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Huang TL, Chuang HC, Tsai MH, Chien CY, Su YY, Lin YT, Yang CH, Lai CC, Li SH, Fang FM. Stereotactic body radiotherapy plus cetuximab for previously irradiated un-resectable head and neck cancer. Biomed J 2021; 45:838-846. [PMID: 34749016 DOI: 10.1016/j.bj.2021.10.013] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2021] [Revised: 10/28/2021] [Accepted: 10/31/2021] [Indexed: 11/16/2022] Open
Abstract
BACKGROUND The aim of the study was to explore the treatment outcomes and prognostic factors for patients with previously irradiated but unresectable recurrent head and neck squamous cell carcinoma (rHNSCC) treated by stereotactic body radiotherapy (SBRT) plus cetuximab at a single institute in Taiwan. METHODS From February 2016 to March 2019, 74 patients with previously irradiated but unresectable rHNSCC were treated with SBRT plus cetuximab. All patients received irradiation to the gross tumor and/or nodal area with 40-50 Gy in five fractions, with each fraction interval ≥ 2 days over a 2-week period by using the CyberKnife M6 machine. An18F-fluorodeoxyglucose positron emission tomography-computed tomography (PET-CT) scan was performed before treatment for treatment target delineation (n = 74) and 2 months later for response evaluation (n = 60). The median follow-up time was 9 months (range 1-36 months). RESULTS The treatment response rate was complete response: 25.0%, partial response: 41.7%, stable disease: 11.7%, and progressive disease: 21.7% based on the criteria of the Response Evaluation Criteria in Solid Tumors (n = 72) and complete metabolic response: 21.7%, partial metabolic response: 51.7%, stable metabolic disease: 13.3%, and progressive metabolic disease: 13.3% based on PET-CT (n = 60), respectively. The 1-/2-year overall survival (OS) and progression-free survival (PFS) rates were 42.8%/22.0% and 40.5%/19.0%, respectively. In the logistic regression model, a re-irradiation interval > 12 months was observed to be the only significant prognostic factor for a favorable treatment response. In the Cox proportional hazards model, a re-irradiation interval > 12 months and gross tumor volume (GTV) ≦ 50 ml were favorable prognostic factors of OS and PFS. CONCLUSION SBRT plus cetuximab provides a promising salvage strategy for those patients with previously irradiated but unresectable rHNSCC, especially those with a re-irradiation interval > 12 months or GTV ≦ 50 ml.
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Affiliation(s)
- Tai-Lin Huang
- Department of Hematology-Oncology, Kaohsiung Chang Gung Memorial Hospital and Chang Gung University College of Medicine, Kaohsiung, Taiwan
| | - Hui-Ching Chuang
- Department of Otolaryngology, Kaohsiung Chang Gung Memorial Hospital and Chang Gung University College of Medicine, Kaohsiung, Taiwan
| | - Ming-Hsien Tsai
- Department of Otolaryngology, Kaohsiung Chang Gung Memorial Hospital and Chang Gung University College of Medicine, Kaohsiung, Taiwan
| | - Chih-Yen Chien
- Department of Otolaryngology, Kaohsiung Chang Gung Memorial Hospital and Chang Gung University College of Medicine, Kaohsiung, Taiwan
| | - Yan-Ye Su
- Department of Otolaryngology, Kaohsiung Chang Gung Memorial Hospital and Chang Gung University College of Medicine, Kaohsiung, Taiwan
| | - Yu-Tsai Lin
- Department of Otolaryngology, Kaohsiung Chang Gung Memorial Hospital and Chang Gung University College of Medicine, Kaohsiung, Taiwan
| | - Chao-Hui Yang
- Department of Otolaryngology, Kaohsiung Chang Gung Memorial Hospital and Chang Gung University College of Medicine, Kaohsiung, Taiwan
| | - Chi-Chih Lai
- Department of Otolaryngology, Kaohsiung Chang Gung Memorial Hospital and Chang Gung University College of Medicine, Kaohsiung, Taiwan
| | - Shau-Hsuan Li
- Department of Hematology-Oncology, Kaohsiung Chang Gung Memorial Hospital and Chang Gung University College of Medicine, Kaohsiung, Taiwan
| | - Fu-Min Fang
- Department of Radiation Oncology, Kaohsiung Chang Gung Memorial Hospital and Chang Gung University College of Medicine, Kaohsiung, Taiwan; Department of Medicine, Chang Gung University College of Medicine, Taoyuan, Taiwan.
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Desideri I, Becherini C, Belgioia L, Merlotti A, Ciccone LP, Franzese C, Loi M, De Felice F, Mazzola R, Caini S, Livi L, Bonomo P. Palliative radiotherapy in older adults with head and neck squamous cell carcinoma: A systematic review. Oral Oncol 2021; 119:105355. [PMID: 34044315 DOI: 10.1016/j.oraloncology.2021.105355] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2021] [Revised: 04/26/2021] [Accepted: 05/16/2021] [Indexed: 11/30/2022]
Abstract
Locally advanced Head and neck squamous cell carcinoma (SCCHN) represents a common oncologic pathology in older adults (OA). While radiotherapy represents a cornerstone in this context, it is unclear what is the optimal radiation regimen for SCCHN in the palliative setting, especially for OA. This article addresses issues related to palliative radiotherapy (PRT) in this setting with a focus on treatment modalities and toxicity. We also explore the use of quality of life and geriatric assessment in this setting. Medline, Scopus and Embase databases were queried for articles in this setting. We included studies published from January 1, 2000 through June 1, 2020, that were independently evaluated by two authors. Analyzed endpoints were progression free survival (PFS), overall survival (OS) and PRT toxicities. The meta-analysis was performed using Stata v.14. A total of 33 studies were included in this meta-analysis. The pooled median OS is 7.7 months, 2-years OS was worse for higher radiation dose (p = 0.02). The pooled median PFS was 5.4 months, PFS was influenced by EQD2 (p = 0.01), with patients receiving an EQD2 < 40 Gy that presented a poorer outcome. Regarding acute toxicities, most common pooled G3 toxicities were mucositis (7%) and dysphagia (15%). Among late toxicity, most common G3 toxicity was dysphagia in 7% of patients. Radiotherapy should be the most effective palliative treatment in symptomatic SCCHN OA. A tailored approach, guided by geriatric tools, would be indicated to choose the right therapy.
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Affiliation(s)
- I Desideri
- Department of Biomedical, Experimental, and Clinical Sciences "Mario Serio", University of Florence, Viale Morgagni 85, 50134 Florence, Italy.
| | - C Becherini
- Azienda Ospedaliero Universitaria Careggi, University of Florence, Radiation Oncology Unit, Florence, Italy
| | - L Belgioia
- Department of Radiotherapy, Policlinico San Martino, University of Genoa, Genoa, Italy
| | - A Merlotti
- Department of Radiation Oncology, S. Croce and Carle Teaching Hospital, Cuneo, Italy
| | - L P Ciccone
- Department of Biomedical, Experimental, and Clinical Sciences "Mario Serio", University of Florence, Viale Morgagni 85, 50134 Florence, Italy
| | - C Franzese
- Humanitas Clinical and Research Center-IRCCS, Radiotherapy and Radiosurgery Dept., via Manzoni 56, 20089 Rozzano, MI, Italy; Humanitas University, Department of Biomedical Sciences, Via Rita Levi Montalcini 4, 20090 Pieve Emanuele-Milan, Italy
| | - M Loi
- Azienda Ospedaliero Universitaria Careggi, University of Florence, Radiation Oncology Unit, Florence, Italy
| | - F De Felice
- Department of Radiological Science, Oncology and Human Pathology, "Sapienza" University, Policlinico Umberto I, Rome, Italy
| | - R Mazzola
- Radiation Oncology Department, IRCCS, Sacro Cuore Don Calabria Hospital, Negrar-Verona, Italy
| | - S Caini
- Cancer Risk Factors and Lifestyle Epidemiology Unit, Institute for Cancer Research, Prevention and Clinical Network (ISPRO), Florence, Italy
| | - L Livi
- Department of Biomedical, Experimental, and Clinical Sciences "Mario Serio", University of Florence, Viale Morgagni 85, 50134 Florence, Italy; Azienda Ospedaliero Universitaria Careggi, University of Florence, Radiation Oncology Unit, Florence, Italy
| | - P Bonomo
- Azienda Ospedaliero Universitaria Careggi, University of Florence, Radiation Oncology Unit, Florence, Italy
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Iqbal MS, West N, Richmond N, Kovarik J, Gray I, Willis N, Morgan D, Yazici G, Cengiz M, Paleri V, Kelly C. A systematic review and practical considerations of stereotactic body radiotherapy in the treatment of head and neck cancer. Br J Radiol 2021; 94:20200332. [PMID: 32960652 PMCID: PMC7774675 DOI: 10.1259/bjr.20200332] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2020] [Revised: 08/12/2020] [Accepted: 08/20/2020] [Indexed: 12/22/2022] Open
Abstract
OBJECTIVES Stereotactic radiotherapy (SBRT) is gaining popularity although its use in head and neck cancer (HNC) is not well defined. The primary objective was to review the published evidence regarding the use of stereotactic radiotherapy in HNC. METHODS A literature search was performed by using MEDLINE and EMBASE databases for eligible studies from 2000 to 2019 and 26 relevant studies were identified. RESULTS Literature demonstrates a heterogeneous use of this technique with regards to patient population, primary or salvage treatment, dose fractionation regimens, outcomes and follow-up protocols. Carotid blow out syndrome is a risk as with other forms of reirradiation but alternative treatment regimens may reduce this risk. CONCLUSION At present there is a lack of evidence regarding SBRT as a primary treatment option for HNC and definitive answers regarding efficacy and tolerability cannot be provided but there is growing evidence that SBRT reirradiation regimens are safe and effective. In lieu of evidence from large Phase III trials, we define appropriate organ at risk constraints and prescription doses, with accurate plan summation approaches. Prospective randomised trials are warranted to validate improved treatment outcomes and acceptable treatment morbidity. ADVANCES IN KNOWLEDGE This article provides a comprehensive review of evidence of use of stereotactic radiotherapy in HNC site (either as a primary treatment or as reirradiation). We also provide an evidence-based approach to the implementation and practical consideration of stereotactic radiotherapy in HNC.
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Affiliation(s)
- Muhammad Shahid Iqbal
- Department of Clinical Oncology, Northern Centre for Cancer Care, The Newcastle upon Tyne Hospitals NHS Foundation Trust, Newcastle upon Tyne, United Kingdom
| | - Nick West
- Department of Radiotherapy Physics, Northern Centre for Cancer Care, The Newcastle upon Tyne Hospitals NHS Foundation Trust, Newcastle upon Tyne, United Kingdom
| | - Neil Richmond
- Department of Radiotherapy Physics, Northern Centre for Cancer Care, The Newcastle upon Tyne Hospitals NHS Foundation Trust, Newcastle upon Tyne, United Kingdom
| | - Josef Kovarik
- Department of Clinical Oncology, Northern Centre for Cancer Care, The Newcastle upon Tyne Hospitals NHS Foundation Trust, Newcastle upon Tyne, United Kingdom
| | - Isabel Gray
- Department of Clinical Oncology, Northern Centre for Cancer Care, The Newcastle upon Tyne Hospitals NHS Foundation Trust, Newcastle upon Tyne, United Kingdom
| | - Nick Willis
- Department of Radiotherapy Dosimetry, Northern Centre for Cancer Care, The Newcastle upon Tyne Hospitals NHS Foundation Trust, Newcastle upon Tyne, United Kingdom
| | - David Morgan
- Department of Radiotherapy Physics, Northern Centre for Cancer Care, The Newcastle upon Tyne Hospitals NHS Foundation Trust, Newcastle upon Tyne, United Kingdom
| | - Gozde Yazici
- Department of Radiation Oncology, Hacettepe University, Ankara, Turkey
| | - Mustafa Cengiz
- Department of Radiation Oncology, Hacettepe University, Ankara, Turkey
| | - Vinidh Paleri
- The Royal Marsden NHS Foundation Trust, London, United Kingdom
| | - Charles Kelly
- Department of Clinical Oncology, Northern Centre for Cancer Care, The Newcastle upon Tyne Hospitals NHS Foundation Trust, Newcastle upon Tyne, United Kingdom
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Hypofractionated Radiotherapy for Anaplastic Thyroid Cancer: Systematic Review and Pooled Analysis. Cancers (Basel) 2020; 12:cancers12092506. [PMID: 32899355 PMCID: PMC7563200 DOI: 10.3390/cancers12092506] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2020] [Revised: 08/28/2020] [Accepted: 09/01/2020] [Indexed: 02/06/2023] Open
Abstract
Simple Summary Anaplastic thyroid carcinoma is an aggressive cancer subtype with a dismal prognosis. Multimodal treatment approaches consisting of surgical resection, radiation therapy (RT) and chemotherapy have resulted in longer overall survival and promising outcomes. Hypofractionated RT is an alternative to conventional RT regimens. In this study, we aim to evaluate the outcome of hypofractionated regimens, perform a systematic review concerning hypofractionated RT and pooled analysis of this treatment modality. Hypofractionated RT appears to be non-inferior compared to conventional RT concerning OS after propensity score matching. In addition, radiation dose escalation correlated with a longer OS. In conclusion, hypofractionated RT is effective with manageable toxicity and could be an integral part in multimodal treatment. Abstract Anaplastic thyroid carcinoma (ATC) is associated with a poor prognosis due to aggressive tumor growth and high treatment resistance. Hypofractionated treatment concepts may be more effective and less time consuming compared to normofractionated radiotherapy (RT). In this retrospective study, we aim to evaluate the outcome of hypofractionated regimens and perform a systematic review concerning hypofractionated RT and pooled analysis of this treatment modality. A systematic review using the MEDLINE/Pubmed and Cochrane databases was performed. Data from all eligible studies were extracted, and a pooled analysis of literature and our cohort (n = 60) was carried out to examine patient characteristics, toxicity, and outcomes of patients with ATC. As a result, median overall survival (OS) of the single center cohort was four (range 1–12) months. Survival rates at one, three, and six months were 82%, 55%, and 36%, respectively. In univariate analyses, multimodal treatment (p = 0.006) and gender (p = 0.04) were correlated with an improved OS. Six studies with a total number of 152 patients undergoing hypofractionated RT treatment were analyzed. The pooled analysis included four patient cohorts with 60 patients and showed median OS of 5.3 (range: 1–24) months. Multimodal treatment (p < 0.001) and a cumulative radiation dose ≥50 Gy in equivalent dose in 2 Gy fractions (EQD2) (p = 0.014) correlated with an improved OS. On multivariate analysis, multimodal treatment (p = 0.003, hazard ratio (HR): 0.636, 95% confidence interval (CI): 0.469–0.861) was an independent predictor for longer OS. After propensity score matching (PSM), hypofractionated RT appears to be non-inferior compared to normofractionated RT concerning OS. In conclusion, hypofractionated RT is effective with manageable toxicity. A dose escalation with ≥50 Gy (EQD2) correlated with a longer OS. Hypofractionated RT could be an integral part in multimodal treatment with a promising outcome.
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Hagen M, Kretschmer M, Würschmidt F, Gauer T, Giro C, Karsten E, Lorenzen J. Clinical relevance of metal artefact reduction in computed tomography (iMAR) in the pelvic and head and neck region: Multi-institutional contouring study of gross tumour volumes and organs at risk on clinical cases. J Med Imaging Radiat Oncol 2019; 63:842-851. [PMID: 31265214 DOI: 10.1111/1754-9485.12924] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2018] [Accepted: 06/03/2019] [Indexed: 11/27/2022]
Abstract
INTRODUCTION Artefacts caused by dental implants and hip replacements may impede target volume definition and dose calculation accuracy. The iterative metal artefact reduction (iMAR) algorithm can provide a solution for this problem. The present study compares delineation of gross tumour volumes (GTVs) and organs at risk (OARs) in the pelvic and the head and neck (H & N) regions using computed tomography (CT) with and without iMAR, and thus the practical applicability of iMAR for routine clinical use. METHODS The native planning CT and CT-iMAR data of two typical clinical cases with image-distorting artefacts were used for multi-institutional contouring and analysis using the Dice similarity coefficient (DSC). GTV/OAR contours were compared with an intraobserver approach and compared to predefined reference structures. RESULTS Mean volume for GTVprostate in the intraobserver approach decreased from 87 ± 44 cm3 (native CT) to 75 ± 22 cm3 (CT-iMAR) (P = 0.168). Compared to the reference, DSC values for GTVP rostate increased from 0.68 ± 0.15 to 0.78 ± 0.07 (CT vs. iMAR) (P < 0.05). In the H & N region, the reference for GTVT ongue (34 cm3 ) was underestimated on both data sets. No significant improvement in DSC values (0.83 ± 0.06 (native CT) versus 0.86 ± 0.06 (CT-iMAR)) was observed. CONCLUSION The use of iMAR improves the anatomical delineation at the transition of prostate and bladder in cases of bilateral hip replacement. In the H & N region, anatomical residual structures and experience were apparently sufficient for precise contouring.
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Affiliation(s)
| | | | | | - Tobias Gauer
- Department of Radiotherapy and Radio-Oncology, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
| | | | - Elias Karsten
- Department of Radiotherapy, University Medical Center Schleswig-Holstein, Kiel, Germany
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Comparison between hypo-fractionated dose-escalated volumetric modulated arc therapy and conventional concurrent chemo-radiation in locally advanced head and neck cancer: a pilot study. JOURNAL OF RADIOTHERAPY IN PRACTICE 2019. [DOI: 10.1017/s1460396919000335] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
AbstractObjective:In the treatment of locally advanced head and neck cancer (LA-HNC), both dose escalation and hypo-fractionation can improve tumour control rates with uncertain role of addition of concurrent chemotherapy. We aimed at developing a new radiotherapy protocol for patients not eligible to receive the standard concurrent chemo-radiation therapy (CCRT) with little toxicity profile.Methods:A total of 63 LA-HNC patients were randomised to receive either: 70 Gy in 35 fx in 7 weeks concurrently with cisplatin 100 mg/m2 every 3 weeks for 3 doses (Arm A) or 74 Gy in 33 fx in 6·5 weeks (Arm B). Volumetric modulated arc therapy plans were created for both treatment arms. We compared the local control (LC), progression-free survival (PFS), overall survival (OS) and acute and late toxicity between the two arms.Results:A total of 33 patients were in Arm A versus 30 patients in Arm B with median follow-up 24·2 months. No significant differences in LC, PFS and OS between the two arms. Complete remission occurred in 54·5 and 63·3% of patients in Arms A and B, respectively. All toxicities were significantly less in Arm B than Arm A.Conclusion:Slightly dose-escalated hypo-fractionated regimen is safe and feasible and has comparable efficacy and less acute and late side effects than conventional dose CCRT with avoidance of chemotherapy-related toxicities in LA-HNC patients.
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The Impact of p53 Dysfunction in ATR Inhibitor Cytotoxicity and Chemo- and Radiosensitisation. Cancers (Basel) 2018; 10:cancers10080275. [PMID: 30127241 PMCID: PMC6116113 DOI: 10.3390/cancers10080275] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2018] [Revised: 07/27/2018] [Accepted: 08/14/2018] [Indexed: 01/24/2023] Open
Abstract
Ataxia telangiectasia mutated and Rad3 related kinase (ATR) signals replication stress and DNA damage to S and G2 arrest and promotes DNA repair. Mutations in p53, critical for G1 checkpoint control, are common in cancer and predicted to confer vulnerability to ATR inhibitors. Reported data on the impact of p53 status are variable possibly because of the use of unmatched cells and surrogate endpoints of survival. The cytotoxicity of VE-821 alone and its ability to potentiate radiation and gemcitabine cytotoxicity was determined in isogenic and unmatched p53 wild-type (wt) and null/mutant cells, as well as immortalised nonmalignant MCF10 (immortalised non-neoplastic) cells, by colony-forming assay. The effect on cell cycle checkpoints was determined by flow cytometry. The isogenic p53 defective cells were not more sensitive to VE-821 alone. Defective p53 consistently conferred greater chemo- and radiosensitisation, particularly at high dose levels in isogenic cells but not unmatched cells. VE-821 did not sensitise MCF10 cells. We conclude that p53 status is just one factor contributing to chemo- and radiosensitisation by ATR inhibition, the lack of chemo- or radiosensitisation in the noncancerous cells suggests an element of tumour-specificity that warrants further investigation. The greater sensitisation at high-dose irradiation suggests that ATR inhibitors may be most effective with hypofractionated radiotherapy.
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Laursen M, Specht L, Kristensen CA, Gothelf A, Bernsdorf M, Vogelius I, Friborg J. An Extended Hypofractionated Palliative Radiotherapy Regimen for Head and Neck Carcinomas. Front Oncol 2018; 8:206. [PMID: 29942791 PMCID: PMC6004383 DOI: 10.3389/fonc.2018.00206] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2018] [Accepted: 05/22/2018] [Indexed: 12/25/2022] Open
Abstract
Background Palliative radiotherapy to patients with head and neck cancer is often necessary, but there is a substantial variation in the treatment regimens reported in the literature, and consensus on the most appropriate schedules does not exist. In order to minimize acute toxicity while at the same time trying to achieve prolonged tumor control, a long hypofractionated regimen has been used routinely in Denmark. In the current retrospective study, we investigated the outcome in patients intended for palliative radiotherapy with this regimen. Materials and methods Patients with newly diagnosed head and neck cancer treated with palliative radiotherapy of 52-56 Gy in 13-14 fractions twice weekly from 2009 to 2014 were included. Patients were excluded if they had previously received radiotherapy. Data on disease location, stage, patient performance status (PS), treatment response, acute skin and mucosal toxicity, and late fibrosis were collected prospectively and supplemented with information from medical records. Results 77 patients were included in the study. Fifty-eight patients (75%) completed the intended treatment. Loco-regional tumor response (complete or partial) was evaluated 2 months posttreatment and observed in 45% of the entire population corresponding to 71% of patients alive. PS had a significant influence on survival (p = 0.007) and on not completing the intended treatment. Grade III or IV acute mucositis were observed in 25%, and grade III or IV acute dermatitis observed in 15%. Conclusion Palliative hypofractionated radiotherapy with 52-56 Gy in 13-14 fractions shows good tumor response and tolerability in a vulnerable patient population. However, it may not be suited for patients in poor PS.
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Affiliation(s)
- Michael Laursen
- Department of Oncology, National University Hospital, Rigshospitalet, Copenhagen, Denmark
| | - Lena Specht
- Department of Oncology, National University Hospital, Rigshospitalet, Copenhagen, Denmark
| | | | - Anita Gothelf
- Department of Oncology, National University Hospital, Rigshospitalet, Copenhagen, Denmark
| | - Mogens Bernsdorf
- Department of Oncology, National University Hospital, Rigshospitalet, Copenhagen, Denmark
| | - Ivan Vogelius
- Department of Oncology, National University Hospital, Rigshospitalet, Copenhagen, Denmark
| | - Jeppe Friborg
- Department of Oncology, National University Hospital, Rigshospitalet, Copenhagen, Denmark
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Oweida A, Phan A, Vancourt B, Robin T, Hararah MK, Bhatia S, Milner D, Lennon S, Pike L, Raben D, Haugen B, Pozdeyev N, Schweppe R, Karam SD. Hypofractionated Radiotherapy Is Superior to Conventional Fractionation in an Orthotopic Model of Anaplastic Thyroid Cancer. Thyroid 2018; 28:739-747. [PMID: 29774792 PMCID: PMC6040202 DOI: 10.1089/thy.2017.0706] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
BACKGROUND Anaplastic thyroid cancer (ATC) is an aggressive and highly lethal disease with poor outcomes and resistance to therapy. Despite multimodality treatment, including radiation therapy and chemotherapy, response rates remain <15%, with a median time to progression of less than three months. Recent advances in radiotherapy (RT) delivery and gene-expression profiling may help guide patient selection for personalized therapy. The purpose of this study was to characterize the response to radiation in a panel of ATC cell lines and to test alternative RT fractionation schedules for overcoming radioresistance. MATERIALS AND METHODS The cellular response to radiation was characterized based on clonogenic assays. Radiation response was correlated with microarray gene-expression data. Hypofractionated and conventional RT was tested in an orthotopic ATC tumor model, and tumor growth was assayed locally and distantly with in vivo and ex vivo bioluminescence imaging. RESULTS A spectrum of radiosensitivities was observed in ATC cell lines. Radioresistant cell lines had higher levels of CXCR4 compared to radiosensitive cell lines. Compared to conventionally fractionated RT, hypofractionated RT resulted in significantly improved tumor growth delay, decreased regional and distant metastases, and improved overall survival. CONCLUSIONS The findings demonstrate the heterogeneity of response to radiation in ATC tumors and the superiority of hypofractionated RT in improving local control, metastatic spread, and survival in preclinical models. These data support the design of clinical trials targeting radioresistant pathways in combination with hypofractionated RT.
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Affiliation(s)
- Ayman Oweida
- Department of Radiation Oncology, University of Colorado Denver—Anschutz Medical Campus, Aurora, Colorado
| | - Andy Phan
- Department of Radiation Oncology, University of Colorado Denver—Anschutz Medical Campus, Aurora, Colorado
| | - Benjamin Vancourt
- Department of Radiation Oncology, University of Colorado Denver—Anschutz Medical Campus, Aurora, Colorado
| | - Tyler Robin
- Department of Radiation Oncology, University of Colorado Denver—Anschutz Medical Campus, Aurora, Colorado
| | - Mohammad K. Hararah
- Department of Otolaryngology and Head and Neck Surgery, University of Colorado Denver—Anschutz Medical Campus, Aurora, Colorado
| | - Shilpa Bhatia
- Department of Radiation Oncology, University of Colorado Denver—Anschutz Medical Campus, Aurora, Colorado
| | - Dallin Milner
- Department of Radiation Oncology, University of Colorado Denver—Anschutz Medical Campus, Aurora, Colorado
| | - Shelby Lennon
- Department of Radiation Oncology, University of Colorado Denver—Anschutz Medical Campus, Aurora, Colorado
| | - Laura Pike
- Division of Endocrinology, Diabetes, and Metabolism, University of Colorado Denver—Anschutz Medical Campus, Aurora, Colorado
| | - David Raben
- Department of Radiation Oncology, University of Colorado Denver—Anschutz Medical Campus, Aurora, Colorado
| | - Bryan Haugen
- Division of Endocrinology, Diabetes, and Metabolism, University of Colorado Denver—Anschutz Medical Campus, Aurora, Colorado
| | - Nikita Pozdeyev
- Division of Endocrinology, Diabetes, and Metabolism, University of Colorado Denver—Anschutz Medical Campus, Aurora, Colorado
| | - Rebecca Schweppe
- Division of Endocrinology, Diabetes, and Metabolism, University of Colorado Denver—Anschutz Medical Campus, Aurora, Colorado
| | - Sana D. Karam
- Department of Radiation Oncology, University of Colorado Denver—Anschutz Medical Campus, Aurora, Colorado
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