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Preusser M, Kazda T, Le Rhun E, Sahm F, Smits M, Gempt J, Koekkoek JA, Monti AF, Csanadi M, Pitter JG, Bulbek H, Fournier B, Quoilin C, Gorlia T, Weller M, Minniti G. Lomustine with or without reirradiation for first progression of glioblastoma, LEGATO, EORTC-2227-BTG: study protocol for a randomized phase III study. Trials 2024; 25:366. [PMID: 38849943 PMCID: PMC11157762 DOI: 10.1186/s13063-024-08213-7] [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] [Received: 05/02/2024] [Accepted: 05/30/2024] [Indexed: 06/09/2024] Open
Abstract
BACKGROUND Chemotherapy with lomustine is widely considered as standard treatment option for progressive glioblastoma. The value of adding radiotherapy to second-line chemotherapy is not known. METHODS EORTC-2227-BTG (LEGATO, NCT05904119) is an investigator-initiated, pragmatic (PRECIS-2 score: 34 out of 45), randomized, multicenter phase III trial in patients with first progression of glioblastoma. A total of 411 patients will be randomized in a 1:1 ratio to lomustine (110 mg/m2 every 6 weeks) or lomustine (110 mg/m2 every 6weeks) plus radiotherapy (35 Gy in 10 fractions). Main eligibility criteria include histologic confirmation of glioblastoma, isocitrate dehydrogenase gene (IDH) wild-type per WHO 2021 classification, first progression at least 6 months after the end of prior radiotherapy, radiologically measurable disease according to RANO criteria with a maximum tumor diameter of 5 cm, and WHO performance status of 0-2. The primary efficacy endpoint is overall survival (OS) and secondary endpoints include progression-free survival, response rate, neurocognitive function, health-related quality of life, and health economic parameters. LEGATO is funded by the European Union's Horizon Europe Research program, was activated in March 2024 and will enroll patients in 43 sites in 11 countries across Europe with study completion projected in 2028. DISCUSSION EORTC-2227-BTG (LEGATO) is a publicly funded pragmatic phase III trial designed to clarify the efficacy of adding reirradiation to chemotherapy with lomustine for the treatment of patients with first progression of glioblastoma. TRIAL REGISTRATION ClinicalTrials.gov NCT05904119. Registered before start of inclusion, 23 May 2023.
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Affiliation(s)
- Matthias Preusser
- Department of Medicine I, Division of Oncology, Medical University of Vienna, Waehringer Guertel 18-20, 1090, Vienna, Austria.
| | - Tomáš Kazda
- Department of Radiation Oncology and Research Centre for Applied Molecular Oncology (RECAMO), Masaryk Memorial Cancer Institute, Brno, Czech Republic
| | - Emilie Le Rhun
- Department of Medical Oncology and Hematology, University Hospital & University of Zurich, Zurich, Switzerland
| | - Felix Sahm
- Department of Neuropathology, University Hospital Heidelberg and CCU Neuropathology, DKFZ, Heidelberg, Germany
| | - Marion Smits
- Department of Radiology & Nuclear Medicine, Erasmus MC, Rotterdam, The Netherlands
| | - Jens Gempt
- Department of Neurosurgery, University Medical Centre Hamburg-Eppendorf, Hamburg, Germany
| | - Johan Af Koekkoek
- Department of Neurology, Leiden University Medical Centre, Leiden, The Netherlands
| | - Angelo F Monti
- Department of Medical Physics, ASST GOM Niguarda, Milano, Italy
| | | | | | - Helen Bulbek
- Brainstrust-the brain cancer people, Isle of Wight, Cowes, UK
| | | | | | | | - Michael Weller
- Department of Neurology, University Hospital & University of Zurich, Zurich, Switzerland
| | - Giuseppe Minniti
- Department of Radiological Sciences, Oncology and Anatomical Pathology and IRCCS Neuromed (IS), Sapienza University, Policlinico Umberto I, Rome, Italy
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Gullhaug A, Haakensen VD, De Ruysscher D, Simone CB, Hotca-Cho AE, Chhabra AM, Hellebust TP, Paulsen EE, Dimopoulos MP, Johansen S. Lung cancer reirradiation: Exploring modifications to utilization, treatment modalities and factors associated with outcomes. J Med Imaging Radiat Sci 2024; 55:221-231. [PMID: 38429174 DOI: 10.1016/j.jmir.2024.02.004] [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: 05/08/2023] [Revised: 01/18/2024] [Accepted: 02/02/2024] [Indexed: 03/03/2024]
Abstract
BACKGROUND Patients treated for lung cancer (LC) often experience locoregional failure after initial treatment. Due to technological advances, thoracic reirradiation (re-RT) has become a viable treatment option. We sought to investigate the use of thoracic re-RT in LC patients over a time period characterized by technological advances in a large, multi-center cohort. METHODS AND MATERIALS LC patients treated with thoracic re-RT in two University Hospitals from 2010-2020 were identified. Clinical variables and RT data were extracted from the medical records and treatment planning systems. Overall survival (OS) was calculated from the last day of re-RT until death or last follow up. RESULTS 296 patients (small cell LC n=30, non-small cell LC n=266) were included. Three-dimensional conformal radiation therapy was the RT technique used most frequently (63%), and 86% of all patients were referred for re-RT with palliative treatment intent. During the second half of the study period, the use of thoracic re-RT increased in general, more patients received curative re-RT, and there was an increased use of stereotactic body radiation therapy (SBRT). Median time between initial RT and re-RT was 18 months (range 1-213 months). Only 83/296 patients had combined treatment plans that allowed for registration of combined doses to organs at risk (OAR). Most of the combined doses to OAR were below recommendations from guidelines. Multivariate analysis showed superior OS (p<0.05) in patients treated with curative intent, SBRT or intensity modulated radiation therapy or had excellent performance status prior to re-RT. CONCLUSIONS The use of re-RT increased in the second half of the study period, although 2020 did not follow the trend. The use of SBRT and IMRT became more frequent over the years, yet the majority received palliative re-RT. Combined dose plans were only created for one third of the patients.
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Affiliation(s)
- Anna Gullhaug
- Department of Life Sciences and Health, Oslo Metropolitan University, Faculty of Health Sciences, Oslo, Norway; Department of Oncology, Oslo University Hospital, Oslo, Norway.
| | - Vilde D Haakensen
- Department of Oncology, Oslo University Hospital, Oslo, Norway; Department of Cancer Genetics, Institute for Cancer Research, Oslo University Hospital, Oslo, Norway
| | - Dirk De Ruysscher
- Department of Radiation Oncology (Maastro), Maastricht University Medical Center, GROW School for Oncology and Developmental Biology, the Netherlands
| | - Charles B Simone
- New York Proton Center and Memorial Sloan Kettering Cancer Center, New York, New York, USA
| | - Alexandra E Hotca-Cho
- Department of Radiation Oncology, Icahn School of Medicine at Mount Sinai, New York, USA
| | | | - Taran P Hellebust
- Department of Medical Physics, Oslo University Hospital, Oslo, Norway; Department of Physics, University of Oslo, Oslo, Norway
| | - Erna E Paulsen
- Department of Clinical Medicine, UiT, The Arctic University of Norway, Tromso, Norway; Department of Oncology, University Hospital of North Norway, Tromso, Norway
| | - Maria P Dimopoulos
- Department of Radiation Oncology, Mount Sinai Health System, New York, New York, USA
| | - Safora Johansen
- Department of Life Sciences and Health, Oslo Metropolitan University, Faculty of Health Sciences, Oslo, Norway; Department of Oncology, Oslo University Hospital, Oslo, Norway; Singapore institute of Technology, Health and Social Sciences, Singapore
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Ajithkumar T, Avanzo M, Yorke E, Tsang DS, Milano MT, Olch AJ, Merchant TE, Dieckmann K, Mahajan A, Fuji H, Paulino AC, Timmermann B, Marks LB, Bentzen SM, Jackson A, Constine LS. Brain and Brain Stem Necrosis After Reirradiation for Recurrent Childhood Primary Central Nervous System Tumors: A PENTEC Comprehensive Review. Int J Radiat Oncol Biol Phys 2024; 119:655-668. [PMID: 38300187 DOI: 10.1016/j.ijrobp.2023.12.043] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2023] [Revised: 12/19/2023] [Accepted: 12/26/2023] [Indexed: 02/02/2024]
Abstract
PURPOSE Reirradiation is increasingly used in children and adolescents/young adults (AYA) with recurrent primary central nervous system tumors. The Pediatric Normal Tissue Effects in the Clinic (PENTEC) reirradiation task force aimed to quantify risks of brain and brain stem necrosis after reirradiation. METHODS AND MATERIALS A systematic literature search using the PubMed and Cochrane databases for peer-reviewed articles from 1975 to 2021 identified 92 studies on reirradiation for recurrent tumors in children/AYA. Seventeen studies representing 449 patients who reported brain and brain stem necrosis after reirradiation contained sufficient data for analysis. While all 17 studies described techniques and doses used for reirradiation, they lacked essential details on clinically significant dose-volume metrics necessary for dose-response modeling on late effects. We, therefore, estimated incidences of necrosis with an exact 95% CI and qualitatively described data. Results from multiple studies were pooled by taking the weighted average of the reported crude rates from individual studies. RESULTS Treated cancers included ependymoma (n = 279 patients; 7 studies), medulloblastoma (n = 98 patients; 6 studies), any CNS tumors (n = 62 patients; 3 studies), and supratentorial high-grade gliomas (n = 10 patients; 1 study). The median interval between initial and reirradiation was 2.3 years (range, 1.2-4.75 years). The median cumulative prescription dose in equivalent dose in 2-Gy fractions (EQD22; assuming α/β value = 2 Gy) was 103.8 Gy (range, 55.8-141.3 Gy). Among 449 reirradiated children/AYA, 22 (4.9%; 95% CI, 3.1%-7.3%) developed brain necrosis and 14 (3.1%; 95% CI, 1.7%-5.2%) developed brain stem necrosis with a weighted median follow-up of 1.6 years (range, 0.5-7.4 years). The median cumulative prescription EQD22 was 111.4 Gy (range, 55.8-141.3 Gy) for development of any necrosis, 107.7 Gy (range, 55.8-141.3 Gy) for brain necrosis, and 112.1 Gy (range, 100.2-117 Gy) for brain stem necrosis. The median latent period between reirradiation and the development of necrosis was 5.7 months (range, 4.3-24 months). Though there were more events among children/AYA undergoing hypofractionated versus conventionally fractionated reirradiation, the differences were not statistically significant (P = .46). CONCLUSIONS Existing reports suggest that in children/AYA with recurrent brain tumors, reirradiation with a total EQD22 of about 112 Gy is associated with an approximate 5% to 7% incidence of brain/brain stem necrosis after a median follow-up of 1.6 years (with the initial course of radiation therapy being given with conventional prescription doses of ≤2 Gy per fraction and the second course with variable fractionations). We recommend a uniform approach for reporting dosimetric endpoints to derive robust predictive models of late toxicities following reirradiation.
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Affiliation(s)
- Thankamma Ajithkumar
- Department of Oncology, Cambridge University Hospitals, Cambridge, United Kingdom.
| | - Michele Avanzo
- Division of Medical Physics, Centro di Riferimento Oncologico Aviano IRCCS, Aviano, Italy
| | - Ellen Yorke
- Department of Medical Physics, Memorial Sloan Kettering Cancer Center, New York, New York
| | - Derek S Tsang
- Princess Margaret Cancer Centre, University Health Network, Toronto, Ontario, Canada
| | - Michael T Milano
- Department of Radiation Oncology, University of Rochester Medical Center, Rochester, New York
| | - Arthur J Olch
- Department of Radiation Oncology and Pediatrics, Children's Hospital Los Angeles, Keck School of Medicine of the University of Southern California, Los Angeles, California
| | - Thomas E Merchant
- Department of Radiation Oncology, St. Jude Children's Research Hospital, Memphis, Tennessee
| | - Karin Dieckmann
- Department of Radiation Oncology, Medical University of Vienna, Vienna, Austria
| | - Anita Mahajan
- Department of Radiation Oncology, Mayo Clinic, Rochester, Minnesota
| | - Hiroshi Fuji
- National Center for Child Health and Development, Tokyo, Japan
| | - Arnold C Paulino
- Department of Radiation Oncology, University of Texas MD Anderson Cancer Center, Houston, Texas
| | - Beate Timmermann
- Department of Particle Therapy, University Hospital Essen, West German Proton Therapy Centre Essen, West German Cancer Center, Essen, Germany
| | - Lawrence B Marks
- Department of Radiation Oncology and Lineberger Comprehensive Cancer Center, University of North Carolina School of Medicine, Chapel Hill, North Carolina
| | - Soren M Bentzen
- Division of Biostatistics and Bioinformatics, Department of Radiation Oncology, and University of Maryland Greenebaum Cancer Center, University of Maryland School of Medicine, Baltimore, Maryland
| | - Andrew Jackson
- Department of Medical Physics, Memorial Sloan Kettering Cancer Center, New York, New York
| | - Louis S Constine
- Department of Radiation Oncology, University of Rochester Medical Center, Rochester, New York; Department of Pediatrics, University of Rochester Medical Center, Rochester, New York
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Mendez Valenzuela CR, Shin K, Weng HY, Plantenga JM, Vanhaezebrouck IF. Radiotherapy for Canine Apocrine Gland Anal Sac Adenocarcinoma: Survival Outcomes and Side Effects of a Palliative Treatment Protocol of 20 Gy in Five Consecutive Fractions. Vet Sci 2024; 11:219. [PMID: 38787191 PMCID: PMC11125963 DOI: 10.3390/vetsci11050219] [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: 03/02/2024] [Revised: 04/19/2024] [Accepted: 05/07/2024] [Indexed: 05/25/2024] Open
Abstract
This research aims to evaluate the outcomes of a radiotherapy protocol, consisting of five fractions of 4 Gy each, resulting in a total dose of 20 Gy for apocrine gland anal sac tumors and local lymph nodes in canines. This protocol was assessed as a palliative treatment for macroscopic tumors alone, or in combination with additional therapies under different scenarios. Medical records from fifty canine patients met the inclusion criteria and were divided into different treatment groups: radiotherapy alone (n = 22, 44%), radiotherapy with chemotherapy or targeted therapy with toceranib (n = 18, 36%), surgery with radiotherapy (n = 5, 10%), and surgery with radiotherapy and chemotherapy or targeted therapy with toceranib (n = 5, 10%). Patients who received radiotherapy alone had a median survival time of 384 days (95% CI 198-569) and 628 days (95% CI 579-676) for RT + additional therapies. The median time to progression for patients with radiotherapy alone was 337 days (95% CI 282-391 days), and 402 days (95% CI 286-517 days) for radiotherapy plus additional treatments. Acute side effects were mild, with the majority having diarrhea (61%), and only one patient developed grade III late effects VRTOG v2 classification; however, this happened 22 months after the first radiotherapy protocol after re-irradiation. The results demonstrate that radiotherapy alone under this protocol provided a comparable median time to progression vs. radiotherapy plus additional treatments while maintaining acceptable side effects. The combination of this protocol with other treatment modalities offers attractive results for local disease control and survival while maintaining acceptable toxicities. Overall, these findings contribute to the growing evidence supporting the role of radiotherapy in managing apocrine gland anal sac adenocarcinoma in dogs.
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Affiliation(s)
| | - Kelly Shin
- College of Science, Purdue University, West Lafayette, IN 47907, USA
| | - Hsin-Yi Weng
- Department of Comparative Pathobiology, College of Veterinary Medicine, Purdue University, West Lafayette, IN 47907, USA
| | - Jeannie M. Plantenga
- Department of Veterinary Clinical Sciences, College of Veterinary Medicine, Purdue University, West Lafayette, IN 47907, USA
| | - Isabelle F. Vanhaezebrouck
- Department of Veterinary Clinical Sciences, College of Veterinary Medicine, Purdue University, West Lafayette, IN 47907, USA
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5
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Yegya-Raman N, Berman AT, Ciunci CA, Friedes C, Berlin E, Iocolano M, Wang X, Lai C, Levin WP, Cengel KA, O'Reilly SE, Cohen RB, Aggarwal C, Marmarelis ME, Singh AP, Sun L, Bradley JD, Plastaras JP, Simone CB, Langer CJ, Feigenberg SJ. Phase 2 Trial of Consolidation Pembrolizumab After Proton Reirradiation for Thoracic Recurrences of Non-Small Cell Lung Cancer. Int J Radiat Oncol Biol Phys 2024; 119:56-65. [PMID: 37652303 DOI: 10.1016/j.ijrobp.2023.08.047] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2023] [Revised: 07/08/2023] [Accepted: 08/17/2023] [Indexed: 09/02/2023]
Abstract
PURPOSE Reirradiation (reRT) with proton beam therapy (PBT) may offer a chance of cure while minimizing toxicity for patients with isolated intrathoracic recurrences of non-small cell lung cancer (NSCLC). However, distant failure remains common, necessitating strategies to integrate more effective systemic therapy. METHODS AND MATERIALS This was a phase 2, single-arm trial (NCT03087760) of consolidation pembrolizumab after PBT reRT for locoregional recurrences of NSCLC. Four to 12 weeks after completion of 60 to 70 Gy PBT reRT, patients without progressive disease received pembrolizumab for up to 12 months. Primary endpoint was progression-free survival (PFS), measured from the start of reRT. Secondary endpoints were overall survival (OS) and National Cancer Institute Common Terminology Criteria for Adverse Events, version 5.0 toxicity. RESULTS Between 2017 and 2021, 22 patients received PBT reRT. Median interval from prior radiation end to reRT start was 20 months. Most recurrences (91%) were centrally located. Most patients received concurrent chemotherapy (95%) and pencil beam scanning PBT (77%), and 36% had received prior durvalumab. Fifteen patients (68%) initiated consolidation pembrolizumab on trial and received a median of 3 cycles (range, 2-17). Pembrolizumab was discontinued most commonly due to toxicity (n = 5; 2 were pembrolizumab-related), disease progression (n = 4), and completion of 1 year (n = 3). Median follow-up was 38.7 months. Median PFS and OS were 8.8 months (95% CI, 4.2-23.7) and 22.8 months (95% CI, 6.9-not reached), respectively. There was only one isolated in-field failure after reRT. Grade ≥3 toxicities occurred in 10 patients (45%); 2 were pembrolizumab-related. There were 2 grade 5 toxicities, an aorto-esophageal fistula at 6.9 months and hemoptysis at 46.8 months, both probably from reRT. The trial closed early due to widespread adoption of immunotherapy off-protocol. CONCLUSIONS In the first-ever prospective trial combining PBT reRT with consolidation immunotherapy, PFS was acceptable and OS favorable. Late grade 5 toxicity occurred in 2 of 22 patients. This approach may be considered in selected patients with isolated thoracic recurrences of NSCLC.
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Affiliation(s)
- Nikhil Yegya-Raman
- Department of Radiation Oncology, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania
| | - Abigail T Berman
- Department of Radiation Oncology, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania
| | - Christine A Ciunci
- Division of Hematology and Oncology, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania
| | - Cole Friedes
- Department of Radiation Oncology, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania
| | - Eva Berlin
- Department of Radiation Oncology, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania
| | - Michelle Iocolano
- Department of Radiation Oncology, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania
| | - Xingmei Wang
- Department of Biostatistics, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania
| | - Ching Lai
- Department of Radiation Oncology, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania
| | - William P Levin
- Department of Radiation Oncology, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania
| | - Keith A Cengel
- Department of Radiation Oncology, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania
| | - Shannon E O'Reilly
- Department of Radiation Oncology, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania
| | - Roger B Cohen
- Division of Hematology and Oncology, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania
| | - Charu Aggarwal
- Division of Hematology and Oncology, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania
| | - Melina E Marmarelis
- Division of Hematology and Oncology, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania
| | - Aditi P Singh
- Division of Hematology and Oncology, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania
| | - Lova Sun
- Division of Hematology and Oncology, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania
| | - Jeffrey D Bradley
- Department of Radiation Oncology, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania
| | - John P Plastaras
- Department of Radiation Oncology, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania
| | - Charles B Simone
- New York Proton Center, New York, New York; Department of Radiation Oncology, Memorial Sloan Kettering Cancer Center, New York, New York
| | - Corey J Langer
- Division of Hematology and Oncology, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania
| | - Steven J Feigenberg
- Department of Radiation Oncology, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania.
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6
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Hardcastle N, Vasquez Osorio E, Jackson A, Mayo C, Aarberg AE, Ayadi M, Belosi F, Ceylan C, Davey A, Dupuis P, Handley JC, Hemminger T, Hoffmann L, Kelly C, Michailidou C, Muscat S, Murrell DH, Pérez-Alija J, Palmer C, Placidi L, Popovic M, Rønde HS, Selby A, Skopidou T, Solomou N, Stroom J, Thompson C, West NS, Zaila A, Appelt AL. Multi-centre evaluation of variation in cumulative dose assessment in reirradiation scenarios. Radiother Oncol 2024; 194:110184. [PMID: 38453055 DOI: 10.1016/j.radonc.2024.110184] [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: 09/13/2023] [Revised: 02/18/2024] [Accepted: 02/20/2024] [Indexed: 03/09/2024]
Abstract
BACKGROUND AND PURPOSE Safe reirradiation relies on assessment of cumulative doses to organs at risk (OARs) across multiple treatments. Different clinical pathways can result in inconsistent estimates. Here, we quantified the consistency of cumulative dose to OARs across multi-centre clinical pathways. MATERIAL AND METHODS We provided DICOM planning CT, structures and doses for two reirradiation cases: head & neck (HN) and lung. Participants followed their standard pathway to assess the cumulative physical and EQD2 doses (with provided α/β values), and submitted DVH metrics and a description of their pathways. Participants could also submit physical dose distributions from Course 1 mapped onto the CT of Course 2 using their best available tools. To assess isolated impact of image registrations, a single observer accumulated each submitted spatially mapped physical dose for every participating centre. RESULTS Cumulative dose assessment was performed by 24 participants. Pathways included rigid (n = 15), or deformable (n = 5) image registration-based 3D dose summation, visual inspection of isodose line contours (n = 1), or summation of dose metrics extracted from each course (n = 3). Largest variations were observed in near-maximum cumulative doses (25.4 - 41.8 Gy for HN, 2.4 - 33.8 Gy for lung OARs), with lower variations in volume/dose metrics to large organs. A standardised process involving spatial mapping of the first course dose to the second course CT followed by summation improved consistency for most near-maximum dose metrics in both cases. CONCLUSION Large variations highlight the uncertainty in reporting cumulative doses in reirradiation scenarios, with implications for outcome analysis and understanding of published doses. Using a standardised workflow potentially including spatially mapped doses improves consistency in determination of accumulated dose in reirradiation scenarios.
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Affiliation(s)
- Nicholas Hardcastle
- Physical Sciences, Peter MacCallum Cancer Centre, Melbourne, VIC, Australia; The Sir Peter MacCallum Department of Oncology, University of Melbourne, Melbourne, VIC, Australia; Centre for Medical Radiation Physics, University of Wollongong, Wollongong, NSW, Australia.
| | | | - Andrew Jackson
- Department of Medical Physics, Memorial Sloan Kettering Cancer Center, New York, NY, USA
| | - Charles Mayo
- Department of Radiation Oncology, University of Michigan, Ann Arbor, MI, USA
| | | | - Myriam Ayadi
- Department of Radiation Oncology, Physics Unit, Centre Léon Bérard, Lyon, France
| | - Francesca Belosi
- Department of Radiation Oncology, University Hospital and University of Zurich, Zurich, Switzerland
| | - Cemile Ceylan
- Department of Radiation Oncology, Istanbul Oncology Hospital, Istanbul, Turkey; Department of Medical Physics, University of Yeditepe, Istanbul, Turkey
| | - Angela Davey
- Division of Cancer Sciences, The University of Manchester, Manchester, UK
| | - Pauline Dupuis
- Department of Radiation Oncology, Physics Unit, Centre Léon Bérard, Lyon, France
| | | | | | - Lone Hoffmann
- Department of Medical Physics, Aarhus University Hospital, Aarhus, Denmark; Department of Clinical Medicine, Faculty of Health Sciences, Aarhus University, Aarhus, Denmark
| | - Colin Kelly
- St Luke's Radiation Oncology Network, Dublin, Ireland
| | | | - Sarah Muscat
- Department of Medical Physics, Portsmouth Hospitals University NHS Trust, Portsmouth, UK
| | - Donna H Murrell
- Department of Oncology, Western University, London, Ontario, Canada; London Regional Cancer Program, London Health Sciences Centre, London, Ontario, Canada
| | - Jaime Pérez-Alija
- Servei de Radiofísica i Radioprotecció, Hospital de la Santa Creu i Sant Pau, Barcelona, Spain
| | - Catherine Palmer
- Department of Radiotherapy Physics, Norfolk and Norwich University Hospitals, NHS Foundation Trust, UK
| | - Lorenzo Placidi
- Department of Radiology, Radiation Oncology and Hematology, Fondazione Policlinico Universitario "A. Gemelli" IRCCS, Rome, Italy
| | - Marija Popovic
- Department of Medical Physics, McGill University Health Centre, Montreal, Quebec, Canada
| | - Heidi S Rønde
- Danish Centre for Particle Therapy, Aarhus University Hospital, Aarhus, Denmark
| | - Adam Selby
- South West Wales Cancer Centre, Swansea, Wales, UK
| | | | - Natasa Solomou
- Department of Radiotherapy Physics, Norfolk and Norwich University Hospitals, NHS Foundation Trust, UK
| | - Joep Stroom
- Department of Radiation Oncology, Champalimaud Centre for the Unknown, Lisbon, Portugal
| | | | | | - Ali Zaila
- Biomedical Physics Department, King Faisal Specialist Hospital and Research Center (KFSHRC), Riyadh, Saudi Arabia
| | - Ane L Appelt
- Department of Medical Physics, Leeds Teaching Hospitals NHS Trust, Leeds, UK; Leeds Institute of Medical Research at St James's, University of Leeds, Leeds, UK
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7
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Meffe G, Votta C, Turco G, Chillè E, Nardini M, Romano A, Chiloiro G, Panza G, Galetto M, Capotosti A, Moretti R, Gambacorta MA, Boldrini L, Indovina L, Placidi L. Impact of data transfer between treatment planning systems on dosimetric parameters. Phys Med 2024; 121:103369. [PMID: 38669811 DOI: 10.1016/j.ejmp.2024.103369] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/10/2023] [Revised: 03/27/2024] [Accepted: 04/21/2024] [Indexed: 04/28/2024] Open
Abstract
PURPOSE In radiotherapy it is often necessary to transfer a patient's DICOM (Digital Imaging and COmmunications in Medicine) dataset from one system to another for re-treatment, plan-summation or registration purposes. The aim of the study is to evaluate effects of dataset transfer between treatment planning systems. MATERIALS AND METHODS Twenty-five patients treated in a 0.35T MR-Linac (MRidian, ViewRay) for locally-advanced pancreatic cancer were enrolled. For each patient, a nominal dose distribution was optimized on the planning MRI. Each plan was daily re-optimized if needed to match the anatomy and exported from MRIdian-TPS (ViewRay Inc.) to Eclipse-TPS (Siemens-Varian). A comparison between the two TPSs was performed considering the PTV and OARs volumes (cc), as well as dose coverages and clinical constraints. RESULTS From the twenty-five enrolled patients, 139 plans were included in the data comparison. The median values of percentage PTV volume variation are 10.8 % for each fraction, while percentage differences of PTV coverage have a mean value of -1.4 %. The median values of the percentage OARs volume variation are 16.0 %, 7.0 %, 10.4 % and 8.5 % for duodenum, stomach, small and large bowel, respectively. The percentage variations of the dose constraints are 41.0 %, 52.7 % and 49.8 % for duodenum, stomach and small bowel, respectively. CONCLUSIONS This study has demonstrated a non-negligible variation in size and dosimetric parameters when datasets are transferred between TPSs. Such variations should be clinically considered. Investigations are focused on DICOM structure algorithm employed by the TPSs during the transfer to understand the cause of such variations.
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Affiliation(s)
- Guenda Meffe
- Fondazione Policlinico Universitario Agostino Gemelli IRCCS, Rome, Italy
| | - Claudio Votta
- Fondazione Policlinico Universitario Agostino Gemelli IRCCS, Rome, Italy
| | - Gabriele Turco
- Fondazione Policlinico Universitario Agostino Gemelli IRCCS, Rome, Italy
| | - Elena Chillè
- Università Cattolica del Sacro Cuore, Roma, Italy
| | - Matteo Nardini
- Fondazione Policlinico Universitario Agostino Gemelli IRCCS, Rome, Italy.
| | - Angela Romano
- Fondazione Policlinico Universitario Agostino Gemelli IRCCS, Rome, Italy
| | - Giuditta Chiloiro
- Fondazione Policlinico Universitario Agostino Gemelli IRCCS, Rome, Italy
| | - Giulia Panza
- Fondazione Policlinico Universitario Agostino Gemelli IRCCS, Rome, Italy
| | | | - Amedeo Capotosti
- Fondazione Policlinico Universitario Agostino Gemelli IRCCS, Rome, Italy
| | - Roberto Moretti
- Fondazione Policlinico Universitario Agostino Gemelli IRCCS, Rome, Italy
| | - Maria Antonietta Gambacorta
- Fondazione Policlinico Universitario Agostino Gemelli IRCCS, Rome, Italy; Università Cattolica del Sacro Cuore, Roma, Italy
| | - Luca Boldrini
- Fondazione Policlinico Universitario Agostino Gemelli IRCCS, Rome, Italy
| | - Luca Indovina
- Fondazione Policlinico Universitario Agostino Gemelli IRCCS, Rome, Italy
| | - Lorenzo Placidi
- Fondazione Policlinico Universitario Agostino Gemelli IRCCS, Rome, Italy
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8
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Franzese C, Balermpas P. Stereotactic ablative radiotherapy for treating primary head and neck cancer and locoregional recurrence: A comprehensive review of the literature. Clin Transl Radiat Oncol 2024; 46:100766. [PMID: 38590327 PMCID: PMC10999469 DOI: 10.1016/j.ctro.2024.100766] [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: 08/28/2023] [Revised: 02/04/2024] [Accepted: 03/21/2024] [Indexed: 04/10/2024] Open
Abstract
Introduction Although stereotactic ablative radiotherapy (SABR) has advance to standard-of-care for many different indications like lung and liver malignancies, it still remains in its infancy for treating head and neck cancer. Nevertheless there is a growing body of experience and evidence, which is summarized in this review Methods A thorough search of the literature was performed and critically reviewed both for SABR as a primary treatment as well as for treating locoregionally recurrent disease in a pre-irradiated field. Results There exist only few prospective data published so far for treating head and neck cancer with SABR. In the primary situation especially implementing SABR as a boost after definitive radiotherapy or a single-modality for locally limited, small glottic cancer appear promising. On the other hand, SABR can be a useful modality for treating local recurrence in a pre-irradiated field. However, caution is needed in the case of proximity to a pre-irradiated carotid artery or other serial organs at risk. Usually only limited gross volumes are treated with 3-6 fractions every other day and a cumulative dose of 24-44 Gy in dedicated radiosurgery platforms or modern linacs with the possibility of online image-guidance and adequate immobilsation. Conclusions SABR is an innovative, effective and promising treatment modality for small targets, especially in near proximity to organs at risk or in a pre-irradiated region. Prospective trials are further needed for this technique to become standard-of care.
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Affiliation(s)
- Ciro Franzese
- Department of Biomedical Sciences, Humanitas University, 20090 Pieve Emanuele, Italy
- Department of Radiotherapy and Radiosurgery, IRCCS Humanitas Research Hospital, Via Manzoni 56, 20089 Milan, Italy
| | - Panagiotis Balermpas
- Department of Radiation Oncology, University Hospital Zurich and University of Zurich, Rämistrasse 100, Zurich 8091, Switzerland
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9
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Fields EC. No Good Options, or Are There? Int J Radiat Oncol Biol Phys 2024; 118:888-889. [PMID: 38401974 DOI: 10.1016/j.ijrobp.2023.11.047] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2023] [Accepted: 11/19/2023] [Indexed: 02/26/2024]
Affiliation(s)
- Emma C Fields
- Department of Radiation Oncology, Virginia Commonwealth University, Richmond, Virginia
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10
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Massaccesi M, Fontana A, Palumbo I, Argenone A, De Santis MC, Masiello V, Pontoriero A, Ciabattoni A. Pattern of practice of re-irradiation for ipsilateral breast tumor recurrence in Italy: a survey by the Italian Association of Radiotherapy and Clinical Oncology (AIRO). Clin Transl Oncol 2024; 26:644-652. [PMID: 37515701 DOI: 10.1007/s12094-023-03289-0] [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: 02/25/2023] [Accepted: 07/17/2023] [Indexed: 07/31/2023]
Abstract
PURPOSE The Re-irradiation and the Breast Cancer Working Groups of the Italian Association of Radiotherapy and Clinical Oncology (AIRO) conducted a survey to provide an overview of the policies for breast cancer (BC) re-irradiation (re-RT) among the Italian radiotherapy (RT) centers. METHODS In October 2021, 183 RT centers were invited to answer a survey: after an initial section about general aspects, the questionnaire focused on radiation oncologists' (ROs) attitude toward re-RT in three different scenarios: ipsilateral breast tumor recurrence (IBTR) treated with second conservative surgery, IBTR treated with mastectomy and inoperable IBTR. Surveyed ROs were also asked to express their interest in being involved in a prospective trials. RESULTS Seventy-seven/183 (42.0%) centers answered the Survey, only one RO per center was requested to answer. In particular, 86.5% ROs declared to have performed "curative" re-RT for IBTR during the previous two years (2019-2020): 76.7% respondents administered re-RT after second BCS, 50.9% after mastectomy, and 48.1% for inoperable IBTR. Re-RT practice varied widely among centers in terms of treatment volumes, dose and fractionation schedules, techniques and dose-volume constraints for organs at risks (OARs). Forty-six participants (59.7%) expressed their interest in participating in a prospective study investigating BC re-RT. CONCLUSIONS About one out of three RT centers in Italy delivered re-RT for IBTR. Nevertheless, practice of re-RT varied widely among centers highlighting the needs for prospective studies to improve knowledge in this field.
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Affiliation(s)
- Mariangela Massaccesi
- Radiation Oncology Unit, Department of Radiology, Radiation Oncology and Hematology, Fondazione Policlinico Universitario Agostino Gemelli IRCCS, Rome, Italy
| | - Antonella Fontana
- Radiotherapy Department, Santa Maria Goretti Hospital, Latina, Italy
| | - Isabella Palumbo
- Radiation Oncology Section, Department of Medicine and Surgery, Sant'Andrea delle Fratte, University of Perugia and Perugia General Hospital, 06156, Perugia, Italy.
| | | | - Maria Carmen De Santis
- Radiation Oncology, Fondazione IRCCS Istituto Nazionale dei Tumori di Milano, Milan, Italy
| | - Valeria Masiello
- Radiation Oncology Unit, Department of Radiology, Radiation Oncology and Hematology, Fondazione Policlinico Universitario Agostino Gemelli IRCCS, Rome, Italy
| | - Antonio Pontoriero
- Radiation Oncology Unit, Department of Biomedical, Dental Science and Morphological and Functional Images, University of Messina, Messina, Italy
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11
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Ahmadsei M, Jegarajah V, Dal Bello R, Christ SM, Mayinger MM, Sabrina Stark L, Willmann J, Vogelius IR, Balermpas P, Andratschke N, Tanadini-Lang S, Guckenberger M. Dosimetric Analysis of Proximal Bronchial Tree Subsegments to Assess The Risk of Severe Toxicity After Stereotactic Body Radiation Therapy of Ultra-central Lung Tumors. Clin Transl Radiat Oncol 2024; 45:100707. [PMID: 38125648 PMCID: PMC10731610 DOI: 10.1016/j.ctro.2023.100707] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2023] [Revised: 08/17/2023] [Accepted: 11/30/2023] [Indexed: 12/23/2023] Open
Abstract
•Stereotactic body radiation therapy (SBRT) for ultra-central lung tumors is associated with high toxicity rates.•To evaluate differences in radiosensitivity within the proximal bronchial tree (PBT), the PBT was sub-segmented into seven anatomical sections.•A risk-adapted SBRT regimen of EQD2_10 = 54.4 Gy in 8 or 10 fractions results in excellent local control and low rates of severe toxicity.•Data from a recent meta-analysis, the NORDIC Hilus trial and dosimetric data from this study were combined to create a NTCP model.•A dose threshold of EQD2_3 = 100 Gy to the PBT or any of its subsegments is expected to result in low rates of severe bronchial toxicity.
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Affiliation(s)
- Maiwand Ahmadsei
- Department of Radiation Oncology, University Hospital Zurich, University of Zurich, Zurich, Switzerland
| | - Vinojaa Jegarajah
- Department of Radiation Oncology, University Hospital Zurich, University of Zurich, Zurich, Switzerland
| | - Riccardo Dal Bello
- Department of Radiation Oncology, University Hospital Zurich, University of Zurich, Zurich, Switzerland
| | - Sebastian M. Christ
- Department of Radiation Oncology, University Hospital Zurich, University of Zurich, Zurich, Switzerland
| | - Michael M. Mayinger
- Department of Radiation Oncology, University Hospital Zurich, University of Zurich, Zurich, Switzerland
| | - Luisa Sabrina Stark
- Department of Radiation Oncology, University Hospital Zurich, University of Zurich, Zurich, Switzerland
| | - Jonas Willmann
- Department of Radiation Oncology, University Hospital Zurich, University of Zurich, Zurich, Switzerland
- Center for Proton Therapy, Paul Scherrer Institute, ETH Domain, Villigen, Switzerland
| | - Ivan R. Vogelius
- Department of Oncology, Rigshospitalet, University of Copenhagen, Copenhagen, Denmark
| | - Panagiotis Balermpas
- Department of Radiation Oncology, University Hospital Zurich, University of Zurich, Zurich, Switzerland
| | - Nicolaus Andratschke
- Department of Radiation Oncology, University Hospital Zurich, University of Zurich, Zurich, Switzerland
| | - Stephanie Tanadini-Lang
- Department of Radiation Oncology, University Hospital Zurich, University of Zurich, Zurich, Switzerland
| | - Matthias Guckenberger
- Department of Radiation Oncology, University Hospital Zurich, University of Zurich, Zurich, Switzerland
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12
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Meyer S, Zhang L, Liu Y, Kuo LC, Hu YC, Yamada Y, Zarepisheh M, Zhang P, Cerviño L. Automated planning of stereotactic spine re-irradiation using cumulative dose limits. Phys Imaging Radiat Oncol 2024; 29:100547. [PMID: 38390589 PMCID: PMC10881437 DOI: 10.1016/j.phro.2024.100547] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2023] [Revised: 02/01/2024] [Accepted: 02/05/2024] [Indexed: 02/24/2024] Open
Abstract
Background and Purpose The lack of dedicated tools in commercial planning systems currently restricts efficient review and planning for re-irradiation. The aim of this study was to develop an automated re-irradiation planning framework based on cumulative doses. Materials and Methods We performed a retrospective study of 14 patients who received spine SBRT re-irradiation near a previously irradiated treatment site. A fully-automated workflow, DART (Dose Accumulation-based Re-irradiation Tool), was implemented within Eclipse by leveraging a combination of a dose accumulation script and a proprietary automated optimization algorithm. First, we converted the prior treatment dose into equivalent dose in 2 Gy fractions (EQD2) and mapped it to the current anatomy, utilizing deformable image registration. Subsequently, the intersection of EQD2 isodose lines with relevant organs at risk defines a series of optimization structures. During plan optimization, the residual allowable dose at a specified tissue tolerance was treated as a hard constraint. Results All DART plans met institutional physical and cumulative constraints and passed plan checks by qualified medical physicists. DART demonstrated significant improvements in target coverage over clinical plans, with an average increase in PTV D99% and V100% of 2.3 Gy [range -0.3-7.7 Gy] and 3.4 % [range -0.4 %-7.6 %] (p < 0.01, paired t-test), respectively. Moreover, high-dose spillage (>105 %) outside the PTV was reduced by up to 7 cm3. The homogeneity index for DART plans was improved by 19 % (p < 0.001). Conclusions DART provides a powerful framework to achieve more tailored re-irradiation plans by accounting for dose distributions from the previous treatments. The superior plan quality could improve the therapeutic ratio for re-irradiation patients.
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Affiliation(s)
- Sebastian Meyer
- Department of Medical Physics, Memorial Sloan Kettering Cancer Center, New York, NY, United States
| | - Lei Zhang
- Department of Medical Physics, Memorial Sloan Kettering Cancer Center, New York, NY, United States
| | - Yilin Liu
- Department of Medical Physics, Memorial Sloan Kettering Cancer Center, New York, NY, United States
| | - Li Cheng Kuo
- Department of Medical Physics, Memorial Sloan Kettering Cancer Center, New York, NY, United States
| | - Yu-Chi Hu
- Department of Medical Physics, Memorial Sloan Kettering Cancer Center, New York, NY, United States
| | - Yoshiya Yamada
- Department of Radiation Oncology, Memorial Sloan Kettering Cancer Center, New York, NY, United States
| | - Masoud Zarepisheh
- Department of Medical Physics, Memorial Sloan Kettering Cancer Center, New York, NY, United States
| | - Pengpeng Zhang
- Department of Medical Physics, Memorial Sloan Kettering Cancer Center, New York, NY, United States
| | - Laura Cerviño
- Department of Medical Physics, Memorial Sloan Kettering Cancer Center, New York, NY, United States
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13
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Nenoff L, Amstutz F, Murr M, Archibald-Heeren B, Fusella M, Hussein M, Lechner W, Zhang Y, Sharp G, Vasquez Osorio E. Review and recommendations on deformable image registration uncertainties for radiotherapy applications. Phys Med Biol 2023; 68:24TR01. [PMID: 37972540 PMCID: PMC10725576 DOI: 10.1088/1361-6560/ad0d8a] [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] [Received: 04/11/2023] [Revised: 10/30/2023] [Accepted: 11/15/2023] [Indexed: 11/19/2023]
Abstract
Deformable image registration (DIR) is a versatile tool used in many applications in radiotherapy (RT). DIR algorithms have been implemented in many commercial treatment planning systems providing accessible and easy-to-use solutions. However, the geometric uncertainty of DIR can be large and difficult to quantify, resulting in barriers to clinical practice. Currently, there is no agreement in the RT community on how to quantify these uncertainties and determine thresholds that distinguish a good DIR result from a poor one. This review summarises the current literature on sources of DIR uncertainties and their impact on RT applications. Recommendations are provided on how to handle these uncertainties for patient-specific use, commissioning, and research. Recommendations are also provided for developers and vendors to help users to understand DIR uncertainties and make the application of DIR in RT safer and more reliable.
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Affiliation(s)
- Lena Nenoff
- Department of Radiation Oncology, Massachusetts General Hospital, Boston, MA, United States of America
- Harvard Medical School, Boston, MA, United States of America
- 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—OncoRay, Dresden, Germany
| | - Florian Amstutz
- Department of Physics, ETH Zurich, Switzerland
- Center for Proton Therapy, Paul Scherrer Institute, Villigen PSI, Switzerland
- Division of Medical Radiation Physics and Department of Radiation Oncology, Inselspital, Bern University Hospital, and University of Bern, Bern, Switzerland
| | - Martina Murr
- Section for Biomedical Physics, Department of Radiation Oncology, University of Tübingen, Germany
| | | | - Marco Fusella
- Department of Radiation Oncology, Abano Terme Hospital, Italy
| | - Mohammad Hussein
- Metrology for Medical Physics, National Physical Laboratory, Teddington, United Kingdom
| | - Wolfgang Lechner
- Department of Radiation Oncology, Medical University of Vienna, Austria
| | - Ye Zhang
- Center for Proton Therapy, Paul Scherrer Institute, Villigen PSI, Switzerland
| | - Greg Sharp
- Department of Radiation Oncology, Massachusetts General Hospital, Boston, MA, United States of America
- Harvard Medical School, Boston, MA, United States of America
| | - Eliana Vasquez Osorio
- Division of Cancer Sciences, The University of Manchester, Manchester, United Kingdom
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14
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Miszczyk M, Suleja A, Sobel S, Stec M, Chyrek AJ, Kolbusz M, Spałek M, Nasiek A, Stankiewicz M, Lelek P, Moll M, Kluska A, Kazalski D, Saniewski P, Kaminiów K, Burchardt WM, Wojcieszek P, Chicheł A, Cichoń P, Krzysztofiak T. Salvage re-irradiation in non-melanoma skin cancers: A multicenter analysis. Radiother Oncol 2023; 189:109945. [PMID: 37806558 DOI: 10.1016/j.radonc.2023.109945] [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: 07/17/2023] [Revised: 09/24/2023] [Accepted: 09/30/2023] [Indexed: 10/10/2023]
Abstract
BACKGROUND AND PURPOSE We conducted a multicentre real-world study to assess the outcomes of radical salvage re-irradiation for non-melanoma skin cancer (nMSC) recurrences following definitive or postoperative radiotherapy. MATERIALS AND METHODS Data on patients treated between 2006 and 2022 with re-irradiation for nMSCs were retrospectively collected from five high-volume brachytherapy centers. The primary endpoint was local control (LC). Secondary endpoints included overall survival, progression-free survival, and adverse events (AEs). The Kaplan-Meier estimator and Cox Proportional-Hazards Model were utilised in the analysis. RESULTS A total of 58 patients with a median age of 78.4 years with recurrences of previously irradiated nMSC in the head and neck region were included in the analysis. The majority had cutaneous basal cell carcinoma (BCC; 91.4%), and were irradiated with high-dose-rate brachytherapy (HDR-BT; 91.4%). The most common locations included the nasal region (36.2%) and external ear (18.9%). The 1-year LC was 73.1% and decreased to 41.7% at three years. The size of the re-irradiated lesion was the single independent prognostic factor in Cox analysis (per mm; HR 1.07; 95% CI 1.04-1.11; p < 0.001). Grade 3 or worse AEs were reported in 7 cases (12.1%). CONCLUSION Re-irradiation for nMSCs, predominantly administered with brachytherapy for radiorecurrent BCC, is associated with high recurrence rates, and the risk of failure significantly increases with the size of the treated lesion. Re-irradiation could be an option for selected elderly patients with small, localised, inoperable recurrences after RT to achieve local control or defer systemic treatment; however, prospective trials are necessary to confirm its safety and efficacy.
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Affiliation(s)
- Marcin Miszczyk
- IIIrd Radiotherapy and Chemotherapy Department, Maria Skłodowska-Curie National Research Institute of Oncology, Wybrzeże Armii Krajowej 15, 44-102 Gliwice, Poland; Department of Radiation Oncology, Comprehensive Cancer Center, Medical University of Vienna, Währinger Gürtel 18-20, 1090 Vienna, Austria.
| | - Agata Suleja
- IIIrd Radiotherapy and Chemotherapy Department, Maria Skłodowska-Curie National Research Institute of Oncology, Wybrzeże Armii Krajowej 15, 44-102 Gliwice, Poland; II Department of Radiotherapy, Maria Skłodowska-Curie National Research Institute of Oncology Warsaw Branch, Wawelska 15/B, 00-001 Warszawa, Poland
| | - Szymon Sobel
- IIIrd Radiotherapy and Chemotherapy Department, Maria Skłodowska-Curie National Research Institute of Oncology, Wybrzeże Armii Krajowej 15, 44-102 Gliwice, Poland
| | - Maria Stec
- IIIrd Radiotherapy and Chemotherapy Department, Maria Skłodowska-Curie National Research Institute of Oncology, Wybrzeże Armii Krajowej 15, 44-102 Gliwice, Poland
| | - Artur Jan Chyrek
- Brachytherapy Department, Greater Poland Cancer Centre, Garbary 15, 61-866 Poznań, Poland; Electroradiology Department, Poznań University of Medical Sciences, Garbary 15, 61-866 Poznań, Poland
| | - Mirosław Kolbusz
- Brachytherapy Department, Subcarpathian Cancer Center, ks Bielawskiego 18, 36-200 Brzozów, Poland
| | - Mateusz Spałek
- II Department of Radiotherapy, Maria Skłodowska-Curie National Research Institute of Oncology Warsaw Branch, Wawelska 15/B, 00-001 Warszawa, Poland
| | - Aleksandra Nasiek
- IIIrd Radiotherapy and Chemotherapy Department, Maria Skłodowska-Curie National Research Institute of Oncology, Wybrzeże Armii Krajowej 15, 44-102 Gliwice, Poland
| | - Magdalena Stankiewicz
- Brachytherapy Department, Maria Skłodowska-Curie National Research Institute of Oncology Gliwice Branch, Wybrzeże Armii Krajowej 15, 44-102 Gliwice, Poland
| | - Piotr Lelek
- Brachytherapy Department, Maria Skłodowska-Curie National Research Institute of Oncology Gliwice Branch, Wybrzeże Armii Krajowej 15, 44-102 Gliwice, Poland
| | - Matthias Moll
- Department of Radiation Oncology, Comprehensive Cancer Center, Medical University of Vienna, Währinger Gürtel 18-20, 1090 Vienna, Austria
| | - Adam Kluska
- Brachytherapy Department, Greater Poland Cancer Centre, Garbary 15, 61-866 Poznań, Poland
| | - Damian Kazalski
- Brachytherapy Department, Subcarpathian Cancer Center, ks Bielawskiego 18, 36-200 Brzozów, Poland
| | - Piotr Saniewski
- II Department of Radiotherapy, Maria Skłodowska-Curie National Research Institute of Oncology Warsaw Branch, Wawelska 15/B, 00-001 Warszawa, Poland
| | - Konrad Kaminiów
- IIIrd Radiotherapy and Chemotherapy Department, Maria Skłodowska-Curie National Research Institute of Oncology, Wybrzeże Armii Krajowej 15, 44-102 Gliwice, Poland; Clinical Department of Internal Diseases, Dermatology and Allergology in Zabrze, Medical University of Silesia, 40-055 Katowice, Poland
| | - Wojciech Maria Burchardt
- Brachytherapy Department, Greater Poland Cancer Centre, Garbary 15, 61-866 Poznań, Poland; Electroradiology Department, Poznań University of Medical Sciences, Garbary 15, 61-866 Poznań, Poland
| | - Piotr Wojcieszek
- Brachytherapy Department, Maria Skłodowska-Curie National Research Institute of Oncology Gliwice Branch, Wybrzeże Armii Krajowej 15, 44-102 Gliwice, Poland
| | - Adam Chicheł
- Brachytherapy Department, Greater Poland Cancer Centre, Garbary 15, 61-866 Poznań, Poland
| | - Piotr Cichoń
- Brachytherapy Department, Subcarpathian Cancer Center, ks Bielawskiego 18, 36-200 Brzozów, Poland
| | - Tomasz Krzysztofiak
- Brachytherapy Department, Maria Skłodowska-Curie National Research Institute of Oncology Gliwice Branch, Wybrzeże Armii Krajowej 15, 44-102 Gliwice, Poland
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15
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Willmann J, Appelt AL, Balermpas P, Baumert BG, de Ruysscher D, Hoyer M, Hurkmans C, Kaidar-Person O, Meattini I, Niyazi M, Poortmans P, Reynaert N, Tandini-Lang S, van der Linden Y, Nieder C, Andratschke N. Re-irradiation in clinical practice: Results of an international patterns of care survey within the framework of the ESTRO-EORTC E 2-RADIatE platform. Radiother Oncol 2023; 189:109947. [PMID: 37806559 DOI: 10.1016/j.radonc.2023.109947] [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] [Received: 08/01/2023] [Revised: 09/17/2023] [Accepted: 10/01/2023] [Indexed: 10/10/2023]
Abstract
BACKGROUND Re-irradiation is an increasingly utilized treatment for recurrent, metastatic or new malignancies after previous radiotherapy. It is unclear how re-irradiation is applied in clinical practice. We aimed to investigate the patterns of care of re-irradiation internationally. MATERIAL/METHODS A cross-sectional survey conducted between March and September 2022. The survey was structured into six sections, each corresponding to a specific anatomical region. Participants were instructed to complete the sections of their clinical expertise. A total of 15 multiple-choice questions were included in each section, addressing various aspects of the re-irradiation process. The online survey targeted radiation and clinical oncologists and was endorsed by the European Society for Radiotherapy and Oncology (ESTRO) and the European Organisation for Research and Treatment of Cancer (EORTC). RESULTS 371 physicians from 55 countries across six continents participated. Participants had a median professional experience of 16 years, and the majority (60%) were affiliated with an academic hospital. The brain region was the most common site for re-irradiation (77%), followed by the pelvis (65%) and head and neck (63%). Prolonging local control was the most common goal (90-96% across anatomical regions). The most common minimum interval between previous radiotherapy and re-irradiation was 6-12 months (45-55%). Persistent grade 3 or greater radiation-induced toxicity (77-80%) was the leading contraindication. Variability in organs at risk dose constraints for re-irradiation was observed. Advanced imaging modalities and conformal radiotherapy techniques were predominantly used. A scarcity of institutional guidelines for re-irradiation was reported (16-19%). Participants from European centers more frequently applied thoracic and abdominal re-irradiation. Indications did not differ between academic and non-academic hospitals. CONCLUSION This study highlights the heterogeneity in re-irradiation practices across anatomical regions and emphasizes the need for high-quality evidence from prospective studies to guide treatment decisions and derive safe cumulative dose constraints.
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Affiliation(s)
- Jonas Willmann
- Department of Radiation Oncology, University Hospital Zurich, University of Zurich, Zurich, Switzerland.
| | - Ane L Appelt
- Leeds Institute of Medical Research at St James's, University of Leeds, Leeds, UK
| | - Panagiotis Balermpas
- Department of Radiation Oncology, University Hospital Zurich, University of Zurich, Zurich, Switzerland
| | - Brigitta G Baumert
- Institute of Radiation-Oncology, Cantonal Hospital Graubünden, Chur, Switzerland
| | - Dirk de Ruysscher
- Maastricht University Medical Center, Department of Radiation Oncology (Maastro Clinic), School for Oncology and Developmental Biology (GROW), Maastricht and Department of Radiotherapy, Erasmus MC, Rotterdam, the Netherlands
| | - Morten Hoyer
- Danish Centre for Particle Therapy, Aarhus University Hospital, Aarhus, Denmark
| | - Coen Hurkmans
- Department of Radiation Oncology, Catharina Hospital Eindhoven, Eindhoven, the Netherlands
| | - Orit Kaidar-Person
- Breast Cancer Radiation Therapy Unit, Sheba Medical Center, Ramat Gan, Israel And Sackler School of Medicine, Tel-Aviv University, Tel-Aviv, Israel
| | - Icro Meattini
- Department of Experimental and Clinical Biomedical Sciences "M. Serio", University of Florence, Florence, Italy; Radiation Oncology Unit, Oncology Department, Azienda Ospedaliero-Universitaria Careggi, Florence, Italy
| | - Maximilian Niyazi
- Department of Radiation Oncology, University Hospital Tübingen, Tübingen, Germany; Department of Radiation Oncology, LMU University Hospital, LMU Munich, Munich, Germany
| | - Philip Poortmans
- Department of Radiation Oncology, Iridium Netwerk, Wilrijk-Antwerp, Belgium; Faculty of Medicine and Health Sciences, University of Antwerp, Wilrijk-Antwerp, Belgium
| | - Nick Reynaert
- Department of Medical Physics, Institut Jules Bordet, Brussels, Belgium
| | - Stephanie Tandini-Lang
- Department of Radiation Oncology, University Hospital Zurich, University of Zurich, Zurich, Switzerland
| | - Yvette van der Linden
- Department of Radiotherapy, Leiden University Medical Centre, Leiden, the Netherlands
| | - Carsten Nieder
- Department of Oncology and Palliative Medicine, Nordland Hospital Trust, Bodø, Norway; Department of Clinical Medicine, Faculty of Health Sciences, UiT - The Arctic University of Norway, Tromsø, Norway
| | - Nicolaus Andratschke
- Department of Radiation Oncology, University Hospital Zurich, University of Zurich, Zurich, Switzerland
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16
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Østergaard DE, Wahlstedt I, Jørgensen M, Kjærsgaard M, Mathiasen R, Nysom K, Sehested A, Vogelius IR, Maraldo MV. Dose-accumulation analysis of target and organs at risk with clinical outcome after re-irradiation of diffuse midline glioma. Acta Oncol 2023; 62:1526-1530. [PMID: 37733582 DOI: 10.1080/0284186x.2023.2258271] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2023] [Accepted: 09/08/2023] [Indexed: 09/23/2023]
Affiliation(s)
- Daniella Elisabet Østergaard
- Section of Radiotherapy, Department of Oncology, Copenhagen University Hospital, Copenhagen, Denmark
- Faculty of Health and Medical Sciences, Copenhagen University, Copenhagen, Denmark
| | - Isak Wahlstedt
- Section of Radiotherapy, Department of Oncology, Copenhagen University Hospital, Copenhagen, Denmark
| | - Morten Jørgensen
- Section of Radiotherapy, Department of Oncology, Copenhagen University Hospital, Copenhagen, Denmark
| | - Mimi Kjærsgaard
- Department of Paediatric Haematology and Oncology, Copenhagen University Hospital, Copenhagen, Denmark
| | - Rene Mathiasen
- Department of Paediatric Haematology and Oncology, Copenhagen University Hospital, Copenhagen, Denmark
| | - Karsten Nysom
- Department of Paediatric Haematology and Oncology, Copenhagen University Hospital, Copenhagen, Denmark
| | - Astrid Sehested
- Department of Paediatric Haematology and Oncology, Copenhagen University Hospital, Copenhagen, Denmark
| | - Ivan Richter Vogelius
- Section of Radiotherapy, Department of Oncology, Copenhagen University Hospital, Copenhagen, Denmark
| | - Maja Vestmø Maraldo
- Section of Radiotherapy, Department of Oncology, Copenhagen University Hospital, Copenhagen, Denmark
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Sugawara K, Oka D, Hara H, Yoshii T, Ushijima H, Kudo S, Fukuda T. Survival outcomes of esophageal cancer patients with recurrence after curative treatments. BMC Cancer 2023; 23:1051. [PMID: 37915027 PMCID: PMC10619310 DOI: 10.1186/s12885-023-11568-w] [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: 06/22/2023] [Accepted: 10/26/2023] [Indexed: 11/03/2023] Open
Abstract
BACKGROUND Little is known about predictive factors for survival outcomes of esophageal carcinoma (EC) patients who developed recurrence after undergoing multimodal therapies. We aimed to investigate long-term outcomes and identify prognostic factors in patients with relapsed EC, focusing especially on those with oligometastasis (OM). METHODS EC patients who developed recurrence after curative treatments (radical esophagectomy or definitive chemoradiotherapy (dCRT)) between 2010 and 2017 were reviewed. Multivariate Cox hazards models were applied to determine independent predictors of poor post-recurrence survival (PRS). RESULTS In total, 178 patients were included. The median PRS was 12.9 months. Of the 178 patients, 98 had OM and 80 non-OM (NOM) disease. The survival outcomes of patients with OM were significantly better than those of patients with NOM (P < 0.01). Surgical treatments provided significantly better survival outcomes than CRT or chemo-/radiotherapy alone (3-year overall survival (OS); 78.1% vs. 42.5% vs. 28.9%, P < 0.01), mainly due to prolonging survival after the recurrence (3-year PRS 62.9% vs. 16.7% vs. 16.2%, P < 0.01). Multivariable analysis focusing on patients with OM revealed cStage III-IV disease (P < 0.01), high GPS at the time of recurrence (P = 0.02) and non-curative treatments (P < 0.01), to be independently associated with poor PRS. In contrast, in patients with NOM, no independent predictors for poor PRS were identified. CONCLUSIONS The survival outcomes of patients with relapsed EC remain poor. Surgical treatments could provide survival benefits for patients with recurrent EC, especially for patients with OM.
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Affiliation(s)
- Kotaro Sugawara
- Department of Gastroenterological Surgery, Saitama Cancer Center Hospital, 780 Komuro Inamachi, Kitaadachi-gun, Saitama, 362-0806, Japan.
| | - Daiji Oka
- Department of Gastroenterological Surgery, Saitama Cancer Center Hospital, 780 Komuro Inamachi, Kitaadachi-gun, Saitama, 362-0806, Japan
| | - Hiroki Hara
- Department of Gastroenterology, Saitama Cancer Center, Saitama, Japan
| | - Takako Yoshii
- Department of Gastroenterology, Saitama Cancer Center, Saitama, Japan
| | - Hiroki Ushijima
- Department of Radiation Oncology, Saitama Cancer Center, Saitama, Japan
| | - Shigehiro Kudo
- Department of Radiation Oncology, Saitama Cancer Center, Saitama, Japan
| | - Takashi Fukuda
- Department of Gastroenterological Surgery, Saitama Cancer Center Hospital, 780 Komuro Inamachi, Kitaadachi-gun, Saitama, 362-0806, Japan
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18
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Ahmadsei M, Christ SM, Kroese TE, Kühnis A, Willmann J, Balermpas P, Andratschke N, Tanadini-Lang S, Guckenberger M. Efficacy and safety analysis in metastatic cancer patients treated with multiple courses of repeat radiation therapy. Clin Transl Radiat Oncol 2023; 43:100687. [PMID: 37867613 PMCID: PMC10589769 DOI: 10.1016/j.ctro.2023.100687] [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: 05/01/2023] [Revised: 09/18/2023] [Accepted: 09/30/2023] [Indexed: 10/24/2023] Open
Abstract
Background and purpose Due to advances in oncology, a growing proportion of patients is treated with repetitive courses of radiotherapy. The aim of this study is to analyze whether radiotherapy maintains its safety and efficacy profile in patients treated with multiple repeat courses of irradiation. Material and methods All patients treated between 2011 and 2019 at our institution were screened for a minimum of five repeat irradiation courses, to analyze treatment characteristics, survival, safety and efficacy. The type of re-irradiation was classified according to ESTRO-EORTC consensus guidelines. Results A total of n = 112 patients receiving n = 660 radiotherapy courses were included in this retrospective cohort study. The most frequent primary tumors were lung cancer in 41.9 % (n = 47) and malignant melanoma in 8.9 % (n = 10). The most frequent re-irradiation types were repeat irradiation and Type 2 re-irradiation in 309 (46.8 %) and 113 (17.1 %) cases, respectively. Median survival after the first course of radiotherapy was 3.6 (0.3-13.4) years. Response to radiotherapy was observed in 548 (83.0 %) cases and CTCAE toxicity grade ≥ 3 was observed in 21 (3.2 %) cases. An increasing number of RT courses (HR: 1.30, p=<0.0001), Type 1 re-irradiation (HR 3.50, p = 0.008) and KPS ≤ 80 % (HR: 2.02, p = 0.002) were associated with significantly worse treatment responses. Toxicity rates remained stable with increasing numbers of RT courses. Conclusion Multiple courses of repeat radiotherapy maintain a favorable therapeutic ratio of high response combined with reasonable safety profile.
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Affiliation(s)
- Maiwand Ahmadsei
- Department of Radiation Oncology and Competence Center for Palliative Care, University Hospital and University of Zurich, Zurich, Switzerland
| | - Sebastian M. Christ
- Department of Radiation Oncology and Competence Center for Palliative Care, University Hospital and University of Zurich, Zurich, Switzerland
| | - Tiuri E. Kroese
- Department of Radiation Oncology and Competence Center for Palliative Care, University Hospital and University of Zurich, Zurich, Switzerland
| | - Anja Kühnis
- Department of Radiation Oncology and Competence Center for Palliative Care, University Hospital and University of Zurich, Zurich, Switzerland
| | - Jonas Willmann
- Department of Radiation Oncology and Competence Center for Palliative Care, University Hospital and University of Zurich, Zurich, Switzerland
- Center for Proton Therapy, Paul Scherrer Institute, ETH Domain, Villigen, Switzerland
| | - Panagiotis Balermpas
- Department of Radiation Oncology and Competence Center for Palliative Care, University Hospital and University of Zurich, Zurich, Switzerland
| | - Nicolaus Andratschke
- Department of Radiation Oncology and Competence Center for Palliative Care, University Hospital and University of Zurich, Zurich, Switzerland
| | - Stephanie Tanadini-Lang
- Department of Radiation Oncology and Competence Center for Palliative Care, University Hospital and University of Zurich, Zurich, Switzerland
| | - Matthias Guckenberger
- Department of Radiation Oncology and Competence Center for Palliative Care, University Hospital and University of Zurich, Zurich, Switzerland
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Xin Z, Liu Q, Ai D, Chen K, Mariamidze E, Sumon MA, Devnani B, Pihlak R, Zhu H, Zhao K. Radiotherapy for Advanced Esophageal Cancer: from Palliation to Curation. Curr Treat Options Oncol 2023; 24:1568-1579. [PMID: 37812321 DOI: 10.1007/s11864-023-01134-8] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 09/03/2023] [Indexed: 10/10/2023]
Abstract
OPINION STATEMENT Esophageal cancer is a global health problem, which is 7th most common and 6th most deadly cancer. It has been the era of immuno-oncology for esophageal cancer management. Radiation therapy has been one of the key local therapeutic approaches for esophageal cancer treatment, while its role in advanced disease is challenging and debatable. There have been emerging clinical and translational studies of radiation therapy in recurrent or metastatic esophageal cancer. Immunotherapy has been established the standard care of 1st and 2nd line systemic therapies of advanced esophageal cancer, and the development of tumor immunity has opened a new chapter for the esophageal cancer radiation therapy. The current review will summarize the classic radiation therapy research in advanced esophageal cancer, as well as the most recent key findings. The subtitles will cover palliative radiotherapy for dysphagia, re-radiation for recurrent disease, oligo-focal disease management and stereotactic radiation therapy, and radiotherapy with immunotherapy. Radiotherapy plays vital role in multidisciplinary management of advanced EC. External or intratumoral irradiation has been used for palliation of dysphagia and improving QOL in esophageal cancer patients traditionally, while recent clinical and technical advance enables radiotherapy to be considered in recurrent or metastatic disease for curation attention. Novel clinical and translational investigation is opening a new chapter of radiotherapy with immunotherapy for benefiting advanced EC patients.
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Affiliation(s)
- Zhuocheng Xin
- Department of Radiation Oncology, Fudan University Shanghai Cancer Center, Shanghai, China
- Department of Oncology, Shanghai Medical College, Fudan University, Shanghai, China
- Shanghai Clinical Research Center for Radiation Oncology, Shanghai, China
- Shanghai Key Laboratory of Radiation Oncology, 270 DongAn Road, Shanghai, 200032, China
| | - Qi Liu
- Department of Radiation Oncology, Fudan University Shanghai Cancer Center, Shanghai, China
- Department of Oncology, Shanghai Medical College, Fudan University, Shanghai, China
- Shanghai Clinical Research Center for Radiation Oncology, Shanghai, China
- Shanghai Key Laboratory of Radiation Oncology, 270 DongAn Road, Shanghai, 200032, China
| | - Dashan Ai
- Department of Radiation Oncology, Fudan University Shanghai Cancer Center, Shanghai, China
- Department of Oncology, Shanghai Medical College, Fudan University, Shanghai, China
- Shanghai Clinical Research Center for Radiation Oncology, Shanghai, China
- Shanghai Key Laboratory of Radiation Oncology, 270 DongAn Road, Shanghai, 200032, China
| | - Ke Chen
- Department of Oncology, Shanghai Medical College, Fudan University, Shanghai, China
- Department of Endoscopy, Fudan University Shanghai Cancer Center, Shanghai, China
| | - Elene Mariamidze
- Oncology and Hematology Department, Research Institute of Clinical Medicine After Academician F. Todua, Tbilisi, Georgia
| | - Mostafa Aziz Sumon
- Department of Radiation Oncology, Kurmitola General Hospital, Dhaka, Bangladesh
| | - Bharti Devnani
- Department of Radiotherapy and Oncology, All India Institute of Medical Sciences, New Delhi, India
| | - Rille Pihlak
- Medical Oncology Department, St Bartholomew's Hospital, London, UK
| | - Hongcheng Zhu
- Department of Radiation Oncology, Fudan University Shanghai Cancer Center, Shanghai, China.
- Department of Oncology, Shanghai Medical College, Fudan University, Shanghai, China.
- Shanghai Clinical Research Center for Radiation Oncology, Shanghai, China.
- Shanghai Key Laboratory of Radiation Oncology, 270 DongAn Road, Shanghai, 200032, China.
| | - Kuaile Zhao
- Department of Radiation Oncology, Fudan University Shanghai Cancer Center, Shanghai, China.
- Department of Oncology, Shanghai Medical College, Fudan University, Shanghai, China.
- Shanghai Clinical Research Center for Radiation Oncology, Shanghai, China.
- Shanghai Key Laboratory of Radiation Oncology, 270 DongAn Road, Shanghai, 200032, China.
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Gaito S, Burnet NG, Aznar MC, Marvaso G, Jereczek-Fossa BA, Crellin A, Indelicato D, Pan S, Colaco R, Rieu R, Smith E, Whitfield G. Proton Beam Therapy in the Reirradiation Setting of Brain and Base of Skull Tumour Recurrences. Clin Oncol (R Coll Radiol) 2023; 35:673-681. [PMID: 37574418 DOI: 10.1016/j.clon.2023.07.010] [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: 06/14/2023] [Revised: 07/04/2023] [Accepted: 07/25/2023] [Indexed: 08/15/2023]
Abstract
The therapeutic management of local tumour recurrence after a first course of radical radiotherapy is always complex. Surgery and reirradiation carry increased morbidity due to radiation-induced tissue changes. Proton beam therapy (PBT) might be advantageous in the reirradiation setting, thanks to its distinct physical characteristics. Here we systematically reviewed the use of PBT in the management of recurrent central nervous system (CNS) and base of skull (BoS) tumours, as published in the literature. The research question was framed following the Population, Intervention, Comparison and Outcomes (PICO) criteria: the population of the study was cancer patients with local disease recurrence in the CNS or BoS; the intervention was radiation treatment with PBT; the outcomes of the study focused on the clinical outcomes of PBT in the reirradiation setting of local tumour recurrences of the CNS or BoS. The identification stage resulted in 222 records in Embase and 79 in Medline as of March 2023. Sixty-eight duplicates were excluded at this stage and 56 were excluded after screening as not relevant, not in English or not full-text articles. Twelve full-text articles were included in the review and are presented according to the site of disease, namely BoS, brain or both brain and BoS. This review showed that reirradiation of brain/BoS tumour recurrences with PBT can provide good local control with acceptable toxicity rates. However, reirradiation of tumour recurrences in the CNS or BoS setting needs to consider several factors that can increase the risk of toxicities. Therefore, patient selection is crucial. Randomised evidence is needed to select the best radiation modality in this group of patients.
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Affiliation(s)
- S Gaito
- Proton Clinical Outcomes Unit, The Christie NHS Proton Beam Therapy Centre, Manchester, UK; Division of Cancer Sciences, School of Medical Sciences, Faculty of Biology, Medicine and Health, The University of Manchester, Manchester, UK; Department of Proton Beam Therapy, The Christie Proton Beam Therapy Centre, Manchester, UK.
| | - N G Burnet
- Department of Proton Beam Therapy, The Christie Proton Beam Therapy Centre, Manchester, UK
| | - M C Aznar
- Division of Cancer Sciences, School of Medical Sciences, Faculty of Biology, Medicine and Health, The University of Manchester, Manchester, UK
| | - G Marvaso
- Department of Oncology and Hemato-oncology, University of Milan, Milan, Italy; Department of Radiation Oncology, IEO European Institute of Oncology IRCCS, 20126 Milan, Italy
| | - B A Jereczek-Fossa
- Department of Oncology and Hemato-oncology, University of Milan, Milan, Italy; Department of Radiation Oncology, IEO European Institute of Oncology IRCCS, 20126 Milan, Italy
| | - A Crellin
- National Lead Proton Beam Therapy NHSe, UK
| | - D Indelicato
- Department of Radiation Oncology, University of Florida, Jacksonville, Florida, USA
| | - S Pan
- Department of Proton Beam Therapy, The Christie Proton Beam Therapy Centre, Manchester, UK
| | - R Colaco
- Department of Proton Beam Therapy, The Christie Proton Beam Therapy Centre, Manchester, UK
| | - R Rieu
- The Institute of Cancer Research, London, UK; The Royal Marsden Hospital, London, UK
| | - E Smith
- Proton Clinical Outcomes Unit, The Christie NHS Proton Beam Therapy Centre, Manchester, UK; Division of Cancer Sciences, School of Medical Sciences, Faculty of Biology, Medicine and Health, The University of Manchester, Manchester, UK; Department of Proton Beam Therapy, The Christie Proton Beam Therapy Centre, Manchester, UK
| | - G Whitfield
- Division of Cancer Sciences, School of Medical Sciences, Faculty of Biology, Medicine and Health, The University of Manchester, Manchester, UK; Department of Proton Beam Therapy, The Christie Proton Beam Therapy Centre, Manchester, UK
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21
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Ehret F, Wolfgang J, Allwohn L, Onken J, Wasilewski D, Roohani S, Oertel J, Zips D, Kaul D. Outcomes of Isocitrate Dehydrogenase Wild Type Glioblastoma after Re-irradiation. Clin Transl Radiat Oncol 2023; 42:100653. [PMID: 37502699 PMCID: PMC10369398 DOI: 10.1016/j.ctro.2023.100653] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2023] [Revised: 06/04/2023] [Accepted: 06/06/2023] [Indexed: 07/29/2023] Open
Abstract
Purpose Glioblastomas (GBM) are the most common malignant primary brain tumors in adults and have a dismal prognosis. Patients frequently suffer from local tumor recurrences, with limited therapeutic options. Re-irradiation represents a possible intervention, but given the recent 5th edition of the World Health Organization classification of central nervous system tumors, studies in isocitrate dehydrogenase wild type (IDH-wt) cohorts undergoing a second course of radiotherapy remain limited. Herein, we sought to describe our institutional experience and outcomes after GBM IDH-wt re-irradiation. Materials and Methods GBM patients with confirmed IDH-wt status undergoing re-irradiation were included in this single-center, retrospective analysis. Results A total of 88 patients were analyzed. The median clinical and radiographic follow-up periods were 4.6 months and 4.4 months, respectively. Most patients had a Karnofsky performance status of at least 80% (n = 57). The median biologically effective dose and 2 Gy equivalent dose (EQD2) for re-irradiations, assuming an α/β ratio of 10 Gy for GBM, were 51.4 and 42.8 Gy, respectively. In total, 71 deaths were recorded. The median overall survival (OS) was 8.0 months. Multivariable Cox regression of OS revealed a positive influence of gross total resection vs. biopsy or no resection (hazard ratio: 0.43, p = 0.02). The median progression-free survival (PFS) was 5.9 months. The multivariable Cox regression for PFS did not detect any significant factors. No clear evidence of radiation necrosis was recorded during the available follow-up. However, only a minority (n = 4) of patients underwent surgery after re-irradiation, none showing histopathological proof of radiation necrosis. Conclusion The prognosis for recurrent IDH-wt GBM after re-irradiation is poor. Patients who are amenable and able to undergo re-resection may have a favorable OS. A second course of radiotherapy with a moderate cumulative EQD2 and small- to medium-sized planning target volumes appeared safe regarding the occurrence of radiation necrosis.
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Affiliation(s)
- Felix Ehret
- Berlin Institute of Health at Charité – Universitätsmedizin Berlin, Berlin, Germany
- Charité – Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Department of Radiation Oncology, Berlin, Germany
- Charité – Universitätsmedizin Berlin, Berlin, Germany; German Cancer Consortium (DKTK), partner site Berlin, and German Cancer Research Center (DKFZ), Heidelberg, Germany
| | - Josy Wolfgang
- Charité – Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Department of Radiation Oncology, Berlin, Germany
| | - Luisa Allwohn
- Charité – Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Department of Radiation Oncology, Berlin, Germany
| | - Julia Onken
- Charité – Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Department of Neurosurgery, Berlin, Germany
| | - David Wasilewski
- Charité – Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Department of Neurosurgery, Berlin, Germany
| | - Siyer Roohani
- Charité – Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Department of Radiation Oncology, Berlin, Germany
- Charité – Universitätsmedizin Berlin, Berlin, Germany; German Cancer Consortium (DKTK), partner site Berlin, and German Cancer Research Center (DKFZ), Heidelberg, Germany
| | - Joachim Oertel
- Department of Neurosurgery, Saarland University Hospital, Saarland University, Homburg, Germany
| | - Daniel Zips
- Charité – Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Department of Radiation Oncology, Berlin, Germany
- Charité – Universitätsmedizin Berlin, Berlin, Germany; German Cancer Consortium (DKTK), partner site Berlin, and German Cancer Research Center (DKFZ), Heidelberg, Germany
| | - David Kaul
- Charité – Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Department of Radiation Oncology, Berlin, Germany
- Charité – Universitätsmedizin Berlin, Berlin, Germany; German Cancer Consortium (DKTK), partner site Berlin, and German Cancer Research Center (DKFZ), Heidelberg, Germany
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22
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Nieder C, Willmann J, Andratschke NH. Prospective randomized clinical studies involving reirradiation: update of a systematic review. Strahlenther Onkol 2023; 199:787-797. [PMID: 37500926 PMCID: PMC10449695 DOI: 10.1007/s00066-023-02118-1] [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] [Received: 04/13/2023] [Accepted: 07/04/2023] [Indexed: 07/29/2023]
Abstract
BACKGROUND Reirradiation is a potentially useful option for many patients with recurrent cancer, aiming at cure or symptom palliation, depending on disease/recurrence type and stage. The purpose of this follow-up study to a previous review from 2016 was to summarize all recently published randomized trials. Points of interest again included identifcation of methodological strengths and weaknesses, practice-changing results, and open questions. MATERIAL AND METHODS Systematic review of trials published between 2015 and February 2023. RESULTS We reviewed 7 additional trials, most of which addressed reirradiation of head and neck or brain tumours. The median number of patients was 60. Mirroring the previous review, trial design, primary endpoints and statistical hypotheses varied widely. The updated results only impact on decision making for reirradiation of nasopharynx cancer and glioma. Patients with one of these diseases, as well as other head and neck cancers, may benefit from reirradiation-induced local control, e.g. in terms of progression-free survival. For the first time, hyperfractionated radiotherapy emerged as preferred option for recurrent, inoperable nasopharynx cancer. Despite better therapeutic ratio with hyperfractionation, serious toxicity remains a concern after high cumulative total doses. Randomized trials are still lacking for prostate cancer and other sites. CONCLUSION Multicentric randomized trials on reirradiation are feasible and continue to refine the current standard of care for recurrent disease after previous radiotherapy. Ongoing prospective studies such as the European Society for Radiotherapy and Oncology and European Organisation for Research and Treatment of Cancer (ESTRO-EORTC) observational cohort ReCare (NCT: NCT03818503) will further shape the clinical practice of reirradiation.
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Affiliation(s)
- Carsten Nieder
- Department of Oncology and Palliative Medicine, Nordland Hospital Trust, 8092, Bodø, Norway.
- Department of Clinical Medicine, Faculty of Health Sciences, UiT-The Arctic University of Norway, 9038, Tromsø, Norway.
| | - Jonas Willmann
- Department of Radiation Oncology, University Hospital Zürich, 8091, Zurich, Switzerland
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23
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Mahé M, Beddok A, Goudjil F, Ala Eddine C, Bolle S, Champion L, Feuvret L, Herman P, Zefkili S, Choussy O, Le Tourneau C, Dendale R, Buvat I, Sauvaget E, Créhange G, Calugaru V. Curative high-dose reirradiation for patients with recurrent head and neck adenoid cystic carcinomas: outcomes and analysis of patterns of failure. Int J Radiat Biol 2023; 100:79-86. [PMID: 37526368 DOI: 10.1080/09553002.2023.2242934] [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: 02/27/2023] [Revised: 07/19/2023] [Accepted: 07/25/2023] [Indexed: 08/02/2023]
Abstract
BACKGROUND To investigate the outcomes of patients who underwent curative reirradiation (reRT), with intensity-modulated radiation therapy (IMRT) or proton therapy (PT) for unresectable recurrent or second primary head and neck adenoid cystic carcinoma (HNACC). METHODS Ten patients, mostly KPS 90%, were reirradiated (3/10 with IMRT and 7/10 with PT) at a median maximum dose to the CTV of 64.2 Gy from July 2011 to November 2021. Locations at the time of reRT were mainly the sinus (4/10) and the salivary glands (including the parotid and submandibular gland, 3/10). CTCAEv5 was used to assess acute and late toxicities. Follow-up was the time between the end of reRT and the date of last news. RESULTS The median time between the two irradiations was 53.5 months (IQR: 18-84). After a median follow-up of 26 months (range, 12.5-51.8 months), six patients had developed a locoregional recurrence (LR), of which four occurred within the previously irradiated volume. Two and three-year locoregional failure-free survival (LFFS) and overall survival (OS) were 55.6% [95%CI: 31-99.7%], and 41% [18.5-94%] and 66.7% [42-100%] and 44.4% [21.4-92.3%], respectively. LFFS and OS were significantly better in the subgroup of sinus tumors (p = .013) and the subgroup of patients re-irradiated more than two years after the first course of irradiation (p = .01). Seven patients had impairments before the start of reRT, including hearing impairment (3/10) and facial nerve impairment (3/10). The most severe late toxicities were brain necrosis (2/10), osteoradionecrosis (1/10) and vision decreased (1/10). CONCLUSION Curative reRT for HNACC is possible for selected cases, but the LR rate in the irradiated field and the risk of severe toxicity remain high. Improved selection criteria and more carefully defined target volumes may improve outcome in these patients. A further study including larger cohort of patients would be useful to confirm these results.
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Affiliation(s)
- Mathilde Mahé
- Radiation Oncology Department. Paris/Saint-Cloud/Orsay, Institut Curie. PSL Research University, Paris, France
| | - Arnaud Beddok
- Radiation Oncology Department. Paris/Saint-Cloud/Orsay, Institut Curie. PSL Research University, Paris, France
- Institut Curie. PSL Research University. University Paris Saclay. Inserm LITO U1288 Orsay, Paris, France
| | - Farid Goudjil
- Radiation Oncology Department. Paris/Saint-Cloud/Orsay, Institut Curie. PSL Research University, Paris, France
| | | | - Stéphanie Bolle
- Department of Radiation Oncology, Gustave Roussy Campus, Villejuif, France
| | | | - Loïc Feuvret
- Department of Radiation Therapy, East Group Hospital. Hospices Civils de Lyon, Lyon, France
| | - Philippe Herman
- Department of Head and Neck Surgery, Lariboisière Hospital. APHP. Nord. Université Paris Cité, Paris, France
| | - Sofia Zefkili
- Radiation Oncology Department. Paris/Saint-Cloud/Orsay, Institut Curie. PSL Research University, Paris, France
| | - Olivier Choussy
- Department of Head and Neck Surgery. Institut Curie, Paris/Saint-Cloud, France
| | - Christophe Le Tourneau
- Department of Drug Development and Innovation (D3i), INSERM U900 Research unit. Paris-Saclay University. Institut Curie, Paris, France
| | - Remi Dendale
- Radiation Oncology Department. Paris/Saint-Cloud/Orsay, Institut Curie. PSL Research University, Paris, France
| | - Irene Buvat
- Institut Curie. PSL Research University. University Paris Saclay. Inserm LITO U1288 Orsay, Paris, France
| | - Elisabeth Sauvaget
- Department of Head and Neck Surgery, Saint-Joseph Hospital, Paris, France
| | - Gilles Créhange
- Radiation Oncology Department. Paris/Saint-Cloud/Orsay, Institut Curie. PSL Research University, Paris, France
| | - Valentin Calugaru
- Radiation Oncology Department. Paris/Saint-Cloud/Orsay, Institut Curie. PSL Research University, Paris, France
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Thompson C, Pagett C, Lilley J, Svensson S, Eriksson K, Bokrantz R, Ödén J, Nix M, Murray L, Appelt A. Brain Re-Irradiation Robustly Accounting for Previously Delivered Dose. Cancers (Basel) 2023; 15:3831. [PMID: 37568647 PMCID: PMC10417278 DOI: 10.3390/cancers15153831] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2023] [Revised: 07/20/2023] [Accepted: 07/24/2023] [Indexed: 08/13/2023] Open
Abstract
(1) Background: The STRIDeR (Support Tool for Re-Irradiation Decisions guided by Radiobiology) planning pathway aims to facilitate anatomically appropriate and radiobiologically meaningful re-irradiation (reRT). This work evaluated the STRIDeR pathway for robustness compared to a more conservative manual pathway. (2) Methods: For ten high-grade glioma reRT patient cases, uncertainties were applied and cumulative doses re-summed. Geometric uncertainties of 3, 6 and 9 mm were applied to the background dose, and LQ model robustness was tested using α/β variations (values 1, 2 and 5 Gy) and the linear quadratic linear (LQL) model δ variations (values 0.1 and 0.2). STRIDeR robust optimised plans, incorporating the geometric and α/β uncertainties during optimisation, were also generated. (3) Results: The STRIDeR and manual pathways both achieved clinically acceptable plans in 8/10 cases but with statistically significant improvements in the PTV D98% (p < 0.01) for STRIDeR. Geometric and LQ robustness tests showed comparable robustness within both pathways. STRIDeR plans generated to incorporate uncertainties during optimisation resulted in a superior plan robustness with a minimal impact on PTV dose benefits. (4) Conclusions: Our results indicate that STRIDeR pathway plans achieved a similar robustness to manual pathways with improved PTV doses. Geometric and LQ model uncertainties can be incorporated into the STRIDeR pathway to facilitate robust optimisation.
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Affiliation(s)
- Christopher Thompson
- Leeds Cancer Centre, Department of Medical Physics, Leeds Teaching Hospitals NHS Trust, Leeds LS9 7TF, UK; (C.T.)
| | - Christopher Pagett
- Leeds Cancer Centre, Department of Medical Physics, Leeds Teaching Hospitals NHS Trust, Leeds LS9 7TF, UK; (C.T.)
| | - John Lilley
- Leeds Cancer Centre, Department of Medical Physics, Leeds Teaching Hospitals NHS Trust, Leeds LS9 7TF, UK; (C.T.)
| | | | | | | | - Jakob Ödén
- RaySearch Laboratories, SE-104 30 Stockholm, Sweden
| | - Michael Nix
- Leeds Cancer Centre, Department of Medical Physics, Leeds Teaching Hospitals NHS Trust, Leeds LS9 7TF, UK; (C.T.)
| | - Louise Murray
- Leeds Cancer Centre, Department of Clinical Oncology, Leeds Teaching Hospitals NHS Trust, Leeds LS9 7TF, UK
- Leeds Institute of Medical Research at St James’s, University of Leeds, Leeds LS2 9JT, UK
| | - Ane Appelt
- Leeds Cancer Centre, Department of Medical Physics, Leeds Teaching Hospitals NHS Trust, Leeds LS9 7TF, UK; (C.T.)
- Leeds Institute of Medical Research at St James’s, University of Leeds, Leeds LS2 9JT, UK
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Zaghloul MS, Hunter A, Mostafa AG, Parkes J. Re-irradiation for recurrent/progressive pediatric brain tumors: from radiobiology to clinical outcomes. Expert Rev Anticancer Ther 2023; 23:709-717. [PMID: 37194207 DOI: 10.1080/14737140.2023.2215439] [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: 01/29/2023] [Accepted: 05/15/2023] [Indexed: 05/18/2023]
Abstract
INTRODUCTION Brain tumors are the most common solid tumors in children. Neurosurgical excision, radiotherapy, and/or chemotherapy represent the standard of care in most histopathological types of pediatric central nervous system (CNS) tumors. Even though the successful cure rate is reasonable, some patients may develop recurrence locally or within the neuroaxis. AREA COVERED The management of these recurrences is not easy; however, significant advances in neurosurgery, radiation techniques, radiobiology, and the introduction of newer biological therapies, have improved the results of their salvage treatment. In many cases, salvage re-irradiation is feasible and has achieved encouraging results. The results of re-irradiation depend upon several factors. These factors include tumor type, extent of the second surgery, tumor volume, location of the recurrence, time that elapses between the initial treatment, the combination with other treatment agents, relapse, and the initial response to radiotherapy. EXPERT OPINION Reviewing the radiobiological basis and clinical outcome of pediatric brain re-irradiation revealed that re-irradiation is safe, feasible, and indicated for recurrent/progressive different tumor types such as; ependymoma, medulloblastoma, diffuse intrinsic pontine glioma (DIPG) and glioblastoma. It is now considered part of the treatment armamentarium for these patients. The challenges and clinical results in treating recurrent pediatric brain tumors were highly documented.
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Affiliation(s)
- Mohamed S Zaghloul
- Radiation Oncology department. National Cancer Institute, Cairo University & Children's Cancer Hospital, Cairo, Egypt
| | - Alistair Hunter
- Division of Radiobiology, Radiation Medicine, Groote Schuur Hospital, University of Cape Town, Cape Town, South Africa
| | - Ayatullah G Mostafa
- Department of Radiology, Faculty of Medicine, Egypt and Department of Diagnostic Imaging, Cairo University, St. Jude Children's Research Hospital, Memphis, TN, USA
| | - Jeannette Parkes
- Radiation Oncology Department, Groote Schuur Hospital, University of Cape Town, Cape Town, South Africa
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Christ SM, Willmann J, Heesen P, Kühnis A, Tanadini-Lang S, Looman EL, Ahmadsei M, Blum D, Guckenberger M, Balermpas P, Hertler C, Andratschke N. Mortality during or shortly after Curative-Intent Radio-(Chemo-)Therapy over the last decade at a large comprehensive cancer center. Clin Transl Radiat Oncol 2023; 41:100645. [PMID: 37304171 PMCID: PMC10248528 DOI: 10.1016/j.ctro.2023.100645] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2023] [Revised: 05/26/2023] [Accepted: 05/29/2023] [Indexed: 06/13/2023] Open
Abstract
Background and Introduction Definitive surgical, oncological and radio-oncological treatment may result in significant morbidity and acute mortality. Mortality during or shortly after treatment in patients undergoing curative radio-(chemo)-therapy has not been studied systematically. We reviewed all curative radio-(chemo-)therapies at a large comprehensive cancer center over the last decade. Materials and Methods The institutional record was screened for patients who received curative-intent radio-(chemo-)therapy and deceased during or within 30 days after radiotherapy. Curative therapy was defined as prescribed dosage of EQD2 ≥ 50 Gy for radiotherapy alone and EQD2 ≥ 40 Gy for radiochemotherapies. Data on demographics, disease and treatment were assembled and assessed. Results Of 15,255 radiotherapy courses delivered at our center, 8,515 (56%) were performed with curative-intent. During or within 30 days after radio-(chemo-)therapy, 78 patients died (0.9% of all curative-intent courses). Median age of the deceased patients was 70 (IQR, 62-78) years, and 36% (28/78) were female. Median pre-therapeutic ECOG-PS was 1 (IQR, 0-2) and Charlson-Comorbidity-Index was 3+ (IQR, 2-3+). The most common primary malignancies were head and neck cancer (33/78; 42%) and central nervous system tumors (13/78; 17%). Peritherapeutic mortality varied by primary tumor, with the highest prevalence observed in head and neck and gastrointestinal cancer patients with 2.9% (33/1,144) and 2.4% (8/332), respectively. Among patients with known cause of death (34/78; 44%), tumor progression (12/34; 35%) and pulmonary complications/causes (11/34; 35%) were most common. On multivariable regression analysis, a worse ECOG-PS was associated with a relatively earlier peri-radiotherapeutic death (p = 0.014). Conclusion Mortality during or within 30 days of curative-intent radio-(chemo-)therapy was low, yet highest for head and neck (2.9%) and gastrointestinal tumor (2.4%) patients. Reasons for these findings include rapid tumor progression in some cancers, good patient selection, with ECOG-PS being most useful and predictive for avoiding early mortality. Future research should help refine predictors for peri-RT mortality.
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Affiliation(s)
- Sebastian M. Christ
- Department of Radiation Oncology, University Hospital Zurich and University of Zurich, Zurich, Switzerland
| | - Jonas Willmann
- Department of Radiation Oncology, University Hospital Zurich and University of Zurich, Zurich, Switzerland
- Center for Proton Therapy, Paul Scherrer Institute, ETH Domain, Villigen, Switzerland
| | - Philip Heesen
- Faculty of Medicine, University of Zurich, Zurich, Switzerland
| | - Anja Kühnis
- Department of Radiation Oncology, University Hospital Zurich and University of Zurich, Zurich, Switzerland
| | - Stephanie Tanadini-Lang
- Department of Radiation Oncology, University Hospital Zurich and University of Zurich, Zurich, Switzerland
| | - Esmeé L. Looman
- Department of Radiation Oncology, University Hospital Zurich and University of Zurich, Zurich, Switzerland
| | - Maiwand Ahmadsei
- Department of Radiation Oncology, University Hospital Zurich and University of Zurich, Zurich, Switzerland
| | - David Blum
- Competence Center for Palliative Care, University Hospital Zurich, Zurich, Switzerland
| | - Matthias Guckenberger
- Department of Radiation Oncology, University Hospital Zurich and University of Zurich, Zurich, Switzerland
| | - Panagiotis Balermpas
- Department of Radiation Oncology, University Hospital Zurich and University of Zurich, Zurich, Switzerland
| | - Caroline Hertler
- Competence Center for Palliative Care, University Hospital Zurich, Zurich, Switzerland
| | - Nicolaus Andratschke
- Department of Radiation Oncology, University Hospital Zurich and University of Zurich, Zurich, Switzerland
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Regnery S, Leiner L, Buchele C, Hoegen P, Sandrini E, Held T, Deng M, Eichkorn T, Rippke C, Renkamp CK, König L, Lang K, Adeberg S, Debus J, Klüter S, Hörner-Rieber J. Comparison of different dose accumulation strategies to estimate organ doses after stereotactic magnetic resonance-guided adaptive radiotherapy. Radiat Oncol 2023; 18:92. [PMID: 37248504 DOI: 10.1186/s13014-023-02284-7] [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: 01/23/2023] [Accepted: 05/17/2023] [Indexed: 05/31/2023] Open
Abstract
INTRODUCTION Re-irradiation is frequently performed in the era of precision oncology, but previous doses to organs-at-risk (OAR) must be assessed to avoid cumulative overdoses. Stereotactic magnetic resonance-guided online adaptive radiotherapy (SMART) enables highly precise ablation of tumors close to OAR. However, OAR doses may change considerably during adaptive treatment, which complicates potential re-irradiation. We aimed to compare the baseline plan with different dose accumulation techniques to inform re-irradiation. PATIENTS & METHODS We analyzed 18 patients who received SMART to lung or liver tumors inside prospective databases. Cumulative doses were calculated inside the planning target volumes (PTV) and OAR for the adapted plans and theoretical non-adapted plans via (1) cumulative dose volume histograms (DVH sum plan) and (2) deformable image registration (DIR)-based dose accumulation to planning images (DIR sum plan). We compared cumulative dose parameters between the baseline plan, DVH sum plan and DIR sum plan using equivalent doses in 2 Gy fractions (EQD2). RESULTS Individual patients presented relevant increases of near-maximum doses inside the proximal bronchial tree, spinal cord, heart and gastrointestinal OAR when comparing adaptive treatment to the baseline plans. The spinal cord near-maximum doses were significantly increased in the liver patients (D2% median: baseline 6.1 Gy, DIR sum 8.1 Gy, DVH sum 8.4 Gy, p = 0.04; D0.1 cm³ median: baseline 6.1 Gy, DIR sum 8.1 Gy, DVH sum 8.5 Gy, p = 0.04). Three OAR overdoses occurred during adaptive treatment (DIR sum: 1, DVH sum: 2), and four more intense OAR overdoses would have occurred during non-adaptive treatment (DIR sum: 4, DVH sum: 3). Adaptive treatment maintained similar PTV coverages to the baseline plans, while non-adaptive treatment yielded significantly worse PTV coverages in the lung (D95% median: baseline 86.4 Gy, DIR sum 82.4 Gy, DVH sum 82.2 Gy, p = 0.006) and liver patients (D95% median: baseline 87.4 Gy, DIR sum 82.1 Gy, DVH sum 81.1 Gy, p = 0.04). CONCLUSION OAR doses can increase during SMART, so that re-irradiation should be planned based on dose accumulations of the adapted plans instead of the baseline plan. Cumulative dose volume histograms represent a simple and conservative dose accumulation strategy.
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Affiliation(s)
- Sebastian Regnery
- Department of Radiation Oncology, Heidelberg University Hospital, Im Neuenheimer Feld 400, 69120, Heidelberg, Germany
- National Center for Radiation Oncology (NCRO), Heidelberg Institute for Radiation Oncology (HIRO), Im Neuenheimer Feld 400, 69120, Heidelberg, Germany
- National Center for Tumor diseases (NCT), Heidelberg, Germany
| | - Lukas Leiner
- Department of Radiation Oncology, Heidelberg University Hospital, Im Neuenheimer Feld 400, 69120, Heidelberg, Germany
| | - Carolin Buchele
- Department of Radiation Oncology, Heidelberg University Hospital, Im Neuenheimer Feld 400, 69120, Heidelberg, Germany
- National Center for Radiation Oncology (NCRO), Heidelberg Institute for Radiation Oncology (HIRO), Im Neuenheimer Feld 400, 69120, Heidelberg, Germany
| | - Philipp Hoegen
- Department of Radiation Oncology, Heidelberg University Hospital, Im Neuenheimer Feld 400, 69120, Heidelberg, Germany
- National Center for Radiation Oncology (NCRO), Heidelberg Institute for Radiation Oncology (HIRO), Im Neuenheimer Feld 400, 69120, Heidelberg, Germany
- National Center for Tumor diseases (NCT), Heidelberg, Germany
- Clinical Cooperation Unit Radiation Oncology, German Cancer Research Center (DKFZ), Heidelberg, Germany
| | - Elisabetta Sandrini
- Department of Radiation Oncology, Heidelberg University Hospital, Im Neuenheimer Feld 400, 69120, Heidelberg, Germany
- National Center for Radiation Oncology (NCRO), Heidelberg Institute for Radiation Oncology (HIRO), Im Neuenheimer Feld 400, 69120, Heidelberg, Germany
- National Center for Tumor diseases (NCT), Heidelberg, Germany
| | - Thomas Held
- Department of Radiation Oncology, Heidelberg University Hospital, Im Neuenheimer Feld 400, 69120, Heidelberg, Germany
- National Center for Radiation Oncology (NCRO), Heidelberg Institute for Radiation Oncology (HIRO), Im Neuenheimer Feld 400, 69120, Heidelberg, Germany
- National Center for Tumor diseases (NCT), Heidelberg, Germany
| | - Maximilian Deng
- Department of Radiation Oncology, Heidelberg University Hospital, Im Neuenheimer Feld 400, 69120, Heidelberg, Germany
- National Center for Radiation Oncology (NCRO), Heidelberg Institute for Radiation Oncology (HIRO), Im Neuenheimer Feld 400, 69120, Heidelberg, Germany
- National Center for Tumor diseases (NCT), Heidelberg, Germany
| | - Tanja Eichkorn
- Department of Radiation Oncology, Heidelberg University Hospital, Im Neuenheimer Feld 400, 69120, Heidelberg, Germany
- National Center for Radiation Oncology (NCRO), Heidelberg Institute for Radiation Oncology (HIRO), Im Neuenheimer Feld 400, 69120, Heidelberg, Germany
- National Center for Tumor diseases (NCT), Heidelberg, Germany
| | - Carolin Rippke
- Department of Radiation Oncology, Heidelberg University Hospital, Im Neuenheimer Feld 400, 69120, Heidelberg, Germany
- National Center for Radiation Oncology (NCRO), Heidelberg Institute for Radiation Oncology (HIRO), Im Neuenheimer Feld 400, 69120, Heidelberg, Germany
| | - C Katharina Renkamp
- Department of Radiation Oncology, Heidelberg University Hospital, Im Neuenheimer Feld 400, 69120, Heidelberg, Germany
- National Center for Radiation Oncology (NCRO), Heidelberg Institute for Radiation Oncology (HIRO), Im Neuenheimer Feld 400, 69120, Heidelberg, Germany
| | - Laila König
- Department of Radiation Oncology, Heidelberg University Hospital, Im Neuenheimer Feld 400, 69120, Heidelberg, Germany
- National Center for Radiation Oncology (NCRO), Heidelberg Institute for Radiation Oncology (HIRO), Im Neuenheimer Feld 400, 69120, Heidelberg, Germany
- National Center for Tumor diseases (NCT), Heidelberg, Germany
| | - Kristin Lang
- Department of Radiation Oncology, Heidelberg University Hospital, Im Neuenheimer Feld 400, 69120, Heidelberg, Germany
- National Center for Radiation Oncology (NCRO), Heidelberg Institute for Radiation Oncology (HIRO), Im Neuenheimer Feld 400, 69120, Heidelberg, Germany
- National Center for Tumor diseases (NCT), Heidelberg, Germany
| | - Sebastian Adeberg
- Department of Radiation Oncology, Heidelberg University Hospital, Im Neuenheimer Feld 400, 69120, Heidelberg, Germany
- National Center for Radiation Oncology (NCRO), Heidelberg Institute for Radiation Oncology (HIRO), Im Neuenheimer Feld 400, 69120, Heidelberg, Germany
- National Center for Tumor diseases (NCT), Heidelberg, Germany
| | - Jürgen Debus
- Department of Radiation Oncology, Heidelberg University Hospital, Im Neuenheimer Feld 400, 69120, Heidelberg, Germany
- National Center for Radiation Oncology (NCRO), Heidelberg Institute for Radiation Oncology (HIRO), Im Neuenheimer Feld 400, 69120, Heidelberg, Germany
- National Center for Tumor diseases (NCT), Heidelberg, Germany
- Clinical Cooperation Unit Radiation Oncology, German Cancer Research Center (DKFZ), Heidelberg, Germany
| | - Sebastian Klüter
- Department of Radiation Oncology, Heidelberg University Hospital, Im Neuenheimer Feld 400, 69120, Heidelberg, Germany
- National Center for Radiation Oncology (NCRO), Heidelberg Institute for Radiation Oncology (HIRO), Im Neuenheimer Feld 400, 69120, Heidelberg, Germany
| | - Juliane Hörner-Rieber
- Department of Radiation Oncology, Heidelberg University Hospital, Im Neuenheimer Feld 400, 69120, Heidelberg, Germany.
- National Center for Radiation Oncology (NCRO), Heidelberg Institute for Radiation Oncology (HIRO), Im Neuenheimer Feld 400, 69120, Heidelberg, Germany.
- National Center for Tumor diseases (NCT), Heidelberg, Germany.
- Clinical Cooperation Unit Radiation Oncology, German Cancer Research Center (DKFZ), Heidelberg, Germany.
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Vasquez Osorio E, Mayo C, Jackson A, Appelt A. Challenges of re-irradiation: A call to arms for physicists - and radiotherapy vendors. Radiother Oncol 2023; 182:109585. [PMID: 36842664 DOI: 10.1016/j.radonc.2023.109585] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2023] [Revised: 02/16/2023] [Accepted: 02/17/2023] [Indexed: 02/28/2023]
Affiliation(s)
| | - Charles Mayo
- University of Michigan, Ann Arbor, MI 48109-5010, USA
| | - Andrew Jackson
- Memorial Sloan Kettering Cancer Center, New York, NY 10065, USA
| | - Ane Appelt
- University of Leeds, LS2 9JT Leeds, United Kingdom
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29
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Murray LJ, Appelt AL, Ajithkumar T, Bedford JL, Burnet NG, Lalondrelle S, Manolopoulos S, O'Cathail SM, Robinson M, Short SC, Slevin F, Thomson DJ. Re-irradiation: From Cell Lines to Patients, Filling the (Science) Gap in the Market. Clin Oncol (R Coll Radiol) 2023; 35:318-322. [PMID: 36842937 DOI: 10.1016/j.clon.2023.01.023] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2022] [Revised: 01/30/2023] [Accepted: 01/31/2023] [Indexed: 02/10/2023]
Affiliation(s)
- L J Murray
- Leeds Institute of Medical Research at St James's, University of Leeds, Leeds, UK; Leeds Cancer Centre, Leeds Teaching Hospitals NHS Trust, Leeds, UK.
| | - A L Appelt
- Leeds Institute of Medical Research at St James's, University of Leeds, Leeds, UK; Leeds Cancer Centre, Leeds Teaching Hospitals NHS Trust, Leeds, UK
| | - T Ajithkumar
- Department of Oncology, Cambridge University Hospitals NHS Foundation Trust, Cambridge, UK
| | - J L Bedford
- Joint Department of Physics, The Institute of Cancer Research and The Royal Marsden NHS Foundation Trust, London, UK
| | - N G Burnet
- The Christie NHS Foundation Trust, Manchester, UK
| | - S Lalondrelle
- The Institute of Cancer Research, London, UK; The Royal Marsden Hospital, Sutton, UK
| | - S Manolopoulos
- Northern Centre for Cancer Care, Newcastle Upon Tyne Hospitals NHS Foundation Trust, Cumberland Infirmary, Carlisle, UK
| | - S M O'Cathail
- Institute of Cancer Sciences, University of Glasgow, Glasgow, UK; Beatson West of Scotland Cancer Centre, Glasgow, UK
| | - M Robinson
- Oxford Institute for Radiation Oncology, Department of Oncology, University of Oxford, Old Road Campus Research Building, Oxford, UK; Oxford University Hospitals NHS Foundation Trust, Churchill Hospital, Oxford, UK
| | - S C Short
- Leeds Institute of Medical Research at St James's, University of Leeds, Leeds, UK; Leeds Cancer Centre, Leeds Teaching Hospitals NHS Trust, Leeds, UK
| | - F Slevin
- Leeds Institute of Medical Research at St James's, University of Leeds, Leeds, UK; Leeds Cancer Centre, Leeds Teaching Hospitals NHS Trust, Leeds, UK
| | - D J Thomson
- The Christie NHS Foundation Trust, Manchester, UK; The University of Liverpool, Liverpool, UK
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Murray L, Thompson C, Pagett C, Lilley J, Al-Qaisieh B, Svensson S, Eriksson K, Nix M, Aldred M, Aspin L, Gregory S, Appelt A. Treatment plan optimisation for reirradiation. Radiother Oncol 2023; 182:109545. [PMID: 36813170 DOI: 10.1016/j.radonc.2023.109545] [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] [Received: 08/12/2022] [Revised: 01/20/2023] [Accepted: 02/03/2023] [Indexed: 02/22/2023]
Abstract
BACKGROUND The STRIDeR (Support Tool for Re-Irradiation Decisions guided by Radiobiology) project aims to create a clinically viable re-irradiation planning pathway within a commercial treatment planning system (TPS). Such a pathway should account for previously delivered dose, voxel-by-voxel, taking fractionation effects, tissue recovery and anatomical changes into account. This work presents the workflow and technical solutions in the STRIDeR pathway. METHODS The pathway was implemented in RayStation (version 9B DTK) to allow an original dose distribution to be used as background dose to guide optimisation of re-irradiation plans. Organ at risk (OAR) planning objectives in equivalent dose in 2 Gy fractions (EQD2) were applied cumulatively across the original and re-irradiation treatments, with optimisation of the re-irradiation plan performed voxel-by-voxel in EQD2. Different approaches to image registration were employed to account for anatomical change. Data from 21 patients who received pelvic Stereotactic Ablative Radiotherapy (SABR) re-irradiation were used to illustrate the use of the STRIDeR workflow. STRIDeR plans were compared to those produced using a standard manual method. RESULTS The STRIDeR pathway resulted in clinically acceptable plans in 20/21 cases. Compared to plans produced using the laborious manual method, less constraint relaxation was required or higher re-irradiation doses could be prescribed in 3/21. CONCLUSION The STRIDeR pathway used background dose to guide radiobiologically meaningful, anatomically-appropriate re-irradiation treatment planning within a commercial TPS. This provides a standardised and transparent approach, offering more informed re-irradiation and improved cumulative OAR dose evaluation.
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Affiliation(s)
- Louise Murray
- Leeds Institute of Medical Research at St James's, University of Leeds, Leeds, UK; Department of Clinical Oncology, Leeds Cancer Centre, Leeds Teaching Hospitals NHS Trust, Leeds, UK.
| | - Christopher Thompson
- Department of Medical Physics, Leeds Cancer Centre, Leeds Teaching Hospitals NHS Trust, Leeds, UK
| | - Christopher Pagett
- Department of Medical Physics, Leeds Cancer Centre, Leeds Teaching Hospitals NHS Trust, Leeds, UK
| | - John Lilley
- Department of Medical Physics, Leeds Cancer Centre, Leeds Teaching Hospitals NHS Trust, Leeds, UK
| | - Bashar Al-Qaisieh
- Department of Medical Physics, Leeds Cancer Centre, Leeds Teaching Hospitals NHS Trust, Leeds, UK
| | | | | | - Michael Nix
- Department of Medical Physics, Leeds Cancer Centre, Leeds Teaching Hospitals NHS Trust, Leeds, UK
| | - Michael Aldred
- Department of Medical Physics, Leeds Cancer Centre, Leeds Teaching Hospitals NHS Trust, Leeds, UK
| | - Lynn Aspin
- Department of Medical Physics, Leeds Cancer Centre, Leeds Teaching Hospitals NHS Trust, Leeds, UK
| | - Stephen Gregory
- Department of Medical Physics, Leeds Cancer Centre, Leeds Teaching Hospitals NHS Trust, Leeds, UK
| | - Ane Appelt
- Leeds Institute of Medical Research at St James's, University of Leeds, Leeds, UK; Department of Medical Physics, Leeds Cancer Centre, Leeds Teaching Hospitals NHS Trust, Leeds, UK
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31
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Ayadi M, Dupuis P, Baudier T, Padovani L, Sarrut D, Sunyach MP. Management of reirradiations: A clinical and technical overview based on a French survey. Phys Med 2023; 109:102582. [PMID: 37080157 DOI: 10.1016/j.ejmp.2023.102582] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/03/2022] [Revised: 03/22/2023] [Accepted: 04/06/2023] [Indexed: 04/22/2023] Open
Abstract
INTRODUCTION The reirradiation number increased due to systemic therapies and patient survival. Few guidelines regarding acceptable cumulative doses to organs at risk (OARs) and appropriate dose accumulation tools need, made reirradiation challenging. The survey objective was to present the French current technical and clinical practices in reirradiations. METHODS A group of physician and physicists developed a survey gathering major issues of the topic. The questionnaire consisted in 4 parts: data collection, demographic, clinical and technical aspects. It was delivered through the SFRO and the SFPM. Data collection lasted 2 months and were gathered to compute statistical analysis. RESULTS 48 institutions answered the survey. Difficulties about patient data collection were related to patient safety, administrative and technical limitations. Half of the institutions discussed reirradiation cases during a multidisciplinary meeting. It mainly aimed at discussing the indication and the new treatment total dose (92%). 79% of the respondents used various references but only 6% of them were specific to reirradiations. Patients with pain and clinical deficit were ranked as best inclusion criteria. 54.2% of the institutions considered OARs recovery, especially for spinal cord and brainstem. A commercial software was used for dose accumulation for 52% of respondents. Almost all institutions performed equivalent dose conversion (94%). A quarter of the institutions estimated not to have the appropriate equipment for reirradiation. CONCLUSION This survey showed the various approaches and tools used in reirradiation management. It highlighted issues in collecting data, and the guidelines necessity for safe practices, to increase clinicians confidence in retreating patients.
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Affiliation(s)
- Myriam Ayadi
- Radiation Therapy Department, Léon Bérard Centre, Lyon, France.
| | - Pauline Dupuis
- Radiation Therapy Department, Léon Bérard Centre, Lyon, France
| | - Thomas Baudier
- Univ Lyon, INSA-Lyon, Université Lyon 1, CNRS, Inserm, Centre Léon Bérard, CREATIS UMR 5220, U1206, F-69373 Lyon, France
| | - Laeticia Padovani
- Radiotherapy Department, Assistance Publique des Hôpitaux de Marseille, Marseille, France
| | - David Sarrut
- Univ Lyon, INSA-Lyon, Université Lyon 1, CNRS, Inserm, Centre Léon Bérard, CREATIS UMR 5220, U1206, F-69373 Lyon, France
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Re-Irradiation by Stereotactic Radiotherapy of Brain Metastases in the Case of Local Recurrence. Cancers (Basel) 2023; 15:cancers15030996. [PMID: 36765953 PMCID: PMC9913463 DOI: 10.3390/cancers15030996] [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: 01/11/2023] [Revised: 02/01/2023] [Accepted: 02/02/2023] [Indexed: 02/09/2023] Open
Abstract
PURPOSE To evaluate the efficacy and safety of a second course of stereotactic radiotherapy (SRT2) treatment for a local recurrence of brain metastases previously treated with SRT (SRT1), using the Hypofractionated Treatment Effects in the Clinic (HyTEC) reporting standards and the European Society for Radiotherapy and Oncology guidelines. METHODS From December 2014 to May 2021, 32 patients with 34 brain metastases received salvage SRT2 after failed SRT1. A total dose of 21 to 27 Gy in 3 fractions or 30 Gy in 5 fractions was prescribed to the periphery of the PTV (99% of the prescribed dose covering 99% of the PTV). After SRT2, multiparametric MRI, sometimes combined with 18F-DOPA PET-CT, was performed every 3 months to determine local control (LC) and radionecrosis (RN). RESULTS After a median follow-up of 12 months (range: 1-37 months), the crude LC and RN rates were 68% and 12%, respectively, and the median overall survival was 25 months. In a multivariate analysis, the performance of surgery was predictive of a significantly better LC (p = 0.002) and survival benefit (p = 0.04). The volume of a normal brain receiving 5 Gy during SRT2 (p = 0.04), a dose delivered to the PTV in SRT1 (p = 0.003), and concomitant systemic therapy (p = 0.04) were associated with an increased risk of RN. CONCLUSION SRT2 is an effective approach for the local recurrence of BM after initial SRT treatment and is a potential salvage therapy option for well-selected people with a good performance status. Surgery was associated with a higher LC.
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