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Incidence and Risk Factors of Chest Wall Metastasis at Biopsy Sites in Patients with Malignant Pleural Mesothelioma. Cancers (Basel) 2022; 14:cancers14184356. [PMID: 36139517 PMCID: PMC9497080 DOI: 10.3390/cancers14184356] [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: 07/11/2022] [Revised: 09/04/2022] [Accepted: 09/04/2022] [Indexed: 11/16/2022] Open
Abstract
To investigate the incidence and risk factors of chest wall metastasis (CWM) at biopsy sites in patients with malignant pleural mesothelioma (MPM). This retrospective cohort study was conducted in 262 consecutive MPM patients who underwent multimodal treatment in which including neoadjuvant chemotherapy (NAC) and curative-intent surgery, from August 2009 to March 2021. CWM was evaluated radiologically (r-CWM) and pathologically (p-CWM). We also investigated the risk factors of p-CWM and the consistency between r-CWM and p-CWM. Of 262 patients, 25 patients were excluded from analysis due to missing data or impossibility of evaluation. Of the eligible 237 patients, pleural biopsy was performed via video-assisted thoracoscopic surgery in 197 (83.1%) and medical thoracoscopy in 40 (16.9%). Pleurodesis was performed after pleural biopsy in 74 patients (31.2%). All patients received NAC followed by curative-intent surgery. Radiological examination showed r-CWM in 43 patients (18.1%), while pathological examination showed p-CWM in 135 patients (57.0%). The incidence of p-CWM was significantly higher in the patients who received pleurodesis after pleural biopsy (77.0% vs. 47.9%, <0.001). Multivariate logistic regression analysis for p-CWM revealed that pleurodesis is an independent risk factor of p-CWM (adjusted hazard ratio, 3.46; 95% confidence interval, 1.84−6.52, <0.001). CWM at the biopsy site was pathologically proven in more than half of the patients (57.0%) who received NAC followed by curative-intent surgery, which was higher than the numbers diagnosed by radiological examinations (p-CWM: 57.0% vs. r-CWM: 18.1%). Pleurodesis after pleural biopsy is an independent risk factor of p-CWM.
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Isaacs T, Murdoch J, Demjén Z, Stevenson F. Examining the language demands of informed consent documents in patient recruitment to cancer trials using tools from corpus and computational linguistics. Health (London) 2022; 26:431-456. [PMID: 33045861 PMCID: PMC9163777 DOI: 10.1177/1363459320963431] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
Obtaining informed consent (IC) is an ethical imperative, signifying participants' understanding of the conditions and implications of research participation. One setting where the stakes for understanding are high is randomized controlled trials (RCTs), which test the effectiveness and safety of medical interventions. However, the use of legalese and medicalese in ethical forms coupled with the need to explain RCT-related concepts (e.g. randomization) can increase patients' cognitive load when reading text. There is a need to systematically examine the language demands of IC documents, including whether the processes intended to safeguard patients by providing clear information might do the opposite through complex, inaccessible language. Therefore, the goal of this study is to build an open-access corpus of patient information sheets (PIS) and consent forms (CF) and analyze each genre using an interdisciplinary approach to capture multidimensional measures of language quality beyond traditional readability measures. A search of publicly-available online IC documents for UK-based cancer RCTs (2000-17) yielded corpora of 27 PIS and 23 CF. Textual analysis using the computational tool, Coh-Metrix, revealed different linguistic dimensions relating to the complexity of IC documents, particularly low word concreteness for PIS and low referential and deep cohesion for CF, although both had high narrativity. Key part-of-speech analyses using Wmatrix corpus software revealed a contrast between the overrepresentation of the pronoun 'you' plus modal verbs in PIS and 'I' in CF, exposing the contradiction inherent in conveying uncertainty to patients using tentative language in PIS while making them affirm certainty in their understanding in CF.
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Lee CC, Soon YY, Vellayappan B, Leong CN, Koh WY, Tey JCS. Prophylactic irradiation of tracts in patients with malignant pleural mesothelioma: A systematic review and meta-analysis of randomized trials. Crit Rev Oncol Hematol 2021; 160:103278. [PMID: 33675903 DOI: 10.1016/j.critrevonc.2021.103278] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2020] [Revised: 01/26/2021] [Accepted: 02/27/2021] [Indexed: 12/29/2022] Open
Abstract
INTRODUCTION The role of prophylactic irradiation of tracts (PIT) to prevent tumor seeding at the site of a diagnostic or therapeutic intervention in patients with malignant pleural mesothelioma (MPM) is controversial. This study aimed to determine the efficacy of PITs in preventing procedure tract metastases (PTM) after a chest wall procedure in MPM. MATERIALS AND METHODS We searched various databases from inception date to April 2020 for randomized controlled trials (RCTs) comparing PIT with no PIT in patients who had a chest wall procedure for MPM. We assessed the risk of bias of individual RCT using the RoB2 tool. The primary outcome was the occurrence of PTM. Meta-analysis was performed using random-effects model. We employed the GRADE approach to assess the certainty of the evidence. RESULTS We identified five RCTs including 737 patients. Two RCTs had a low risk of bias. PIT was associated with a significant reduction in the odds of PTM (odd ratio, 0.55; 95 % confidence interval, 0.32 to 0.95; P-value = 0.03; I2 = 13 %; GRADE: moderate certainty). One RCT reported no difference in overall survival outcome with the use of PIT. None of the RCTs performed subgroup analyses. Sensitivity analyses showed similar results when limited to RCTs with low risk of bias. CONCLUSION PIT significantly reduces the occurrence of PTM in patients with MPM who had a diagnostic or therapeutic chest wall procedure.
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Affiliation(s)
- Chia Ching Lee
- Department of Radiation Oncology, National University Cancer Institute, Singapore; National University Hospital, Singapore; National University Health System, Singapore; National University of Singapore, Singapore.
| | - Yu Yang Soon
- Department of Radiation Oncology, National University Cancer Institute, Singapore; National University Hospital, Singapore; National University Health System, Singapore; National University of Singapore, Singapore.
| | - Balamurugan Vellayappan
- Department of Radiation Oncology, National University Cancer Institute, Singapore; National University Hospital, Singapore; National University Health System, Singapore; National University of Singapore, Singapore.
| | - Cheng Nang Leong
- Department of Radiation Oncology, National University Cancer Institute, Singapore; National University Hospital, Singapore; National University Health System, Singapore; National University of Singapore, Singapore.
| | - Wee Yao Koh
- Department of Radiation Oncology, National University Cancer Institute, Singapore; National University Hospital, Singapore; National University Health System, Singapore; National University of Singapore, Singapore.
| | - Jeremy C S Tey
- Department of Radiation Oncology, National University Cancer Institute, Singapore; National University Hospital, Singapore; National University Health System, Singapore; National University of Singapore, Singapore.
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Saunders J, Ashton M, Hall C, Laird B, MacLeod N. Pain management in patients with malignant mesothelioma: challenges and solutions. LUNG CANCER-TARGETS AND THERAPY 2019; 10:37-46. [PMID: 31037036 PMCID: PMC6450333 DOI: 10.2147/lctt.s192558] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
Malignant pleural mesothelioma (MPM) is an aggressive cancer with a considerable symptom burden and poor prognosis. Focus on maintaining patients’ quality of life and pain control is therefore paramount. Pain management in MPM is complex due to its multifactorial etiology resulting from direct tumor infiltration of the surrounding soft tissue, bone, and encasement of the intercostal nerves. A variety of treatment modalities, including pharmacological and non-pharmacological options, are often required to achieve adequate pain control in this challenging disease. This review article examines the current challenges and solutions available for pain management in MPM.
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Affiliation(s)
- J Saunders
- Beatson West of Scotland Cancer Centre, Glasgow G12 0YN, UK,
| | - M Ashton
- Beatson West of Scotland Cancer Centre, Glasgow G12 0YN, UK, .,Institute of Cancer Sciences, University of Glasgow, UK
| | - C Hall
- Institute of Genetics and Molecular Medicine, University of Edinburgh, Edinburgh EH4 2XR, UK.,St Columba's Hospice, Edinburgh EH5 3RW, UK
| | - B Laird
- Institute of Genetics and Molecular Medicine, University of Edinburgh, Edinburgh EH4 2XR, UK.,St Columba's Hospice, Edinburgh EH5 3RW, UK
| | - N MacLeod
- Beatson West of Scotland Cancer Centre, Glasgow G12 0YN, UK,
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Bayman N, Appel W, Ashcroft L, Baldwin DR, Bates A, Darlison L, Edwards JG, Ezhil V, Gilligan D, Hatton M, Jegannathen A, Mansy T, Peake MD, Pemberton L, Rintoul RC, Snee M, Ryder WD, Taylor P, Faivre-Finn C. Prophylactic Irradiation of Tracts in Patients With Malignant Pleural Mesothelioma: An Open-Label, Multicenter, Phase III Randomized Trial. J Clin Oncol 2019; 37:1200-1208. [PMID: 30920878 DOI: 10.1200/jco.18.01678] [Citation(s) in RCA: 36] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022] Open
Abstract
PURPOSE Prophylactic irradiation to the chest wall after diagnostic or therapeutic procedures in patients with malignant pleural mesothelioma (MPM) has been a widespread practice across Europe, although the efficacy of this treatment is uncertain. In this study, we aimed to determine the efficacy of prophylactic radiotherapy in reducing the incidence of chest wall metastases (CWM) after a procedure in MPM. METHODS After undergoing a chest wall procedure, patients with MPM were randomly assigned to receive prophylactic radiotherapy (within 42 days of the procedure) or no radiotherapy. Open thoracotomies, needle biopsies, and indwelling pleural catheters were excluded. Prophylactic radiotherapy was delivered at a dose of 21 Gy in three fractions over three consecutive working days, using a single electron field adapted to maximize coverage of the tract from skin surface to pleura. The primary outcome was the incidence of CWM within 6 months from random assignment, assessed in the intention-to-treat population. Stratification factors included epithelioid histology and intention to give chemotherapy. RESULTS Between July 30, 2012, and December 12, 2015, 375 patients were recruited from 54 centers and randomly assigned to receive prophylactic radiotherapy (n = 186) or no prophylactic radiotherapy (n = 189). Participants were well matched at baseline. No significant difference was seen in the incidence of CWM at 6 months between the prophylactic radiotherapy and no radiotherapy groups (no. [%]: 6 [3.2] v 10 [5.3], respectively; odds ratio, 0.60; 95% CI, 0.17 to 1.86; P = .44). Skin toxicity was the most common radiotherapy-related adverse event in the prophylactic radiotherapy group, with 96 patients (51.6%) receiving grade 1; 19 (10.2%), grade 2; and 1 (0.5%) grade 3 radiation dermatitis (Common Terminology Criteria for Adverse Events, version 4.0). CONCLUSION There is no role for the routine use of prophylactic irradiation to chest wall procedure sites in patients with MPM.
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Affiliation(s)
- Neil Bayman
- 1 The Christie National Health Service Foundation Trust, Manchester, United Kingdom
| | - Wiebke Appel
- 2 Lancashire Teaching Hospitals National Health Service Foundation Trust, Preston, United Kingdom
| | - Linda Ashcroft
- 1 The Christie National Health Service Foundation Trust, Manchester, United Kingdom
| | - David R Baldwin
- 3 Nottingham University Hospitals National Health Service Trust, Nottingham, United Kingdom
| | - Andrew Bates
- 4 University Hospital Southampton National Health Service Foundation Trust, Southampton, United Kingdom
| | - Liz Darlison
- 5 University Hospitals of Leicester National Health Service Trust, Leicester, United Kingdom
| | - John G Edwards
- 6 Sheffield Teaching Hospitals National Health Service Foundation Trust, Sheffield, United Kingdom
| | - Veni Ezhil
- 7 Royal Surrey County Hospital, National Health Service Foundation Trust, Guildford, United Kingdom
| | - David Gilligan
- 8 Cambridge University Hospital National Health Service Foundation Trust, Cambridge, United Kingdom
| | - Matthew Hatton
- 6 Sheffield Teaching Hospitals National Health Service Foundation Trust, Sheffield, United Kingdom
| | - Apurna Jegannathen
- 9 University Hospitals of North Midlands National Health Service Trust, Stoke-on-Trent, United Kingdom
| | - Talal Mansy
- 10 South Tees Hospitals National Health Service Foundation Trust, Middlesbrough, United Kingdom
| | - Michael D Peake
- 5 University Hospitals of Leicester National Health Service Trust, Leicester, United Kingdom
| | - Laura Pemberton
- 1 The Christie National Health Service Foundation Trust, Manchester, United Kingdom
| | - Robert C Rintoul
- 11 Cancer Research UK Cambridge Centre, Cambridge, United Kingdom
| | - Michael Snee
- 12 Leeds Teaching Hospitals National Health Service Trust, Leeds, United Kingdom
| | - W David Ryder
- 1 The Christie National Health Service Foundation Trust, Manchester, United Kingdom
| | - Paul Taylor
- 13 Manchester University National Health Service Foundation Trust, Manchester, United Kingdom
| | - Corinne Faivre-Finn
- 1 The Christie National Health Service Foundation Trust, Manchester, United Kingdom.,14 University of Manchester, Manchester, United Kingdom
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The Future of Mesothelioma Research: Basic Science Research. CARING FOR PATIENTS WITH MESOTHELIOMA: PRINCIPLES AND GUIDELINES 2019. [PMCID: PMC7119960 DOI: 10.1007/978-3-319-96244-3_18] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 11/02/2022]
Abstract
Our current understanding of mesothelioma in terms of disease induction, development, and treatment is underpinned by decades of basic laboratory science. In this chapter, we discuss the tools that have been developed to aid our understanding of mesothelioma such as cell lines and animal models. We then go on to detail the current use and understanding of conventional therapies for mesothelioma, e.g. chemotherapy, surgery, and radiotherapy, plus their mechanisms of action, and why they may be ineffective. Finally, we discuss a range of newer treatments that are either undergoing clinical trials or are still in the earlier stages of preclinical investigation. These include a growing number of immunotherapies (e.g. checkpoint inhibitors), plus targeted therapies, the search for clinical biomarkers to predict whether patients with mesothelioma might respond to particular treatments, and combined therapies where conventional treatments may be added to newer drugs. The strategy of repositioning existing drugs, approved for other diseases, to treat mesothelioma is also discussed.
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Halford P, Clive AO. Is there a role for prophylactic radiotherapy to intervention tract sites in patients with malignant pleural mesothelioma? Transl Lung Cancer Res 2018; 7:584-592. [PMID: 30450297 DOI: 10.21037/tlcr.2018.07.06] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
Malignant pleural mesothelioma has a high morbidity and poor prognosis. Most patients undergo invasive pleural interventions to either facilitate diagnosis and/or alleviate symptoms from malignant pleural effusion. Procedure tract metastasis (PTM) are a well-known complication of pleural procedures in mesothelioma and there has been longstanding debate regarding the role of prophylactic irradiation of tracts in preventing them. This review summarises the existing evidence surrounding this controversial topic. Despite initial discrepancies amongst the results of 3 small, historical trials regarding the efficacy of prophylactic radiotherapy in mesothelioma, two large randomised-control trials have recently provided more clarity. The SMART trial, which randomised over 200 patients, found no benefit of prophylactic radiotherapy in reducing PTM incidence in their primary analysis, with a number needed to treat (NNT) of 25.1 to prevent a single painful PTM. Additionally, there was no benefit in terms of symptomology, health-related quality of life parameters or cost-effectiveness. This is supported by the preliminary results of the Prophylactic Irradiation of Tracts in Patients with Pleural Mesothelioma (PIT) trial, which randomised 375 patients and also found no evidence that prophylactic radiotherapy reduced PTM incidence, although the full results are still awaited. Combined analysis of these trials is planned, which will help clarify whether specific subpopulations may derive benefit from prophylactic radiotherapy, such as patients not receiving chemotherapy. Based on the currently available evidence there is no role for routine delivery of prophylactic radiotherapy to prevent PTM in mesothelioma. Instead holistic and vigilant follow-up of patients is recommended, aiming for adequate palliation of symptoms and support for patients. Should painful nodules develop these can be effectively treated with subsequent palliative radiotherapy. After years of uncertainty and debate, recent international guidelines have consistently advised against the use of prophylactic irradiation of tracts based on contemporary high-quality evidence.
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Affiliation(s)
- Paul Halford
- Academic Respiratory Unit, School of Clinical Sciences, University of Bristol, Bristol, UK
| | - Amelia O Clive
- North Bristol NHS Trust, Southmead Hospital, Bristol, UK
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8
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Cramer G, Simone CB, Busch TM, Cengel KA. Adjuvant, neoadjuvant, and definitive radiation therapy for malignant pleural mesothelioma. J Thorac Dis 2018; 10:S2565-S2573. [PMID: 30206500 DOI: 10.21037/jtd.2018.07.65] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
While ionizing radiotherapy (RT) can provide durable local control, the relative radiosensitivity of surrounding organs such as the lungs and heart and the distributed nature of the pleura limit the ability to safely deliver RT for patients with malignant pleural mesothelioma (MPM). Recent advances in the technological sophistication of RT planning and delivery devices have resulted in increased spatial control of irradiation dose that has extended the palliative and definitive applications of RT for patients with MPM. This review will outline the logistical, mechanistic and clinical basics of RT and the clinical trials supporting the use of RT in the multidisciplinary care of patients with MPM.
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Affiliation(s)
- Gwendolyn Cramer
- Department of Radiation Oncology, Hospital of the University of Pennsylvania, Perelman School of Medicine, Philadelphia, PA, USA
| | - Charles B Simone
- Department of Radiation Oncology, University of Maryland School of Medicine, Baltimore, MD, USA
| | - Theresa M Busch
- Department of Radiation Oncology, Hospital of the University of Pennsylvania, Perelman School of Medicine, Philadelphia, PA, USA
| | - Keith A Cengel
- Department of Radiation Oncology, Hospital of the University of Pennsylvania, Perelman School of Medicine, Philadelphia, PA, USA
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Woolhouse I, Bishop L, Darlison L, De Fonseka D, Edey A, Edwards J, Faivre-Finn C, Fennell DA, Holmes S, Kerr KM, Nakas A, Peel T, Rahman NM, Slade M, Steele J, Tsim S, Maskell NA. British Thoracic Society Guideline for the investigation and management of malignant pleural mesothelioma. Thorax 2018; 73:i1-i30. [PMID: 29444986 DOI: 10.1136/thoraxjnl-2017-211321] [Citation(s) in RCA: 121] [Impact Index Per Article: 20.2] [Reference Citation Analysis] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Affiliation(s)
- Ian Woolhouse
- Department of Respiratory Medicine, University Hospitals Birmingham, NHS Foundation Trust, Birmingham, UK
| | - Lesley Bishop
- Department of Respiratory Medicine, University Hospitals Birmingham, NHS Foundation Trust, Birmingham, UK
| | - Liz Darlison
- Respiratory Medicine, University Hospitals of Leicester, Leicester, UK
| | | | | | | | | | - Dean A Fennell
- University of Leicester & University Hospitals of Leicester, Leicester, UK
| | - Steve Holmes
- The Park Medical Practice, Shepton Mallet, Somerset, UK
| | | | - Apostolos Nakas
- Department of Thoracic Surgery, Glenfield Hospital, Leicester, UK
| | - Tim Peel
- North Tyneside General Hospital, North Shields, UK
| | - Najib M Rahman
- Oxford NIHR Biomedical Research, University of Oxford, Oxford, UK
| | - Mark Slade
- Papworth Hospital, Thoracic Oncology, Cambridge, UK
| | | | - Selina Tsim
- Respiratory Medicine, Queen Elizabeth University Hospital, Glasgow, UK
| | - Nick A Maskell
- Academic Respiratory Unit, Bristol Medical School, University of Bristol, Bristol, UK
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10
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Prophylactic radiotherapy for procedure tract metastases in mesothelioma: a review. Curr Opin Pulm Med 2018; 23:357-364. [PMID: 28426469 DOI: 10.1097/mcp.0000000000000385] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
PURPOSE OF REVIEW Malignant pleural mesothelioma is an aggressive malignancy with a very poor prognosis. The majority of patients require pleural procedures for diagnostic or fluid management purposes. Damage to the pleura during these procedures can lead to procedure tract metastases (PTMs), with increasing risk from larger interventions. Prophylactic radiotherapy to these sites is a controversial topic with conflicting results from trial data. In this review, we summarize the recent evidence. RECENT FINDINGS Four RCTs have been published on this topic, with another in follow-up. The earliest, from a cohort of 40 patients, strongly advocated the use of prophylactic radiotherapy. More recent trials, most notably the Surgical and large bore procedures in Malignant pleural mesothelioma And Radiotherapy Trial (SMART) (which randomized over 200 patients) did not demonstrate any benefit, especially when patient report symptoms and cost-effectiveness are considered. Certain subgroups demand further investigation, such as those not receiving systematic chemotherapy or with surgical intervention sites. The soon to be published Prophylactic Irradiation of Tracts (PIT) trial may help to further clarify best practice. SUMMARY Recent studies have shown that prophylactic radiotherapy should not be routinely used to prevent PTMs in mesothelioma. Instead patients should undergo careful clinical follow-up to ensure PTMs are identified and treated promptly to minimize symptoms.
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Evaluating quality of life and cost implications of prophylactic radiotherapy in mesothelioma: Health economic analysis of the SMART trial. PLoS One 2018; 13:e0190257. [PMID: 29401495 PMCID: PMC5798762 DOI: 10.1371/journal.pone.0190257] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2017] [Accepted: 12/08/2017] [Indexed: 11/19/2022] Open
Abstract
BACKGROUND The SMART trial is a UK-based, multicentre RCT comparing prophylactic radiotherapy and symptom-based (deferred) radiotherapy in 203 patients with Malignant Pleural Mesothelioma who had undergone large bore pleural interventions. Using costs and quality of life data collected alongside the clinical trial, we will estimate the cost-effectiveness of prophylactic radiotherapy compared to deferred radiotherapy over a 1-year period. METHODS Healthcare utilization and costs were captured during the trial. Utility weights produced by the EQ-5D questionnaire were used to determine quality-adjusted life-years (QALY) gained. The incremental cost-effectiveness ratio was calculated over the one-year trial period. RESULTS Costs were similar in the immediate and deferred radiotherapy groups: £5480.40 (SD = £7040; n = 102) and £5461.40 (SD = £7770; n = 101) respectively. There was also no difference in QALY: 0.498 (95% CI: [0.45, 0.547]) in the prophylactic radiotherapy group versus 0.525 (95% CI: [0.471, 0.580]) in the deferred group. At a willingness to pay threshold of £30,000/QALY there was only a 24% chance that prophylactic radiotherapy was cost-effective compared to deferred radiotherapy. CONCLUSIONS There was no significant effect of prophylactic radiotherapy on quality of life in the intervention group, nor was there any discernable decrease in healthcare costs. There is little evidence to suggest that prophylactic radiotherapy is a cost-effective intervention in this population. TRIAL REGISTRATION ISRCTN72767336 with ISRCTN.
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12
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Abstract
Mesothelioma is an aggressive cancer of pleural and peritoneal cells that is difficult to diagnose and monitor. Numerous studies have attempted to identify a blood- or pleural fluid-based biomarker that could be used in the diagnostic pathway. More recently, there has been interest in the ability of serum/plasma biomarkers to monitor mesothelioma, given the development of newer treatments and limitations of radiological assessment. The majority of research has focused on soluble mesothelin, a soluble glycoprotein expressed by mesothelial cells. Although soluble mesothelin lacks the sensitivity to be used as a standalone diagnostic marker, serial measurements may be informative, with rising concentrations indicating disease progression and poor survival. High concentrations of other soluble glycoproteins, such as osteopontin, fibulin-3 and vascular endothelial growth factor are independently associated with poor prognosis at baseline, although further research is required to ascertain any role outside of clinical trials. More recent literature has focused on the development of novel biomarkers from discovery cohorts. Although many DNA and mRNA biomarkers show promise in the diagnosis or screening of mesothelioma, none have been prospectively evaluated for use in clinical practice. In this review article, we highlight the potential utility of biomarkers and evaluate the existing literature.
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Affiliation(s)
- David T Arnold
- Academic Respiratory Unit, School of Clinical Sciences, University of Bristol, Bristol, UK
| | - Nick A Maskell
- Academic Respiratory Unit, School of Clinical Sciences, University of Bristol, Bristol, UK
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13
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Carette H, Faivre JC, Salleron J, Baumann AS, Uwer L, Clément-Duchêne C, Vignaud JM, Petit I, Siat J, Tiotiu A, Beckendorf V. [Prophylactic radiotherapy in a single fraction of 10Gy at intervention pleural site in patient with malignant pleural mesothelioma: A retrospective monocentric cohort study]. Cancer Radiother 2017; 21:774-783. [PMID: 29132802 DOI: 10.1016/j.canrad.2017.06.011] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2017] [Revised: 05/20/2017] [Accepted: 06/09/2017] [Indexed: 11/18/2022]
Abstract
PURPOSE Prophylactic radiotherapy to prevent procedure-tracts metastases from malignant pleural mesothelioma remains controversial and clinical practice varies. The purpose was to assess the efficacy of local radiotherapy in a single fraction of 10Gy in preventing malignant seeding at intervention pleural site in patients with malignant pleural mesothelioma. MATERIAL AND METHODS This is a retrospective cohort study, including patients with histological confirmed malignant pleural mesothelioma treated by prophylactic irradiation to prevent interventional site metastases with a unique fraction of 10Gy with 6 to 18MeV, from January 1990 to December 2013 in the institut de cancérologie de Lorraine (Nancy, France). RESULTS Ninety-one patients were treated by irradiation in intervention site, involving 120 intervention pleural sites, 91 thoracoscopies, 17 thoracotomies with chest drain and 12 CT or ultrasound guided needle biopsies. The median follow-up was 7 months (interquartile between 3 and 15 months). The overall survival was 43.5% at 12 months. The local progression free survival was 43.7% at 12 month. The incidence of local recurrence was 8% at 12 months. The median interval from radiotherapy to local recurrence was 4 months (2; 32). No grade II or higher toxicity was observed. CONCLUSION Irradiation of pleural intervention sites with a single fraction of 10Gy is effective, well tolerated, simple, fast and cost effective.
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Affiliation(s)
- H Carette
- Département de pneumologie, CHRU de Nancy, rue du Morvan, 54511 Vandœuvre-lès-Nancy, France
| | - J-C Faivre
- Département de radiothérapie, institut de cancérologie de Lorraine Alexis-Vautrin, 6, avenue de Bourgogne CS 30519, 54519 Vandœuvre-lès-Nancy, France.
| | - J Salleron
- Département de biostatistiques, institut de cancérologie de Lorraine Alexis-Vautrin, 6, avenue de Bourgogne CS 30519, 54519 Vandœuvre-lès-Nancy, France
| | - A-S Baumann
- Département de radiothérapie, institut de cancérologie de Lorraine Alexis-Vautrin, 6, avenue de Bourgogne CS 30519, 54519 Vandœuvre-lès-Nancy, France
| | - L Uwer
- Département d'oncologie médicale, institut de cancérologie de Lorraine Alexis-Vautrin, 6, avenue de Bourgogne CS 30519, 54519 Vandœuvre-lès-Nancy, France
| | - C Clément-Duchêne
- Département d'oncologie médicale, institut de cancérologie de Lorraine Alexis-Vautrin, 6, avenue de Bourgogne CS 30519, 54519 Vandœuvre-lès-Nancy, France
| | - J-M Vignaud
- Laboratoire d'anatomie et cytologie pathologiques, CHRU de Nancy, rue du Morvan, 54511 Vandœuvre-lès-Nancy, France
| | - I Petit
- Département de radiologie, CHRU de Nancy, rue du Morvan, 54511 Vandœuvre-lès-Nancy, France
| | - J Siat
- Département de chirurgie thoracique, CHRU de Nancy, rue du Morvan, 54511 Vandœuvre-lès-Nancy, France
| | - A Tiotiu
- Département de pneumologie, CHRU de Nancy, rue du Morvan, 54511 Vandœuvre-lès-Nancy, France
| | - V Beckendorf
- Département de radiothérapie, institut de cancérologie de Lorraine Alexis-Vautrin, 6, avenue de Bourgogne CS 30519, 54519 Vandœuvre-lès-Nancy, France
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de Perrot M, Wu L, Wu M, Cho BCJ. Radiotherapy for the treatment of malignant pleural mesothelioma. Lancet Oncol 2017; 18:e532-e542. [PMID: 28884702 DOI: 10.1016/s1470-2045(17)30459-x] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2017] [Revised: 06/06/2017] [Accepted: 06/08/2017] [Indexed: 12/21/2022]
Abstract
Malignant pleural mesothelioma is an aggressive disease that continues to be associated with poor outcomes. Although, traditionally this disease is considered to be resistant to radiotherapy, more recent evidence suggests that radiotherapy can produce positive outcomes. Over the past 15 years, the development of new, highly conformal radiotherapy techniques, such as intensity-modulated radiation therapy (IMRT), has enabled investigators to optimise the delivery of high-dose radiotherapy to the whole of the hemithorax. Prospective single-arm trials have shown that the median survival of patients who have completed high-dose hemithoracic radiotherapy after extrapleural pneumonectomy could reach 23·9-39·4 months independent of the chemotherapeutic response, suggesting that IMRT could potentially have an intrinsic benefit to this subset of patients. These observations have led to a change in practice, with the introduction of adjuvant pleural IMRT after pleurectomy-decortication and the development of induction-accelerated hemithoracic IMRT followed by extrapleural pneumonectomy. This Review focuses on recent observations on the role of radiotherapy in the treatment of malignant pleural mesothelioma, with particular emphasis on the results of clinical trials that evaluate the role of high-dose hemithoracic radiotherapy.
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Affiliation(s)
- Marc de Perrot
- Division of Thoracic Surgery, Princess Margaret Cancer Centre and Toronto General Hospital, University Health Network, University of Toronto, ON, Canada.
| | - Licun Wu
- Latner Thoracic Surgery Laboratories, Princess Margaret Cancer Centre and Toronto General Hospital, University Health Network, University of Toronto, ON, Canada
| | - Matthew Wu
- Latner Thoracic Surgery Laboratories, Princess Margaret Cancer Centre and Toronto General Hospital, University Health Network, University of Toronto, ON, Canada
| | - B C John Cho
- Department of Radiation Oncology, Princess Margaret Cancer Centre and Toronto General Hospital, University Health Network, University of Toronto, ON, Canada
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15
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Eastment JG, Burke JP, Fong KM, Yang IA, Bowman RV. Radiation therapy for preventing instrumentation track metastases in malignant pleural mesothelioma. Hippokratia 2017. [DOI: 10.1002/14651858.cd012541] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
| | - Joseph P Burke
- The University of Queensland; School of Medicine; Brisbane Australia
| | - Kwun M Fong
- The Prince Charles Hospital; Department of Thoracic Medicine; Rode Road Brisbane Queensland Australia 4032
- The University of Queensland; UQ Thoracic Research Centre, School of Medicine; Brisbane Queensland Australia 4072
| | - Ian A Yang
- The Prince Charles Hospital; Department of Thoracic Medicine; Rode Road Brisbane Queensland Australia 4032
- The University of Queensland; UQ Thoracic Research Centre, School of Medicine; Brisbane Queensland Australia 4072
| | - Rayleen V Bowman
- The Prince Charles Hospital; Department of Thoracic Medicine; Rode Road Brisbane Queensland Australia 4032
- The University of Queensland; UQ Thoracic Research Centre, School of Medicine; Brisbane Queensland Australia 4072
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16
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Simone CB, Busch TM, Cengel KA. Radiotherapy and Photodynamic Therapy for Malignant Pleural Mesothelioma. ASBESTOS AND MESOTHELIOMA 2017. [DOI: 10.1007/978-3-319-53560-9_14] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
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17
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Clive AO, Taylor H, Maskell NA. Prophylactic radiotherapy to prevent procedure-tract metastases – Author's reply. Lancet Oncol 2016; 17:e419. [DOI: 10.1016/s1470-2045(16)30454-5] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2016] [Accepted: 09/16/2016] [Indexed: 10/20/2022]
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18
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Ceresoli GL, Vavassori V. Radiotherapy to intervention sites in mesothelioma: no more? Lancet Oncol 2016; 17:1025-1027. [DOI: 10.1016/s1470-2045(16)30132-2] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2016] [Accepted: 05/04/2016] [Indexed: 10/21/2022]
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19
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Clive AO, Taylor H, Dobson L, Wilson P, de Winton E, Panakis N, Pepperell J, Howell T, Stewart SA, Penz E, Jordan N, Morley AJ, Zahan-Evans N, Smith S, Batchelor TJP, Marchbank A, Bishop L, Ionescu AA, Bayne M, Cooper S, Kerry A, Jenkins P, Toy E, Vigneswaran V, Gildersleve J, Ahmed M, McDonald F, Button M, Lewanski C, Comins C, Dakshinamoorthy M, Lee YCG, Rahman NM, Maskell NA. Prophylactic radiotherapy for the prevention of procedure-tract metastases after surgical and large-bore pleural procedures in malignant pleural mesothelioma (SMART): a multicentre, open-label, phase 3, randomised controlled trial. Lancet Oncol 2016; 17:1094-1104. [PMID: 27345639 PMCID: PMC4961873 DOI: 10.1016/s1470-2045(16)30095-x] [Citation(s) in RCA: 79] [Impact Index Per Article: 9.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2016] [Revised: 04/14/2016] [Accepted: 04/15/2016] [Indexed: 12/14/2022]
Abstract
BACKGROUND The use of prophylactic radiotherapy to prevent procedure-tract metastases (PTMs) in malignant pleural mesothelioma remains controversial, and clinical practice varies worldwide. We aimed to compare prophylactic radiotherapy with deferred radiotherapy (given only when a PTM developed) in a suitably powered trial. METHODS We did a multicentre, open-label, phase 3, randomised controlled trial in 22 UK hospitals of patients with histocytologically proven mesothelioma who had undergone large-bore pleural interventions in the 35 days prior to recruitment. Eligible patients were randomised (1:1), using a computer-generated sequence, to receive immediate radiotherapy (21 Gy in three fractions within 42 days of the pleural intervention) or deferred radiotherapy (same dose given within 35 days of PTM diagnosis). Randomisation was minimised by histological subtype, surgical versus non-surgical procedure, and pleural procedure (indwelling pleural catheter vs other). The primary outcome was the incidence of PTM within 7 cm of the site of pleural intervention within 12 months from randomisation, assessed in the intention-to-treat population. This trial is registered with ISRCTN, number ISRCTN72767336. FINDINGS Between Dec 23, 2011, and Aug 4, 2014, we randomised 203 patients to receive immediate radiotherapy (n=102) or deferred radiotherapy (n=101). The patients were well matched at baseline. No significant difference was seen in PTM incidence in the immediate and deferred radiotherapy groups (nine [9%] vs 16 [16%]; odds ratio 0·51 [95% CI 0·19-1·32]; p=0·14). The only serious adverse event related to a PTM or radiotherapy was development of a painful PTM within the radiotherapy field that required hospital admission for symptom control in one patient who received immediate radiotherapy. Common adverse events of immediate radiotherapy were skin toxicity (grade 1 in 50 [54%] and grade 2 in four [4%] of 92 patients vs grade 1 in three [60%] and grade 2 in two [40%] of five patients in the deferred radiotherapy group who received radiotherapy for a PTM) and tiredness or lethargy (36 [39%] in the immediate radiotherapy group vs two [40%] in the deferred radiotherapy group) within 3 months of receiving radiotherapy. INTERPRETATION Routine use of prophylactic radiotherapy in all patients with mesothelioma after large-bore thoracic interventions is not justified. FUNDING Research for Patient Benefit Programme from the UK National Institute for Health Research.
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Affiliation(s)
- Amelia O Clive
- Respiratory Research Unit, North Bristol National Health Service (NHS) Trust, Southmead Hospital, Bristol, UK; Academic Respiratory Unit, School of Clinical Sciences, University of Bristol, Bristol, UK
| | | | - Lee Dobson
- South Devon Healthcare NHS Foundation Trust, Torbay, UK
| | - Paula Wilson
- University Hospitals Bristol NHS Trust, Bristol, UK
| | | | - Niki Panakis
- Oxford University Hospitals NHS Trust, Oxford, UK
| | | | | | | | - Erika Penz
- Department of Medicine, University of Saskatchewan, Saskatoon, SK, Canada
| | - Nikki Jordan
- Respiratory Research Unit, North Bristol National Health Service (NHS) Trust, Southmead Hospital, Bristol, UK
| | - Anna J Morley
- Respiratory Research Unit, North Bristol National Health Service (NHS) Trust, Southmead Hospital, Bristol, UK
| | - Natalie Zahan-Evans
- Respiratory Research Unit, North Bristol National Health Service (NHS) Trust, Southmead Hospital, Bristol, UK
| | - Sarah Smith
- Respiratory Research Unit, North Bristol National Health Service (NHS) Trust, Southmead Hospital, Bristol, UK
| | | | | | | | - Alina A Ionescu
- Royal Gwent Hospital, Aneurin Bevan University Health Board, Newport, UK
| | - Mike Bayne
- Poole Hospital NHS Foundation Trust, Poole, UK; Dorset County Hospital NHS Foundation Trust, Dorchester, UK
| | - Samantha Cooper
- Colchester Hospital University NHS Foundation Trust, Colchester, UK
| | | | - Peter Jenkins
- Gloucestershire Hospitals NHS Foundation Trust, Gloucester, UK
| | - Elizabeth Toy
- Royal Devon and Exeter NHS Foundation Trust, Exeter, UK
| | | | | | - Merina Ahmed
- The Royal Marsden NHS Foundation Trust, London, UK
| | | | | | | | | | | | - Y C Gary Lee
- Centre for Respiratory Health, School of Medicine & Pharmacology, University of Western Australia, Perth, WA, Australia
| | - Najib M Rahman
- Oxford University Hospitals NHS Trust, Oxford, UK; Oxford National Institute for Health Research (NIHR) Biomedical Research Centre, Oxford, UK
| | - Nick A Maskell
- Respiratory Research Unit, North Bristol National Health Service (NHS) Trust, Southmead Hospital, Bristol, UK; Academic Respiratory Unit, School of Clinical Sciences, University of Bristol, Bristol, UK.
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