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Martín-Lozano G, Gómez-Díaz R, Iglesías-Martín F, Torres-Lagares D, Gutiérrez-Corrales A, Gutiérrez-Pérez JL. Mutations in p53 Gene Exons in a Sample from the South of Spain in Oral Cancer. J Clin Exp Dent 2021; 13:e1001-e1005. [PMID: 34667495 PMCID: PMC8501864 DOI: 10.4317/jced.58799] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2021] [Accepted: 08/24/2021] [Indexed: 11/18/2022] Open
Abstract
Background Cancer is a genetic disease caused by mutations in DNA and epigenetic alterations that control gene expression. The majority of epidermoid carcinomas develop within the fields of epithelial genetic alterations. The mechanisms underlying tumorigenesis of epidermoid carcinoma are as yet unknown; therefore, precise identification of the risk factors is needed. Aim: The main aim of this study is to analyse and identify the emergence of the mutations described in the literature of the p53 gene with regard to the emergence of cancer in a sample of dysplastic and cancerous lesions in oral cavity mucosa in the population of the south of Spain, in order to determine the presence of said mutations and the percentage of them in our population.
Material and Methods A cross-sectional study was carried out, with a sample size of 22 patients with potentially malignant oral lesions ancillary to biopsy. All were patients, of both sexes, over 18 years of age from the Virgen del Rocío University Hospital with potentially malignant lesions in oral mucosa ancillary to biopsy (leukoplakias, erythroplasias or leukoerythopkias). An anatomopathological study was performed on all the samples and the lesions were divided into three types: low-grade dysplasia, high-grade dysplasia and squamous cell carcinoma. In respect of the genome study process, a complete search or scan for mutations in exons 5, 6, 8 and 9 of the p 53 gene was carried out, given that in the IARC database we observed that the 5 and 6 as well as the 8 and 9 exon sizes can be scanned completely in this way, since they have amplificon sizes of 476 and 445 base pairs respectively.
Results In the scan for the complete exons 5, 6, 8 and 9 only a single result of interest was found to be described. In patient NBI 57 a change was observed in the TAT triplet by ATT of EXON 6, the change being of the T nucleotide by the A and in both directions both in Forward and Reverse. The exact location in the NCBI is GR Ch 37 p13 on chromosome 17, EXON 6 of the P53 gene and the change is in the C.613 T>A nucleotide; NM_000546.
Conclusions On reviewing this genetic variant in different scientific databases, such as ENSEMBL among others, in at least 6 different biocomputing tools it is described as a pathogen, therefore we can conclude that it is a pathogenic mutation for this case in particular. The rest of the mutations described in the literature on exons 5, 6, 8 and 9 of the p53 gene have not been found in our sample. Key words:Oral cancer, p53, Mutations, Exon.
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Affiliation(s)
- Guiomar Martín-Lozano
- Oral and Maxillofacial Surgery Unit, Virgen del Rocío University Hospital, Seville, Spain
| | | | | | - Daniel Torres-Lagares
- Full Professor of Oral Surgery at Dental School. University of Sevilla, Seville, Spain
| | | | - José-Luis Gutiérrez-Pérez
- Oral and Maxillofacial Unit, Virgen del Rocio Hospital, Seville, Spain. Oral Surgery Department, Dentistry Faculty, University of Seville, Seville, Spain
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2
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Yilmaz E, Gan GN, Schroeder TM, Cowan A, Joste N. Role of molecular signature to differentiate second primary lung cancer from metastasis in a patient with squamous cell carcinoma of oral cavity. Cancer Rep (Hoboken) 2021; 4:e1363. [PMID: 34161676 PMCID: PMC8388157 DOI: 10.1002/cnr2.1363] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2020] [Revised: 01/31/2021] [Accepted: 02/22/2021] [Indexed: 12/27/2022] Open
Abstract
Background Lung is the most common site of distant metastasis for patients with head and neck squamous cell carcinoma (HNSCC). However, differentiating second primary lung cancers from metastasis may be difficult for p16 negative HNSCC. Case We describe a case of oral cavity squamous cell carcinoma (SCC) who was found to have lung nodule and hilar lymphadenopathy (LAD) after surgery and radiation therapy. Hilar node was consistent with SCC however, it was difficult to differentiate second primary lung cancer and metastasis from oral cavity SCC. Next‐generation sequencing was done for the primary oral cavity and the hilar node. Both samples had the same type of TP53 mutation and variants of unknown significance suggesting metastatic HNSCC. He was treated with a chemotherapy regimen for metastatic HNSCC. Conclusion Molecular studies can help to differentiate metastasis from second primary lung cancers for p16 negative HNSCC.
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Affiliation(s)
- Emrullah Yilmaz
- Department of Hematology and Medical Oncology, Cleveland Clinic, Cleveland, Ohio, USA
| | - Gregory N Gan
- Department of Radiation Oncology, University of Kansas Medical Center, Kansas City, Kansas, USA
| | - Thomas M Schroeder
- University of New Mexico Comprehensive Cancer Center, University of New Mexico, Albuquerque, New Mexico, USA
| | - Andrew Cowan
- University of New Mexico Comprehensive Cancer Center, University of New Mexico, Albuquerque, New Mexico, USA
| | - Nancy Joste
- Department of Pathology, University of New Mexico, Albuquerque, New Mexico, USA
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3
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Stepan KO, Li MM, Kang SY, Puram SV. Molecular margins in head and neck cancer: Current techniques and future directions. Oral Oncol 2020; 110:104893. [PMID: 32702629 DOI: 10.1016/j.oraloncology.2020.104893] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2020] [Accepted: 07/01/2020] [Indexed: 12/14/2022]
Abstract
Complete tumor extirpation with clear surgical margins remains a central tenet of oncologic head and neck surgery. Rates of locoregional recurrence and survival are both significantly worse when clear margins are unable to be obtained. Current clinical practice relies on the use of frozen sections intra-operatively, followed by traditional histopathologic analysis post-operatively to assess the surgical margin. However, with improved understanding of tumor biology and advances in technology, new techniques have emerged to analyze margins at a molecular level. Such molecular margin analysis interrogates tissue for genetic, epigenetic, or proteomic changes that may belie tumor presence or aggressive features not captured by standard histopathologic techniques. Intra-operatively, this information may be used to guide resection, while post-operatively, it may help to stratify patients for adjuvant treatment. In this review, we summarize the current state of molecular margin analysis and describe directions for future research.
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Affiliation(s)
- Katelyn O Stepan
- Department of Otolaryngology - Head and Neck Surgery, Washington University School of Medicine, 4921 Parkview Pl, St. Louis, MO 63110, USA
| | - Michael M Li
- Department of Otolaryngology - Head and Neck Surgery, Ohio State University Wexner Medical Center, 410 W. 10(th) Ave, Columbus, OH, USA
| | - Stephen Y Kang
- Department of Otolaryngology - Head and Neck Surgery, Ohio State University Wexner Medical Center, 410 W. 10(th) Ave, Columbus, OH, USA
| | - Sidharth V Puram
- Department of Otolaryngology - Head and Neck Surgery, Washington University School of Medicine, 4921 Parkview Pl, St. Louis, MO 63110, USA; Department of Genetics, Washington University School of Medicine, 4921 Parkview Pl, St. Louis, MO 63110, USA.
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4
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Bohnenberger H, Kaderali L, Ströbel P, Yepes D, Plessmann U, Dharia NV, Yao S, Heydt C, Merkelbach-Bruse S, Emmert A, Hoffmann J, Bodemeyer J, Reuter-Jessen K, Lois AM, Dröge LH, Baumeister P, Walz C, Biggemann L, Walter R, Häupl B, Comoglio F, Pan KT, Scheich S, Lenz C, Küffer S, Bremmer F, Kitz J, Sitte M, Beißbarth T, Hinterthaner M, Sebastian M, Lotz J, Schildhaus HU, Wolff H, Danner BC, Brandts C, Büttner R, Canis M, Stegmaier K, Serve H, Urlaub H, Oellerich T. Comparative proteomics reveals a diagnostic signature for pulmonary head-and-neck cancer metastasis. EMBO Mol Med 2019; 10:emmm.201708428. [PMID: 30097507 PMCID: PMC6127892 DOI: 10.15252/emmm.201708428] [Citation(s) in RCA: 34] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022] Open
Abstract
Patients with head‐and‐neck cancer can develop both lung metastasis and primary lung cancer during the course of their disease. Despite the clinical importance of discrimination, reliable diagnostic biomarkers are still lacking. Here, we have characterised a cohort of squamous cell lung (SQCLC) and head‐and‐neck (HNSCC) carcinomas by quantitative proteomics. In a training cohort, we quantified 4,957 proteins in 44 SQCLC and 30 HNSCC tumours. A total of 518 proteins were found to be differentially expressed between SQCLC and HNSCC, and some of these were identified as genetic dependencies in either of the two tumour types. Using supervised machine learning, we inferred a proteomic signature for the classification of squamous cell carcinomas as either SQCLC or HNSCC, with diagnostic accuracies of 90.5% and 86.8% in cross‐ and independent validations, respectively. Furthermore, application of this signature to a cohort of pulmonary squamous cell carcinomas of unknown origin leads to a significant prognostic separation. This study not only provides a diagnostic proteomic signature for classification of secondary lung tumours in HNSCC patients, but also represents a proteomic resource for HNSCC and SQCLC.
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Affiliation(s)
| | - Lars Kaderali
- Institute of Bioinformatics, University Medicine Greifswald, Greifswald, Germany
| | - Philipp Ströbel
- Institute of Pathology, University Medical Center, Göttingen, Germany
| | - Diego Yepes
- Department of Medicine II, Hematology/Oncology, Goethe University, Frankfurt, Germany.,German Cancer Research Center, German Cancer Consortium, Heidelberg, Germany
| | - Uwe Plessmann
- Bioanalytical Mass Spectrometry Group, Max Planck Institute for Biophysical Chemistry, Göttingen, Germany
| | - Neekesh V Dharia
- Department of Pediatric Oncology, Dana-Farber Cancer Institute, Boston, MA, USA.,Division of Pediatric Hematology/Oncology, Boston Childrens Hospital, Boston, MA, USA.,The Broad Institute, Cambridge, MA, USA
| | - Sha Yao
- Institute of Pathology, University Medical Center, Göttingen, Germany
| | - Carina Heydt
- Institute of Pathology, University Hospital Cologne, University of Cologne, Köln, Germany
| | | | - Alexander Emmert
- Department of Thoracic and Cardiovascular Surgery, University Medical Center, Göttingen, Germany
| | - Jonatan Hoffmann
- Institute of Pathology, University Medical Center, Göttingen, Germany
| | - Julius Bodemeyer
- Institute of Pathology, University Medical Center, Göttingen, Germany
| | | | - Anna-Maria Lois
- Institute of Pathology, University Medical Center, Göttingen, Germany
| | - Leif Hendrik Dröge
- Department of Radiooncology, University Medical Center, Göttingen, Germany
| | - Philipp Baumeister
- Department of Otorhinolaryngology, University Hospital Munich, Ludwig-Maximilian-University München, München, Germany
| | - Christoph Walz
- Institute of Pathology, Faculty of Medicine, LMU Munich, Munich, Germany
| | - Lorenz Biggemann
- Institute for Diagnostic and Interventional Radiology, University Medical Center, Göttingen, Germany
| | - Roland Walter
- Department of Medicine II, Hematology/Oncology, Goethe University, Frankfurt, Germany
| | - Björn Häupl
- Department of Medicine II, Hematology/Oncology, Goethe University, Frankfurt, Germany.,German Cancer Research Center, German Cancer Consortium, Heidelberg, Germany
| | - Federico Comoglio
- Department of Haematology, University of Cambridge, Cambridge, UK.,Cambridge Institute for Medical Research, Wellcome Trust/MRC Stem Cell Institute, Cambridge, UK
| | - Kuan-Ting Pan
- Bioanalytical Mass Spectrometry Group, Max Planck Institute for Biophysical Chemistry, Göttingen, Germany
| | - Sebastian Scheich
- Department of Medicine II, Hematology/Oncology, Goethe University, Frankfurt, Germany
| | - Christof Lenz
- Bioanalytical Mass Spectrometry Group, Max Planck Institute for Biophysical Chemistry, Göttingen, Germany.,Bioanalytics, University Medical Center, Göttingen, Germany
| | - Stefan Küffer
- Institute of Pathology, University Medical Center, Göttingen, Germany
| | - Felix Bremmer
- Institute of Pathology, University Medical Center, Göttingen, Germany
| | - Julia Kitz
- Institute of Pathology, University Medical Center, Göttingen, Germany
| | - Maren Sitte
- Institute of Medical Statistics, University Medical Center, Göttingen, Germany
| | - Tim Beißbarth
- Institute of Medical Statistics, University Medical Center, Göttingen, Germany
| | - Marc Hinterthaner
- Department of Thoracic and Cardiovascular Surgery, University Medical Center, Göttingen, Germany
| | - Martin Sebastian
- Department of Medicine II, Hematology/Oncology, Goethe University, Frankfurt, Germany
| | - Joachim Lotz
- Institute for Diagnostic and Interventional Radiology, University Medical Center, Göttingen, Germany.,German Cardiovascular Research Center, Deutsches Zentrum für Herz-Kreislaufforschung (DZHK), Partnersite Göttingen, Germany
| | | | - Hendrik Wolff
- University Medical Center, Göttingen, Germany.,Department of Radiooncology, University Medical Center, Regensburg, Germany
| | - Bernhard C Danner
- Department of Thoracic and Cardiovascular Surgery, University Medical Center, Göttingen, Germany
| | - Christian Brandts
- Department of Medicine II, Hematology/Oncology, Goethe University, Frankfurt, Germany.,German Cancer Research Center, German Cancer Consortium, Heidelberg, Germany
| | - Reinhard Büttner
- Institute of Pathology, University Hospital Cologne, University of Cologne, Köln, Germany
| | - Martin Canis
- Department of Otorhinolaryngology, University Hospital Munich, Ludwig-Maximilian-University München, München, Germany
| | - Kimberly Stegmaier
- Department of Pediatric Oncology, Dana-Farber Cancer Institute, Boston, MA, USA.,Division of Pediatric Hematology/Oncology, Boston Childrens Hospital, Boston, MA, USA.,The Broad Institute, Cambridge, MA, USA
| | - Hubert Serve
- Department of Medicine II, Hematology/Oncology, Goethe University, Frankfurt, Germany.,German Cancer Research Center, German Cancer Consortium, Heidelberg, Germany
| | - Henning Urlaub
- Bioanalytical Mass Spectrometry Group, Max Planck Institute for Biophysical Chemistry, Göttingen, Germany.,Institute for Diagnostic and Interventional Radiology, University Medical Center, Göttingen, Germany
| | - Thomas Oellerich
- Department of Medicine II, Hematology/Oncology, Goethe University, Frankfurt, Germany .,German Cancer Research Center, German Cancer Consortium, Heidelberg, Germany
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5
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Daher T, Tur MK, Brobeil A, Etschmann B, Witte B, Engenhart-Cabillic R, Krombach G, Blau W, Grimminger F, Seeger W, Klussmann JP, Bräuninger A, Gattenlöhner S. Combined human papillomavirus typing and TP53 mutation analysis in distinguishing second primary tumors from lung metastases in patients with head and neck squamous cell carcinoma. Head Neck 2018. [PMID: 29522268 DOI: 10.1002/hed.25041] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023] Open
Abstract
BACKGROUND In head and neck squamous cell carcinoma (HNSCC), the occurrence of concurrent lung malignancies poses a significant diagnostic challenge because metastatic HNSCC is difficult to discern from second primary lung squamous cell carcinoma (SCC). However, this differentiation is crucial because the recommended treatments for metastatic HNSCC and second primary lung SCC differ profoundly. METHODS We analyzed the origin of lung tumors in 32 patients with HNSCC using human papillomavirus (HPV) typing and targeted next generation sequencing of all coding exons of tumor protein 53 (TP53). RESULTS Lung tumors were clearly identified as HNSCC metastases or second primary tumors in 29 patients, thus revealing that 16 patients had received incorrect diagnoses based on clinical and morphological data alone. CONCLUSION The HPV typing and mutation analysis of all TP53 coding exons is a valuable diagnostic tool in patients with HNSCC and concurrent lung SCC, which can help to ensure that patients receive the most suitable treatment.
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Affiliation(s)
- Tamas Daher
- Institute of Pathology, University Hospital Giessen, Justus-Liebig-University Giessen, Giessen, Germany
| | - Mehmet Kemal Tur
- Institute of Pathology, University Hospital Giessen, Justus-Liebig-University Giessen, Giessen, Germany
| | - Alexander Brobeil
- Institute of Pathology, University Hospital Giessen, Justus-Liebig-University Giessen, Giessen, Germany
| | - Benjamin Etschmann
- Institute of Pathology, University Hospital Giessen, Justus-Liebig-University Giessen, Giessen, Germany
| | - Biruta Witte
- Department of General and Thoracic Surgery, University Hospital Giessen, Giessen, Germany
| | | | - Gabriele Krombach
- Department of Diagnostic and Interventional Radiology, University Hospital Giessen, Justus-Liebig-University Giessen, Giessen, Germany
| | - Wolfgang Blau
- Department of Internal Medicine V, University Hospital Giessen, Giessen, Germany
| | - Friedrich Grimminger
- Department of Internal Medicine V, University Hospital Giessen, Giessen, Germany
| | - Werner Seeger
- Universities of Giessen and Marburg Lung Center (UGMLC), Member of the German Center for Lung Research (DZL), Giessen, Germany
| | - Jens Peter Klussmann
- Department of Otorhinolaryngology, Head and Neck Surgery, University Hospital Giessen, Justus-Liebig-University Giessen, Giessen, Germany
| | - Andreas Bräuninger
- Institute of Pathology, University Hospital Giessen, Justus-Liebig-University Giessen, Giessen, Germany
| | - Stefan Gattenlöhner
- Institute of Pathology, University Hospital Giessen, Justus-Liebig-University Giessen, Giessen, Germany
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6
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Abstract
OBJECTIVES To evaluate the influence of IGFBP-3 methylation on recurrence in patients with stage II colorectal cancer (CRC) from 2 independent cohorts. BACKGROUND The relationship between IGFBP-3 methylation in primary tumors (PTs) or lymph nodes (LNs) and risk of recurrence in patients with stage II CRC treated with surgery alone is unknown. METHODS IGFBP-3 methylation of DNA from 115 PTs and 1641 LNs in patients with stage II CRC from 2 independent cohorts was analyzed. Forty patients developed recurrence, whereas 75 matched patients remained recurrence free for more than 2 years after surgery. Cox proportional hazard models were used to calculate hazard ratios (HRs) of recurrence, adjusted for patient and tumor characteristics. RESULTS Methylation of IGFBP-3 in PTs was identified to be significantly associated with risk of recurrence in the training set. The signature was tested in a validation set and classified 40.7% of patients as high risk. Five-year recurrence-free survival rates were 76.4% and 58.3% for low- and high-risk patients, respectively, with an HR of 2.21 (95% confidence interval, 1.04-4.68; P = 0.039). In multivariate analysis, the signature remained the most significant prognostic factor, with an HR of 2.40 (95% confidence interval, 1.10-5.25; P = 0.029). A combined analysis of 1641 LNs from the 2 sets identified IGFBP-3 methylation in LNs was not associated with risk of recurrence. CONCLUSIONS Detection of IGFBP-3 methylation in PTs, but not in LNs, provides a powerful tool for the identification of patients with stage II CRC at high risk of recurrence.
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7
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Torezan LAR, Festa-Neto C. Cutaneous field cancerization: clinical, histopathological and therapeutic aspects. An Bras Dermatol 2014; 88:775-86. [PMID: 24173184 PMCID: PMC3798355 DOI: 10.1590/abd1806-4841.20132300] [Citation(s) in RCA: 49] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2012] [Accepted: 12/20/2012] [Indexed: 12/21/2022] Open
Abstract
The concept of "field cancerization" was first introduced by Slaughter in 1953 when
studying the presence of histologically abnormal tissue surrounding oral squamous
cell carcinoma. It was proposed to explain the development of multiple primary tumors
and locally recurrent cancer. Organ systems in which field cancerization has been
described since then are: head and neck (oral cavity, oropharynx, and larynx), lung,
vulva, esophagus, cervix, breast, skin, colon, and bladder. Recent molecular studies
support the carcinogenesis model in which the development of a field with genetically
altered cells plays a central role. An important clinical implication is that fields
often remain after the surgery for the primary tumor and may lead to new cancers,
designated presently as "a second primary tumor" or "local recurrence," depending on
the exact site and time interval. In conclusion, the development of an expanding
pre-neoplastic field appears to be a critical step in epithelial carcinogenesis with
important clinical consequences. Diagnosis and treatment of epithelial cancers should
not only be focused on the tumor but also on the field from which it developed. The
most important etiopathogenetic, clinical, histopathological and therapeutic aspects
of field cancerization are reviewed in this article.
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8
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Gao D, Li S. Biological resonance for cancer metastasis, a new hypothesis based on comparisons between primary cancers and metastases. CANCER MICROENVIRONMENT : OFFICIAL JOURNAL OF THE INTERNATIONAL CANCER MICROENVIRONMENT SOCIETY 2013; 6:213-30. [PMID: 24214411 PMCID: PMC3855372 DOI: 10.1007/s12307-013-0138-y] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/09/2013] [Accepted: 10/22/2013] [Indexed: 12/11/2022]
Abstract
Many hypotheses have been proposed to try to explain cancer metastasis. However, they seem to be contradictory and have some limitations. Comparisons of primary tumors and matched metastases provide new insight into metastasis. The results show high concordances and minor differences at multiple scales from organic level to molecular level. The concordances reflect the commonality between primary cancer and metastasis, and also mean that metastatic cancer cells derived from primary cancer are quite conservative in distant sites. The differences reflect variation that cancer cells must acquire new traits to adapt to foreign milieu during the course of evolving into a new tumor in second organs. These comparisons also provided new information on understanding mechanism of vascular metastasis, organ-specific metastasis, and tumor dormancy. The collective results suggest a new hypothesis, biological resonance (bio-resonance) model. The hypothesis has two aspects. One is that primary cancer and matched metastasis have a common progenitor. The other is that both ancestors of primary cancer cells and metastatic cancer cells are under similar microenvironments and receive similar or same signals. When their interactions reach a status similar to primary cancer, metastasis will occur. Compared with previous hypotheses, the bio-resonance hypothesis seems to be more applicable for cancer metastasis to explain how, when and where metastasis occurs. Thus, it has important implications for individual prediction, prevention and treatment of cancer metastasis.
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Affiliation(s)
- Dongwei Gao
- 536 Hospital of PLA, 29# Xiadu street, Xining, 810007, Qinghai Province, People's Republic of China,
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9
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Molecular screening of oral precancer. Oral Oncol 2013; 49:1129-35. [DOI: 10.1016/j.oraloncology.2013.09.005] [Citation(s) in RCA: 46] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2013] [Revised: 09/02/2013] [Accepted: 09/07/2013] [Indexed: 01/28/2023]
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10
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Braakhuis BJM, Rietbergen MM, Buijze M, Snijders PJF, Bloemena E, Brakenhoff RH, Leemans CR. TP53 mutation and human papilloma virus status of oral squamous cell carcinomas in young adult patients. Oral Dis 2013; 20:602-8. [PMID: 24112103 DOI: 10.1111/odi.12178] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2013] [Revised: 07/15/2013] [Accepted: 07/21/2013] [Indexed: 12/12/2022]
Abstract
OBJECTIVE Little is known about the molecular carcinogenesis of oral squamous cell carcinoma (OSCC) in young adult patients. The aim of this study was to investigate the detailed TP53 mutation and human papilloma virus (HPV) status of OSCC in patients, younger than 45 years. METHODS TP53 mutations were determined with direct sequencing on paraffin-embedded carcinoma tissue from 31 young patients and compared with two older age OSCC reference groups: one from the same institute (N = 87) and an independent one (N = 675). Biologically active tumour HPV was detected by p16-immunohistochemistry followed by a HPV-DNA GP5 + /6 + -PCR. RESULTS HPV16 was present in one OSCC (3%). TP53 mutations were found in 14 (45%) OSCC: five were missense and nine resulted in a truncated protein. Six of these latter were insertions or deletions of one or more nucleotides leading to frameshift, one was at a splice site and two resulted in a stop codon. The percentage of truncating mutations (64% of all mutations) was higher than that observed in the institute's reference group (44%, P = 0.23) and in the independent reference group (24%, P = 0.002). CONCLUSIONS This study shows that TP53 mutations are common in OSCC of young adult patients; infection with biologically active HPV is rare.
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Affiliation(s)
- B J M Braakhuis
- Department of Otolaryngology/Head-Neck Surgery, VU University Medical Center, Amsterdam, The Netherlands
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11
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van Zeeburg HJ, Graveland AP, Brink A, Nguyen M, Leemans CR, Bloemena E, Braakhuis BJ, Brakenhoff RH. Generation of precursor cell lines from preneoplastic fields surrounding head and neck cancers. Head Neck 2012; 35:568-74. [DOI: 10.1002/hed.23004] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2012] [Indexed: 11/06/2022] Open
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12
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Gonzalez-Moles MA, Scully C, Ruiz-Avila I. Molecular findings in oral premalignant fields: update on their diagnostic and clinical implications. Oral Dis 2011; 18:40-7. [DOI: 10.1111/j.1601-0825.2011.01845.x] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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13
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Hunter K, Parkinson EK, Thakker N. An overview of the molecular pathology of head and neck cancer, and its clinical implications. Periodontol 2000 2011; 57:132-49. [DOI: 10.1111/j.1600-0757.2011.00387.x] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
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14
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Graveland AP, Golusinski PJ, Buijze M, Douma R, Sons N, Kuik DJ, Bloemena E, Leemans CR, Brakenhoff RH, Braakhuis BJM. Loss of heterozygosity at 9p and p53 immunopositivity in surgical margins predict local relapse in head and neck squamous cell carcinoma. Int J Cancer 2011; 128:1852-9. [PMID: 20568113 DOI: 10.1002/ijc.25523] [Citation(s) in RCA: 36] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
A major problem in head and neck cancer surgery is the high rate of local relapse (LR). In at least 25% of the surgically treated head and neck squamous cell carcinoma (HNSCC) patients, a genetically defined preneoplastic lesion, also known as "field," can be detected in the surgical margins. A remaining field may be an important cause for the development of LR. The aims of our study are (i) to investigate whether HNSCC patients with an unresected field are more likely to develop LR, and (ii) to identify molecular risk factors that predict malignant transformation of field. We retrospectively studied 35 HNSCC patients of whom 16 patients developed LR and 19 patients remained disease-free for at least 4 years. Loss of heterozygosity (LOH) at chromosomes 3p, 9p and 17p, p53 immunostaining, Ki-67 immunostaining and histopathological grading of all available paraffin-embedded surgical margins was performed, and related to LR. Significant associations were determined by Kaplan-Meier analysis and Cox-proportional hazard models. We show that presence of field is significantly associated with LR and that LOH at 9p and p53 immunostaining have the most predictive potential (hazard ratios 3.17 and 3.46, and p values 0.027 and 0.017, respectively). The combination of LOH at 9p and/or a large p53 positive field is most predictive (hazard ratio 7.06 and p = 0.01). Presence and grade of dysplasia was not associated with LR. These data may have major impact for future diagnostic workup of surgically treated HNSCC patients.
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Affiliation(s)
- A Peggy Graveland
- Department of Otolaryngology, VU University Medical Center, Amsterdam, The Netherlands
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15
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Lindenbergh-van der Plas M, Brakenhoff RH, Kuik DJ, Buijze M, Bloemena E, Snijders PJF, Leemans CR, Braakhuis BJM. Prognostic significance of truncating TP53 mutations in head and neck squamous cell carcinoma. Clin Cancer Res 2011; 17:3733-41. [PMID: 21467160 DOI: 10.1158/1078-0432.ccr-11-0183] [Citation(s) in RCA: 79] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
PURPOSE TP53 is a key gene in cellular homeostasis and is frequently mutated in head and neck squamous cell carcinoma (HNSCC). There is a variety of TP53 mutations, each with its own biological and clinical implication. Aim of the study was to assess the prognostic significance of TP53 mutations in HNSCCs and to identify the most relevant mutation. EXPERIMENTAL DESIGN TP53 mutation status was investigated in 141 consecutive HNSCCs treated by surgery with radiotherapy when indicated and with a known human papilloma virus status. The type of mutation was correlated with overall and progression-free survival in a multivariate two-sided Cox regression analysis with wild type as reference. RESULTS A TP53 mutation was found in 88 (62.4%) of the carcinomas and was not significantly associated with overall survival (HR = 1.65, P = 0.11). Patients with a mutation resulting in a truncated protein (n = 36, 25.5%) had a significantly worse overall survival (HR = 2.54, P = 0.008) and progression-free survival (HR = 2.65, P = 0.002). Four of these mutations were at a splice site, 13 were nonsense mutations (produces stop codon), and 19 were insertions or deletions resulting in a frameshift. After multivariate analysis, a truncating mutation remained a significant prognosticator. A missense (i.e., nontruncating) mutation did not influence prognosis. Other ways of classification (disruptive vs. nondisruptive, hotspot vs. nonhotspot, and DNA binding vs. non-DNA binding) were less discriminative. CONCLUSION In HNSCCs, a truncating TP53 mutation is associated with a poor prognosis. This patient group seems as a target population for adjuvant therapy with chemoradiation or viral vector-mediated TP53 gene transfer.
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Affiliation(s)
- Marlon Lindenbergh-van der Plas
- Departments of Otolaryngology/Head-Neck Surgery, Epidemiology and Biostatistics, and Pathology, VU University Medical Center, Amsterdam, the Netherlands
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Kang S, Kim MJ, An H, Kim BG, Choi YP, Kang KS, Gao MQ, Park H, Na HJ, Kim HK, Yun HR, Kim DS, Cho NH. Proteomic Molecular Portrait of Interface Zone in Breast Cancer. J Proteome Res 2010; 9:5638-45. [DOI: 10.1021/pr1004532] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Affiliation(s)
- Suki Kang
- Department of Pathology, Yonsei University College of Medicine, Seoul, Korea, Department of Pathology, Pundang CHA Medical Hospital, Sungnam, Kyunggio province, Korea, Brain Korea 21 Project for Medical Science, Seoul, Korea, and Genomine Research Division, Genomine, Inc., Pohang, Kyungbuk, Korea
| | - Min Ju Kim
- Department of Pathology, Yonsei University College of Medicine, Seoul, Korea, Department of Pathology, Pundang CHA Medical Hospital, Sungnam, Kyunggio province, Korea, Brain Korea 21 Project for Medical Science, Seoul, Korea, and Genomine Research Division, Genomine, Inc., Pohang, Kyungbuk, Korea
| | - HeeJung An
- Department of Pathology, Yonsei University College of Medicine, Seoul, Korea, Department of Pathology, Pundang CHA Medical Hospital, Sungnam, Kyunggio province, Korea, Brain Korea 21 Project for Medical Science, Seoul, Korea, and Genomine Research Division, Genomine, Inc., Pohang, Kyungbuk, Korea
| | - Baek Gil Kim
- Department of Pathology, Yonsei University College of Medicine, Seoul, Korea, Department of Pathology, Pundang CHA Medical Hospital, Sungnam, Kyunggio province, Korea, Brain Korea 21 Project for Medical Science, Seoul, Korea, and Genomine Research Division, Genomine, Inc., Pohang, Kyungbuk, Korea
| | - Yoon Pyo Choi
- Department of Pathology, Yonsei University College of Medicine, Seoul, Korea, Department of Pathology, Pundang CHA Medical Hospital, Sungnam, Kyunggio province, Korea, Brain Korea 21 Project for Medical Science, Seoul, Korea, and Genomine Research Division, Genomine, Inc., Pohang, Kyungbuk, Korea
| | - Kyu Sub Kang
- Department of Pathology, Yonsei University College of Medicine, Seoul, Korea, Department of Pathology, Pundang CHA Medical Hospital, Sungnam, Kyunggio province, Korea, Brain Korea 21 Project for Medical Science, Seoul, Korea, and Genomine Research Division, Genomine, Inc., Pohang, Kyungbuk, Korea
| | - Ming-Qing Gao
- Department of Pathology, Yonsei University College of Medicine, Seoul, Korea, Department of Pathology, Pundang CHA Medical Hospital, Sungnam, Kyunggio province, Korea, Brain Korea 21 Project for Medical Science, Seoul, Korea, and Genomine Research Division, Genomine, Inc., Pohang, Kyungbuk, Korea
| | - Hangran Park
- Department of Pathology, Yonsei University College of Medicine, Seoul, Korea, Department of Pathology, Pundang CHA Medical Hospital, Sungnam, Kyunggio province, Korea, Brain Korea 21 Project for Medical Science, Seoul, Korea, and Genomine Research Division, Genomine, Inc., Pohang, Kyungbuk, Korea
| | - Hyung Jin Na
- Department of Pathology, Yonsei University College of Medicine, Seoul, Korea, Department of Pathology, Pundang CHA Medical Hospital, Sungnam, Kyunggio province, Korea, Brain Korea 21 Project for Medical Science, Seoul, Korea, and Genomine Research Division, Genomine, Inc., Pohang, Kyungbuk, Korea
| | - Hye Kyung Kim
- Department of Pathology, Yonsei University College of Medicine, Seoul, Korea, Department of Pathology, Pundang CHA Medical Hospital, Sungnam, Kyunggio province, Korea, Brain Korea 21 Project for Medical Science, Seoul, Korea, and Genomine Research Division, Genomine, Inc., Pohang, Kyungbuk, Korea
| | - Hae Ree Yun
- Department of Pathology, Yonsei University College of Medicine, Seoul, Korea, Department of Pathology, Pundang CHA Medical Hospital, Sungnam, Kyunggio province, Korea, Brain Korea 21 Project for Medical Science, Seoul, Korea, and Genomine Research Division, Genomine, Inc., Pohang, Kyungbuk, Korea
| | - Dong Su Kim
- Department of Pathology, Yonsei University College of Medicine, Seoul, Korea, Department of Pathology, Pundang CHA Medical Hospital, Sungnam, Kyunggio province, Korea, Brain Korea 21 Project for Medical Science, Seoul, Korea, and Genomine Research Division, Genomine, Inc., Pohang, Kyungbuk, Korea
| | - Nam Hoon Cho
- Department of Pathology, Yonsei University College of Medicine, Seoul, Korea, Department of Pathology, Pundang CHA Medical Hospital, Sungnam, Kyunggio province, Korea, Brain Korea 21 Project for Medical Science, Seoul, Korea, and Genomine Research Division, Genomine, Inc., Pohang, Kyungbuk, Korea
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Li X, Di B, Shang Y, Zhou Y, Cheng J, He Z. Clinicopathologic risk factors for distant metastases from head and neck squamous cell carcinomas. Eur J Surg Oncol 2009; 35:1348-53. [PMID: 19616915 DOI: 10.1016/j.ejso.2009.06.010] [Citation(s) in RCA: 47] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2009] [Revised: 06/24/2009] [Accepted: 06/29/2009] [Indexed: 11/16/2022] Open
Abstract
AIMS The aim of this study is to investigate the clinicopathologic risk factors associated with distant metastases (DMs) from head and neck squamous cell carcinomas (HNSCCs). METHODS Between February 1990 and February 2000, a retrospective analysis of 391 HNSCC patients was performed. The frequency and the clinicopathologic risk factors for DM were evaluated by using univariate chi(2) tests and multiple stepwise logistic regression models. Statistical analysis of overall survival was performed by using Kaplan-Meier method. RESULTS 44 patients (11.3%) developed DM in clinic. In a univariate analysis, clinical N stage, primary tumor site, level of tumor invasion, pathologic N stage and number of levels with pathologic lymph node were found to be significantly associated with the risk of DM. In a multivariate analysis, the most significant risk factors were number of levels with pathologic lymph node, level of tumor invasion, and primary tumor site. Kaplan-Meier analysis showed that overall survival rates of 44 patients with DMs in clinic were 56.8% at 1 year, 9.1% at 3 years, and 6.8% at 5 years, respectively. CONCLUSIONS The number of levels with pathologic lymph node, the site of primary tumor and the level of tumor invasion are decisive risk factors in determining the development of DM in head and neck SCC patients. Patients with multilevel nodal involvement in neck, with laryngeal and hypopharyngeal carcinomas, and patients with primary tumor invasion into muscular, bone or cartilage have the highest risk of developing DM.
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Affiliation(s)
- X Li
- Department of Otorhinolaryngology, Head and Neck Surgery, Center for Otorhinolaryngological Diseases, Bethune International Peace Hospital, Shijiazhuang 050082, China.
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18
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Geurts T, van Velthuysen M, Broekman F, Hooft van Huysduynen T, van den Brekel M, van Zandwijk N, van Tinteren H, Nederlof P, Balm A, Brakenhoff R. Differential Diagnosis of Pulmonary Carcinoma Following Head and Neck Cancer by Genetic Analysis. Clin Cancer Res 2009; 15:980-5. [DOI: 10.1158/1078-0432.ccr-08-1968] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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19
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Bremmer JF, Graveland AP, Brink A, Braakhuis BJM, Kuik DJ, Leemans CR, Bloemena E, van der Waal I, Brakenhoff RH. Screening for oral precancer with noninvasive genetic cytology. Cancer Prev Res (Phila) 2009; 2:128-33. [PMID: 19174582 DOI: 10.1158/1940-6207.capr-08-0128] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Oral squamous cell carcinomas develop in precancerous fields consisting of genetically altered mucosal epithelial cells. These precancerous fields may appear as clinically visible lesions, in particular, oral leukoplakia, but the large majority remains clinically undetectable. The aim of this study was to assess the potential value of a noninvasive screening approach to detect precancerous fields. As a first step, we developed a suitable assay and investigated 25 leukoplakia patients and 20 noncancer control subjects. Exfoliated cells were removed by a brush from multiple small areas of the oral mucosa, including the leukoplakia. Brushed samples were investigated for allelic imbalance (AI) at chromosomes 3p, 9p, 11q, and 17p using microsatellite markers known to show frequent alterations in oral precancer. AI was absent in all (137) of the samples of the 20 control subjects, yielding a specificity of 100%. AI was detected in exfoliated cell samples of 40% (10 of 25) of the leukoplakia lesions studied. Genetic changes were also found outside the leukoplakia lesions. Most frequent was AI at 9p (9 of 10). The noninvasive assay was validated against the biopsy results of the leukoplakia lesions yielding an estimate of sensitivity of 78% (7 of 9) and a positive predictive value of 100% (7 of 7). Altogether, these results show the feasibility of a noninvasive genetic screening approach for the detection and monitoring of oral precancer. This assay could therefore contribute to the secondary prevention of oral squamous cell carcinoma. The assay also shows promise for the detection of precancerous changes that are not macroscopically visible.
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Affiliation(s)
- Jantine F Bremmer
- Department of Oral and Maxillofacial Surgery and Oral Pathology, VU University Medical Center, Amsterdam, the Netherlands
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20
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van Zeeburg HJT, Snijders PJF, Wu T, Gluckman E, Soulier J, Surralles J, Castella M, van der Wal JE, Wennerberg J, Califano J, Velleuer E, Dietrich R, Ebell W, Bloemena E, Joenje H, Leemans CR, Brakenhoff RH. Clinical and molecular characteristics of squamous cell carcinomas from Fanconi anemia patients. J Natl Cancer Inst 2008; 100:1649-53. [PMID: 19001603 DOI: 10.1093/jnci/djn366] [Citation(s) in RCA: 77] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Fanconi anemia is a recessively inherited disease that is characterized by congenital abnormalities, bone marrow failure, and a predisposition to develop cancer, particularly squamous cell carcinomas (SCCs) in the head and neck and anogenital regions. Previous studies of Fanconi anemia SCCs, mainly from US patients, revealed the presence of high-risk human papillomavirus (HPV) DNA in 21 (84%) of 25 tumors analyzed. We examined a panel of 21 SCCs mainly from European Fanconi anemia patients (n = 19 FA patients; 16 head and neck squamous cell carcinomas [HNSCCs], 2 esophageal SCCs, and 3 anogenital SCCs) for their clinical and molecular characteristics, including patterns of allelic loss, TP53 mutations, and the presence of HPV DNA by GP5+/6+ polymerase chain reaction. HPV DNA was detected in only two (10%) of 21 tumors (both anogenital SCCs) but in none of the 16 HNSCCs. Of the 18 tumors analyzed, 10 contained a TP53 mutation. The patterns of allelic loss were comparable to those generally found in sporadic SCCs. Our data show that HPV does not play a major role in squamous cell carcinogenesis in this cohort of Fanconi anemia patients and that the Fanconi anemia SCCs are genetically similar to sporadic SCCs despite having a different etiology.
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Affiliation(s)
- Hester J T van Zeeburg
- Department of Otolaryngology/Head-Neck Surgery, Section Tumor Biology, VU University Medical Center, Amsterdam, the Netherlands
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21
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Cabanillas R, Llorente JL. The Stem Cell Network model: clinical implications in cancer. Eur Arch Otorhinolaryngol 2008; 266:161-70. [DOI: 10.1007/s00405-008-0809-3] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2008] [Accepted: 09/03/2008] [Indexed: 01/22/2023]
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22
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Bremmer JF, Braakhuis BJM, Brink A, Broeckaert MAM, Beliën JAM, Meijer GA, Kuik DJ, René Leemans C, Bloemena E, Van Der Waal I, Brakenhoff RH. Comparative evaluation of genetic assays to identify oral pre-cancerous fields. J Oral Pathol Med 2008; 37:599-606. [DOI: 10.1111/j.1600-0714.2008.00682.x] [Citation(s) in RCA: 30] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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23
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Bradley PJ, MacLennan K, Brakenhoff RH, Leemans CR. Status of primary tumour surgical margins in squamous head and neck cancer: prognostic implications. Curr Opin Otolaryngol Head Neck Surg 2007; 15:74-81. [PMID: 17413406 DOI: 10.1097/moo.0b013e328058670f] [Citation(s) in RCA: 41] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
PURPOSE OF REVIEW To look at the current published literature on squamous-cell carcinoma of the head and neck, at the microscopic level, and the implications of molecular and genetic research. RECENT FINDINGS The goal of surgical treatment is still complete eradication of the primary tumour with a 'safe margin'. To achieve this 'safe margin' is not always possible, however. Currently, there is no agreed consensus as to how to submit tissue for frozen section, or how to define a 'clear margin'. Histopathologically, there are two margins requiring analysis, the mucosal margin and the 'deep margin'. Margins declared histopathologically 'tumour free' can be found to be positive for malignant/premalignant cells when molecular markers are applied. When the presence of genetically altered cells is suggested in the margins, there is an increased risk of a recurrent or new tumour. There is limited application of such knowledge and further trials are awaited. SUMMARY Standard histopathology has limitations for examining surgical margins. The probability of recurrent malignant disease is explained and this is much increased when molecular markers are identified in the resected margins. Further studies are required.
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Affiliation(s)
- Patrick J Bradley
- Department of Otolaryngology-Head and Neck Surgery, Nottingham University Hospitals, UK.
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Takahashi K, Kohno T, Matsumoto S, Nakanishi Y, Arai Y, Yamamoto S, Fujiwara T, Tanaka N, Yokota J. Clonal and parallel evolution of primary lung cancers and their metastases revealed by molecular dissection of cancer cells. Clin Cancer Res 2007; 13:111-20. [PMID: 17200345 DOI: 10.1158/1078-0432.ccr-06-0659] [Citation(s) in RCA: 30] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
PURPOSE Several models of cancer progression, including clonal evolution, parallel evolution, and same-gene models, have been proposed to date. The purpose of this study is to investigate the authenticity of these models by comparison of accumulated genetic alterations between primary and corresponding metastatic lung cancers. EXPERIMENTAL DESIGN A whole-genome allelic imbalance scanning using a high-resolution single nucleotide polymorphism array and mutational analysis of the p53, EGFR, and KRAS genes were done on eight sets of primary and metastatic lung cancers. Based on the genotype data, the natural history of each case was deduced, and candidate metastasis suppressor loci were determined. RESULTS Five to 20 chromosomal regions showed allelic imbalance in each tumor. Accumulated genetic alterations were similar between primary and corresponding metastatic tumors, and the majority(>67%) of genetic alterations detected in metastatic tumors was also detected in the corresponding primary tumors. On the other hand, in seven of the eight cases, there were genetic alterations accumulated only in metastatic tumors. Among these alterations, allelic imbalances at chromosome 11p15 and 11p11-p13 regions were the most frequent ones (4 of 8, 50%). Likewise, four cases showed genetic alterations detected only in primary tumors. CONCLUSIONS The natural history of each case indicated that the process of metastasis varies among cases, and that all three models are applicable to lung cancer progression. According to the clonal and parallel evolution models, it is possible that a metastasis suppressor gene(s) for lung cancer is present on chromosome 11p.
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Affiliation(s)
- Kenji Takahashi
- Biology Division, National Cancer Center Research Institute, Tokyo, Japan
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25
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Balcer-Kubiczek EK, Attarpour M, Jiang J, Kennedy AS, Suntharalingam M. Cytotoxicity of Docetaxel (Taxotere ®) Used as a Single Agent and in Combination with Radiation in Human Gastric, Cervical and Pancreatic Cancer Cells. Chemotherapy 2006; 52:231-40. [PMID: 16899972 DOI: 10.1159/000094869] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2005] [Accepted: 09/06/2005] [Indexed: 01/05/2023]
Abstract
BACKGROUND Docetaxel (Taxotere) has gained increasing attention in clinical applications. We investigated the cytotoxic and radiosensitizing potential of docetaxel at nanomolar concentrations in six cell lines derived from tumors that rarely respond to radiation or chemotherapy, with special consideration of mechanisms of resistance, including the p53 mutational status. METHODS Cells derived from carcinomas of the human stomach (p53 mutant Hs746T, p53 wild type AGS), cervix (p53 wild type CaSki, p53 mutant HeLa) or pancreas (p53 mutant BxPC3 and Capan-1) were treated for 24 h with docetaxel at various concentrations (0.1-5 nM) to obtain drug doses for inhibiting clonogenicity by approximately 50% (IC(50)). Cells were X-irradiated without docetaxel or after 24 h of docetaxel treatment at IC(50). Radiation doses ranged from 0 up to 10 Gy. Mitotic index, multinucleation, apoptosis and necrosis after 24 h of drug exposure at 1 nM were quantified in representative gastric and cervical cell lines by fluorescence microscopy. RESULTS Docetaxel treatment for 24 h resulted in a dose-dependent loss of clonogenicity, with 1.0 or 0.3 nM producing approximately 50% survival of gastric or cervix and pancreatic cells, respectively. After correction for the drug toxicity, the combination of isoeffective concentrations of docetaxel with graded X-ray doses resulted either in a moderate synergy or additivity. The dose reduction factors at the 50 and 20% survival levels were statistically greater than those for Hs746T or AGS cells. For CaSki, HeLa, BxPC3 or Capan-1 cells, the dose reduction factors were statistically not different from unity. CONCLUSION Docetaxel was active against tumor cells of different origins. Combined effects of docetaxel and radiation were at least additive and depended on the intrinsic sensitivity to drug alone. There was no significant evidence of drug-induced mitotic arrest. Compared to drug-resistant gastric cells, exposure to the drug alone of drug-sensitive cervical cells resulted in more severe multinucleation. The p53 status did not contribute directly to the effect of drug alone or in combination with radiation.
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Affiliation(s)
- Elizabeth K Balcer-Kubiczek
- Department of Radiation Oncology, University of Maryland School of Medicine and Greenebaum Cancer Center, Baltimore, 21201, USA.
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Geurts TW, Nederlof PM, van den Brekel MWM, van't Veer LJ, de Jong D, Hart AAM, van Zandwijk N, Klomp H, Balm AJM, van Velthuysen MLF. Pulmonary squamous cell carcinoma following head and neck squamous cell carcinoma: metastasis or second primary? Clin Cancer Res 2005; 11:6608-14. [PMID: 16166439 DOI: 10.1158/1078-0432.ccr-05-0257] [Citation(s) in RCA: 76] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
PURPOSE To distinguish a metastasis from a second primary tumor in patients with a history of head and neck squamous cell carcinoma and subsequent pulmonary squamous cell carcinoma. EXPERIMENTAL DESIGN For 44 patients with a primary squamous cell carcinoma of the head and neck followed by a squamous cell carcinoma of the lung, clinical data, histology, and analysis of loss of heterozygosity (LOH) were used to differentiate metastases from second primary tumors. RESULTS Clinical evaluation suggested 38 patients with metastases and 6 with second primaries. We developed a novel interpretation strategy based on biological insight and on our observation that multiple LOH on different chromosome arms are not independent. LOH analysis indicated metastatic disease in 19 cases and second primary squamous cell carcinoma in 24 cases. In one case, LOH analysis was inconclusive. For 25 patients, LOH supported the clinical scoring, and in 18 cases, it did not. These 18 discordant cases were all considered to be second primary tumors by LOH analysis. CONCLUSIONS A considerable number of squamous cell lung lesions (50% in this study), clinically interpreted as metastases, are suggested to be second primaries by LOH analysis. For these patients, a surgical approach with curative intent may be justified.
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Affiliation(s)
- Tom W Geurts
- Department of ORL, Academic Medical Center, The Netherlands Cancer Institute/Antoni van Leeuwenhoek Hospital, Amsterdam, the Netherlands
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Miller SJ, Lavker RM, Sun TT. Interpreting epithelial cancer biology in the context of stem cells: tumor properties and therapeutic implications. Biochim Biophys Acta Rev Cancer 2005; 1756:25-52. [PMID: 16139432 DOI: 10.1016/j.bbcan.2005.07.003] [Citation(s) in RCA: 35] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2005] [Revised: 07/12/2005] [Accepted: 07/15/2005] [Indexed: 12/17/2022]
Abstract
Over 90% of all human neoplasia is derived from epithelia. Significant progress has been made in the identification of stem cells of many epithelia. In general, epithelial stem cells lack differentiation markers, have superior in vivo and in vitro proliferative potential, form clusters in association with a specialized mesenchymal environment (the 'niche'), are located in well-protected and nourished sites, and are slow-cycling and thus can be experimentally identified as 'label-retaining cells'. Stem cells may divide symmetrically giving rise to two identical stem cell progeny. Any stem cells in the niche, which defines the size of the stem cell pool, may be randomly expelled from the niche due to population pressure (the stochastic model). Alternatively, a stem cell may divide asymmetrically yielding one stem cell and one non-stem cell that is destined to exit from the stem cell niche (asymmetric division model). Stem cells separated from their niche lose their stemness, although such a loss may be reversible, becoming 'transit-amplifying cells' that are rapidly proliferating but have a more limited proliferative potential, and can give rise to terminally differentiated cells. The identification of the stem cell subpopulation in a normal epithelium leads to a better understanding of many previously enigmatic properties of an epithelium including the preferential sites of carcinoma formation, as exemplified by the almost exclusive association of corneal epithelial carcinoma with the limbus, the corneal epithelial stem cell zone. Being long-term residents in an epithelium, stem cells are uniquely susceptible to the accumulation of multiple, oncogenic changes giving rise to tumors. The application of the stem cell concept can explain many important carcinoma features including the clonal origin and heterogeneity of tumors, the occasional formation of tumors from the transit amplifying cells or progenitor cells, the formation of precancerous 'patches' and 'fields', the mesenchymal influence on carcinoma formation and behavior, and the plasticity of tumor cells. While the concept of cancer stem cells is extremely useful and it is generally assumed that such cells are derived from normal stem cells, more work is needed to identify and characterize epithelial cancer stem cells, to address their precise relationship with normal stem cells, to study their markers and their proliferative and differentiation properties and to design new therapies that can overcome their unusual resistance to chemotherapy and other conventional tumor modalities.
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Affiliation(s)
- Stanley J Miller
- Department of Dermatology, Johns Hopkins Hospital, Baltimore, MD 21287, USA.
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Kyzas PA, Loizou KT, Ioannidis JPA. Selective reporting biases in cancer prognostic factor studies. J Natl Cancer Inst 2005; 97:1043-55. [PMID: 16030302 DOI: 10.1093/jnci/dji184] [Citation(s) in RCA: 177] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022] Open
Abstract
BACKGROUND Nonreported and selectively reported information and the use of different definitions may introduce biases in the literature of prognostic factors. We probed these biases in a meta-analysis of a prognostic factor for head and neck squamous cell cancer (HNSCC) mortality that has drawn wide attention--the status of the tumor suppressor protein TP53. METHODS We compared results of meta-analyses that included published data plus unpublished data retrieved from investigators; published data; and only published data indexed with "survival" or "mortality" in MEDLINE/EMBASE, with or without standardized definitions. We also evaluated whether previously published meta-analyses on mortality predictors for various malignancies addressed issues of retrieval and standardized information. All statistical tests were two-sided. RESULTS For the 18 studies with 1364 patients that included published and indexed data, we obtained a highly statistically significant association between TP53 status and mortality. When we used the definitions preferred by each publication, the association was stronger (risk ratio [RR] = 1.38, 95% confidence interval [CI] = 1.13 to 1.67; P = .001) than when we standardized definitions (RR = 1.27, 95% CI = 1.06 to 1.53; P = .011). The addition of 13 studies with 1028 subjects that included published but not indexed data reduced the observed association (RR = 1.23, 95% CI = 1.03 to 1.47; P = .02). Finally, when we obtained data from investigators (11 studies with 996 patients) and analyzed it with all other data, statistical significance was lost (RR = 1.16, 95% CI = 0.99 to 1.35; P = .06). Among 18 published meta-analyses of 37 cancer prognostic factors, 13 (72%) did not use standardized definitions and 16 (89%) did not retrieve additional information. CONCLUSIONS Selective reporting may spuriously inflate the importance of postulated prognostic factors for various malignancies. We recommend that meta-analyses thereof should maximize retrieval of information and standardize definitions.
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Affiliation(s)
- Panayiotis A Kyzas
- Department of Hygiene and Epidemiology, School of Medicine, University of Ioannina, Ioannina, Greece
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van Zeeburg HJT, Snijders PJF, Pals G, Hermsen MAJA, Rooimans MA, Bagby G, Soulier J, Gluckman E, Wennerberg J, Leemans CR, Joenje H, Brakenhoff RH. Generation and Molecular Characterization of Head and Neck Squamous Cell Lines of Fanconi Anemia Patients. Cancer Res 2005; 65:1271-6. [PMID: 15735012 DOI: 10.1158/0008-5472.can-04-3665] [Citation(s) in RCA: 65] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Patients with Fanconi anemia (FA) are prone to develop malignancies at an early age. Besides hematologic malignancies, squamous cell carcinomas in the anogenital region and head and neck are also frequently found in these patients. The aim of this study was to generate a panel of head and neck squamous cell carcinoma (HNSCC) cell lines and xenografts of FA HNSCC, and to characterize these cell lines in comparison with a panel of seven cell lines from patients with sporadic HNSCC. Analyses have been done on sensitivity to DNA cross-linking agents, loss of heterozygosity profile, TP53 mutations, TP53 polymorphisms and the presence of human papillomavirus. Four FA HNSCC cell lines were established. Sensitivity to DNA cross-linking agents (cisplatin) in the FA HNSCC cell lines was on average 10 times higher as compared with the sporadic HNSCC cell lines. Human papillomavirus was not detected in any of the FA or sporadic cell lines. No differences were found in loss of heterozygosity pattern, TP53 mutation frequency and TP53 polymorphism between FA and sporadic HNSCC cell lines. This is the first report on the generation of squamous cell lines of FA patients. The FA HNSCC cell lines we have generated may be utilized for future studies and might aid in the development of new preventive therapies for FA patients. The genetic characteristics of these cell lines suggest that FA HNSCC are not very different from sporadic HNSCC, except for the sensitivity to cisplatin which is consistent with the known cellular FA phenotype.
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Affiliation(s)
- Hester J T van Zeeburg
- Department of Otolaryngology/Head-Neck Surgery, Vrije University Medical Center, Amsterdam, The Netherlands
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Tabor MP, Brakenhoff RH, Ruijter-Schippers HJ, Kummer JA, Leemans CR, Braakhuis BJM. Genetically altered fields as origin of locally recurrent head and neck cancer: a retrospective study. Clin Cancer Res 2004; 10:3607-13. [PMID: 15173066 DOI: 10.1158/1078-0432.ccr-03-0632] [Citation(s) in RCA: 121] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
PURPOSE Surgeons treating patients with head and neck squamous cell carcinoma (HNSCC) rely heavily on histology to decide whether the resection margins are tumor free and subsequent adjuvant treatments can be omitted. However, despite the presence of tumor-free margins, 10-30% of HNSCC patients still develop a locally recurrent tumor. Evidence is available that recurrent cancer develops from either (a). outgrowth of a relatively small number of tumor cells that have not been detected by the pathologist or (b). a precursor lesion in which additional genetic alterations have led again to invasive cancer. EXPERIMENTAL DESIGN In a retrospective study on 13 HNSCC cases, we analyzed the primary tumor, its surrounding histologically tumor-free resection margins, and local recurrences for loss of heterozygosity (22 microsatellite markers on 6 chromosomes) and TP53 mutations to determine the origin of the recurrent cancer. RESULTS A precursor lesion was absent in 5 of 13 (39%) cases, and the genetic similarity of the primary and recurrent cancer was high, providing evidence that residual cancer cells were the origin of recurrence. For the remaining eight cases (61%) a genetically related precursor lesion (field) was detected, and for five of these cases, evidence was found that both the primary and recurrent carcinoma originated from this field. The remaining three cases were less conclusive. CONCLUSIONS This study explains the pathobiology of locally recurrent HNSCC in patients with histologically tumor-free resection margins and indicates that the development of novel therapies to decrease the local recurrence rates in HNSCC should not only be focused on eradicating residual cancer cells but also on the precursor lesions that are left behind.
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Affiliation(s)
- Maarten P Tabor
- Departments of Otolaryngology/Head-Neck Surgery and Pathology, VU University Medical Center, Amsterdam, the Netherlands
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van Houten VMM, Leemans CR, Kummer JA, Dijkstra J, Kuik DJ, van den Brekel MWM, Snow GB, Brakenhoff RH. Molecular diagnosis of surgical margins and local recurrence in head and neck cancer patients: a prospective study. Clin Cancer Res 2004; 10:3614-20. [PMID: 15173067 DOI: 10.1158/1078-0432.ccr-03-0631] [Citation(s) in RCA: 113] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
PURPOSE Approximately 10-30% of surgically treated head and neck cancer patients develop local recurrences while the resection margins are histologically tumor free. These recurrences may arise from cancer cells left behind but not detected by the pathologist, or they may develop from precursor lesions adjacent to the tumor that were not completely resected. We have investigated whether TP53-mutated DNA in the surgical margins is suitable to identify patients with head and neck squamous cell carcinoma at risk for local and locoregional recurrence. EXPERIMENTAL DESIGN In a prospective cohort study of 76 patients with histologically tumor-free margins, the presence of TP53-mutated DNA was determined in the surgical margins using the phage plaque assay and correlated to clinical outcome. Immunostaining of the molecular-positive margins for mutated p53 protein was used to identify whether unresected precursor lesions or residual tumor cells were left behind. RESULTS The absence of TP53-mutated DNA in surgical margins was significantly associated with remaining free of local and locoregional recurrence (P = 0.027 and P = 0.028, respectively). Moreover, the presence of TP53-mutated DNA in the surgical margins was an independent prognosticator for locoregional recurrence (relative risk = 7.1; P = 0.021; 95% confidence interval, 0.9-56). In 20% of the cases, the presence of TP53-mutated DNA in the surgical margins was found to be related to the presence of tumor-related precursor lesions. CONCLUSIONS This study shows the value of TP53-mutated DNA as a molecular marker to predict locally recurrent head and neck squamous cell carcinoma. The observation that all patients who were negative for TP53-mutated DNA in the surgical margins remained free of local recurrence raises hope that molecular analysis of histologically tumor-free surgical margins can be exploited to decide on postoperative radiotherapy. Furthermore, our data provide evidence that local recurrences originate mainly from tumor cells left behind but also originate, in part, from unresected precursor lesions.
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Affiliation(s)
- Viola M M van Houten
- Departments of Otolaryngology/Head-Neck Surgery, Pathology, and Clinical Epidemiology and Biostatistics, Vrije Universiteit Medical Center, Amsterdam, the Netherlands
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Choi HR, Roberts DB, Johnigan RH, Sturgis EM, Rosenthal DI, Weber RS, Luna MA, Batsakis JG, El-Naggar AK. Molecular and clinicopathologic comparisons of head and neck squamous carcinoma variants: common and distinctive features of biological significance. Am J Surg Pathol 2004; 28:1299-310. [PMID: 15371945 DOI: 10.1097/01.pas.0000138003.46650.dc] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
To investigate, for the first time, the events associated with the phenotypic and clinical diversities of head and neck squamous carcinomas (HNSC), we performed molecular analyses on 92 primary tumors representing the entire spectrum of the morphologic subtypes using microsatellite markers at chromosome 3p, 4p, 8p, 9p, 11q, 17p, and 18q regions and correlated the results with the clinicopathologic features and patients' survival. Loss of heterozygosity (LOH) at D9S168 and D9S171 markers on chromosome 9p regions was commonly identified in all subtypes. Distinctive alterations in certain subtypes were noted at chromosomes 3p, 4p, 8p, and 11p regions. In general, less aggressive types (verrucous, papillary, and well-differentiated conventional) had a significantly lower LOH incidence than the more aggressive (basaloid, sarcomatoid, and high-grade conventional squamous carcinoma) categories. Significant association between LOH and age, stage, nodal status, and patient outcome was found. Survival analysis revealed that pathologic categorization (less versus more aggressive) and LOH at marker D11S4167 and D3S2432 are independent predictors of patients' survival. Our analysis also defined a set of limited markers that account for most of alterations within and across these tumor subtypes. Our study indicates that 1) certain genetic markers are common to all subtypes of HNSC supporting their early involvement in tumorigenesis, 2) inter- and intratumoral genetic differences evolve subsequently and may underlie their morphologic heterogeneity, 3) high incidence of LOH in certain regions characterizes aggressive tumors, 4) categorical classification and LOH at 11p and 3p regions independently correlated with patient survival, and 5) a limited set of markers identify the majority of genetic alterations in these tumors.
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Affiliation(s)
- Hong Ran Choi
- Department of Pathology, The University of Texas M. D. Anderson Cancer Center, 1515 Holcombe Boulevard, Houston, TX 77030, USA
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Takebayashi S, Hickson A, Ogawa T, Jung KY, Mineta H, Ueda Y, Grénman R, Fisher SG, Carey TE. Loss of chromosome arm 18q with tumor progression in head and neck squamous cancer. Genes Chromosomes Cancer 2004; 41:145-54. [PMID: 15287027 DOI: 10.1002/gcc.20066] [Citation(s) in RCA: 43] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022] Open
Abstract
Loss of 18q was analyzed in 21 sets of head and neck squamous cell carcinoma (HNSCC) cell lines derived from primary and secondary tumors in the same patients. Only 3 of the 21 cell line pairs had no loss of 18q. In the remaining 18 sets, loss of heterozygosity (LOH) affecting 18q was found in either the primary or the secondary lines or both. In every case but one, the same chromosome was affected in both the primary and secondary cell lines. In 8 sets, the 18q loss occurred in the primary tumor and remained stable through the subsequent tumor progression. The primary and secondary lines differed in 18q loss in 10 of 18 (56%) cases with 18q LOH. In 3 of the 10 pairs that differed, 18q LOH was found in only the primary line, indicating that the loss developed after the metastatic or recurrent tumor population had diverged from the primary tumor population. In the other 7 pairs, 18q LOH developed or progressed with tumor recurrence or metastasis. Of these, 3 of 7 had 18q LOH in only the secondary lines, and 4 of 7 had 18q LOH in both the primary and secondary lines, but the extent of LOH was greater in the secondary lines than in the primary lines, indicating that additional rearrangements of the same chromosome occurred with progression. These cases showed that interstitial loss often progresses to consolidated loss in vivo. However, in vitro, the cell lines from the primary tumors with interstitial loss maintain those chromosomes over long-term culture. LOH on 18q in cell lines from previously untreated primary tumors was significantly associated with advanced tumor stage (P=0.0242) and decreased survival (P=0.0453). The findings are consistent with the concept that 18q LOH is an event associated with tumor progression and suggest that inactivation and loss of one or more genes on 18q contributes to aggressive tumor behavior.
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Affiliation(s)
- Satoru Takebayashi
- Department of Otolaryngology, Hamamatsu University School of Medicine, Hamamatsu, Japan
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Preuss SF, Brieger J, Essig EK, Stenzel MJ, Mann WJ. Quantitative DNA Measurement in Oropharyngeal Squamous Cell Carcinoma and Surrounding Mucosa. ACTA ACUST UNITED AC 2004; 66:320-4. [PMID: 15668531 DOI: 10.1159/000081889] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2004] [Accepted: 09/09/2004] [Indexed: 11/19/2022]
Abstract
OBJECTIVE The appearance of local recurrences, distant metastases and second primary tumors limit the survival rate of patients with head and neck squamous cell carcinomas. The presence of genetic alterations at the resection margins is an indicator of inadequate excision and a predictor of local failure. DESIGN To receive insight into the genetic abnormalities in the mucosa surrounding oropharyngeal cancers, we performed a quantitative DNA measurement in the primary tumor and the surrounding areas. RESULTS We found a high level of DNA irregularity in primary tumors. The DNA irregularity decreased in specimens taken at a distance of 1 and 2 cm from the tumor margin. CONCLUSIONS The genetically altered field is thought to determine the risk for recurrence of a second tumor. We therefore believe that the genetic analysis of tissue surrounding the tumor could become a feasible diagnostic procedure to determine the individual risk for local recurrence or second primary tumors.
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Affiliation(s)
- S F Preuss
- Department of Otorhinolaryngology, Head and Neck Surgery, University Hospital, School of Medicine, Mainz, Germany
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Tremmel SC, Götte K, Popp S, Weber S, Hörmann K, Bartram CR, Jauch A. Intratumoral genomic heterogeneity in advanced head and neck cancer detected by comparative genomic hybridization. CANCER GENETICS AND CYTOGENETICS 2003; 144:165-74. [PMID: 12850380 DOI: 10.1016/s0165-4608(03)00011-6] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
Little is known about the extent of intratumoral genetic heterogeneity in head and neck squamous cell carcinoma (HNSCC). We therefore examined 79 stage III and IV primary HNSCCs (P) and matched lymph node metastases (M) for over- and underrepresentation of specific chromosome regions by comparative genomic hybridization (CGH). The overall ratio of gains and losses was higher in metastases than in primary tumors (4/1 vs. 2.5/1). Gains of 3q (78.1% P vs. 87.5% M) and 11q (78.1% P vs. 62.5% M) and deletions of 3p (43.8% P vs. 34.4% M) and 9p (31.3% P vs. 15.6% M) were most frequently detected. The highest rate of intratumoral discordance was observed for primary tumors and corresponding metastases (32.8%) compared with matched pairs of two metastases (26.5%) and of two anatomically distinct sides of one primary tumor (24.3%). Furthermore, the discordance rate was dependent on the primary tumor site (oral cavity 49.2%, oropharynx 31%, hypopharynx 30.3%, and larynx 27.3%). In some tumors, the extent of genomic discordance argues against a monoclonal origin. In conclusion, we found a high individual variation of intratumoral genomic heterogeneity depending on the localization and selection of matched pairs. These findings are of specific importance in view of establishing prognostic markers.
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Affiliation(s)
- Susanne C Tremmel
- Institute of Human Genetics, University of Heidelberg, Heidelberg, Germany
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Yang J, Qin LX, Ye SL, Liu YK, Li Y, Gao DM, Chen J, Tang ZY. The abnormalities of chromosome 8 in two hepatocellular carcinoma cell clones with the same genetic background and different metastatic potential. J Cancer Res Clin Oncol 2003; 129:303-8. [PMID: 12750998 DOI: 10.1007/s00432-003-0436-8] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2002] [Accepted: 01/28/2003] [Indexed: 12/24/2022]
Abstract
PURPOSE Two hepatocellular carcinoma (HCC) cell clones named MHCC97-H and MHCC97-L with different metastatic potential have recently been established from the same parent cell line MHCC97 in our institute. The cytogenetic alterations of these two clones were investigated in this study to explore the possible clues to the mechanism involved in HCC metastasis. METHODS Their chromosomal aberrations were analyzed with comparative genomic hybridization (CGH), chromosome-specific painting, and two-color fluorescence in situ hybridization (FISH). RESULTS The aberrations were found in a total of 17 chromosomes, and six kinds of the aberrations including gains of 1q, 7q, 8q, 20, and the losses of 8p23, 21q were found both in the two cell clones and their parent cell line MHCC97. Using modified CGH, with the DNA of MHCC97-L as control to test the MHCC97-H clone, the loss of 8p23 and the gain of 1q31-32, 8q21.3-22, 13q22, 17q22 were highlighted, and the most significant finding was on chromosome 8. Dual color FISH combining a pericentromeric probe and a BAC probe mapping at 8q23.1 was then performed to verify this result, and the signal ratios of the BAC to centromere were 1.43 in MHCC97-H and 1.45 in MHCC97-L, confirming the over-representations at 8q in both cells. Another interesting finding in the dual-color metaphase FISH was the intrachromosomal translocation of 8q to 8p (looked like an isochromosome 8) and non-reciprocal translocation of part of 8q to 4q, which was further clarified and proved by the FISH with whole chromosome 8 painting probe. CONCLUSIONS The high copies amplification on 8q, the formation of isochromosome 8, non-reciprocal translocation of partial 8q to 4q, and loss of 8p occurred at the same time and are the characteristic chromosomal aberrations of the two cell clones. The chromosome 8p, especially 8p23, might harbor some novel genes related to the HCC metastasis.
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Affiliation(s)
- Jiong Yang
- Liver Cancer Institute & Zhongshan Hospital of Fudan University, 136 Yi Xue Yuan Road, 200032, Shanghai, China
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Tabor MP, Braakhuis BJM, van der Wal JE, van Diest PJ, Leemans CR, Brakenhoff RH, Kummer JA. Comparative molecular and histological grading of epithelial dysplasia of the oral cavity and the oropharynx. J Pathol 2003; 199:354-60. [PMID: 12579537 DOI: 10.1002/path.1285] [Citation(s) in RCA: 96] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Histological grading of epithelial dysplasia in the oral cavity and oropharynx is used to predict the risk for cancer and to determine the treatment strategy. This grading, however, is subjective and not well reproducible. Recent publications have shown that molecular markers are promising in cancer risk assessment. The aim of the present study was to compare classical histological and molecular grading and to relate these to the proliferation rate by quantitative assessment of Ki-67 staining. Forty-three samples were analysed from the margins of patients who had undergone resection of their squamous cell carcinoma in the oral cavity/oropharynx. Three experienced pathologists performed the histological grading. With the consensus score, 12 samples were classified as normal and 31 as dysplastic (21 mild, six moderate, and four severe). Loss of heterozygosity (LOH) was assessed in the same samples with 15 microsatellite markers at chromosomes 3p, 9p, 17p, 8p, 13q, and 18q, and was present in 28 of the 43 samples. Twenty-four of the 28 cases (86%) with LOH were classified as dysplastic and four as normal. All ten samples with moderate and severe dysplasia and 14 of 21 samples with mild dysplasia contained LOH. In four of 12 biopsies classified as normal, LOH was found. A very striking and significant difference of the Ki-67 index was observed between LOH-positive and LOH-negative cases, 36.6 +/- 11.1% versus 19.4 +/- 2.8% positive cells, respectively. In mild dysplasia, 13 of 14 lesions containing LOH had a higher Ki-67 index than all seven lesions without LOH. Thus, in the oral cavity/oropharynx, LOH is more frequently found in the histologically higher-grade lesions (moderate dysplasia or worse) and in the lower grade lesions when a high proliferation rate is present. Assessment of proliferation with Ki-67 is a better surrogate for LOH than histological grading.
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Affiliation(s)
- Maarten P Tabor
- Department of Otolaryngology/Head and Neck Surgery, VU University Medical Center, PO Box 7057, 1007 MB Amsterdam, The Netherlands
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Tabor MP, Brakenhoff RH, Ruijter-Schippers HJ, Van Der Wal JE, Snow GB, Leemans CR, Braakhuis BJM. Multiple head and neck tumors frequently originate from a single preneoplastic lesion. THE AMERICAN JOURNAL OF PATHOLOGY 2002; 161:1051-60. [PMID: 12213734 PMCID: PMC1867244 DOI: 10.1016/s0002-9440(10)64266-6] [Citation(s) in RCA: 155] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Accepted: 06/04/2002] [Indexed: 11/19/2022]
Abstract
The development of second primary tumors has a negative impact on the prognosis of head and neck squamous cell carcinoma. Previously, we detected genetically altered and tumor-related mucosal lesions in the resection margins in 25% of unselected head and neck squamous cell carcinoma patients (Tabor MP, Brakenhoff RH, van Houten VMM, Kummer JA, Snel MHJ, Snijders PJF, Snow GB, Leemans CR, Braakhuis BJM: Persistence of genetically altered fields in head and neck cancer patients: biological and clinical implications. Clin Cancer Res 2001, 7: 1523-1532). The aim of this study was to determine whether first and second primary tumors are clonally related and originate from a single genetically altered field. From 10 patients we analyzed the first tumor of the oral cavity or oropharynx, the >3-cm remote second primary tumor, and the mucosa from the tumor-free margins from both resection specimens. We compared TP53 mutations and loss of heterozygosity profiles using 19 microsatellite markers at chromosomes 3p, 9p, 13q, and 17p. In all patients, genetically altered mucosal lesions were detected in at least one resection margin from both first and second primary tumor. Evidence for a common clonal origin of the first tumor, second primary tumor, and the intervening mucosa was found for at least 6 of 10 patients. Our results indicate that a proportion of multiple primary tumors have developed within a single preneoplastic field. Based on different etiology and clinical consequences, we propose that independent second primary tumors should be distinguished from second field tumors, that arise from the same genetically altered field the first tumor has developed from.
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Affiliation(s)
- Maarten P Tabor
- Department of Otolaryngology/Head and Neck Surgery, VU University Medical Center, Amsterdam, The Netherlands
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