
| | - Arjun Sahgal
- Department of Radiation Oncology, Sunnybrook 151192Odette Cancer Centre, Toronto, Ontario, Canada.,Department of Radiation Oncology, 7938University of Toronto, Toronto, Ontario, Canada
| | - Aimee K M Chan
- Department of Medical Imaging, 7938University of Toronto, 71545Sunnybrook Health Sciences Centre, Toronto, Ontario, Canada
| | - Hany Soliman
- Department of Radiation Oncology, Sunnybrook 151192Odette Cancer Centre, Toronto, Ontario, Canada.,Department of Radiation Oncology, 7938University of Toronto, Toronto, Ontario, Canada
| | - Chia-Lin Tseng
- Department of Radiation Oncology, Sunnybrook 151192Odette Cancer Centre, Toronto, Ontario, Canada.,Department of Radiation Oncology, 7938University of Toronto, Toronto, Ontario, Canada
| | - Jay Detsky
- Department of Radiation Oncology, Sunnybrook 151192Odette Cancer Centre, Toronto, Ontario, Canada.,Department of Radiation Oncology, 7938University of Toronto, Toronto, Ontario, Canada
| | - Sten Myrehaug
- Department of Radiation Oncology, Sunnybrook 151192Odette Cancer Centre, Toronto, Ontario, Canada.,Department of Radiation Oncology, 7938University of Toronto, Toronto, Ontario, Canada
| | - Eshetu G Atenafu
- Department of Biostatistics, 7938University of Toronto, 7989University Health Network, Toronto, Ontario, Canada
| | - Ali Helmi
- Department of Medical Imaging, 7938University of Toronto, 71545Sunnybrook Health Sciences Centre, Toronto, Ontario, Canada
| | - James Perry
- Division of Neurology, 7938University of Toronto, 71545Sunnybrook Health Sciences Centre, Toronto, Ontario, Canada
| | - Julia Keith
- Department of Laboratory Medicine & Pathobiology, 7938University of Toronto, 71545Sunnybrook Health Sciences Centre, Toronto, Ontario, Canada
| | - Mary Jane Lim-Fat
- Division of Neurology, 7938University of Toronto, 71545Sunnybrook Health Sciences Centre, Toronto, Ontario, Canada
| | - David G Munoz
- Department of Pathology, 7938University of Toronto, St. Michael's Hospital, Toronto, Ontario, Canada
| | - Gelareh Zadeh
- Division of Neurosurgery, Department of Surgery, 7938University of Toronto, 7989University Health Network, Toronto, Ontario, Canada
| | - David B Shultz
- Department of Radiation Oncology, 7938University of Toronto, Toronto, Ontario, Canada.,Department of Radiation Oncology, 7989University Health Network, Toronto, Ontario, Canada
| | - Sunit Das
- Division of Neurosurgery, Department of Surgery, 7938University of Toronto, St. Michael's Hospital, Toronto, Ontario, Canada
| | - Catherine Coolens
- Department of Radiation Oncology, 7938University of Toronto, Toronto, Ontario, Canada.,Department of Radiation Oncology, 7989University Health Network, Toronto, Ontario, Canada
| | - Paula Alcaide-Leon
- Department of Medical Imaging, 7938University of Toronto, 7989University Health Network, Toronto, Ontario, Canada
| | - Pejman Jabehdar Maralani
- Department of Medical Imaging, 7938University of Toronto, 71545Sunnybrook Health Sciences Centre, Toronto, Ontario, Canada
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24
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Glas M, Ballo MT, Bomzon Z, Urman N, Levi S, Lavy-Shahaf G, Jeyapalan S, Sio TT, DeRose PM, Misch M, Taillibert S, Ram Z, Hottinger AF, Easaw J, Kim CY, Mohan S, Stupp R. The Impact of Tumor Treating Fields on Glioblastoma Progression Patterns. Int J Radiat Oncol Biol Phys 2021; 112:1269-1278. [PMID: 34963556 DOI: 10.1016/j.ijrobp.2021.12.152] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2021] [Revised: 12/06/2021] [Accepted: 12/15/2021] [Indexed: 11/24/2022]
Abstract
BACKGROUND Tumor-treating fields (TTFields) is an antimitotic treatment modality that interferes with glioblastoma cell division and organelle assembly by delivering low-intensity alternating electric fields to the tumor. A previous analysis from the pivotal EF-14 trial demonstrated a clear correlation between TTFields dose-density at the tumor bed and survival in patients treated with TTFields. This study tests the hypothesis that the antimitotic effects of TTFields result in measurable changes in the location and patterns of progression of newly diagnosed glioblastoma (nGBM) patients. METHODS MRI images of 428 nGBM patients that participated in the pivotal EF-14 trial were reviewed and the rates at which distant progression occurred in the TTFields treatment and control arm were compared. Realistic head models of 252 TTFields treated patients were created and TTFields intensity distributions were calculated using a Finite Elements Method. TTFields dose was calculated within regions of the tumor bed and normal brain and its relationship with progression determined. RESULTS Distant progression was frequently observed in the TTFields-treated arm, and distant lesions in the TTFields-treated arm appeared at larger distances from the primary lesion than in the control arm. Distant progression correlated with improved clinical outcome in the TTFields patients, with no such correlation observed in the controls. Areas of normal brain that remained normal were exposed to higher TTFields doses compared to normal brain that subsequently exhibited neoplastic progression. Additionally, the average dose to areas of enhancing tumor that returned to normal was significantly higher than in the areas of normal brain that progressed to enhancing tumor. CONCLUSIONS There was a direct correlation between TTFields dose distribution and tumor response, confirming the therapeutic activity of TTFields and the rationale for optimizing array placement to maximize TTFields dose in areas at highest risk of progression, as well as array layout adaptation after progression.
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Affiliation(s)
- Martin Glas
- Division of Clinical Neurooncology, Dept. of Neurology and German Cancer Consortium (DKTK) Partner Site, University Hospital Essen, University Duisburg-Essen, Essen, Germany
| | - Matthew T Ballo
- Department of Radiation Oncology, West Cancer Center & Research Institute, Memphis, TN.
| | | | | | | | | | | | - Terence T Sio
- Department of Radiation Oncology, Mayo Clinic, Phoenix, AZ
| | - Paul M DeRose
- Department of Radiation Oncology, Methodist Dallas Medical Center, Dallas, TX
| | - Martin Misch
- Department of Neurosurgery, University Hospital Charité, Berlin, Germany
| | - Sophie Taillibert
- Department of Neurology, Hôpital Pitié-Salpêtrière, APHP, University Pierre et Marie Curie Paris VI, Paris, France
| | - Zvi Ram
- Department of Neurosurgery, Tel Aviv Medical Center, Tel Aviv, Israel and Tel Aviv University School of Medicine
| | - Andreas F Hottinger
- Departments of Clinical Neurosciences and Oncology, Centre Hospitalier Universitaire Vaudois, Lausanne, Switzerland
| | | | - Chae-Yong Kim
- Seoul National University Bundang Hospital, Seoul National University College of Medicine, Korea
| | - Suyash Mohan
- Division of Neuroradiology, Department of Radiology, Perelman School of Medicine at the University of Pennsylvania, Philadelphia, PA
| | - Roger Stupp
- Lou and Jean Malnati Brain Tumor Institute of the Robert H. Lurie Comprehensive Cancer Center of Northwestern University, Departments of Neurological Surgery, Neurology and Medicine (Hem/Onc), Northwestern Medicine, Chicago, IL
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25
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Antoni D, Feuvret L, Biau J, Robert C, Mazeron JJ, Noël G. Radiation guidelines for gliomas. Cancer Radiother 2021; 26:116-128. [PMID: 34953698 DOI: 10.1016/j.canrad.2021.08.006] [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] [Indexed: 12/28/2022]
Abstract
Gliomas are the most frequent primary brain tumour. The proximity of organs at risk, the infiltrating nature, and the radioresistance of gliomas have to be taken into account in the choice of prescribed dose and technique of radiotherapy. The management of glioma patients is based on clinical factors (age, KPS) and tumour characteristics (histology, molecular biology, tumour location), and strongly depends on available and associated treatments, such as surgery, radiation therapy, and chemotherapy. The knowledge of molecular biomarkers is currently essential, they are increasingly evolving as additional factors that facilitate diagnostics and therapeutic decision-making. We present the update of the recommendations of the French society for radiation oncology on the indications and the technical procedures for performing radiation therapy in patients with gliomas.
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Affiliation(s)
- D Antoni
- Service de radiothérapie, institut cancérologie Strasbourg Europe (ICANS), 17, rue Albert-Calmette, 67200 Strasbourg cedex, France.
| | - L Feuvret
- Service de radiothérapie, CHU Pitié-Salpêtrière, Assistance publique-hôpitaux de Paris (AP-HP), 47-83, boulevard de l'Hôpital, 75013 Paris, France
| | - J Biau
- Département universitaire de radiothérapie, centre Jean-Perrin, Unicancer, 58, rue Montalembert, BP 392, 63011 Clermont-Ferrand cedex 01, France
| | - C Robert
- Département de radiothérapie, institut de cancérologie Gustave-Roussy, 39, rue Camille-Desmoulin, 94800 Villejuif, France
| | - J-J Mazeron
- Service de radiothérapie, CHU Pitié-Salpêtrière, Assistance publique-hôpitaux de Paris (AP-HP), 47-83, boulevard de l'Hôpital, 75013 Paris, France
| | - G Noël
- Service de radiothérapie, institut cancérologie Strasbourg Europe (ICANS), 17, rue Albert-Calmette, 67200 Strasbourg cedex, France
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26
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Lucas JT, Tinkle CL, Huang J, Onar-Thomas A, Srinivasan S, Tumlin P, Becksfort JB, Klimo P, Boop FA, Robinson GW, Orr BA, Harreld JH, Krasin MJ, Northcott PA, Ellison DW, Gajjar A, Merchant TE. Revised clinical and molecular risk strata define the incidence and pattern of failure in medulloblastoma following risk-adapted radiotherapy and dose-intensive chemotherapy: results from a phase III multi-institutional study. Neuro Oncol 2021; 24:1166-1175. [PMID: 34894262 PMCID: PMC9248404 DOI: 10.1093/neuonc/noab284] [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] [Indexed: 12/13/2022] Open
Abstract
BACKGROUND We characterize the patterns of progression across medulloblastoma (MB) clinical risk and molecular subgroups from SJMB03, a Phase III clinical trial. METHODS One hundred and fifty-five pediatric patients with newly diagnosed MB were treated on a prospective, multi-center phase III trial of adjuvant radiotherapy (RT) and dose-intense chemotherapy with autologous stem cell transplant. Craniospinal radiotherapy to 23.4 Gy (average risk, AR) or 36-39.6 Gy (high risk, HR) was followed by conformal RT with a 1 cm clinical target volume to a cumulative dose of 55.8 Gy. Subgroup was determined using 450K DNA methylation. Progression was classified anatomically (primary site failure (PSF) +/- distant failure (DF), or isolated DF), and dosimetrically. RESULTS Thirty-two patients have progressed (median follow-up 11.0 years (range, 0.3-16.5 y) for patients without progression). Anatomic failure pattern differed by clinical risk (P = .0054) and methylation subgroup (P = .0034). The 5-year cumulative incidence (CI) of PSF was 5.1% and 5.6% in AR and HR patients, respectively (P = .92), and did not differ across subgroups (P = .15). 5-year CI of DF was 7.1% vs. 28.1% for AR vs. HR (P = .0003); and 0% for WNT, 15.3% for SHH, 32.9% for G3, and 9.7% for G4 (P = .0024). Of 9 patients with PSF, 8 were within the primary site RT field and 4 represented SHH tumors. CONCLUSIONS The low incidence of PSF following conformal primary site RT is comparable to prior studies using larger primary site or posterior fossa boost volumes. Distinct anatomic failure patterns across MB subgroups suggest subgroup-specific treatment strategies should be considered.
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Affiliation(s)
- John T Lucas
- Corresponding Author: John T. Lucas Jr., MD, MS, Department of Radiation Oncology, St. Jude Children’s Research Hospital, 262 Danny Thomas Place, MS 210, Memphis, TN 38105-3678, USA ()
| | - Christopher L Tinkle
- Corresponding Author: Christopher L. Tinkle, MD, PhD, Department of Radiation Oncology, St. Jude Children’s Research Hospital, 262 Danny Thomas Place, MS 210, Memphis, TN 38105-3678, USA ()
| | - Jie Huang
- Department of Biostatistics, St. Jude Children’s Research Hospital, Memphis, Tennessee, USA
| | - Arzu Onar-Thomas
- Department of Biostatistics, St. Jude Children’s Research Hospital, Memphis, Tennessee, USA
| | | | - Parker Tumlin
- Present affiliation: West Virginia University, Morgantown, West Virginia, 26506, USA
| | - Jared B Becksfort
- Department of Radiation Oncology, St. Jude Children’s Research Hospital, Memphis, Tennessee, USA
| | - Paul Klimo
- Department of Surgery, St. Jude Children’s Research Hospital, Memphis, Tennessee, USA
| | - Frederick A Boop
- Department of Surgery, St. Jude Children’s Research Hospital, Memphis, Tennessee, USA
| | - Giles W Robinson
- Department of Oncology, St. Jude Children’s Research Hospital, Memphis, Tennessee, USA
| | - Brent A Orr
- Department of Pathology, St. Jude Children’s Research Hospital, Memphis, Tennessee, USA
| | - Julie H Harreld
- Department of Diagnostic Imaging, St. Jude Children’s Research Hospital, Memphis, Tennessee, USA
| | - Matthew J Krasin
- Department of Radiation Oncology, St. Jude Children’s Research Hospital, Memphis, Tennessee, USA
| | - Paul A Northcott
- Department of Developmental Neurobiology, St. Jude Children’s Research Hospital, Memphis, Tennessee, USA
| | - David W Ellison
- Department of Pathology, St. Jude Children’s Research Hospital, Memphis, Tennessee, USA
| | - Amar Gajjar
- Department of Oncology, St. Jude Children’s Research Hospital, Memphis, Tennessee, USA
| | - Thomas E Merchant
- Department of Radiation Oncology, St. Jude Children’s Research Hospital, Memphis, Tennessee, USA
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27
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Rahman R, Sulman E, Haas-Kogan D, Cagney DN. Update on Radiation Therapy for Central Nervous System Tumors. Hematol Oncol Clin North Am 2021; 36:77-93. [PMID: 34711456 DOI: 10.1016/j.hoc.2021.08.006] [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] [Indexed: 12/25/2022]
Abstract
Radiation therapy has long been a critical modality of treatment of patients with central nervous system tumors, including primary brain tumors, brain metastases, and meningiomas. Advances in radiation technology and delivery have allowed for more precise treatment to optimize patient outcomes and minimize toxicities. Improved understanding of the molecular underpinnings of brain tumors and normal brain tissue response to radiation will allow for continued refinement of radiation treatment approaches to improve clinical outcomes for brain tumor patients. With continued advances in precision and delivery, radiation therapy will continue to be an important modality to achieve optimal outcomes of brain tumor patients.
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Affiliation(s)
- Rifaquat Rahman
- Department of Radiation Oncology, Dana-Farber/Brigham and Women's Cancer Center, Harvard Medical School, 75 Francis Street, ASB1-L2, Boston, MA 02115, USA
| | - Erik Sulman
- Department of Radiation Oncology, New York University Grossman School of Medicine, 160 East 34th Street, New York, NY 10016, USA
| | - Daphne Haas-Kogan
- Department of Radiation Oncology, Dana-Farber/Brigham and Women's Cancer Center, Harvard Medical School, 75 Francis Street, ASB1-L2, Boston, MA 02115, USA
| | - Daniel N Cagney
- Department of Radiation Oncology, Dana-Farber/Brigham and Women's Cancer Center, Harvard Medical School, 75 Francis Street, ASB1-L2, Boston, MA 02115, USA.
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28
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DNA Damage Response in Glioblastoma: Mechanism for Treatment Resistance and Emerging Therapeutic Strategies. ACTA ACUST UNITED AC 2021; 27:379-385. [PMID: 34570452 DOI: 10.1097/ppo.0000000000000540] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
ABSTRACT Glioblastoma (GBM) is an intrinsically treatment-resistant tumor and has been shown to upregulate DNA damage response (DDR) components after treatment. DNA damage response signaling mediates treatment resistance by promoting cell cycle arrest in order to allow for DNA damage repair and avoid mitotic catastrophe. Therefore, targeting the DDR pathway is an attractive strategy to combat treatment resistance in GBM. In this review, we discuss the different DDR pathways and then summarize the current preclinical evidence for DDR inhibitors in GBM, as well as completed and ongoing clinical trials.
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29
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Degorre C, Tofilon P, Camphausen K, Mathen P. Bench to bedside radiosensitizer development strategy for newly diagnosed glioblastoma. Radiat Oncol 2021; 16:191. [PMID: 34583727 PMCID: PMC8480070 DOI: 10.1186/s13014-021-01918-y] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2021] [Accepted: 09/15/2021] [Indexed: 11/10/2022] Open
Abstract
Glioblastoma is the most common primary brain malignancy and carries with it a poor prognosis. New agents are urgently needed, however nearly all Phase III trials of GBM patients of the past 25 years have failed to demonstrate improvement in outcomes. In 2019, the National Cancer Institute Clinical Trials and Translational Research Advisory Committee (CTAC) Glioblastoma Working Group (GBM WG) identified 5 broad areas of research thought to be important in the development of new herapeutics for GBM. Among those was optimizing radioresponse for GBM in situ. One such strategy to increase radiation efficacy is the addition of a radiosensitizer to improve the therapeutic ratio by enhancing tumor sensitivity while ideally having minimal to no effect on normal tissue. Historically the majority of trials using radiosensitizers have been unsuccessful, but they provide important guidance in what is required to develop agents more efficiently. Improved target selection is essential for a drug to provide maximal benefit, and once that target is identified it must be validated through pre-clinical studies. Careful selection of appropriate in vitro and in vivo models to demonstrate increased radiosensitivity and suitable bioavailability are then necessary to prove that a drug warrants advancement to clinical investigation. Once investigational agents are validated pre-clinically, patient trials require consistency both in terms of planning study design as well as reporting efficacy and toxicity in order to assess the potential benefit of the drug. Through this paper we hope to outline strategies for developing effective radiosensitizers against GBM using as models the examples of XPO1 inhibitors and HDAC inhibitors developed from our own lab.
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Affiliation(s)
- Charlotte Degorre
- Radiation Oncology Branch, National Cancer Institute, Bldg. 10, Rm B2-3500, 9000 Rockville Pike, Bethesda, MD, 20892, USA
| | - Philip Tofilon
- Radiation Oncology Branch, National Cancer Institute, Bldg. 10, Rm B2-3500, 9000 Rockville Pike, Bethesda, MD, 20892, USA
| | - Kevin Camphausen
- Radiation Oncology Branch, National Cancer Institute, Bldg. 10, Rm B2-3500, 9000 Rockville Pike, Bethesda, MD, 20892, USA
| | - Peter Mathen
- Radiation Oncology Branch, National Cancer Institute, Bldg. 10, Rm B2-3500, 9000 Rockville Pike, Bethesda, MD, 20892, USA.
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30
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Takahashi J, Nagasawa S, Doi M, Takahashi M, Narita Y, Yamamoto J, Ikemoto MJ, Iwahashi H. In Vivo Study of the Efficacy and Safety of 5-Aminolevulinic Radiodynamic Therapy for Glioblastoma Fractionated Radiotherapy. Int J Mol Sci 2021; 22:ijms22189762. [PMID: 34575921 PMCID: PMC8470662 DOI: 10.3390/ijms22189762] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2021] [Revised: 09/02/2021] [Accepted: 09/03/2021] [Indexed: 12/20/2022] Open
Abstract
To treat malignant glioma, standard fractionated radiotherapy (RT; 60 Gy/30 fractions over 6 weeks) was performed post-surgery in combination with temozolomide to improve overall survival. Malignant glioblastoma recurrence rate is extremely high, and most recurrent tumors originate from the excision cavity in the high-dose irradiation region. In our previous study, protoporphyrin IX physicochemically enhanced reactive oxygen species generation by ionizing radiation and combined treatment with 5-aminolevulinic acid (5-ALA) and ionizing radiation, while radiodynamic therapy (RDT) improved tumor growth suppression in vivo in a melanoma mouse model. We examined the effect of 5-ALA RDT on the standard fractionated RT protocol using U251MG- or U87MG-bearing mice. 5-ALA was orally administered at 60 or 120 mg/kg, 4 h prior to irradiation. In both models, combined treatment with 5-ALA slowed tumor progression and promoted regression compared to treatment with ionizing radiation alone. The standard fractionated RT protocol of 60 Gy in 30 fractions with oral administration of 120 and 240 mg/kg 5-ALA, the human equivalent dose of photodynamic diagnosis, revealed no significant increase in toxicity to normal skin or brain tissue compared to ionizing radiation alone. Thus, RDT is expected to enhance RT treatment of glioblastoma without severe toxicity under clinically feasible conditions.
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Affiliation(s)
- Junko Takahashi
- Graduate School of Information, Production and Systems, Waseda University, Fukuoka 808-0135, Japan
- Health and Medical Research Institute, National Institute of Advanced Industrial Science and Technology (AIST), Ibaraki 305-8566, Japan;
- Correspondence: ; Tel.: +81-936-92-5154
| | - Shinsuke Nagasawa
- Department of Radiology, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, Kyoto 602-8566, Japan;
| | - Motomichi Doi
- Biomedical Research Institute, National Institute of Advanced Industrial Science and Technology (AIST), Ibaraki 305-8566, Japan;
| | - Masamichi Takahashi
- Department of Neurosurgery and Neuro-Oncology, National Cancer Center Hospital, Tokyo 104-0045, Japan; (M.T.); (Y.N.)
| | - Yoshitaka Narita
- Department of Neurosurgery and Neuro-Oncology, National Cancer Center Hospital, Tokyo 104-0045, Japan; (M.T.); (Y.N.)
| | - Junkoh Yamamoto
- Department of Neurosurgery, University of Occupational and Environmental Health, Fukuoka 807-8555, Japan;
| | - Mitsushi J. Ikemoto
- Health and Medical Research Institute, National Institute of Advanced Industrial Science and Technology (AIST), Ibaraki 305-8566, Japan;
| | - Hitoshi Iwahashi
- The United Graduate School of Agricultural Science, Gifu University, Gifu 501-1193, Japan;
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31
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Laack NN, Pafundi D, Anderson SK, Kaufmann T, Lowe V, Hunt C, Vogen D, Yan E, Sarkaria J, Brown P, Kizilbash S, Uhm J, Ruff M, Zakhary M, Zhang Y, Seaberg M, Wan Chan Tseung HS, Kabat B, Kemp B, Brinkmann D. Initial Results of a Phase 2 Trial of 18F-DOPA PET-Guided Dose-Escalated Radiation Therapy for Glioblastoma. Int J Radiat Oncol Biol Phys 2021; 110:1383-1395. [PMID: 33771703 DOI: 10.1016/j.ijrobp.2021.03.032] [Citation(s) in RCA: 28] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2020] [Revised: 02/21/2021] [Accepted: 03/16/2021] [Indexed: 11/28/2022]
Abstract
PURPOSE Our previous work demonstrated that 3,4-dihydroxy-6-[18F]-fluoro-L-phenylalanine (18F-DOPA) positron emission tomography (PET) is sensitive and specific for identifying regions of high density and biologically aggressive glioblastoma. The purpose of this prospective phase 2 study was to determine the safety and efficacy of biologic-guided, dose-escalated radiation therapy (DERT) using 18F-DOPA PET in patients with glioblastoma. METHODS AND MATERIALS Patients with newly diagnosed, histologically confirmed glioblastoma aged ≥18 years without contraindications to 18F-DOPA were eligible. Target volumes included 51, 60, and 76 Gy in 30 fractions with a simultaneous integrated boost, and concurrent and adjuvant temozolomide for 6 months. 18F-DOPA PET imaging was used to guide DERT. The study was designed to detect a true progression-free survival (PFS) at 6 months (PFS6) rate ≥72.5% in O6-methylguanine methyltransferase (MGMT) unmethylated patients (DE-Un), with an overall significance level (alpha) of 0.20 and a power of 80%. Kaplan-Meier analysis was performed for PFS and overall survival (OS). Historical controls (HCs) included 139 patients (82 unmethylated) treated on prospective clinical trials or with standard RT at our institution. Toxicities were evaluated with Common Terminology Criteria for Adverse Events v4.0. RESULTS Between January 2014 and December 2018, 75 evaluable patients were enrolled (39 DE-Un, 24 methylated [DE-Mth], and 12 indeterminate). PFS6 for DE-Un was 79.5% (95% confidence interval, 63.1%-90.1%). Median PFS was longer for DE-Un patients compared with historical controls (8.7 months vs 6.6 months; P = .017). OS was similarly longer, but the difference was not significant (16.0 vs 13.5 months; P = .13). OS was significantly improved for DE-Mth patients compared with HC-Mth (35.5 vs 23.3 months; P = .049) despite nonsignificant improvement in PFS (10.7 vs 9.0 months; P = .26). Grade 3 central nervous system necrosis occurred in 13% of patients, but treatment with bevacizumab improved symptoms in all cases. CONCLUSIONS 18F-DOPA PET-guided DERT appears to be safe, and it significantly improves PFS in MGMT unmethylated glioblastoma. OS is significantly improved in MGMT methylated patients. Further investigation of 18F-DOPA PET biologic guided DERT for glioblastoma is warranted.
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Affiliation(s)
| | - Deanna Pafundi
- Department of Radiation Oncology, Mayo Clinic, Jacksonville, Florida
| | | | | | - Val Lowe
- Department of Radiology, Mayo Clinic, Rochester, Minnesota
| | | | - Diane Vogen
- Department of Radiation Oncology, Mayo Clinic, Rochester, Minnesota
| | - Elizabeth Yan
- Department of Radiation Oncology, Mayo Clinic, Rochester, Minnesota
| | - Jann Sarkaria
- Department of Radiation Oncology, Mayo Clinic, Rochester, Minnesota
| | - Paul Brown
- Department of Radiation Oncology, Mayo Clinic, Rochester, Minnesota
| | - Sani Kizilbash
- Department of Radiation Oncology, Mayo Clinic, Rochester, Minnesota
| | - Joon Uhm
- Department of Medical Oncology, Mayo Clinic, Rochester, Minnesota
| | - Michael Ruff
- Deptartment of Neurology, Mayo Clinic, Rochester, Minnesota
| | - Mark Zakhary
- Department of Radiation Oncology, University of Maryland, Baltimore, Maryland
| | - Yan Zhang
- Department of Research, Mayo Clinic, Jacksonville, Florida
| | | | | | - Brian Kabat
- Quantitative Health Sciences, Mayo Clinic, Rochester, Minnesota
| | - Bradley Kemp
- Department of Radiology, Mayo Clinic, Rochester, Minnesota
| | - Debra Brinkmann
- Department of Radiation Oncology, Mayo Clinic, Rochester, Minnesota
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Effects of the DRD2/3 antagonist ONC201 and radiation in glioblastoma. Radiother Oncol 2021; 161:140-147. [PMID: 34097975 DOI: 10.1016/j.radonc.2021.05.027] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2020] [Revised: 05/23/2021] [Accepted: 05/30/2021] [Indexed: 11/23/2022]
Abstract
BACKGROUND Glioblastoma (GBM) is the deadliest of all brain cancers in adults. The current standard-of-care is surgery followed by radiotherapy and temozolomide, leading to a median survival time of only 15 months. GBM are organized hierarchically with a small number of glioma-initiating cells (GICs), responsible for therapy resistance and tumor recurrence, suggesting that targeting GICs could improve treatment response. ONC201 is a first-in-class anti-tumor agent with clinical efficacy in some forms of high-grade gliomas. Here we test its efficacy against GBM in combination with radiation. METHODS Using patient-derived GBM lines and mouse models of GBM we test the effects of radiation and ONC201 on GBM self-renewalin vitro and survivalin vivo.A possible resistance mechanism is investigated using RNA-Sequencing. RESULTS Treatment of GBM cells with ONC201 reduced self-renewal, clonogenicity and cell viabilityin vitro. ONC201 exhibited anti-tumor effects on radioresistant GBM cells indicated by reduced self-renewal in secondary and tertiary glioma spheres. Combined treatment of ONC201 and radiation prolonged survival in syngeneic and patient-derived orthotopic xenograft mouse models of GBM. Subsequent transcriptome analyses after combined treatment revealed shifts in gene expression signatures related to quiescent GBM populations, GBM plasticity, and GBM stem cells. CONCLUSIONS Our findings suggest that combined treatment with the DRD2/3 antagonist ONC201 and radiation improves the efficacy of radiation against GBMin vitroandin vivothrough suppression of GICs without increasing toxicity in mouse models of GBM. A clinical assessment of this novel combination therapy against GBM is further warranted.
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Almahariq MF, Quinn TJ, Arden JD, Roskos PT, Wilson GD, Marples B, Grills IS, Chen PY, Krauss DJ, Chinnaiyan P, Dilworth JT. Pulsed radiation therapy for the treatment of newly diagnosed glioblastoma. Neuro Oncol 2021; 23:447-456. [PMID: 32658268 DOI: 10.1093/neuonc/noaa165] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023] Open
Abstract
BACKGROUND Pulsed radiation therapy (PRT) has shown effective tumor control and superior normal-tissue sparing ability compared with standard radiotherapy (SRT) in preclinical models and retrospective clinical series. This is the first prospective trial to investigate PRT in the treatment of patients with newly diagnosed glioblastoma (GBM). METHODS This is a single-arm, prospective study. Patients with newly diagnosed GBM underwent surgery, followed by 60 Gy of PRT with concurrent temozolomide (TMZ). Each day, a 2-Gy fraction was divided into ten 0.2-Gy pulses, separated by 3-minute intervals. Patients received maintenance TMZ. Neurocognitive function (NCF) and quality of life (QoL) were monitored for 2 years using the Hopkins Verbal Learning Test‒Revised and the European Organisation for Research and Treatment of Cancer QLQ-C30 QoL questionnaire. Change in NCF was evaluated based on a minimal clinically important difference (MCID) threshold of 0.5 standard deviation. RESULTS Twenty patients were enrolled with a median follow-up of 21 months. Median age was 60 years. Forty percent underwent subtotal resection, and 60% underwent gross total resection. One patient had an isocitrate dehydrogenase (IDH)-mutated tumor. Median progression-free survival (PFS) and overall survival (OS) were 10.7 and 20.9 months, respectively. In a post-hoc comparison, median OS for the prospective cohort was longer, compared with a matched cohort receiving SRT (20.9 vs 14 mo, P = 0.042). There was no decline in QoL, and changes in NCF scores did not meet the threshold of an MCID. CONCLUSIONS Treatment of newly diagnosed GBM with PRT is feasible and produces promising effectiveness while maintaining neurocognitive function and QoL. Validation of our results in a larger prospective trial warrants consideration.
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Affiliation(s)
| | - Thomas J Quinn
- Department of Radiation Oncology, Beaumont Health, Royal Oak, Michigan
| | - Jessica D Arden
- Department of Radiation Oncology, Beaumont Health, Royal Oak, Michigan
| | - P T Roskos
- Neuropsychology Services, Department of Physical Medicine and Rehabilitation, Beaumont Health, Dearborn, Michigan
| | - George D Wilson
- Department of Radiation Oncology, Beaumont Health, Royal Oak, Michigan
- Oakland University William Beaumont School of Medicine, Auburn Hills, Michigan
| | - Brian Marples
- Department of Radiation Oncology, University of Rochester, Rochester, New York
| | - Inga S Grills
- Department of Radiation Oncology, Beaumont Health, Royal Oak, Michigan
- Oakland University William Beaumont School of Medicine, Auburn Hills, Michigan
| | - Peter Y Chen
- Department of Radiation Oncology, Beaumont Health, Royal Oak, Michigan
- Oakland University William Beaumont School of Medicine, Auburn Hills, Michigan
| | - Daniel J Krauss
- Oakland University William Beaumont School of Medicine, Auburn Hills, Michigan
| | - Prakash Chinnaiyan
- Oakland University William Beaumont School of Medicine, Auburn Hills, Michigan
| | - Joshua T Dilworth
- Oakland University William Beaumont School of Medicine, Auburn Hills, Michigan
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The Importance of Tumor Stem Cells in Glioblastoma Resistance to Therapy. Int J Mol Sci 2021; 22:ijms22083863. [PMID: 33917954 PMCID: PMC8068366 DOI: 10.3390/ijms22083863] [Citation(s) in RCA: 30] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2021] [Revised: 04/02/2021] [Accepted: 04/06/2021] [Indexed: 12/16/2022] Open
Abstract
Glioblastoma (GBM) is known to be the most common and lethal primary malignant brain tumor. Therapies against this neoplasia have a high percentage of failure, associated with the survival of self-renewing glioblastoma stem cells (GSCs), which repopulate treated tumors. In addition, despite new radical surgery protocols and the introduction of new anticancer drugs, protocols for treatment, and technical advances in radiotherapy, no significant improvement in the survival rate for GBMs has been realized. Thus, novel antitarget therapies could be used in conjunction with standard radiochemotherapy approaches. Targeted therapy, indeed, may address specific targets that play an essential role in the proliferation, survival, and invasiveness of GBM cells, including numerous molecules involved in signal transduction pathways. Significant cellular heterogeneity and the hierarchy with GSCs showing a therapy-resistant phenotype could explain tumor recurrence and local invasiveness and, therefore, may be a target for new therapies. Therefore, the forced differentiation of GSCs may be a promising new approach in GBM treatment. This article provides an updated review of the current standard and experimental therapies for GBM, as well as an overview of the molecular characteristics of GSCs, the mechanisms that activate resistance to current treatments, and a new antitumor strategy for treating GSCs for use as therapy.
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Seidlitz A, Beuthien-Baumann B, Löck S, Jentsch C, Platzek I, Zöphel K, Linge A, Kotzerke J, Petr J, van den Hoff J, Steinbach J, Krex D, Schmitz-Schackert G, Falk M, Baumann M, Krause M. Final Results of the Prospective Biomarker Trial PETra: [ 11C]-MET-Accumulation in Postoperative PET/MRI Predicts Outcome after Radiochemotherapy in Glioblastoma. Clin Cancer Res 2021; 27:1351-1360. [PMID: 33376095 DOI: 10.1158/1078-0432.ccr-20-1775] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2020] [Revised: 07/24/2020] [Accepted: 12/22/2020] [Indexed: 11/16/2022]
Abstract
PURPOSE This prospective trial investigates the association of time to recurrence (TTR) in glioblastoma with [11C]methionine (MET) tracer uptake before postoperative radiochemotherapy (RCT) aiming to guide radiotherapy boost regions. EXPERIMENTAL DESIGN Between 2013 and 2016, 102 patients with glioblastoma were recruited. RCT was performed with concurrent and adjuvant temozolomide to a total dose of 60 Gy. Tumor residues in postresection PET and MRI were together defined as gross tumor volumes for radiotherapy treatment planning. [11C]methionine (MET)-PET/MRI was performed before RCT and at each follow-up. RESULTS The primary hypothesis of a longer TTR for patients without increased tracer accumulation in postoperative MET-PET was confirmed in 89 patients. With 18.9 months (95% confidence interval, 9.3-28.5 months), median TTR was significantly (P < 0.001) longer for patients without (n = 29, 32.6%) as compared with 6.3 months (3.6-8.9) for patients with MET accumulation (n = 60, 67.4%) in pre-RCT PET. Although MRI often did not detect all PET-positive regions, an unfavorable impact of residual tumor in postsurgical MRI (n = 38, 42.7%) on TTR was observed [4.6 (4.2-5.1) vs. 15.5 months (6.0-24.9), P < 0.001]. Significant multivariable predictors for TTR were MRI positivity, PET-positive volume, and O6-methylguanine DNA methyltransferase (MGMT) hypermethylation. CONCLUSIONS Postsurgical amino acid PET has prognostic value for TTR after RCT in glioblastoma. Because of the added value of the metabolic beyond the pure structural information, it should complement MRI in radiotherapy planning if available with reasonable effort, at least in the context of maximal therapy. Furthermore, the spatial correlation of regions of recurrence with PET-positive volumes could provide a bioimaging basis for further trials, for example, testing local radiation dose escalation.
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Affiliation(s)
- Annekatrin Seidlitz
- Department of Radiation Oncology, Faculty of Medicine and University Hospital Carl Gustav Carus, Technische Universität Dresden, Dresden, Germany. .,National Center for Tumor Diseases (NCT), Partner Site Dresden, Germany: German Cancer Research Center (DKFZ), Heidelberg, Germany; Faculty of Medicine and University Hospital Carl Gustav Carus, Technische Universität Dresden, Dresden, Germany, and Helmholtz Association/Helmholtz-Zentrum Dresden - Rossendorf (HZDR), Dresden, Germany.,OncoRay - National Center for Radiation Research in Oncology, Faculty of Medicine and University Hospital Carl Gustav Carus, Technische Universität Dresden, Helmholtz-Zentrum Dresden - Rossendorf, Dresden, Germany.,German Cancer Research Center (DKFZ), Heidelberg and German Cancer Consortium (DKTK) partner site, Dresden, Germany
| | - Bettina Beuthien-Baumann
- Department of Nuclear Medicine, Faculty of Medicine and University Hospital Carl Gustav Carus, Technische Universität Dresden, Dresden, Germany.,German Cancer Research Center (DKFZ), Department of Radiology, Heidelberg, Germany
| | - Steffen Löck
- Department of Radiation Oncology, Faculty of Medicine and University Hospital Carl Gustav Carus, Technische Universität Dresden, Dresden, Germany.,OncoRay - National Center for Radiation Research in Oncology, Faculty of Medicine and University Hospital Carl Gustav Carus, Technische Universität Dresden, Helmholtz-Zentrum Dresden - Rossendorf, Dresden, Germany.,German Cancer Research Center (DKFZ), Heidelberg and German Cancer Consortium (DKTK) partner site, Dresden, Germany
| | - Christina Jentsch
- Department of Radiation Oncology, Faculty of Medicine and University Hospital Carl Gustav Carus, Technische Universität Dresden, Dresden, Germany.,National Center for Tumor Diseases (NCT), Partner Site Dresden, Germany: German Cancer Research Center (DKFZ), Heidelberg, Germany; Faculty of Medicine and University Hospital Carl Gustav Carus, Technische Universität Dresden, Dresden, Germany, and Helmholtz Association/Helmholtz-Zentrum Dresden - Rossendorf (HZDR), Dresden, Germany.,OncoRay - National Center for Radiation Research in Oncology, Faculty of Medicine and University Hospital Carl Gustav Carus, Technische Universität Dresden, Helmholtz-Zentrum Dresden - Rossendorf, Dresden, Germany
| | - Ivan Platzek
- Institute of Radiology, Faculty of Medicine and University Hospital Carl Gustav Carus, Technische Universität Dresden, Dresden, Germany
| | - Klaus Zöphel
- Department of Nuclear Medicine, Faculty of Medicine and University Hospital Carl Gustav Carus, Technische Universität Dresden, Dresden, Germany
| | - Annett Linge
- Department of Radiation Oncology, Faculty of Medicine and University Hospital Carl Gustav Carus, Technische Universität Dresden, Dresden, Germany.,National Center for Tumor Diseases (NCT), Partner Site Dresden, Germany: German Cancer Research Center (DKFZ), Heidelberg, Germany; Faculty of Medicine and University Hospital Carl Gustav Carus, Technische Universität Dresden, Dresden, Germany, and Helmholtz Association/Helmholtz-Zentrum Dresden - Rossendorf (HZDR), Dresden, Germany.,OncoRay - National Center for Radiation Research in Oncology, Faculty of Medicine and University Hospital Carl Gustav Carus, Technische Universität Dresden, Helmholtz-Zentrum Dresden - Rossendorf, Dresden, Germany.,German Cancer Research Center (DKFZ), Heidelberg and German Cancer Consortium (DKTK) partner site, Dresden, Germany
| | - Jörg Kotzerke
- Department of Nuclear Medicine, Faculty of Medicine and University Hospital Carl Gustav Carus, Technische Universität Dresden, Dresden, Germany
| | - Jan Petr
- Helmholtz-Zentrum Dresden-Rossendorf, Institute of Radiopharmaceutical Cancer Research, Dresden, Germany.,Department of Biomedical Engineering, Rochester Institute of Technology, Rochester, New York
| | - Jörg van den Hoff
- Department of Nuclear Medicine, Faculty of Medicine and University Hospital Carl Gustav Carus, Technische Universität Dresden, Dresden, Germany.,Helmholtz-Zentrum Dresden-Rossendorf, Institute of Radiopharmaceutical Cancer Research, Dresden, Germany
| | - Jörg Steinbach
- Helmholtz-Zentrum Dresden-Rossendorf, Institute of Radiopharmaceutical Cancer Research, Dresden, Germany.,Department of Chemistry and Food Chemistry, TU Dresden, Dresden, Germany
| | - Dietmar Krex
- Department of Neurosurgery, Faculty of Medicine and University Hospital Carl Gustav Carus, Technische Universität Dresden, Dresden, Germany
| | - Gabriele Schmitz-Schackert
- Department of Neurosurgery, Faculty of Medicine and University Hospital Carl Gustav Carus, Technische Universität Dresden, Dresden, Germany
| | - Monique Falk
- Department of Radiation Oncology, Faculty of Medicine and University Hospital Carl Gustav Carus, Technische Universität Dresden, Dresden, Germany.,National Center for Tumor Diseases (NCT), Partner Site Dresden, Germany: German Cancer Research Center (DKFZ), Heidelberg, Germany; Faculty of Medicine and University Hospital Carl Gustav Carus, Technische Universität Dresden, Dresden, Germany, and Helmholtz Association/Helmholtz-Zentrum Dresden - Rossendorf (HZDR), Dresden, Germany.,German Cancer Research Center (DKFZ), Heidelberg and German Cancer Consortium (DKTK) partner site, Dresden, Germany
| | - Michael Baumann
- Department of Radiation Oncology, Faculty of Medicine and University Hospital Carl Gustav Carus, Technische Universität Dresden, Dresden, Germany.,OncoRay - National Center for Radiation Research in Oncology, Faculty of Medicine and University Hospital Carl Gustav Carus, Technische Universität Dresden, Helmholtz-Zentrum Dresden - Rossendorf, Dresden, Germany.,Helmholtz-Zentrum Dresden-Rossendorf, Institute of Radiooncology, Dresden, Germany.,German Cancer Research Center (DKFZ), Heidelberg, Germany
| | - Mechthild Krause
- Department of Radiation Oncology, Faculty of Medicine and University Hospital Carl Gustav Carus, Technische Universität Dresden, Dresden, Germany.,National Center for Tumor Diseases (NCT), Partner Site Dresden, Germany: German Cancer Research Center (DKFZ), Heidelberg, Germany; Faculty of Medicine and University Hospital Carl Gustav Carus, Technische Universität Dresden, Dresden, Germany, and Helmholtz Association/Helmholtz-Zentrum Dresden - Rossendorf (HZDR), Dresden, Germany.,OncoRay - National Center for Radiation Research in Oncology, Faculty of Medicine and University Hospital Carl Gustav Carus, Technische Universität Dresden, Helmholtz-Zentrum Dresden - Rossendorf, Dresden, Germany.,German Cancer Research Center (DKFZ), Heidelberg and German Cancer Consortium (DKTK) partner site, Dresden, Germany.,Helmholtz-Zentrum Dresden-Rossendorf, Institute of Radiooncology, Dresden, Germany
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Zheng L, Zhou ZR, Yu Q, Shi M, Yang Y, Zhou X, Li C, Wei Q. The Definition and Delineation of the Target Area of Radiotherapy Based on the Recurrence Pattern of Glioblastoma After Temozolomide Chemoradiotherapy. Front Oncol 2021; 10:615368. [PMID: 33692942 PMCID: PMC7937883 DOI: 10.3389/fonc.2020.615368] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2020] [Accepted: 12/30/2020] [Indexed: 11/13/2022] Open
Abstract
Radiotherapy is an important treatment for glioblastoma (GBM), but there is no consensus on the target delineation for GBM radiotherapy. The Radiation Therapy Oncology Group (RTOG) and European Organisation for Research and Treatment of Cancer (EORTC) each have their own rules. Our center adopted a target volume delineation plan based on our previous studies. This study focuses on the recurrence pattern of GBM patients whose target delineations did not intentionally include the T2/fluid-attenuated inversion recovery (FLAIR) hyperintensity area outside of the gross tumor volume (GTV). We prospectively collected 162 GBM cases and retrospectively analysed the clinical data and continuous dynamic magnetic resonance images (MRI) of 55 patients with recurrent GBM. All patients received concurrent radiotherapy and chemotherapy with temozolomide (TMZ). The GTV that we defined includes the postoperative T1-weighted MRI enhancement area and resection cavity. Clinical target volume 1 (CTV1) and CTV2 were defined as GTVs with 1 and 2 cm margins, respectively. Planning target volume 1 (PTV1) and PTV2 were defined as CTV1 and CTV2 plus a 3 mm margin with prescribed doses of 60 and 54 Gy, respectively. The first recurrent contrast-enhanced T1-weighted MRI was introduced into the Varian Eclipse radiotherapy planning system and fused with the original planning computed tomography (CT) images to determine the recurrence pattern. The median follow-up time was 15.8 months. The median overall survival (OS) and progression-free survival (PFS) were 17.7 and 7.0 months, respectively. Among the patients, 44 had central recurrences, two had in-field recurrences, one had marginal recurrence occurred, 11 had distant recurrences, and three had subependymal recurrences. Five patients had multiple recurrence patterns. Compared to the EORTC protocol, target delineation that excludes the adjacent T2/FLAIR hyperintensity area reduces the brain volume exposed to high-dose radiation (P = 0.000) without an increased risk of marginal recurrence. Therefore, it is worthwhile to conduct a clinical trial investigating the feasibility of intentionally not including the T2/FLAIR hyperintensity region outside of the GTV.
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Affiliation(s)
- Lin Zheng
- Department of Radiation Oncology, The Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, China.,Department of Radiation Oncology, Taizhou Cancer Hospital, Wenling, China
| | - Zhi-Rui Zhou
- Radiation Oncology Center, Huashan Hospital, Shanghai Medical College, Fudan University, Shanghai, China
| | - QianQian Yu
- Department of Radiation Oncology, The Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, China
| | - Minghan Shi
- Département de l'éducation aux adultes, Cégep Saint-Jean-sur-Richelieu, Brossard, QC, Canada
| | - Yang Yang
- Department of Radiation Oncology, The Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, China
| | - Xiaofeng Zhou
- Department of Radiation Oncology, The Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, China
| | - Chao Li
- Department of Radiation Oncology, The Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, China
| | - Qichun Wei
- Department of Radiation Oncology, The Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, China
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Yu VY, Nguyen D, O'Connor D, Ruan D, Kaprealian T, Chin R, Sheng K. Treating Glioblastoma Multiforme (GBM) with super hyperfractionated radiation therapy: Implication of temporal dose fractionation optimization including cancer stem cell dynamics. PLoS One 2021; 16:e0245676. [PMID: 33524046 PMCID: PMC7850476 DOI: 10.1371/journal.pone.0245676] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2020] [Accepted: 01/05/2021] [Indexed: 11/18/2022] Open
Abstract
PURPOSE A previously developed ordinary differential equation (ODE) that models the dynamic interaction and distinct radiosensitivity between cancer stem cells (CSC) and differentiated cancer cells (DCC) was used to explain the definitive treatment failure in Glioblastoma Multiforme (GBM) for conventionally and hypo-fractionated treatments. In this study, optimization of temporal dose modulation based on the ODE equation is performed to explore the feasibility of improving GBM treatment outcome. METHODS A non-convex optimization problem with the objective of minimizing the total cancer cell number while maintaining the normal tissue biological effective dose (BEDnormal) at 100 Gy, equivalent to the conventional 2 Gy × 30 dosing scheme was formulated. With specified total number of dose fractions and treatment duration, the optimization was performed using a paired simulated annealing algorithm with fractional doses delivered to the CSC and DCC compartments and time intervals between fractions as variables. The recurrence time, defined as the time point at which the total tumor cell number regrows to 2.8×109 cells, was used to evaluate optimization outcome. Optimization was performed for conventional treatment time frames equivalent to currently and historically utilized fractionation schemes, in which limited improvement in recurrence time delay was observed. The efficacy of a super hyperfractionated approach with a prolonged treatment duration of one year was therefore tested, with both fixed regular and optimized variable time intervals between dose fractions corresponding to total number of fractions equivalent to weekly, bi-weekly, and monthly deliveries (n = 53, 27, 13). Optimization corresponding to BEDnormal of 150 Gy was also obtained to evaluate the possibility in further recurrence delay with dose escalation. RESULTS For the super hyperfractionated schedules with dose fraction number equivalent to weekly, bi-weekly, and monthly deliveries, the recurrence time points were found to be 430.5, 423.9, and 413.3 days, respectively, significantly delayed compared with the recurrence time of 250.3 days from conventional fractionation. Results show that optimal outcome was achieved by first delivering infrequent fractions followed by dense once per day fractions in the middle and end of the treatment course, with sparse and low dose treatments in the between. The dose to the CSC compartment was held relatively constant throughout while larger dose fractions to the DCC compartment were observed in the beginning and final fractions that preceded large time intervals. Dose escalation to BEDnormal of 150 Gy was shown capable of further delaying recurrence time to 452 days. CONCLUSION The development and utilization of a temporal dose fractionation optimization framework in the context of CSC dynamics have demonstrated that substantial delay in GBM local tumor recurrence could be achieved with a super hyperfractionated treatment approach. Preclinical and clinical studies are needed to validate the efficacy of this novel treatment delivery method.
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Affiliation(s)
- Victoria Y Yu
- Department of Radiation Oncology, David Geffen School of Medicine, University of California Los Angeles, Los Angeles, California, United States of America
| | - Dan Nguyen
- Department of Radiation Oncology, David Geffen School of Medicine, University of California Los Angeles, Los Angeles, California, United States of America
| | - Daniel O'Connor
- Department of Radiation Oncology, David Geffen School of Medicine, University of California Los Angeles, Los Angeles, California, United States of America
| | - Dan Ruan
- Department of Radiation Oncology, David Geffen School of Medicine, University of California Los Angeles, Los Angeles, California, United States of America
| | - Tania Kaprealian
- Department of Radiation Oncology, David Geffen School of Medicine, University of California Los Angeles, Los Angeles, California, United States of America
| | - Robert Chin
- Department of Radiation Oncology, David Geffen School of Medicine, University of California Los Angeles, Los Angeles, California, United States of America
| | - Ke Sheng
- Department of Radiation Oncology, David Geffen School of Medicine, University of California Los Angeles, Los Angeles, California, United States of America
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Liu S, Zhao Q, Shi W, Zheng Z, Liu Z, Meng L, Dong L, Jiang X. Advances in radiotherapy and comprehensive treatment of high-grade glioma: immunotherapy and tumor-treating fields. J Cancer 2021; 12:1094-1104. [PMID: 33442407 PMCID: PMC7797642 DOI: 10.7150/jca.51107] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2020] [Accepted: 11/21/2020] [Indexed: 12/18/2022] Open
Abstract
High-grade gliomas (HGGs) are the most common primary malignant brain tumors. They have a high degree of malignancy and show invasive growth. The personal treatment plan for HGG is based on the patient's age, performance status, and degree of tumor invasion. The basic treatment plan for HGG involves tumor resection, radiotherapy (RT) with concomitant temozolomide (TMZ), and adjuvant TMZ chemotherapy. The basic radiation technology includes conventional RT, three-dimensional conformal RT, intensity-modulated RT, and stereotactic RT. As our understanding of tumor pathogenesis has deepened, so-called comprehensive treatment schemes have attracted attention. These combine RT with chemotherapy, molecular targeted therapy, immunotherapy, or tumor-treating fields. These emerging treatments are expected to improve the prospects of patients with HGG. In the present article, we review the recent advances in RT and comprehensive treatment for patients with newly diagnosed and recurrent HGG.
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Affiliation(s)
- Shiyu Liu
- Department of Radiation Oncology, The First Hospital of Jilin University, Changchun 130021, China.,Jilin Provincial Key Laboratory of Radiation Oncology & Therapy, The First Hospital of Jilin University, Changchun 130021, China.,NHC Key Laboratory of Radiobiology, School of Public Health, Jilin University, Changchun 130021, China
| | - Qin Zhao
- Department of Radiation Oncology, The First Hospital of Jilin University, Changchun 130021, China.,Jilin Provincial Key Laboratory of Radiation Oncology & Therapy, The First Hospital of Jilin University, Changchun 130021, China.,NHC Key Laboratory of Radiobiology, School of Public Health, Jilin University, Changchun 130021, China
| | - Weiyan Shi
- Department of Radiation Oncology, The First Hospital of Jilin University, Changchun 130021, China.,Jilin Provincial Key Laboratory of Radiation Oncology & Therapy, The First Hospital of Jilin University, Changchun 130021, China.,NHC Key Laboratory of Radiobiology, School of Public Health, Jilin University, Changchun 130021, China
| | - Zhuangzhuang Zheng
- Department of Radiation Oncology, The First Hospital of Jilin University, Changchun 130021, China.,Jilin Provincial Key Laboratory of Radiation Oncology & Therapy, The First Hospital of Jilin University, Changchun 130021, China.,NHC Key Laboratory of Radiobiology, School of Public Health, Jilin University, Changchun 130021, China
| | - Zijing Liu
- Department of Radiation Oncology, The First Hospital of Jilin University, Changchun 130021, China.,Jilin Provincial Key Laboratory of Radiation Oncology & Therapy, The First Hospital of Jilin University, Changchun 130021, China.,NHC Key Laboratory of Radiobiology, School of Public Health, Jilin University, Changchun 130021, China
| | - Lingbin Meng
- Department of Hematology and Medical Oncology, Moffitt Cancer Center, Tampa, FL 33612, USA
| | - Lihua Dong
- Department of Radiation Oncology, The First Hospital of Jilin University, Changchun 130021, China.,Jilin Provincial Key Laboratory of Radiation Oncology & Therapy, The First Hospital of Jilin University, Changchun 130021, China.,NHC Key Laboratory of Radiobiology, School of Public Health, Jilin University, Changchun 130021, China
| | - Xin Jiang
- Department of Radiation Oncology, The First Hospital of Jilin University, Changchun 130021, China.,Jilin Provincial Key Laboratory of Radiation Oncology & Therapy, The First Hospital of Jilin University, Changchun 130021, China.,NHC Key Laboratory of Radiobiology, School of Public Health, Jilin University, Changchun 130021, China
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McAbee JH, Degorre-Kerbaul C, Tofilon PJ. In Vitro Methods for the Study of Glioblastoma Stem-Like Cell Radiosensitivity. Methods Mol Biol 2021; 2269:37-47. [PMID: 33687670 PMCID: PMC10802913 DOI: 10.1007/978-1-0716-1225-5_3] [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] [Indexed: 06/12/2023]
Abstract
Ionizing radiation is a critical component of glioblastoma (GBM) therapy. Recent data have implicated glioblastoma stem-like cells (GSCs) as determinants of GBM development, maintenance, and treatment response. Understanding the response of GSCs to radiation should thus provide insight into the development of improved GBM treatment strategies. Towards this end, in vitro techniques for the analysis of GSC radiosensitivity are an essential starting point. One such method, the clonogenic survival assay has been adapted to assessing the intrinsic radiosensitivity of GSCs and is described here. As an alternative method, the limiting dilution assay is presented for defining the radiosensitivity of GSC lines that do not form colonies or only grow as neurospheres. In addition to these cellular strategies, we describe γH2AX foci analysis, which provides a surrogate marker for radiosensitivity at the molecular level. Taken together, the in vitro methods presented here provide tools for defining intrinsic radiosensitivity of GSCs and for testing agents that may enhance GBM radioresponse.
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Affiliation(s)
- Joseph H McAbee
- Radiation Oncology Branch, National Cancer Institute, National Institutes of Health, Bethesda, MD, USA
- Department of Clinical Neurosciences, University of Cambridge, Cambridge, UK
- Wake Forest School of Medicine, Winston-Salem, NC, USA
| | - Charlotte Degorre-Kerbaul
- Radiation Oncology Branch, National Cancer Institute, National Institutes of Health, Bethesda, MD, USA
| | - Philip J Tofilon
- Radiation Oncology Branch, National Cancer Institute, National Institutes of Health, Bethesda, MD, USA.
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Kamson D, Tsien C. Novel Magnetic Resonance Imaging and Positron Emission Tomography in the RT Planning and Assessment of Response of Malignant Gliomas. Mol Imaging 2021. [DOI: 10.1016/b978-0-12-816386-3.00078-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022] Open
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Tinkle CL, Singh C, Lloyd S, Guo Y, Li Y, Pappo AS, DuBois SG, Lucas JT, Haas-Kogan DA, Terezakis SA, Braunstein SE, Krasin MJ. Stereotactic Body Radiation Therapy for Metastatic and Recurrent Solid Tumors in Children and Young Adults. Int J Radiat Oncol Biol Phys 2020; 109:1396-1405. [PMID: 33259934 DOI: 10.1016/j.ijrobp.2020.11.054] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2020] [Revised: 11/16/2020] [Accepted: 11/18/2020] [Indexed: 12/25/2022]
Abstract
PURPOSE The use of stereotactic body radiation therapy (SBRT) in pediatric patients has been underreported. We reviewed practice patterns, outcomes, and toxicity of SBRT in this population. METHODS AND MATERIALS In this multi-institutional study, 55 patients with 107 non-central nervous system lesions treated with SBRT between 2010 and 2016 were reviewed. Treatment response was evaluated by Response Evaluation Criteria in Solid Tumors (RECIST) v1.1 and modified RECIST v1.1 criteria for soft-tissue and bone lesions, respectively. Patterns of local failure (LF) were assessed dosimetrically. The cumulative incidence of LF and toxicity were estimated accounting for the competing risk event of death. Predictors of LF were identified through joint frailty models for clustered competing risks. RESULTS The median (range) dose/fraction was 7 (4.5-25) Gy, the total (range) dose/site was 35 (12-45), and the median (range) number of fractions was 5 (1-9). The radiographic response rates of bone and soft-tissue lesions were 90.6% and 76.7%, respectively. Symptom improvement was observed for 62% of symptomatic sites. A total of 27 LFs were documented, with 14 in-field, 9 marginal, and 4 out-of-field LFs. The 1-year estimated cumulative LF rate, progression-free survival, and overall survival were 25.2% (95% confidence interval [CI], 17.2%-36.1%), 17.5% (95% CI, 9.0%-34.1%), and 61% (95% CI, 48.9%-76.1%), respectively. Lesion type (soft tissue vs bone) was the only significant predictor of LF on multivariable analysis (P = .04), with increased hazard for soft-tissue lesions. No acute or late toxicity of grade 4 or higher was observed; the estimated 1-year cumulative incidence of late toxicity of any grade was 7.5% (95% CI, 3.6%-12.1%). CONCLUSIONS The SBRT was well tolerated and resulted in radiographic response and symptom palliation in most pediatric patients with advanced disease. The 1-year cumulative LF rate of 25% will serve as a benchmark for further modifications to radiation therapy indications, parameters, and combination therapy.
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Affiliation(s)
- Christopher L Tinkle
- Department of Radiation Oncology, St. Jude Children's Research Hospital, Memphis, Tennessee.
| | - Charu Singh
- Department of Radiation Oncology, St. Jude Children's Research Hospital, Memphis, Tennessee
| | - Shane Lloyd
- Department of Radiation Oncology, University of California, San Francisco
| | - Yian Guo
- Department of Biostatistics, St. Jude Children's Research Hospital, Memphis, Tennessee
| | - Yimei Li
- Department of Biostatistics, St. Jude Children's Research Hospital, Memphis, Tennessee
| | - Alberto S Pappo
- Department of Oncology, St. Jude Children's Research Hospital, Memphis, Tennessee
| | - Steven G DuBois
- Department of Pediatrics, University of California, San Francisco
| | - John T Lucas
- Department of Radiation Oncology, St. Jude Children's Research Hospital, Memphis, Tennessee
| | | | - Stephanie A Terezakis
- Department of Radiation Oncology and Molecular Radiation Sciences, Johns Hopkins University School of Medicine, Baltimore, Maryland
| | - Steve E Braunstein
- Department of Radiation Oncology, University of California, San Francisco
| | - Matthew J Krasin
- Department of Radiation Oncology, St. Jude Children's Research Hospital, Memphis, Tennessee
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Teyateeti A, Geno CS, Stafford SS, Mahajan A, Yan ES, Merrell KW, Laack NN, Parney IF, Brown PD, Jethwa KR. Does the dural resection bed need to be irradiated? Patterns of recurrence and implications for postoperative radiotherapy for temporal lobe gliomas. Neurooncol Pract 2020; 8:190-198. [PMID: 33898052 DOI: 10.1093/nop/npaa073] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Background Patterns of recurrence and survival with different surgical and radiotherapy (RT) techniques were evaluated to guide RT target volumes for patients with temporal lobe glioma. Methods and Materials This retrospective cohort study included patients with World Health Organization grades II to IV temporal lobe glioma treated with either partial (PTL) or complete temporal lobectomy (CTL) followed by RT covering both the parenchymal and dural resection bed (whole-cavity radiotherapy [WCRT]) or the parenchymal resection bed only (partial-cavity radiotherapy [PCRT]). Patterns of recurrence, progression-free survival (PFS) and overall survival (OS) were evaluated. Results Fifty-one patients were included and 84.3% of patients had high-grade glioma (HGG). CTL and PTL were performed for 11 (21.6%) and 40 (78.4%) patients, respectively. Median RT dose was 60 Gy (range, 40-76 Gy). There were 82.4% and 17.6% of patients who received WCRT and PCRT, respectively. Median follow-up time was 18.4 months (range, 4-161 months). Forty-six patients (90.2%) experienced disease recurrence, most commonly at the parenchymal resection bed (76.5%). No patients experienced an isolated dural recurrence. The median PFS and OS for the PCRT and WCRT cohorts were 8.6 vs 10.8 months (P = .979) and 19.9 vs 18.6 months (P = .859), respectively. PCRT was associated with a lower RT dose to the brainstem, optic, and ocular structures, hippocampus, and pituitary. Conclusion We identified no isolated dural recurrence and similar PFS and OS regardless of postoperative RT volume, whereas PCRT was associated with dose reduction to critical structures. Omission of dural RT may be considered a reasonable alternative approach. Further validation with larger comparative studies is warranted.
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Affiliation(s)
- Achiraya Teyateeti
- Department of Radiation Oncology, Mayo Clinic, Rochester, Minnesota, US.,Division of Radiation Oncology, Department of Radiology, Faculty of Medicine Siriraj Hospital, Mahidol University, Bangkok, Thailand
| | - Connie S Geno
- Department of Neurologic Surgery, Mayo Clinic, Rochester, Minnesota, US
| | - Scott S Stafford
- Department of Radiation Oncology, Mayo Clinic, Rochester, Minnesota, US
| | - Anita Mahajan
- Department of Radiation Oncology, Mayo Clinic, Rochester, Minnesota, US
| | - Elizabeth S Yan
- Department of Radiation Oncology, Mayo Clinic, Rochester, Minnesota, US
| | - Kenneth W Merrell
- Department of Radiation Oncology, Mayo Clinic, Rochester, Minnesota, US
| | - Nadia N Laack
- Department of Radiation Oncology, Mayo Clinic, Rochester, Minnesota, US
| | - Ian F Parney
- Department of Neurologic Surgery, Mayo Clinic, Rochester, Minnesota, US
| | - Paul D Brown
- Department of Radiation Oncology, Mayo Clinic, Rochester, Minnesota, US
| | - Krishan R Jethwa
- Department of Radiation Oncology, Mayo Clinic, Rochester, Minnesota, US.,Department of Therapeutic Radiology, Yale University School of Medicine, New Haven, Connecticut, US
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McAbee JH, Degorre-Kerbaul C, Valdez K, Wendler A, Shankavaram UT, Watts C, Camphausen K, Tofilon PJ. Detection of glioblastoma intratumor heterogeneity in radiosensitivity using patient-derived neurosphere cultures. J Neurooncol 2020; 149:383-390. [PMID: 33057920 DOI: 10.1007/s11060-020-03643-0] [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: 08/24/2020] [Accepted: 10/01/2020] [Indexed: 11/29/2022]
Abstract
PURPOSE Glioblastoma (GBM) is characterized by extensive clonal diversity suggesting the presence of tumor cells with varying degrees of treatment sensitivity. Radiotherapy is an integral part of glioblastoma treatment. Whether GBMs are comprised of spatially distinct cellular populations with uniform or varying degrees of radiosensitivity has not been established. METHODS Spatially distinct regions of three GBMs (J3, J7 and J14) were resected and unique cell lines were derived from each region. DNA from cell lines, corresponding tumor fragments, and patient blood was extracted for whole exome sequencing. Variants, clonal composition, and functional implications were compared and analyzed with superFreq and IPA. Limiting dilution assays were performed on cell lines to measure intrinsic radiosensitivity. RESULTS Based on WES, cell lines generated from different regions of the same tumor were more closely correlated with their tumor of origin than the other GBMs. Variant and clonal composition comparisons showed that cell lines from distinct tumors displayed increasing levels of ITH with J3 and J14 having the lowest and highest, respectively. The radiosensitivities of the cell lines generated from the J3 tumor were similar as were those generated from the J7 tumor. However, the radiosensitivities of the 2 cell lines generated from the J14 tumor (J14T3 and J14T6) were significantly different with J14T6 being more sensitive than J14T3. CONCLUSION Data suggest a tumor dependent ITH in radiosensitivity. The existence of ITH in radiosensitivity may impact not only the initial therapeutic response but also the effectiveness of retreatment protocols.
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Affiliation(s)
- Joseph H McAbee
- Radiation Oncology Branch, NCI, Bethesda, MD, USA.,Department of Clinical Neurosciences, University of Cambridge, Cambridge, UK.,Wake Forest University School of Medicine, Winston-Salem, NC, USA
| | | | | | - Astrid Wendler
- Department of Clinical Neurosciences, University of Cambridge, Cambridge, UK
| | | | - Colin Watts
- Department of Neurosurgery, Institute of Cancer Genome Sciences, University of Birmingham, Birmingham, UK
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Abstract
The major applications for molecular imaging with PET in clinical practice concern cancer imaging. Undoubtedly, 18F-FDG represents the backbone of nuclear oncology as it remains so far the most widely employed positron emitter compound. The acquired knowledge on cancer features, however, allowed the recognition in the last decades of multiple metabolic or pathogenic pathways within the cancer cells, which stimulated the development of novel radiopharmaceuticals. An endless list of PET tracers, substantially covering all hallmarks of cancer, has entered clinical routine or is being investigated in diagnostic trials. Some of them guard significant clinical applications, whereas others mostly bear a huge potential. This chapter summarizes a selected list of non-FDG PET tracers, described based on their introduction into and impact on clinical practice.
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Baker S, Logie N, Paulson K, Duimering A, Murtha A. Radiotherapy for Brain Tumors: Current Practice and Future Directions. CURRENT CANCER THERAPY REVIEWS 2020. [DOI: 10.2174/1573394715666181129105542] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Radiotherapy is an important component of the treatment for primary and metastatic
brain tumors. Due to the close proximity of critical structures and normal brain parenchyma, Central
Nervous System (CNS) radiotherapy is associated with adverse effects such as neurocognitive
deficits, which must be weighed against the benefit of improved tumor control. Advanced radiotherapy
technology may help to mitigate toxicity risks, although there is a paucity of high-level
evidence to support its use. Recent advances have been made in the treatment for gliomas, meningiomas,
benign tumors, and metastases, although outcomes remain poor for many high grade
tumors. This review highlights recent developments in CNS radiotherapy, discusses common
treatment toxicities, critically reviews advanced radiotherapy technologies, and highlights promising
treatment strategies to improve clinical outcomes in the future.
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Affiliation(s)
- Sarah Baker
- Department of Radiation Oncology, Cross Cancer Institute, Edmonton, AB, Canada
| | - Natalie Logie
- University of Florida Proton Therapy Institute, Jacksonville, FL, United States
| | - Kim Paulson
- Department of Radiation Oncology, Cross Cancer Institute, Edmonton, AB, Canada
| | - Adele Duimering
- Department of Radiation Oncology, Cross Cancer Institute, Edmonton, AB, Canada
| | - Albert Murtha
- Department of Radiation Oncology, Cross Cancer Institute, Edmonton, AB, Canada
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Kumar N, Gy S, Dracham CB, Dey T, Madan R, Khosla D, Oinum A, Kapoor R. Can 3D-CRT meet the desired dose distribution to target and OARs in glioblastoma? A tertiary cancer center experience. CNS Oncol 2020; 9:CNS60. [PMID: 32945180 PMCID: PMC7546124 DOI: 10.2217/cns-2020-0010] [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] [Indexed: 11/21/2022] Open
Abstract
Aim: The purpose of the study is to perform a dosimetric analysis of the doses received by planning target volume and organ at risks in the postoperative glioblastoma by using 3D-conformal radiotherapy to a total dose of 60 Gy in 30 fractions. Materials & Methods: All patients received concurrent temozolomide every day, and this was followed by adjuvant temozolomide of 5 days of treatment per month. Results: More than 98% of patients were treated with a dose of 60 Gy. Doses were analyzed for the normal whole brain, tumor volume, as well as all the organs at risk. Conclusion: Given the grave prognosis and the limited survival of glioblastoma despite the best treatment available, makes 3D-conformal radiotherapy an equally acceptable treatment option.
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Affiliation(s)
- Narendra Kumar
- Department of Radiotherapy & Oncology, Post Graduate Institute of Medical Education and Research, Chandigarh 160012, India
| | - Srinivasa Gy
- Department of Radiotherapy & Oncology, Post Graduate Institute of Medical Education and Research, Chandigarh 160012, India
| | - Chinna B Dracham
- Department of Radiotherapy & Oncology, Post Graduate Institute of Medical Education and Research, Chandigarh 160012, India
| | - Treshita Dey
- Department of Radiotherapy & Oncology, Post Graduate Institute of Medical Education and Research, Chandigarh 160012, India
| | - Renu Madan
- Department of Radiotherapy & Oncology, Post Graduate Institute of Medical Education and Research, Chandigarh 160012, India
| | - Divya Khosla
- Department of Radiotherapy & Oncology, Post Graduate Institute of Medical Education and Research, Chandigarh 160012, India
| | - Arun Oinum
- Department of Radiotherapy & Oncology, Post Graduate Institute of Medical Education and Research, Chandigarh 160012, India
| | - Rakesh Kapoor
- Department of Radiotherapy & Oncology, Post Graduate Institute of Medical Education and Research, Chandigarh 160012, India
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Wang X, Zhang X, Qiu C, Yang N. STAT3 Contributes to Radioresistance in Cancer. Front Oncol 2020; 10:1120. [PMID: 32733808 PMCID: PMC7358404 DOI: 10.3389/fonc.2020.01120] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2020] [Accepted: 06/04/2020] [Indexed: 12/14/2022] Open
Abstract
Radiotherapy has been used in the clinic for more than one century and it is recognized as one of the main methods in the treatment of malignant tumors. Signal Transducers and Activators of Transcription 3 (STAT3) is reported to be upregulated in many tumor types, and it is believed to be involved in the tumorigenesis, development and malignant behaviors of tumors. Previous studies also found that STAT3 contributes to chemo-resistance of various tumor types. Recently, many studies reported that STAT3 is involved in the response of tumor cells to radiotherapy. But until now, the role of the STAT3 in radioresistance has not been systematically demonstrated. In this study, we will review the radioresistance induced by STAT3 and relative solutions will be discussed.
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Affiliation(s)
- Xuehai Wang
- Department of Otolaryngology, Weihai Municipal Hospital, Shandong University, Weihai, China
| | - Xin Zhang
- Department of Neurosurgery, Qilu Hospital of Shandong University and Institute of Brain and Brain-Inspired Science, Shandong University, Jinan, China.,Shandong Key Laboratory of Brain Function Remodeling, Jinan, China
| | - Chen Qiu
- Department of Radiation Oncology, Qilu Hospital of Shandong University, Jinan, China
| | - Ning Yang
- Department of Neurosurgery, Qilu Hospital of Shandong University and Institute of Brain and Brain-Inspired Science, Shandong University, Jinan, China.,Shandong Key Laboratory of Brain Function Remodeling, Jinan, China
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Bhat K, Saki M, Vlashi E, Cheng F, Duhachek-Muggy S, Alli C, Yu G, Medina P, He L, Damoiseaux R, Pellegrini M, Zemke NR, Nghiemphu PL, Cloughesy TF, Liau LM, Kornblum HI, Pajonk F. The dopamine receptor antagonist trifluoperazine prevents phenotype conversion and improves survival in mouse models of glioblastoma. Proc Natl Acad Sci U S A 2020; 117:11085-11096. [PMID: 32358191 PMCID: PMC7245100 DOI: 10.1073/pnas.1920154117] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
Glioblastoma (GBM) is the deadliest adult brain cancer, and all patients ultimately succumb to the disease. Radiation therapy (RT) provides survival benefit of 6 mo over surgery alone, but these results have not improved in decades. We report that radiation induces a glioma-initiating cell phenotype, and we have identified trifluoperazine (TFP) as a compound that interferes with this phenotype conversion. TFP causes loss of radiation-induced Nanog mRNA expression, and activation of GSK3 with consecutive posttranslational reduction in p-Akt, Sox2, and β-catenin protein levels. TFP did not alter the intrinsic radiation sensitivity of glioma-initiating cells (GICs). Continuous treatment with TFP and a single dose of radiation reduced the number of GICs in vivo and prolonged survival in syngeneic and patient-derived orthotopic xenograft (PDOX) mouse models of GBM. Our findings suggest that the combination of a dopamine receptor antagonist with radiation enhances the efficacy of RT in GBM by preventing radiation-induced phenotype conversion of radiosensitive non-GICs into treatment-resistant, induced GICs (iGICs).
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Affiliation(s)
- Kruttika Bhat
- Department of Radiation Oncology, David Geffen School of Medicine, University of California, Los Angeles, CA 90095
| | - Mohammad Saki
- Department of Radiation Oncology, David Geffen School of Medicine, University of California, Los Angeles, CA 90095
| | - Erina Vlashi
- Department of Radiation Oncology, David Geffen School of Medicine, University of California, Los Angeles, CA 90095
- Jonsson Comprehensive Cancer Center, University of California, Los Angeles, CA 90095
| | - Fei Cheng
- Department of Radiation Oncology, David Geffen School of Medicine, University of California, Los Angeles, CA 90095
| | - Sara Duhachek-Muggy
- Department of Radiation Oncology, David Geffen School of Medicine, University of California, Los Angeles, CA 90095
| | - Claudia Alli
- Department of Radiation Oncology, David Geffen School of Medicine, University of California, Los Angeles, CA 90095
| | - Garrett Yu
- Department of Radiation Oncology, David Geffen School of Medicine, University of California, Los Angeles, CA 90095
| | - Paul Medina
- Department of Radiation Oncology, David Geffen School of Medicine, University of California, Los Angeles, CA 90095
| | - Ling He
- Department of Radiation Oncology, David Geffen School of Medicine, University of California, Los Angeles, CA 90095
| | - Robert Damoiseaux
- Jonsson Comprehensive Cancer Center, University of California, Los Angeles, CA 90095
- Molecular Screening Shared Resource, University of California, Los Angeles, CA 90095
| | - Matteo Pellegrini
- Department of Molecular, Cell and Developmental Biology, University of California, Los Angeles, CA 90095
| | - Nathan R Zemke
- Department of Microbiology, Immunology and Molecular Genetics, University of California, Los Angeles, CA 90095
| | - Phioanh Leia Nghiemphu
- Jonsson Comprehensive Cancer Center, University of California, Los Angeles, CA 90095
- Department of Neurology, University of California, Los Angeles, CA 90095
| | - Timothy F Cloughesy
- Jonsson Comprehensive Cancer Center, University of California, Los Angeles, CA 90095
- Department of Neurology, University of California, Los Angeles, CA 90095
| | - Linda M Liau
- Jonsson Comprehensive Cancer Center, University of California, Los Angeles, CA 90095
- Department of Neurosurgery, University of California, Los Angeles, CA 90095
| | - Harley I Kornblum
- Jonsson Comprehensive Cancer Center, University of California, Los Angeles, CA 90095
- Neuropsychiatric Institute-Semel Institute for Neuroscience & Human Behavior, University of California, Los Angeles, CA 90095
| | - Frank Pajonk
- Department of Radiation Oncology, David Geffen School of Medicine, University of California, Los Angeles, CA 90095;
- Jonsson Comprehensive Cancer Center, University of California, Los Angeles, CA 90095
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Shieh LT, Guo HR, Ho CH, Lin LC, Chang CH, Ho SY. Survival of glioblastoma treated with a moderately escalated radiation dose-Results of a retrospective analysis. PLoS One 2020; 15:e0233188. [PMID: 32413077 PMCID: PMC7228055 DOI: 10.1371/journal.pone.0233188] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2020] [Accepted: 04/29/2020] [Indexed: 11/18/2022] Open
Abstract
Glioblastoma (GBM) has the highest fatality rate among primary malignant brain tumors and typically tends to recur locally just adjacent to the original tumor site following surgical resection and adjuvant radiotherapy. We conducted a study to evaluate the survival outcomes between a standard dose (≤ 60 Gy) and moderate radiation dose escalation (>60 Gy), and to identify prognostic factors for GBM. We retrospectively reviewed the medical records of primary GBM patients diagnosed between 2005 and 2016 in two referral hospitals in Taiwan. They were identified from the cancer registry database and followed up from the date of diagnosis to October 2018. The progression-free survival (PFS) and overall survival (OS) were compared between the two dose groups, and independent factors for survival were analyzed through Cox proportional hazard model. We also affirmed the results using Cox regression with least absolute shrinkage and selection operator (LASSO) approach. From our cancer registry database, 142 GBM patients were identified, and 84 of them fit the inclusion criteria. Of the 84 patients, 52 (62%) were males. The radiation dose ranged from 50.0 Gy to 66.6 Gy, but their treatment volumes were similar to the others. Fifteen (18%) patients received an escalated dose boost >60.0 Gy. The escalated group had a longer median PFS (15.4 vs. 7.9 months, p = 0.01 for log-rank test), and a longer median OS was also longer in the escalation group (33.8 vs. 12.5 months, p <0.001) than the reference group. Following a multivariate analysis, the escalated dose was identified as a significant predictor for good prognosis (PFS: hazard ratio [HR] = 0.48, 95% confidence interval [95%CI]: 0.23-0.98; OS: HR = 0.40, 95%CI: 0.21-0.78). Using the LASSO approach, we found age > 70 (HR = 1.55), diagnosis after 2010 (HR = 1.42), and a larger radiation volume (≥ 250ml; HR = 0.81) were predictors of PFS. The escalated dose (HR = 0.47) and a larger radiation volume (HR = 0.76) were identified as predictors for better OS. Following detailed statistical analysis, a moderate radiation dose escalation (> 60 Gy) was found as an independent factor affecting OS in GBM patients. In conclusion, a moderate radiation dose escalation (> 60 Gy) was an independent predictor for longer OS in GBM patients. However, prospective studies including more patients with more information, such as molecular markers and completeness of resection, are needed to confirm our findings.
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Affiliation(s)
- Li-Tsun Shieh
- Department of Radiation Oncology, Chi Mei Medical Center, Liouying, Tainan, Taiwan, Republic of china
| | - How-Ran Guo
- Department of Environmental and Occupational Health, College of Medicine, National Cheng Kung University, Tainan, Taiwan, Republic of china
- Department of Occupational and Environmental Medicine, National Cheng Kung University Hospital, Tainan, Taiwan, Republic of china
| | - Chung-Han Ho
- Department of Medical Research, Chi Mei Medical Center, Tainan, Taiwan, Republic of china
- Department of Hospital and Health Care Administration, Chia Nan University of Pharmacy and Science, Tainan, Taiwan, Republic of china
| | - Li-Ching Lin
- Department of Radiation Oncology, Chi Mei Medical Center, Tainan, Taiwan, Republic of china
| | - Chin-Hong Chang
- Department of Neurosurgery, Chi Mei Medical Center, Tainan, Taiwan, Republic of china
| | - Sheng-Yow Ho
- Department of Radiation Oncology, Chi Mei Medical Center, Liouying, Tainan, Taiwan, Republic of china
- Department of Radiation Oncology, Chi Mei Medical Center, Tainan, Taiwan, Republic of china
- Graduate Institute of Medical Science, Chang Jung Christian University, Tainan, Taiwan, Republic of china
- * E-mail:
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Ruff M, Kizilbash S, Buckner J. Further understanding of glioma mechanisms of pathogenesis: implications for therapeutic development. Expert Rev Anticancer Ther 2020; 20:355-363. [PMID: 32301635 DOI: 10.1080/14737140.2020.1757440] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Introduction: Recent discoveries in the molecular makeup of gliomas, the relationship of certain molecular drivers, and the patient's response to therapy and overall prognosis have resulted in a paradigm shift and redefined our understanding of glioma and revealed potential vulnerabilities within this recalcitrant and lethal disease.Areas covered: We summarize the current classification of malignant glioma in the context of the historical background, current data-driven treatment strategies, and recent discoveries of the mechanisms of pathogenesis of this disease which recapitulates the developing brain. We describe the relationship to common genetic alterations found in glioma, and possible avenues to exploit these newly revealed mechanisms.Expert opinion: Improved understanding of the molecular underpinnings of this disease has been directly translated into treatment decisions and an improved ability to counsel patients regarding their prognosis. We are beginning to see the first glimmer of a return on the investment in regard to immunotherapy in malignant glioma, with further anticipated successful exploitations of the unique pathophysiology of glioma.
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Affiliation(s)
- Michael Ruff
- Department of Neurology, Mayo Clinic, Rochester, MN, USA.,Department of Medical Oncology, Mayo Clinic, Rochester, MN, USA
| | - Sani Kizilbash
- Department of Medical Oncology, Mayo Clinic, Rochester, MN, USA
| | - Jan Buckner
- Department of Medical Oncology, Mayo Clinic, Rochester, MN, USA
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