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van den Bovenkamp K, van der Vegt B, Halmos GB, Slagter-Menkema L, Langendijk JA, van Dijk BAC, Schuuring E, van der Laan BFAM. The relation between hypoxia and proliferation biomarkers with radiosensitivity in locally advanced laryngeal cancer. Eur Arch Otorhinolaryngol 2023; 280:3801-3809. [PMID: 37029804 PMCID: PMC10313532 DOI: 10.1007/s00405-023-07951-9] [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: 12/20/2022] [Accepted: 03/28/2023] [Indexed: 04/09/2023]
Abstract
PURPOSE Treatment decision-making in advanced-stage laryngeal squamous cell carcinoma (LSCC) is difficult due to the high recurrence rates and the desire to preserve laryngeal functions. New predictive markers for radiosensitivity are needed to facilitate treatment choices. In early stage glottic LSCC treated with primary radiotherapy, expression of hypoxia (HIF-1α and CA-IX) and proliferation (Ki-67) tumour markers showed prognostic value for local control. The objective of this study is to examine the prognostic value of tumour markers for hypoxia and proliferation on locoregional recurrent disease and disease-specific mortality in a well-defined cohort of patients with locally advanced LSCC treated with primary, curatively intended radiotherapy. METHODS In pre-treatment biopsy tissues from a homogeneous cohort of 61 patients with advanced stage (T3-T4, M0) LSCC primarily treated with radiotherapy, expression of HIF-1α, CA-IX and Ki-67 was evaluated with immunohistochemistry. Demographic data (age and sex) and clinical data (T- and N-status) were retrospectively collected from the medical records. Cox regression analysis was performed to assess the relation between marker expression, demographic and clinical data, and locoregional recurrence and disease-specific mortality. RESULTS Patients with high expression of HIF-1α developed significantly more often a locoregional recurrence (39%) compared to patients with a low expression (21%) (p = 0.002). The expression of CA-IX and Ki-67 showed no association with locoregional recurrent disease. HIF-1α, CA-IX and Ki-67 were not significantly related to disease-specific mortality. Clinical N-status was an independent predictor of recurrent disease (p < 0.001) and disease-specific mortality (p = 0.003). Age, sex and T-status were not related to locoregional recurrent disease or disease-specific mortality. CONCLUSION HIF-1α overexpression and the presence of regional lymph node metastases at diagnosis were independent predictors of locoregional recurrent disease after primary treatment with curatively intended radiotherapy in patients with locally advanced LSCC.
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Affiliation(s)
- Karlijn van den Bovenkamp
- Department of Otorhinolaryngology/Head and Neck Surgery, University Medical Center Groningen, University of Groningen, Groningen, The Netherlands
| | - Bert van der Vegt
- Department of Pathology, University Medical Center Groningen, University of Groningen, Hanzeplein 1, 9723 GZ Groningen, The Netherlands
| | - Gyorgy B. Halmos
- Department of Otorhinolaryngology/Head and Neck Surgery, University Medical Center Groningen, University of Groningen, Groningen, The Netherlands
| | - Lorian Slagter-Menkema
- Department of Pathology, University Medical Center Groningen, University of Groningen, Hanzeplein 1, 9723 GZ Groningen, The Netherlands
| | - Johannes A. Langendijk
- Department of Radiotherapy, University Medical Center Groningen, University of Groningen, Groningen, The Netherlands
| | - Boukje A. C. van Dijk
- Department of Epidemiology, University Medical Center Groningen, University of Groningen, Groningen, The Netherlands
- Department of Research and Development, Netherlands Comprehensive Cancer Organisation (IKNL), Utrecht, The Netherlands
| | - Ed Schuuring
- Department of Pathology, University Medical Center Groningen, University of Groningen, Hanzeplein 1, 9723 GZ Groningen, The Netherlands
| | - Bernard F. A. M. van der Laan
- Department of Otorhinolaryngology/Head and Neck Surgery, University Medical Center Groningen, University of Groningen, Groningen, The Netherlands
- Present Address: Department of Otorhinolaryngology/Head and Neck Surgery, Haaglanden Medical Center, The Hague, The Netherlands
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Alessandrini L, Astolfi L, Daloiso A, Sbaraglia M, Mondello T, Zanoletti E, Franz L, Marioni G. Diagnostic, Prognostic, and Therapeutic Role for Angiogenesis Markers in Head and Neck Squamous Cell Carcinoma: A Narrative Review. Int J Mol Sci 2023; 24:10733. [PMID: 37445908 DOI: 10.3390/ijms241310733] [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: 04/23/2023] [Revised: 06/14/2023] [Accepted: 06/25/2023] [Indexed: 07/15/2023] Open
Abstract
Despite refinements to diagnostic and therapeutic approaches over the last two decades, the outcome of patients with head and neck squamous cell carcinoma (HNSCC) has not shown substantial improvements, especially regarding those with advanced-stage disease. Angiogenesis is believed to be a turning point in the development of solid tumors, being a premise for mass growth and potential distant dissemination. Cancer-induced angiogenesis is a result of increased expression of angiogenic factors, decreased expression of anti-angiogenic factors, or a combination of both. The assessment of angiogenesis has also emerged as a potentially useful biological prognostic and predictive factor in HNSCC. The aim of this review is to assess the level of current knowledge on the neo-angiogenesis markers involved in the biology, behavior, and prognosis of HNSCC. A search (between 1 January 2012 and 10 October 2022) was run in PubMed, Scopus, and Web of Science electronic databases. After full-text screening and application of inclusion/exclusion criteria, 84 articles are included. The current knowledge and debate on angiogenesis in HNSCC presented in the eligible articles are stratified as follows: (i) diagnostic markers; (ii) prognostic markers; (iii) predictive markers; and (iv) markers with a potential therapeutic role. Angiogenesis is a biological and pathological indicator of malignancies progression and has negative implications in prognosis of some solid tumors; several signals capable of tripping the "angiogenic switch" have also been identified in HNSCC. Although several studies suggested that antiangiogenic agents might be a valuable adjunct to conventional chemo-radiation of HNSCC, their long-term therapeutic value remains uncertain. Further investigations are required on combinations of antiangiogenic agents with conventional chemotherapeutic ones, immunotherapeutic and molecularly targeted agents in HNSCC. Additional data are necessary to pinpoint which patients could benefit most from these treatments.
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Affiliation(s)
- Lara Alessandrini
- Surgical Pathology and Cytopathology Unit, Department of Medicine (DIMED), University of Padova, 35100 Padova, Italy
| | - Laura Astolfi
- Bioacustic Research Laboratory, Department of Neuroscience (DNS), University of Padova, 35100 Padova, Italy
| | - Antonio Daloiso
- Otolaryngology Section, Department of Neuroscience (DNS), University of Padova, 35100 Padova, Italy
| | - Marta Sbaraglia
- Surgical Pathology and Cytopathology Unit, Department of Medicine (DIMED), University of Padova, 35100 Padova, Italy
| | - Tiziana Mondello
- Otolaryngology Section, Department of Neuroscience (DNS), University of Padova, 35100 Padova, Italy
| | - Elisabetta Zanoletti
- Otolaryngology Section, Department of Neuroscience (DNS), University of Padova, 35100 Padova, Italy
| | - Leonardo Franz
- Otolaryngology Section, Department of Neuroscience (DNS), University of Padova, 35100 Padova, Italy
- Phoniatrics and Audiology Unit, Department of Neuroscience (DNS), University of Padova, 31100 Treviso, Italy
- Artificial Intelligence in Medicine and Innovation in Clinical Research and Methodology (PhD Program), Department of Clinical and Experimental Sciences, University of Brescia, 25100 Brescia, Italy
| | - Gino Marioni
- Phoniatrics and Audiology Unit, Department of Neuroscience (DNS), University of Padova, 31100 Treviso, Italy
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Ji Z, Fang Z, Dong X, Wang J, Wan X, Yan A. Potential ferroptosis-related diagnostic and prognostic biomarkers in laryngeal cancer. Eur Arch Otorhinolaryngol 2022; 279:5277-5288. [PMID: 35829804 DOI: 10.1007/s00405-022-07433-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2021] [Accepted: 05/01/2022] [Indexed: 11/29/2022]
Abstract
PURPOSE Laryngeal cancer (LC) is a common malignant tumor of the head and neck. However, the relationship between ferroptosis and LC is still unclear. The aim of this study was to identify potential ferroptosis-related biomarkers for diagnosis and prognosis in LC. METHODS We screened differentially expressed genes (DEGs) related to ferroptosis in LC from the TCGA and FerrDb database. DEGs were identified and enrichment by GO/KEGG, GSEA, GSVA analysis. PPI analysis was performed using String and Cytoscape, then hub genes were extracted. Furthermore, ROC analysis, pan-cancer analysis, gene mutation analysis, immune infiltration correlation analysis and clinical correlation analysis of hub genes were performed. RESULTS A total of 59 DEGs were screened, which were more significantly enriched in biological processes and involved in HIF-1 signaling pathway, serotonergic synapse and ferroptosis. A total of 29 significant gene set pathways of LC data were performed by GSEA analysis. The GSVA analysis obtained 53 significant differential gene set pathways. The top 20 genes were identified by PPI. ROC curves revealed four of the top20 genes had a good performance, which were CA9 (AUC = 0.930), MAPK3 (AUC = 0.915), MUC1 (AUC = 0.945), and NOX4 (AUC = 0.933). Subsequent analysis found that CDKN2A has the highest mutation frequency in the top 20 gene, and IFNG had a significant correlation with age, tumor stage, degree of tumor differentiation and lymphatic clearance surgery. CONCLUSION Our study identified key genes closely related to ferroptosis in LC, which still need more studies to explore the mechanisms involved and may become effective clinical diagnostic and prognostic biomarkers.
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Affiliation(s)
- Zao Ji
- Department of Otolaryngology, The First Hospital of China Medical University, Shenyang, 110001, Liaoning, China
| | - Zhiyao Fang
- Department of Critical Care Medicine, The First Affiliated Hospital of Dalian Medical University, Dalian, 116021, China
| | - Xue Dong
- Department of Critical Care Medicine, The First Affiliated Hospital of Dalian Medical University, Dalian, 116021, China
| | - Jia Wang
- Department of Critical Care Medicine, The First Affiliated Hospital of Dalian Medical University, Dalian, 116021, China.
| | - Xianyao Wan
- Department of Critical Care Medicine, The First Affiliated Hospital of Dalian Medical University, Dalian, 116021, China.
| | - Aihui Yan
- Department of Otolaryngology, The First Hospital of China Medical University, Shenyang, 110001, Liaoning, China.
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Understanding metabolic alterations and heterogeneity in cancer progression through validated immunodetection of key molecular components: a case of carbonic anhydrase IX. Cancer Metastasis Rev 2022; 40:1035-1053. [PMID: 35080763 PMCID: PMC8825433 DOI: 10.1007/s10555-021-10011-5] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/25/2021] [Accepted: 12/08/2021] [Indexed: 12/22/2022]
Abstract
Cancer metabolic heterogeneity develops in response to both intrinsic factors (mutations leading to activation of oncogenic pathways) and extrinsic factors (physiological and molecular signals from the extracellular milieu). Here we review causes and consequences of metabolic alterations in cancer cells with focus on hypoxia and acidosis, and with particular attention to carbonic anhydrase IX (CA IX). CA IX is a cancer-associated enzyme induced and activated by hypoxia in a broad range of tumor types, where it participates in pH regulation as well as in molecular mechanisms supporting cancer cells’ invasion and metastasis. CA IX catalyzes reversible conversion of carbon dioxide to bicarbonate ion plus proton and cooperates with a spectrum of molecules transporting ions or metabolites across the plasma membrane. Thereby CA IX contributes to extracellular acidosis as well as to buffering intracellular pH, which is essential for cell survival, metabolic performance, and proliferation of cancer cells. Since CA IX expression pattern reflects gradients of oxygen, pH, and other intratumoral factors, we use it as a paradigm to discuss an impact of antibody quality and research material on investigating metabolic reprogramming of tumor tissue. Based on the validation, we propose the most reliable CA IX-specific antibodies and suggest conditions for faithful immunohistochemical analysis of molecules contributing to heterogeneity in cancer progression.
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Prognostic significance of hypoxia-inducible factor-1α expression in advanced pharyngeal cancer without human papillomavirus infection. The Journal of Laryngology & Otology 2021; 135:625-633. [PMID: 34108057 DOI: 10.1017/s0022215121001468] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
OBJECTIVE This study aimed to clarify the association between both hypoxia-inducible factor-1α and glucose transporter type-1 expression and survival outcome in advanced pharyngeal cancer without human papillomavirus infection. METHOD Twenty-five oropharyngeal and 55 hypopharyngeal cancer patients without human papillomavirus infection were enrolled. All patients had stage III-IV lesions and underwent concurrent chemoradiotherapy or surgery. Hypoxia-inducible factor-1α and glucose transporter type-1 expression were investigated in primary lesions by immunohistochemistry. RESULTS There were 41 and 39 cases with low and high hypoxia-inducible factor-1α expression, and 28 and 52 cases with low and high glucose transporter type-1 expression, respectively. There was no significant correlation between hypoxia-inducible factor-1α and glucose transporter type-1 expression. In univariate analysis, nodal metastasis, clinical stage and high hypoxia-inducible factor-1α expression, but not glucose transporter type-1 expression, predicted significantly worse prognosis. In multivariate analysis, hypoxia-inducible factor-1α overexpression was significantly correlated with poor overall survival, disease-specific survival and recurrence-free survival. CONCLUSION High hypoxia-inducible factor-1α expression was an independent risk factor for poor prognosis for advanced human papillomavirus-unrelated pharyngeal cancer.
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Eskiizmir G, Çalıbaşı Koçal G, Uysal T, Ellidokuz H, Başpınar Y. Serum hypoxia-inducible factor-2: A candidate prognostic biomarker for laryngeal cancer. Clin Otolaryngol 2021; 46:1172-1183. [PMID: 33908192 DOI: 10.1111/coa.13789] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2020] [Revised: 03/16/2021] [Accepted: 04/03/2021] [Indexed: 01/03/2023]
Abstract
OBJECTIVES To determine the serum hypoxia-inducible factor-1, -2 and -3 (HIF-1, -2 and -3) levels in patients with laryngeal neoplasm, and to investigate their role in differential diagnosis, prediction of tumour characteristic and extension, and prognosis and survival. STUDY DESIGN Prospective, cohort study at a tertiary referral centre. SETTINGS The study was conducted in a tertiary medical centre. PARTICIPANTS Patients with benign, premalignant and malignant laryngeal neoplasms were included. Sixty-four patients with a laryngeal neoplasm were enrolled. MAIN OUTCOME MEASURES Serum HIF-1, -2 and -3 levels were measured from blood samples that were drawn before treatment, using ELISA. RESULTS A statistically significant difference between benign (HIF-1, -2, -3:4046,1 pg/mL; 2581,5 pg/mL; 1321,0 pg/mL), premalignant (HIF-1, -2, -3:3630,3 pg/mL; 3229,7 pg/mL; 2549,8 pg/mL) and malignant (HIF-1, -2, -3:3576,7 pg/mL; 2595,8 pg/mL; 1106,3 pg/mL) laryngeal neoplasms was not detected when serum HIF-1, -2 and -3 levels were compared. However, high serum HIF-2 level adversely affected survival and locoregional control and had more than 7-fold increase in hazard ratio. Moreover, serum HIF-2 was an independent prognostic factor for 2-year overall, disease-free, distant metastasis-free survival and locoregional control. CONCLUSION This is the first clinical study in which the diagnostic, predictive and prognostic roles of hypoxia-related biomolecules were examined in laryngeal neoplasms. Hypoxia-inducible factor-2 is a prognostic factor in larynx cancer irrespective of treatment modality.
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Affiliation(s)
- Görkem Eskiizmir
- Department of Otolaryngology-Head Neck Surgery, Manisa Celal Bayar University, Manisa, Turkey
| | | | - Tuğba Uysal
- Institute of Oncology, Dokuz Eylül University, Izmir, Turkey
| | - Hülya Ellidokuz
- Institute of Oncology, Dokuz Eylül University, Izmir, Turkey
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Altuntaş OM, Süslü N, Güler Tezel YG, Tatlı Doğan H, Yılmaz T. Lysyl Oxidase Like-4 (LOXL4) as a tumor marker and prognosticator in advanced stage laryngeal cancer. Braz J Otorhinolaryngol 2021; 88:968-974. [PMID: 33757755 PMCID: PMC9615536 DOI: 10.1016/j.bjorl.2021.02.009] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2020] [Accepted: 02/06/2021] [Indexed: 11/25/2022] Open
Abstract
Introduction Lysyl oxidase-like 4 is an amine oxidase from the lysyl oxidase family that was previously shown to be overexpressed in head and neck cancer and upregulated in response to hypoxia. The possible role of lysyl oxidase-like 4 as a tumor marker in advanced stage larynx cancer was investigated. Objective To investigate the expression of lysyl Oxidase-Like 4 protein in advanced stage laryngeal cancer and elucidate its possible role as a tumor marker, predictor of treatment response and prognosticator. Methods Diagnostic specimens of 72 patients treated for stage III–IV laryngeal squamous cell carcinoma were evaluated for lysyl oxidase-like 4 expression by immunohistochemistry. Results Lysyl oxidase-like 4 expression was correlated with advanced tumor stage (p = 0.041) and better differentiation (p = 0.025) but was independent of tumor diameter (p = 0.456). Response to induction chemotherapy or the need for salvage laryngectomy were not affected by lysyl oxidase-like 4 expression (p = 0.999, p = 0.070 respectively). Increased lysyl oxidase-like 4 expression was associated with better 2 year overall survival in both univariate (p = 0.036) and multivariate analyses (p = 0.014). Conclusion Lysyl oxidase-like 4 expression emerges with advancing stages, is lost with worsening differentiation, and may have tumor suppressive properties in larynx cancer.
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Affiliation(s)
- Ozan Muzaffer Altuntaş
- Koç University, Faculty of Medicine, Department of Otorhinolaryngology, Istanbul, Turkey.
| | - Nilda Süslü
- Hacettepe University, Faculty of Medicine, Department of Otorhinolaryngology, Ankara, Turkey
| | | | | | - Taner Yılmaz
- Hacettepe University, Faculty of Medicine, Department of Otorhinolaryngology, Ankara, Turkey
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Albano D, Dondi F, Paderno A, Nocivelli G, Maddalo M, Magrini SM, Nicolai P, Maroldi R, Giubbini R, Bertagna F. 18F-FDG-PET/CT in laryngeal cancer: Comparison with conventional imaging and prognostic role. Rev Esp Med Nucl Imagen Mol 2021. [PMID: 33642259 DOI: 10.1016/j.remn.2020.06.005] [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: 10/22/2022]
Abstract
OBJECTIVE The aim of this study was to investigate the diagnostic accuracy of staging 18F-FDG-PET/CT in laryngeal cancer, compare these results with conventional imaging (CI) and assess the value of 18F-FDG-PET/CT features to predict survival. METHODS Fifty-four patients with laryngeal squamous cell cancer and baseline 18F-FDG-PET/CT were retrospectively enrolled. The PET images were analyzed visually and semi-quantitatively by measuring several metabolic parameters. A combination of clinical follow-up/imaging follow-up and/or histopathology was taken as reference standard. Progression free survival (PFS) and disease specific survival (DSS) were computed using Kaplan-Meier curves. RESULTS All primary tumors were clearly identified by CI, and 52/54 by 18F-FDG-PET/CT with a sensitivity of 96.3%. Cervical nodal metastases were detected in 40/54 patients at 18F-FDG-PET/CT and in 34/49 patients at CI. Sensitivity, specificity, positive predictive value, negative predictive value, and accuracy on a patient-based analysis for nodal disease were 100%, 85.7%, 94.6%, 100% and 95.9% at 18F-FDG-PET/CT, and 91.4%, 85.7%, 94.1%, 80%, 89.8% at CI. Diagnostic performances of PET/CT and CI were not significantly different on a patient-based, side-by-side and level-by-level analysis. 18F-FDG-PET/CT recognized distant metastases in 7 patients allowing to an upstaging. At a median follow-up of 27 months, relapse/progression of disease occurred in 31 patients and death occurred in 32. Metabolic tumor volume (MTV T), MTV total and total lesion glycolysis (TLG) showed to be independent prognostic factors for PFS. CONCLUSIONS Both CI and PET/CT had good diagnostic performances for the staging of laryngeal cancer; baseline metabolic features (MTV and TLG) showed an important prognostic value in assessing the rate of PFS.
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Affiliation(s)
- D Albano
- Nuclear Medicine, University of Brescia and Spedali Civili Brescia, Brescia, Italia.
| | - F Dondi
- Nuclear Medicine, University of Brescia and Spedali Civili Brescia, Brescia, Italia
| | - A Paderno
- Department of Otorhinolaryngology-Head and Neck Surgery, University of Brescia and Spedali Civili Brescia, Brescia, Italia
| | - G Nocivelli
- Department of Radiology, University of Brescia and Spedali Civili Brescia, Brescia, Italia
| | - M Maddalo
- Department of Radiation Oncology, University of Brescia and Spedali Civili, Brescia, Italia
| | - S M Magrini
- Department of Radiation Oncology, University of Brescia and Spedali Civili, Brescia, Italia
| | - P Nicolai
- Department of Otorhinolaryngology-Head and Neck Surgery, University of Brescia and Spedali Civili Brescia, Brescia, Italia
| | - R Maroldi
- Department of Radiology, University of Brescia and Spedali Civili Brescia, Brescia, Italia
| | - R Giubbini
- Nuclear Medicine, University of Brescia and Spedali Civili Brescia, Brescia, Italia
| | - F Bertagna
- Nuclear Medicine, University of Brescia and Spedali Civili Brescia, Brescia, Italia
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Albano D, Dondi F, Paderno A, Nocivelli G, Maddalo M, Magrini SM, Nicolai P, Maroldi R, Giubbini R, Bertagna F. 18F-FDG-PET/CT in laryngeal cancer: comparison with conventional imaging and prognostic role. Rev Esp Med Nucl Imagen Mol 2020; 40:229-238. [PMID: 34218885 DOI: 10.1016/j.remnie.2020.06.013] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2020] [Accepted: 06/08/2020] [Indexed: 10/23/2022]
Abstract
OBJECTIVE The aim of this study was to investigate the diagnostic accuracy of staging 18 F-FDG-PET/CT in laryngeal cancer, compare these results with conventional imaging (CI) and assess the value of 18 F-FDG-PET/CT features to predict survival. METHODS Fifty-four patients with laryngeal squamous cell cancer and baseline 18 F-FDG-PET/CT were retrospectively enrolled. The PET images were analyzed visually and semi-quantitatively by measuring several metabolic parameters. A combination of clinical follow-up/imaging follow-up and/or histopathology was taken as reference standard. Progression free survival (PFS) and disease specific survival (DSS) were computed using Kaplan-Meier curves. RESULTS All primary tumors were clearly identified by CI, and 52/54 by 18 F-FDG-PET/CT with a sensitivity of 96.3%. Cervical nodal metastases were detected in 40/54 patients at 18 F-FDG-PET/CT and in 34/49 patients at CI. Sensitivity, specificity, positive predictive value, negative predictive value, and accuracy on a patient-based analysis for nodal disease were 100%, 85.7%, 94.6%, 100% and 95.9% at 18 F-FDG-PET/CT, and 91.4%, 85.7%, 94.1%, 80%, 89.8% at CI. Diagnostic performances of PET/CT and CI were not significantly different on a patient-based, side-by-side and level-by-level analysis. 18 F-FDG-PET/CT recognized distant metastases in 7 patients allowing to an upstaging. At a median follow-up of 27 months, relapse/progression of disease occurred in 31 patients and death occurred in 32. Metabolic tumor volume (MTV T), MTV total and total lesion glycolysis (TLG) showed to be independent prognostic factors for PFS. CONCLUSIONS Both CI and PET/CT had good diagnostic performances for the staging of laryngeal cancer; baseline metabolic features (MTV and TLG) showed an important prognostic value in assessing the rate of PFS.
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Affiliation(s)
- Domenico Albano
- Nuclear Medicine, University of Brescia and Spedali Civili Brescia, Brescia, Italy.
| | - Francesco Dondi
- Nuclear Medicine, University of Brescia and Spedali Civili Brescia, Brescia, Italy
| | - Alberto Paderno
- Department of Otorhinolaryngology-Head and Neck Surgery, University of Brescia and Spedali Civili Brescia, Brescia, Italy
| | - Giorgio Nocivelli
- Department of Radiology, University of Brescia and Spedali Civili Brescia, Brescia, Italy
| | - Marta Maddalo
- Department of Radiation Oncology, University of Brescia and Spedali Civili, Brescia, Italy
| | - Stefano Maria Magrini
- Department of Radiation Oncology, University of Brescia and Spedali Civili, Brescia, Italy
| | - Piero Nicolai
- Department of Otorhinolaryngology-Head and Neck Surgery, University of Brescia and Spedali Civili Brescia, Brescia, Italy
| | - Roberto Maroldi
- Department of Radiology, University of Brescia and Spedali Civili Brescia, Brescia, Italy
| | - Raffaele Giubbini
- Nuclear Medicine, University of Brescia and Spedali Civili Brescia, Brescia, Italy
| | - Francesco Bertagna
- Nuclear Medicine, University of Brescia and Spedali Civili Brescia, Brescia, Italy
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Zhong B, Yu R, Du JT, Chen F, Liu YF, Liu SX. Prognostic value of the pretreatment albumin:globulin ratio combined with adult comorbidity evaluation 27 and TMN staging in patients with squamous cell carcinoma of the maxillary sinus. Br J Oral Maxillofac Surg 2019; 58:170-178. [PMID: 31780113 DOI: 10.1016/j.bjoms.2019.11.008] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2018] [Accepted: 11/08/2019] [Indexed: 02/05/2023]
Abstract
The albumin:globulin (A:G) ratio, adult comorbidity evaluation 27 (ACE-27), and TMN staging have been shown to be strong predictive indicators of the survival of patients with many types of tumours. We have investigated the prognostic value of pretreatment based on the A:G ratio combined with TMN staging and ACE-27 in patients with squamous cell carcinoma (SCC) of the maxillary sinus. We studied 196 patients, and the prognostic value was explored by univariate and multivariate Cox's hazards analysis. Multivariate analyses suggested that pretreatment A:G ratio was independently associated with overall survival (hazard ratio (HR) 1.542, 95% CI 1.219 to 1.991, p=0.002); disease-specific survival, (HR 1.499, 95% CI 1.197 to 1.842, p=0.001); and disease-free survival (HR 1.452, 95% CI 1.207 to 1.834, p<0.001). Additional prognostic factors shown in the survival analyses included ACE-27, pathological T stage, and pathological N stage. Pretreatment A:G ratio combined with ACE-27 and TMN staging were powerful prognostic indicators of outcome in patients with SCC of the maxillary sinus, which has potentially important ramifications for stratification of the disease in the future.
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Affiliation(s)
- B Zhong
- Department of Otorhinolaryngology Head & Neck Surgery, West China Hospital, Sichuan University, Chengdu, Sichuan Province, China
| | - R Yu
- Department of Otorhinolaryngology Head & Neck Surgery, West China Hospital, Sichuan University, Chengdu, Sichuan Province, China
| | - J-T Du
- Department of Otorhinolaryngology Head & Neck Surgery, West China Hospital, Sichuan University, Chengdu, Sichuan Province, China
| | - F Chen
- Department of Otorhinolaryngology Head & Neck Surgery, West China Hospital, Sichuan University, Chengdu, Sichuan Province, China.
| | - Y-F Liu
- Department of Otorhinolaryngology Head & Neck Surgery, West China Hospital, Sichuan University, Chengdu, Sichuan Province, China
| | - S-X Liu
- Department of Otorhinolaryngology Head & Neck Surgery, West China Hospital, Sichuan University, Chengdu, Sichuan Province, China.
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Budach V, Tinhofer I. Novel prognostic clinical factors and biomarkers for outcome prediction in head and neck cancer: a systematic review. Lancet Oncol 2019; 20:e313-e326. [DOI: 10.1016/s1470-2045(19)30177-9] [Citation(s) in RCA: 82] [Impact Index Per Article: 16.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2018] [Revised: 02/21/2019] [Accepted: 02/25/2019] [Indexed: 01/16/2023]
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Ni H, Hu S, Chen X, Liu Y, Ni T, Cheng L. Tra2β silencing suppresses cell proliferation in laryngeal squamous cell carcinoma via inhibiting PI3K/AKT signaling. Laryngoscope 2018; 129:E318-E328. [PMID: 30597574 DOI: 10.1002/lary.27716] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 10/26/2018] [Indexed: 01/20/2023]
Affiliation(s)
- Hao‐Sheng Ni
- Department of OtorhinolaryngologyFirst Affiliated Hospital of Nanjing Medical University Nanjing China
- Department of OtorhinolaryngologyAffiliated Hospital of Nantong University Nantong China
| | - Song‐Qun Hu
- Department of OtorhinolaryngologyFirst Affiliated Hospital of Nanjing Medical University Nanjing China
- Department of OtorhinolaryngologyAffiliated Hospital of Nantong University Nantong China
| | - Xi Chen
- Department of OtorhinolaryngologyFirst Affiliated Hospital of Nanjing Medical University Nanjing China
| | - Yi‐Fei Liu
- Department of PathologyAffiliated Hospital of Nantong University Nantong China
| | - Ting‐Ting Ni
- Department of OncologyNantong Tumor Hospital Nantong China
| | - Lei Cheng
- Department of OtorhinolaryngologyFirst Affiliated Hospital of Nanjing Medical University Nanjing China
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13
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Kim JY, Lee SH, An S, Kim SJ, Sung YN, Song KB, Hwang DW, Kim SC, Hong SM. Carbonic anhydrase 9 expression in well-differentiated pancreatic neuroendocrine neoplasms might be associated with aggressive behavior and poor survival. Virchows Arch 2018; 472:739-748. [PMID: 29666945 DOI: 10.1007/s00428-018-2353-x] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2017] [Revised: 01/18/2018] [Accepted: 04/02/2018] [Indexed: 12/26/2022]
Abstract
Well-differentiated pancreatic neuroendocrine neoplasms/tumors (PanNETs) are rare neoplasms with diverse clinical behavior. Biomarker discovery is important for predicting clinical course and prognosis of PanNET patients. Carbonic anhydrase 9 (CA9) and vimentin are hypoxia and epithelial-mesenchymal transition-related proteins of which expression in many carcinomas has been associated with poor prognosis, but their significance in PanNET has yet to be determined. We assessed CA9 and vimentin expression in 164 PanNETs and compared this with clinicopathologic characteristics. CA9 expression was observed in normal islets, while neuroendocrine microadenomas and small (< 1 cm) PanNETs showed loss of CA9 expression. CA9 and vimentin expression was observed in 38 (23%) and 36 (22%) of PanNETs, respectively. CA9 expression was associated with larger size (p = 0.001), higher grade (p < 0.001), higher pT category (p < 0.001), lymph node (p = 0.003) and distant (p = 0.047) metastases, higher AJCC stage (p < 0.001), and lymphovascular (p < 0.001) and perineural (p = 0.002) invasion. PanNET patients with CA9 expression had a shorter recurrence-free survival (5-year survival rate 47%) than those without CA9 expression (76%) by univariate (p = 0.001) but not multivariate analysis. Vimentin expression correlated with CA9 expression (p < 0.001) but not with other clinicopathologic factors. In conclusion, CA9 expression was observed in normal islets, while neuroendocrine microadenomas and small (< 1 cm) PanNETs showed CA9 expression loss. CA9 expression gradually reappeared in larger PanNETs, and this was associated with clinical progression and decreased patient survival by univariate but not multivariate analysis.
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Affiliation(s)
- Joo Young Kim
- Department of Pathology, Nowon Eulji Medical Center, Eulji University, Seoul, South Korea
| | | | - Soyeon An
- Department of Pathology, Incheon St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Incheon, South Korea
| | - Sung Joo Kim
- Department of Pathology, Asan Medical Center, University of Ulsan College of Medicine, 88, Olympic-ro 43-gil, Songpa-gu, Seoul, 05505, South Korea
| | - You-Na Sung
- Department of Pathology, Asan Medical Center, University of Ulsan College of Medicine, 88, Olympic-ro 43-gil, Songpa-gu, Seoul, 05505, South Korea
| | - Ki-Byung Song
- Department of Surgery, Asan Medical Center, University of Ulsan College of Medicine, Seoul, South Korea
| | - Dae Wook Hwang
- Department of Surgery, Asan Medical Center, University of Ulsan College of Medicine, Seoul, South Korea
| | - Song Cheol Kim
- Department of Surgery, Asan Medical Center, University of Ulsan College of Medicine, Seoul, South Korea
| | - Seung-Mo Hong
- Department of Pathology, Asan Medical Center, University of Ulsan College of Medicine, 88, Olympic-ro 43-gil, Songpa-gu, Seoul, 05505, South Korea.
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14
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Dziegielewski PT, Reschly WJ, Morris CG, DeJesus RD, Silver N, Boyce BJ, Santiago I, Amdur RJ, Mendenhall WM. Tumor volume as a predictor of survival in T3 glottic carcinoma: A novel approach to patient selection. Oral Oncol 2018; 79:47-54. [PMID: 29598950 DOI: 10.1016/j.oraloncology.2018.02.015] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2017] [Revised: 02/14/2018] [Accepted: 02/16/2018] [Indexed: 11/28/2022]
Abstract
BACKGROUND The optimal treatment for T3 glottic cancers continues to be debated. Organ preservation has become the standard of care, but not all tumors respond equally. The purpose of this was to investigate the long-term survival outcomes of organ preservation protocols based on tumor volume. METHODS A retrospective review of prospectively collected data from 1966 to 2016 was performed. Patients with T3 vocal cord cancer treated with radiation therapy (RT) at the University of Florida were included. Local control rates as well as survival rates were determined with a Kaplan Meier and Cox regression analysis. Survival was analyzed as a function of tumor volume and an optimal cut point was determined. RESULTS 107/234 patients were included. 79% received RT and 21% chemo-RT. 5-year local control was 61.5% and 5-year disease specific survival was 79.3%. Tumor volume was a significant predictor of survival (p = 0.007). An optimal cut point for tumor volume was 2.5 cc. Patients with tumor volumes ≥2.5 cc had significantly worse (p < 0.05) tumor control rates (100% vs. 70.4%). CONCLUSION Tumor volume is a significant predictor of survival outcomes in T3 vocal cord cancers, but will need external validation. Tumors <2.5 cc have favorable outcomes. Those with higher volume tumors should be counselled appropriately and be considered for primary surgical management.
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Affiliation(s)
- Peter T Dziegielewski
- Department of Otolaryngology, University of Florida, Gainesville, FL, USA; University of Florida Health Cancer Center, Gainesville, FL, USA.
| | - William J Reschly
- Department of Otolaryngology, University of Florida, Gainesville, FL, USA
| | - Chris G Morris
- Department of Radiation Oncology, University of Florida, Gainesville, FL, USA
| | | | - Natalie Silver
- Department of Otolaryngology, University of Florida, Gainesville, FL, USA
| | - Brian J Boyce
- Department of Otolaryngology, University of Florida, Gainesville, FL, USA
| | - Inocente Santiago
- Department of Otolaryngology, University of Florida, Gainesville, FL, USA
| | - Robert J Amdur
- University of Florida Health Cancer Center, Gainesville, FL, USA; Department of Radiation Oncology, University of Florida, Gainesville, FL, USA
| | - William M Mendenhall
- University of Florida Health Cancer Center, Gainesville, FL, USA; Department of Radiation Oncology, University of Florida, Gainesville, FL, USA
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15
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Lo WC, Wu CT, Wang CP, Yang TL, Lou PJ, Ko JY, Chang YL. Lymph Node Ratio Predicts Recurrence and Survival for Patients with Resectable Stage 4 Hypopharyngeal Cancer. Ann Surg Oncol 2017; 24:1707-1713. [PMID: 28130622 DOI: 10.1245/s10434-017-5770-1] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2016] [Indexed: 12/20/2022]
Abstract
BACKGROUND This study aimed to investigate the clinicopathologic prognostic predictors of stage 4 hypopharyngeal cancer and to extend the traditional tumor-node-metastasis classification system to advance its predictive ability. METHODS The study enrolled 120 patients with pathologically stage 4 hypopharyngeal cancer treated with pharyngolaryngectomy and neck dissection between 2001 and 2007. RESULTS The study showed a 5-year overall survival (OS) of 44.6%, a disease-specific survival (DSS) of 51.6%, and a disease-free survival (DFS) of 48% for all the patients. In the multivariate analysis, a lymph node (LN) ratio of 0.113 or higher was a significant poor prognostic factor for OS (hazard ratio [HR] 1.89; 95% confidence interval [CI] 1.17-3.05; p = 0.009), DSS (HR 2.17; 95% CI 1.29-3.64; p = 0.003), and DFS (HR, 2.24; 95% CI 1.12-4.52; p = 0.024) in stage 4 hypopharyngeal cancer. In addition, pretreatment neutrophil-lymphocyte ratio, lymphovascular invasion, and margin status also were predictors of survival outcomes. Furthermore, the study found that disease recurrence differed significantly between the patients with a LN ratio of 0.113 or higher (68.2%) and those with a LN ratio lower than 0.113 (39.5%) (p = 0.002). CONCLUSIONS A LN ratio of 0.113 or higher is a strong predictor of disease recurrence and survival for patients with stage 4 hypopharyngeal cancer.
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Affiliation(s)
- Wu-Chia Lo
- Department and Graduate Institute of Pathology, National Taiwan University College of Medicine, Taipei, 100, Taiwan.,Department of Otolaryngology, Far Eastern Memorial Hospital, Taipei, Taiwan
| | - Chen-Tu Wu
- Department and Graduate Institute of Pathology, National Taiwan University College of Medicine, Taipei, 100, Taiwan.,Department of Pathology, National Taiwan University Hospital and National Taiwan University College of Medicine, Taipei, Taiwan
| | - Cheng-Ping Wang
- Department and Graduate Institute of Pathology, National Taiwan University College of Medicine, Taipei, 100, Taiwan.,Department of Otolaryngology, National Taiwan University Hospital, National Taiwan University College of Medicine, Taipei, Taiwan
| | - Tsung-Lin Yang
- Department of Otolaryngology, National Taiwan University Hospital, National Taiwan University College of Medicine, Taipei, Taiwan
| | - Pei-Jen Lou
- Department of Otolaryngology, National Taiwan University Hospital, National Taiwan University College of Medicine, Taipei, Taiwan
| | - Jeng-Yuh Ko
- Department of Otolaryngology, National Taiwan University Hospital, National Taiwan University College of Medicine, Taipei, Taiwan
| | - Yih-Leong Chang
- Department and Graduate Institute of Pathology, National Taiwan University College of Medicine, Taipei, 100, Taiwan. .,Department of Pathology, National Taiwan University Hospital and National Taiwan University College of Medicine, Taipei, Taiwan.
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16
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Amiri A, Le PU, Moquin A, Machkalyan G, Petrecca K, Gillard JW, Yoganathan N, Maysinger D. Inhibition of carbonic anhydrase IX in glioblastoma multiforme. Eur J Pharm Biopharm 2016; 109:81-92. [PMID: 27702686 DOI: 10.1016/j.ejpb.2016.09.018] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2016] [Revised: 09/06/2016] [Accepted: 09/28/2016] [Indexed: 11/25/2022]
Abstract
Carbonic anhydrase IX (CAIX) is a transmembrane enzyme upregulated in several types of tumors including glioblastoma multiforme (GBM). GBM is among the most aggressive tumors among gliomas. Temozolomide (TMZ) therapy combined with surgical or radiation approaches is the standard treatment but not effective in long term. In this study we tested the treatment with acetazolamide (ATZ), an inhibitor of CAIX, alone or combined with TMZ. The experiments were performed in 2D and 3D cultures (spheroids) using glioblastoma U251N and human brain tumor stem cells (BTSCs). Several proteins implicated in tumor cell death were also investigated. The key results from these studies suggest the following: (1) Cell death of human glioblastoma spheroids and BTSC is significantly increased with combined treatment after 7 days, and (2) the effectiveness of ATZ is significantly enhanced against BTSC and U251N when incorporated into nano-carriers. Collectively, these results point toward the usefulness of nano-delivery of CAIX inhibitors and their combination with chemotherapeutics for glioblastoma treatment.
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Affiliation(s)
- Abdolali Amiri
- Department of Pharmacology and Therapeutics, McGill University, Montreal, Quebec H3G 1Y6, Canada
| | - Phuong Uyen Le
- Department of Neurology and Neurosurgery, Montreal Neurological Institute and Hospital, McGill University, Montreal H3A 2B4, Quebec, Canada
| | - Alexandre Moquin
- Department of Pharmacology and Therapeutics, McGill University, Montreal, Quebec H3G 1Y6, Canada
| | - Gayane Machkalyan
- Department of Pharmacology and Therapeutics, McGill University, Montreal, Quebec H3G 1Y6, Canada
| | - Kevin Petrecca
- Department of Neurology and Neurosurgery, Montreal Neurological Institute and Hospital, McGill University, Montreal H3A 2B4, Quebec, Canada
| | - John W Gillard
- Department of Pharmacology and Therapeutics, McGill University, Montreal, Quebec H3G 1Y6, Canada; Kalgene Pharmaceuticals, Innovation Park at Queens University, Kingston K7L 3N6, Ontario, Canada
| | - Nathan Yoganathan
- Kalgene Pharmaceuticals, Innovation Park at Queens University, Kingston K7L 3N6, Ontario, Canada
| | - Dusica Maysinger
- Department of Pharmacology and Therapeutics, McGill University, Montreal, Quebec H3G 1Y6, Canada.
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17
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van Kuijk SJA, Yaromina A, Houben R, Niemans R, Lambin P, Dubois LJ. Prognostic Significance of Carbonic Anhydrase IX Expression in Cancer Patients: A Meta-Analysis. Front Oncol 2016; 6:69. [PMID: 27066453 PMCID: PMC4810028 DOI: 10.3389/fonc.2016.00069] [Citation(s) in RCA: 100] [Impact Index Per Article: 12.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2015] [Accepted: 03/08/2016] [Indexed: 01/08/2023] Open
Abstract
Hypoxia is a characteristic of many solid tumors and an adverse prognostic factor for treatment outcome. Hypoxia increases the expression of carbonic anhydrase IX (CAIX), an enzyme that is predominantly found on tumor cells and is involved in maintaining the cellular pH balance. Many clinical studies investigated the prognostic value of CAIX expression, but most have been inconclusive, partly due to small numbers of patients included. The present meta-analysis was therefore performed utilizing the results of all clinical studies to determine the prognostic value of CAIX expression in solid tumors. Renal cell carcinoma was excluded from this meta-analysis due to an alternative mechanism of upregulation. 958 papers were identified from a literature search performed in PubMed and Embase. These papers were independently evaluated by two reviewers and 147 studies were included in the analysis. The meta-analysis revealed strong significant associations between CAIX expression and all endpoints: overall survival [hazard ratio (HR) = 1.76, 95% confidence interval (95%CI) 1.58–1.98], disease-free survival (HR = 1.87, 95%CI 1.62–2.16), locoregional control (HR = 1.54, 95%CI 1.22–1.93), disease-specific survival (HR = 1.78, 95%CI 1.41–2.25), metastasis-free survival (HR = 1.82, 95%CI 1.33–2.50), and progression-free survival (HR = 1.58, 95%CI 1.27–1.96). Subgroup analyses revealed similar associations in the majority of tumor sites and types. In conclusion, these results show that patients having tumors with high CAIX expression have higher risk of locoregional failure, disease progression, and higher risk to develop metastases, independent of tumor type or site. The results of this meta-analysis further support the development of a clinical test to determine patient prognosis based on CAIX expression and may have important implications for the development of new treatment strategies.
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Affiliation(s)
- Simon J A van Kuijk
- Department of Radiation Oncology (MAASTRO Lab), GROW - School for Oncology and Developmental Biology, Maastricht University Medical Centre , Maastricht , Netherlands
| | - Ala Yaromina
- Department of Radiation Oncology (MAASTRO Lab), GROW - School for Oncology and Developmental Biology, Maastricht University Medical Centre , Maastricht , Netherlands
| | - Ruud Houben
- Department of Radiation Oncology, MAASTRO Clinic , Maastricht , Netherlands
| | - Raymon Niemans
- Department of Radiation Oncology (MAASTRO Lab), GROW - School for Oncology and Developmental Biology, Maastricht University Medical Centre , Maastricht , Netherlands
| | - Philippe Lambin
- Department of Radiation Oncology (MAASTRO Lab), GROW - School for Oncology and Developmental Biology, Maastricht University Medical Centre , Maastricht , Netherlands
| | - Ludwig J Dubois
- Department of Radiation Oncology (MAASTRO Lab), GROW - School for Oncology and Developmental Biology, Maastricht University Medical Centre , Maastricht , Netherlands
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18
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Timmermans AJ, Lange CAH, de Bois JA, van Werkhoven E, Hamming-Vrieze O, Hilgers FJM, van den Brekel MWM. Tumor volume as a prognostic factor for local control and overall survival in advanced larynx cancer. Laryngoscope 2015; 126:E60-7. [DOI: 10.1002/lary.25567] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2015] [Revised: 07/02/2015] [Accepted: 07/20/2015] [Indexed: 11/05/2022]
Affiliation(s)
- Adriana J. Timmermans
- Department of Head and Neck Oncology and Surgery; Netherlands Cancer Institute; Amsterdam the Netherlands
| | | | - Josien A. de Bois
- Department of Radiation Oncology; Netherlands Cancer Institute; Amsterdam the Netherlands
| | - Erik van Werkhoven
- Biometrics Department; Netherlands Cancer Institute; Amsterdam the Netherlands
| | - Olga Hamming-Vrieze
- Department of Radiation Oncology; Netherlands Cancer Institute; Amsterdam the Netherlands
| | - Frans J. M. Hilgers
- Department of Head and Neck Oncology and Surgery; Netherlands Cancer Institute; Amsterdam the Netherlands
- Institute of Phonetic Sciences/Amsterdam Center for Language and Communication, University of Amsterdam; Amsterdam the Netherlands
| | - Michiel W. M. van den Brekel
- Department of Head and Neck Oncology and Surgery; Netherlands Cancer Institute; Amsterdam the Netherlands
- Institute of Phonetic Sciences/Amsterdam Center for Language and Communication, University of Amsterdam; Amsterdam the Netherlands
- Department of Oral and Maxillofacial Surgery; Academic Medical Center; Amsterdam the Netherlands
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