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Deshpande M, Meshram M, Paul P, Reche A, Bhowate RR, Deshpande A, Borkar S. Assessment of Cancer Patients' Relatives' Knowledge, Perception, and Attitude Toward Cancer. Cureus 2023; 15:e43457. [PMID: 37711954 PMCID: PMC10498802 DOI: 10.7759/cureus.43457] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2023] [Accepted: 08/14/2023] [Indexed: 09/16/2023] Open
Abstract
Background Assessment of cancer patients' relatives' knowledge, perception, and attitude regarding cancer. To spread awareness about oral cancer in areas with a high prevalence of cancer, aid in its prevention, and accelerate the treatment to facilitate early-stage disease elimination and improve prognosis. Material and methods A cross-sectional study conducted at a hospital was done, where 23 questions were posed to the relatives of the patients admitted to the hospital. The questions were formulated to assess the knowledge of relatives regarding cancer, their perception, and their attitude toward the decision-making and treatment protocols. The questions also included information about the patient's habits and associated problems with it. A total of 400 relatives participated in the study, where all participants were adequately informed beforehand, and their written consent was taken before proceeding with the questions. All the questions were formulated in the native language that they could easily understand. Result The study found that participants had limited knowledge about the causes, treatment, prevention, and recurrence of oral cancer. Additionally, the family members were unsupportive of therapy and delayed seeking medical care. Conclusion It is crucial to raise awareness about oral cancer and inform individuals about available treatments, government programs, and counseling services to aid them in decision-making.
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Affiliation(s)
- Mihika Deshpande
- Department of Public Health Dentistry, Sharad Pawar Dental College and Hospital, Datta Meghe Institute of Higher Education and Research, Wardha, IND
| | - Mrunal Meshram
- Department of Oral Medicine and Radiology, Sharad Pawar Dental College and Hospital, Datta Meghe Institute of Higher Education and Research, Wardha, IND
| | - Priyanka Paul
- Department of Public Health Dentistry, Sharad Pawar Dental College and Hospital, Datta Meghe Institute of Higher Education and Research, Wardha, IND
| | - Amit Reche
- Department of Public Health Dentistry, Sharad Pawar Dental College and Hospital, Datta Meghe Institute of Higher Education and Research, Wardha, IND
| | - Rahul R Bhowate
- Department of Oral Medicine and Radiology, Sharad Pawar Dental College and Hospital, Datta Meghe Institute of Higher Education and Research, Wardha, IND
| | - Anvika Deshpande
- Department of Public Health Dentistry, Sharad Pawar Dental College and Hospital, Datta Meghe Institute of Higher Education and Research, Wardha, IND
| | - Shreyash Borkar
- Department of Public Health Dentistry, Sharad Pawar Dental College and Hospital, Datta Meghe Institute of Higher Education and Research, Wardha, IND
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Leite ICG, Koifman S. Revisão dos fatores de risco para o câncer de boca e faringe. REVISTA BRASILEIRA DE CANCEROLOGIA 2022. [DOI: 10.32635/2176-9745.rbc.1998v44n4.2827] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
O presente artigo realizou breve análise de perfil epidemiológico de tumores de boca e faringe no Brasil e no mundo, bem como uma revisão da literatura pertinente a seus fatores de risco. Sua incidência, geralmente, varia entre 2% a 30% do total dos novos casos de câncer no mundo, e é fortemente influenciada pela localização geográfica. No Brasil, é a sexta localização anatômica mais comum nos Registros de Base Populacional entre os homens, sendo que a localização envolvendo a língua corresponde a 40% do total de casos. Os principais fatores de risco são o tabaco, o álcool e a interação entre ambos, que exibem forte efeito multiplicativo sobre o risco. A quantidade consumida e o tempo de exposição a estes dois fatores exibem, comumente, gradiente crescente de risco para o câncer. Elementos da dieta são considerados fatores de proteção, especialmente oβ-caroteno, enquanto estados de carência nutricional são comumente percebidos entre os casos. Condições de precária saúde bucal são achados comuns entre os casos de câncer de boca e faringe. As recentes linhas de pesquisa em patogênese e prevenção do câncer de boca e faringe têm estudado a contribuição viral e genética. O comprometimento de grupos etários mais jovens e de mulheres provavelmente deve-se à universalização dos fatores de risco, levando a esta modificação do perfil epidemiológico.
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Early-onset oral cancer as a clinical entity: aetiology and pathogenesis. Int J Oral Maxillofac Surg 2022; 51:1497-1509. [PMID: 35487818 DOI: 10.1016/j.ijom.2022.04.005] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2021] [Revised: 01/24/2022] [Accepted: 04/04/2022] [Indexed: 12/24/2022]
Abstract
Oral squamous cell carcinoma (OSCC) is one of the most important medical and socio-economic problems in many of the developed countries worldwide, due to the high mortality. The incidence of OSCC among individuals under 45 years of age is growing every year; however, the aetiological factors and pathogenetic mechanisms are poorly understood. This review summarizes the available information regarding clinicopathological features, extrinsic and intrinsic aetiological factors, and the molecular and immune landscape of early-onset OSCC. This cancer shows high recurrence rates and is not associated with the aetiological factors specific to adult-onset OSCC. Young adults with OSCC are not infected with human papillomavirus and rarely consume alcohol or tobacco, but more frequently use smokeless tobacco. Data from single studies indicate the hereditary nature of early-onset OSCC: the KIR2DL1+-HLA-C2+ genotype and MMP-1 2 G allele are frequently detected in young patients. Early-onset OSCC shows specific genetic, epigenetic, transcriptomic, and proteomic changes. The tumour microenvironment in early-onset OSCC is tolerogenic rather than immunogenic. All of the data suggest that OSCC in young patients is a separate clinical entity with a specific aetiology and pathogenesis. Further studies are needed to reveal the causes and molecular targets of early-onset OSCC for the development of preventive and therapeutic strategies.
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Uddin M, Bowen A, Betts G, Sainuddin S. Synchronous oral cavity malignancy in identical twins-unusual coincidence of similarities. Int J Oral Maxillofac Surg 2021; 51:621-624. [PMID: 34481736 DOI: 10.1016/j.ijom.2021.08.022] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2020] [Revised: 06/25/2021] [Accepted: 08/20/2021] [Indexed: 11/18/2022]
Abstract
The multifactorial nature of head and neck squamous cell carcinoma (HNSCC) has led to increased efforts in establishing various risk factors. Well-known environmental risk factors for HNSCC include tobacco use, heavy alcohol consumption, immunosuppression, and more recently human papillomavirus infection. Familial clustering has been observed in cancers occurring at other sites, but not so much with oral squamous cell carcinoma (OSCC) without exposure to shared environmental risk factors. An unusual case of identical twins who presented with OSCC involving an identical site and exhibiting similar histological features is reported here. The two patients underwent identical surgery with curative intent, culminating in good outcomes. It appears that no other cases of identical twins with a similar presentation in time, anatomical site, and histopathology have been reported in the literature.
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Affiliation(s)
- M Uddin
- Department of Oral and Maxillofacial Surgery, Manchester Royal Infirmary, Manchester, UK.
| | - A Bowen
- Department of Oral and Maxillofacial Surgery, Manchester Royal Infirmary, Manchester, UK.
| | - G Betts
- Department of Adult Histopathology, Manchester Royal Infirmary, Manchester, UK.
| | - S Sainuddin
- Department of Oral and Maxillofacial Surgery, Manchester Royal Infirmary, Manchester, UK.
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5
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Deshmukh P, Nair P, Trivedi A, Thomas J. Oral cancer and genomics. JOURNAL OF THE INTERNATIONAL CLINICAL DENTAL RESEARCH ORGANIZATION 2021. [DOI: 10.4103/jicdro.jicdro_23_21] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022] Open
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6
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Li F, Xu X, Xuan C, Chen WT. Association between interleukin-10 gene polymorphisms and risk of oral carcinoma: A meta-analysis. Histol Histopathol 2020; 35:1329-1336. [PMID: 33119124 DOI: 10.14670/hh-18-275] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
BACKGROUND The single nucleotide polymorphisms (SNPs) of Interleukin-10 (IL-10) gene have been linked with the risk of oral carcinoma (OC) in a relatively small sample size. Our study aims to investigate the pooled associations by conducting a meta-analysis of published studies. METHODS PubMed, Web of Science and Google Scholar databases were searched to identify eligible studies published in English before October 2019. The odds ratio (OR) with a 95% confidence interval (CI) was used to assess association. The publication bias was detected by Begg's test. Sensitivity and cumulative analyses were performed to evaluate the stability of crude results. RESULTS The meta-analysis involved eight studies. Significant associations were certified between IL-10 gene -1082A/G polymorphism and susceptibility of OC for A vs. G (OR=1.817, 95% CI: 1.481-2.230), AA vs. GG (OR=3.436, 95% CI: 2.281-5.175), dominant genetic model (OR=2.913, 95% CI: 1.939-4.376), and recessive genetic model (OR=1.886, 95% CI: 1.372-2.594) in overall population, East Asians and South Asians. In addition, the significant association between -592A/C polymorphism of the gene and susceptibility of OC were detected in South Asians. CONCLUSIONS The meta-analysis results support that the IL-10 gene -1082G allele is a risk factor for OC in East Asians and South Asians, and IL-10 gene -592C allele is a protective factor for the disease.
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Affiliation(s)
- Fan Li
- Department of Oral Maxillofacial Head and Neck Oncology, Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China.,Shanghai Key Laboratory of Stomatology, Shanghai Research Institute of Stomatology, National Clinical Research Center of Stomatology, Shanghai, China
| | - Xing Xu
- Department of Oral Maxillofacial Head and Neck Oncology, Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China.,Shanghai Key Laboratory of Stomatology, Shanghai Research Institute of Stomatology, National Clinical Research Center of Stomatology, Shanghai, China
| | - Chao Xuan
- Department of Clinical Laboratory, The Affiliated Hospital of Qingdao University, Qingdao, China.
| | - Wan-Tao Chen
- Shanghai Key Laboratory of Stomatology, Shanghai Research Institute of Stomatology, National Clinical Research Center of Stomatology, Shanghai, China.,Department of Oral Maxillofacial Head and Neck Oncology, Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China.
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7
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Mroueh R, Tanskanen T, Haapaniemi A, Salo T, Malila N, Mäkitie A, Pitkäniemi J. Familial cancer risk in family members and spouses of patients with early-onset head and neck cancer. Head Neck 2020; 42:2524-2532. [PMID: 32472619 DOI: 10.1002/hed.26282] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2019] [Revised: 03/30/2020] [Accepted: 05/12/2020] [Indexed: 01/23/2023] Open
Abstract
BACKGROUND Reported patterns of familial aggregation of head and neck cancer (HNC) vary greatly, with many studies hampered by the limited number of subjects. METHODS Altogether 923 early-onset (≤40 years old) HNC probands, their first-degree relatives, spouses, and siblings' offspring were ascertained. Cumulative risk and standardized incidence ratios (SIRs) were estimated. RESULTS Of all early-onset HNC families, only 21 (2.3%) had familial HNC cancers at any age and less than five familial early onset HNC cancers among first-degree relatives. The cumulative risk of HNC for siblings by age 60 (0.52%) was at population level (0.33%). No increased familial risk of early-onset HNC could be discerned in family members (SIR 2.68, 95% CI 0.32-9.68 for first-degree relatives). CONCLUSIONS Our study indicates that the cumulative and relative familial risk of early-onset HNC is modest in the Finnish population and, at most, only a minor proportion of early-onset HNCs are due solely to inherited genetic mutations.
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Affiliation(s)
- Rayan Mroueh
- Department of Otorhinolaryngology-Head and Neck Surgery, University of Helsinki and HUS Helsinki University Hospital, Helsinki, Finland
| | - Tomas Tanskanen
- Finnish Cancer Registry, Institute for Statistical and Epidemiological Cancer and Research, Helsinki, Finland
| | - Aaro Haapaniemi
- Department of Otorhinolaryngology-Head and Neck Surgery, University of Helsinki and HUS Helsinki University Hospital, Helsinki, Finland
| | - Tuula Salo
- Cancer and Translational Medicine Unit, University of Oulu, Oulu, Finland.,Medical Research Unit, Oral and Maxillofacial Diseases, University of Helsinki and Haartman Institute, Helsinki, Finland
| | - Nea Malila
- Finnish Cancer Registry, Institute for Statistical and Epidemiological Cancer and Research, Helsinki, Finland
| | - Antti Mäkitie
- Department of Otorhinolaryngology-Head and Neck Surgery, University of Helsinki and HUS Helsinki University Hospital, Helsinki, Finland.,Research Program in Systems Oncology, Faculty of Medicine, University of Helsinki, Helsinki, Finland.,Division of Ear, Nose and Throat Diseases, Department of Clinical Sciences, Intervention and Technology, Karolinska Institutet and Karolinska Hospital, Stockholm, Sweden
| | - Janne Pitkäniemi
- Finnish Cancer Registry, Institute for Statistical and Epidemiological Cancer and Research, Helsinki, Finland.,Faculty of Social Sciences, University of Tampere, Tampere, Finland.,Department of Public Health, School of Medicine, University of Helsinki, Helsinki, Finland
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Baba ND. [Cancer of the oral cavity in three brothers of the whole blood in Mauritania]. Pan Afr Med J 2016; 25:156. [PMID: 28292118 PMCID: PMC5326065 DOI: 10.11604/pamj.2016.25.156.10377] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2016] [Accepted: 08/03/2016] [Indexed: 11/12/2022] Open
Abstract
Les facteurs de risque majeurs pour les cancers de la cavité orale sont la consommation d'alcool et le tabac mais une composante héréditaire a également été évoquée. L’observation que nous vous présentons ci-dessous a pour objectif d’illustrer cette composante parmi les autres facteurs de risque plus connus. C’est l’histoire de trois frères germains ayant présenté chacun un cancer de la cavité orale avec une évolution très rapide en moins d’une année pour chacun d’entre eux. En plus du facteur familial, les facteurs de risque retrouvés chez ces patients étaient: le tabagisme, une mauvaise hygiène bucco-dentaire, une alimentation pauvre en légumes et en fruits. Le risque familial des cancers de la cavité orale était pendant très longtemps un sujet controversé mais plusieurs études récentes ont suggérées l’existence de ce risque ce qui concorde avec notre observation chez ces trois frères. Ces études ont montré aussi que bien que la composante héréditaire pour les carcinomes des voies aéro-digestives supérieures semble probable, il est important que les membres de la famille à risque comprennent que leur vulnérabilité à ces tumeurs peut être considérablement réduite par l'arrêt du tabac, la modération de la consommation d'alcool et la consommation fréquente de fruits et légumes crus. Des études plus poussées devront être réalisées dans notre pays pour préciser la place respective de ces différents facteurs de risque pour ce cancer. En attendant, la prévention et le diagnostic précoce restent les moyens les plus appropriées pour la lutte contre ce type de cancers.
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Affiliation(s)
- Nacer Dine Baba
- Service Anatomie Pathologique CHN de Nouakchott, BP 1164 Nouakchott Mauritanie
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Bertonha FB, Barros Filho MDC, Kuasne H, Dos Reis PP, da Costa Prando E, Muñoz JJAM, Roffé M, Hajj GNM, Kowalski LP, Rainho CA, Rogatto SR. PHF21B as a candidate tumor suppressor gene in head and neck squamous cell carcinomas. Mol Oncol 2015; 9:450-62. [PMID: 25454821 PMCID: PMC5528662 DOI: 10.1016/j.molonc.2014.09.009] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2014] [Revised: 09/22/2014] [Accepted: 09/23/2014] [Indexed: 01/12/2023] Open
Abstract
A significant association between DNA losses on 22q13.31 and head and neck squamous cell carcinomas (HNSCC) was previously reported by our group. Our data indicated that PHF21B gene, mapped on 22q13.31 and encoding a protein with function of chromatin-mediated transcriptional regulation, might be a putative tumor suppressor gene. To test this hypothesis, gene copy number was assessed in 75 HNSCC and 49 matched peripheral blood samples. PHF21B losses were detected in 43 tumors and were significantly associated with patients with familial history of cancer (P < 0.0001); i.e., 36/43 cases showed a positive family history of cancer and 22/36 had first-degree relatives with cancer (P = 0.049). In attempt to investigate other mechanisms for PHF21B loss of function, DNA sequencing was performed and no mutations were detected. We next evaluated the gene expression levels after inhibition of DNA methylation in nine HNSCC and breast carcinoma cell lines. Additionally, PHF21B expression levels were evaluated in colon cancer HCT116 cells as well as in its counterpart DKO (double knockout of DNMT1 and DNMT3B). The higher expression levels of PHF21B gene detected in DKO cells were inversely correlated with the DNA methylation. Further, DNA methylation in the specific promoter-associated CpG Island was investigated. Interestingly, gene hypermethylation was detected in 13/37 tumors: 5/13 HNSCC cases had family history of cancer in first-degree relatives and 8/13 showed both, DNA methylation and PHF21B losses in the tumor sample. One patient had PHF21B loss in the peripheral blood cells and PHF21B methylation in the tumor sample. Additionally, overexpression of PHF21B in cell lines drastically reduces clonogenic and migratory abilities. These data suggest that PHF21B is a novel tumor suppressor gene that can be inactivated by genetic and epigenetic mechanisms in the human cancer.
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MESH Headings
- Adult
- Aged
- Aged, 80 and over
- Carcinoma, Squamous Cell/genetics
- Carcinoma, Squamous Cell/metabolism
- Carcinoma, Squamous Cell/pathology
- Cell Line, Tumor
- Chromosomes, Human, Pair 22/genetics
- Chromosomes, Human, Pair 22/metabolism
- DNA Methylation
- DNA, Neoplasm/genetics
- DNA, Neoplasm/metabolism
- Epigenesis, Genetic
- Female
- Gene Expression Regulation
- Gene Knockdown Techniques
- Head and Neck Neoplasms/genetics
- Head and Neck Neoplasms/metabolism
- Head and Neck Neoplasms/pathology
- Humans
- Male
- Middle Aged
- Retrospective Studies
- Tumor Suppressor Proteins/biosynthesis
- Tumor Suppressor Proteins/genetics
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Affiliation(s)
- Fernanda Bernardi Bertonha
- International Center of Research and Training (CIPE), A. C. Camargo Cancer Center, Sao Paulo, SP 01.508-010, Brazil.
| | | | - Hellen Kuasne
- International Center of Research and Training (CIPE), A. C. Camargo Cancer Center, Sao Paulo, SP 01.508-010, Brazil.
| | - Patricia Pintor Dos Reis
- Department of Surgery and Orthopedics, Faculty of Medicine, UNESP - Sao Paulo State University, Botucatu, SP 18.618-970, Brazil.
| | - Erika da Costa Prando
- Department of Genetics, Institute of Biosciences, UNESP - Sao Paulo State University, Botucatu, SP 18.618-970, Brazil.
| | | | - Martín Roffé
- International Center of Research and Training (CIPE), A. C. Camargo Cancer Center, Sao Paulo, SP 01.508-010, Brazil.
| | - Glaucia Noeli Maroso Hajj
- International Center of Research and Training (CIPE), A. C. Camargo Cancer Center, Sao Paulo, SP 01.508-010, Brazil.
| | - Luiz Paulo Kowalski
- Department of Head and Neck Surgery and Otorhinolaryngology, A. C. Camargo Cancer Center, Sao Paulo, SP 01.508-010, Brazil; National Institute of Science and Technology in Oncogenomics (INCITO), Sao Paulo, SP 01.509-010, Brazil.
| | - Claudia Aparecida Rainho
- Department of Genetics, Institute of Biosciences, UNESP - Sao Paulo State University, Botucatu, SP 18.618-970, Brazil.
| | - Silvia Regina Rogatto
- International Center of Research and Training (CIPE), A. C. Camargo Cancer Center, Sao Paulo, SP 01.508-010, Brazil; Department of Head and Neck Surgery and Otorhinolaryngology, A. C. Camargo Cancer Center, Sao Paulo, SP 01.508-010, Brazil; Department of Urology, Faculty of Medicine, UNESP - Sao Paulo State University, Botucatu, SP 18.618-970, Brazil.
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Okumu SB, Chindia ML, Gathece LW, Dimba EA, Odhiambo W. Clinical features and types of paediatric orofacial malignant neoplasms at two hospitals in Nairobi, Kenya. J Craniomaxillofac Surg 2012; 40:e8-14. [DOI: 10.1016/j.jcms.2011.01.020] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2010] [Revised: 01/11/2011] [Accepted: 01/27/2011] [Indexed: 11/26/2022] Open
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12
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da Silva SD, Ferlito A, Takes RP, Brakenhoff RH, Valentin MD, Woolgar JA, Bradford CR, Rodrigo JP, Rinaldo A, Hier MP, Kowalski LP. Advances and applications of oral cancer basic research. Oral Oncol 2011; 47:783-91. [PMID: 21802978 DOI: 10.1016/j.oraloncology.2011.07.004] [Citation(s) in RCA: 104] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2011] [Revised: 07/01/2011] [Accepted: 07/05/2011] [Indexed: 12/19/2022]
Abstract
Cancer of the oral cavity accounts for almost 3% of cancer cases in the world. The incidence varies widely reflecting geographic differences in exposure to risk factors. The recent rise in younger age groups and females seen in many countries is of particular concern. Treatment and management of complications, locoregional recurrence and further primary tumors result in high morbidity and mortality especially when the disease is advanced stage at initial diagnosis. Progress in cancer research has provided abundant new knowledge about cellular processes and molecular biology underlying oral carcinogenesis and tumor progression. The present review attempts to summarize the current most widely-used research approaches and their application in the prevention, diagnosis, effective treatment, and improved outcome of oral cancer.
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Affiliation(s)
- Sabrina Daniela da Silva
- Department of Otolaryngology-Head and Neck Surgery, Jewish General Hospital, McGill University, Montreal, Canada
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Tanaka T, Tanaka M, Tanaka T. Oral carcinogenesis and oral cancer chemoprevention: a review. PATHOLOGY RESEARCH INTERNATIONAL 2011; 2011:431246. [PMID: 21660266 PMCID: PMC3108384 DOI: 10.4061/2011/431246] [Citation(s) in RCA: 70] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/27/2010] [Accepted: 03/19/2011] [Indexed: 12/12/2022]
Abstract
Oral cancer is one of the major global threats to public health. The development of oral cancer is a tobacco-related multistep and multifocal process involving field cancerization and carcinogenesis. The rationale for molecular-targeted prevention of oral cancer is promising. Biomarkers of genomic instability, including aneuploidy and allelic imbalance, are possible to measure the cancer risk of oral premalignancies. Understanding of the biology of oral carcinogenesis will yield important advances for detecting high-risk patients, monitoring preventive interventions, and assessing cancer risk and pharmacogenomics. In addition, novel chemopreventive agents based on molecular mechanisms and targets against oral cancers will be derived from studies using appropriate animal carcinogenesis models. New approaches, such as molecular-targeted agents and agent combinations in high-risk oral individuals, are undoubtedly needed to reduce the devastating worldwide consequences of oral malignancy.
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Affiliation(s)
- Takuji Tanaka
- Director TCI-CaRP, 5-1-2 Minami-Uzura, Gifu City, Gifu 500-8285, Japan
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Tanaka T, Ishigamori R. Understanding carcinogenesis for fighting oral cancer. JOURNAL OF ONCOLOGY 2011; 2011:603740. [PMID: 21772845 PMCID: PMC3136173 DOI: 10.1155/2011/603740] [Citation(s) in RCA: 83] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/13/2010] [Revised: 10/27/2010] [Accepted: 03/14/2011] [Indexed: 01/09/2023]
Abstract
Oral cancer is one of the major global threats to public health. Oral cancer development is a tobacco-related multistep and multifocal process involving field cancerization and carcinogenesis. The rationale for molecular-targeted prevention of oral cancer is promising. Biomarkers of genomic instability, including aneuploidy and allelic imbalance, are able to measure the cancer risk of oral premalignancies. Understanding of the biology of oral carcinogenesis will give us important advances for detecting high-risk patients, monitoring preventive interventions, assessing cancer risk, and pharmacogenomics. In addition, novel chemopreventive agents based on molecular mechanisms and targets against oral cancers will be derived from research using appropriate animal carcinogenesis models. New approaches, such as interventions with molecular-targeted agents and agent combinations in high-risk oral individuals, are undoubtedly needed to reduce the devastating worldwide consequences of oral malignancy.
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Affiliation(s)
- Takuji Tanaka
- TCI-CaRP, 5-1-2 Minami-uzura, Gifu City, Gifu 500-8285, Japan
- Oncologic Pathology, Kanazawa Medical University, 1-1 Daigaku, Uchinada, Shikawa 920-0293, Japan
| | - Rikako Ishigamori
- Division of Cancer Development System, Carcinogenesis Research Group, National Cancer Center Research Institute, Chuo-ku, Tokyo 104-0045, Japan
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15
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Rasse M. [Surgical treatment options for squamous cell carcinoma of the oral cavity]. Wien Med Wochenschr 2008; 158:243-8. [PMID: 18560949 DOI: 10.1007/s10354-008-0528-9] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2008] [Accepted: 04/14/2008] [Indexed: 10/21/2022]
Abstract
The squamous cell carcinoma of the oral cavity comprises 3% of all new cancer cases. 10% have a hereditary component. Smokers stand at a 3-fold higher risk with alcohol as an additive factor. 6 to 10 independent genetic events are expected to take place until invasive carcinoma occurs. Chromosomal deletion may also be detected in premalignant lesions. Staging is performed with inspection including endoscopy, CT- and MR-Scans and biopsy for the primary tumour and chest-X-ray, CT, Ultrasound and Scintigraphy for the N and M stage routinely. Therapeutic options that are proven best are radiation or/and surgery for T1 and T2 stages with a 5-year survival rate between 80% and 100%. Multimodal therapies, also including chemotherapy for higher stages result in 5-year survival rates between 55% and 62%. Since recurrence and metastasis have very poor prognosis sufficient and radical primary therapy is crucial. Palliative chemotherapy may be applied for functional improvement and pain release without statistical prove for increased survival rates.
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Affiliation(s)
- Michael Rasse
- Klinische Abteilung für Mund-, Kiefer- und Gesichtschirurgie, Medizinische Universität Innsbruck, Innsbruck, Austria.
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16
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Báez A. Genetic and environmental factors in head and neck cancer genesis. JOURNAL OF ENVIRONMENTAL SCIENCE AND HEALTH. PART C, ENVIRONMENTAL CARCINOGENESIS & ECOTOXICOLOGY REVIEWS 2008; 26:174-200. [PMID: 18569329 DOI: 10.1080/10590500802129431] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
Abstract
Head and neck squamous cell carcinoma (HNSCC) include squamous cell carcinomas of the oral cavity, pharynx, and larynx. Epidemiologic data suggest that the etiology and pathogenesis of HNSCC are influenced by environmental and lifestyle-related factors, such as tobacco use, ethanol consumption, papilloma virus infection, dietary factors and exposure to toxic substances. DNA repair systems and carcinogen-metabolizing enzymes can increase the risk for HNSCC but no definite causal mechanism has been demonstrated. There are several well-characterized entities that are associated with risk and prognosis of head and neck cancer, including Lynch-II syndrome, Bloom syndrome, Fanconi's anemia, xeroderma pigmentosum, ataxia telangiectasia, and Li-Fraumeni syndrome. This review aims to present the current status in our understanding of HNSCC and highlight controversies relating to the role of several factors in the genesis of the cancer.
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Affiliation(s)
- Adriana Báez
- Departments of Pharmacology and Otolaryngology, School of Medicine, University of Puerto Rico, San Juan, Puerto Rico 00936-5067, USA.
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Garavello W, Foschi R, Talamini R, La Vecchia C, Rossi M, Dal Maso L, Tavani A, Levi F, Barzan L, Ramazzotti V, Franceschi S, Negri E. Family history and the risk of oral and pharyngeal cancer. Int J Cancer 2008; 122:1827-31. [PMID: 18076043 DOI: 10.1002/ijc.23199] [Citation(s) in RCA: 46] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
Scanty data are available on familial risk in oral and pharyngeal cancer. The relationship between oral and pharyngeal cancer and family history of cancer in first-degree relatives was investigated using data from a multicentric case-control study conducted in Italy and Switzerland between 1992 and 2005 on 956 cases aged less than 79 years, with histologically confirmed incident oral and pharyngeal cancer, and 2362 controls admitted to hospital for acute, nonneoplastic conditions. Logistic regression models conditioned on sex, age, study centre, and including terms for education, tobacco smoking, alcohol drinking, and number of siblings were used to estimate the odds ratios (OR) of oral and pharyngeal cancer. The multivariate ORs were similar for a family history of oral and pharyngeal cancer (2.6, 95% confidence interval, CI, 1.5-4.5) and laryngeal cancer (3.8, 95% CI, 2.0-7.2). The OR was 3.1 (95% CI, 2.0-4.8) for oral and pharyngeal cancer and laryngeal cancer combined. The OR was 7.1 (95% CI, 1.3-37.2) for subjects with 2 or more first-degree relatives with oral and pharyngeal/laryngeal cancers. Significant increases in risk were also observed for a family history of melanoma (OR = 5.8; 95% CI, 1.3-26.4) and lung cancer (OR = 1.4; 95% CI, 1.0-2.0). Compared to subjects without family history, nonsmokers, and non or moderate drinkers, the OR was 42.6 for current smokers, heavy drinkers with family history. History of oral and pharyngeal cancer and laryngeal cancer is a strong determinant of oral and pharyngeal cancer risk, independent from tobacco and alcohol.
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Anaya-Saavedra G, Ramírez-Amador V, Irigoyen-Camacho ME, García-Cuellar CM, Guido-Jiménez M, Méndez-Martínez R, García-Carrancá A. High association of human papillomavirus infection with oral cancer: a case-control study. Arch Med Res 2007; 39:189-97. [PMID: 18164962 DOI: 10.1016/j.arcmed.2007.08.003] [Citation(s) in RCA: 90] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2007] [Accepted: 08/08/2007] [Indexed: 12/23/2022]
Abstract
BACKGROUND The aim of the present study was to determine the association of high-risk human papillomavirus (HR-HPV) in Mexican individuals with oral squamous cell carcinoma (OSCC) and their association with various risk factors. METHODS We designed a matched case-control study. Cases were individuals with newly diagnosed OSCC, age- and sex-matched with controls (1:4). Demographic and clinical data were obtained; also a self-administered questionnaire about sexual behavior was included. DNA from oral brushing was purified to amplify HPV-DNA through MY09/MY11 and GP5+/GP6+ primers and subsequently subjected to sequencing. Conditional regression models were built to calculate odds ratios (ORs) and 95% confidence intervals (CI). RESULTS Sixty two cases and 248 controls (53.2% males), median age 62 years (Q1-Q3=54-72 years) were included. HPV prevalence was 43.5% in cases and 17.3% in controls (HR-HPV: 37.1% cases, 9.7% controls). The most frequent types in cases were HPV-16 and HPV-18 (55.6 and 18.5%). The presence of HR-HPV was associated with OSCC (OR=6.2; 95% CI: 2.98-12.97) controlling for the most common risk factors. An interaction between smoking and drinking was detected, and family history of cancer was also significant (OR: 3.61; 95% CI=1.44-8.99). Early age at first sexual intercourse and large number of lifetime sexual partners showed an association with HR-HPV (p=0.019 and p=0.033, respectively). CONCLUSIONS Oral HR-HPV was strongly associated with OSCC, suggesting that HPV-16 and -18 are risk factors for oral cancer in Mexican patients. A significant association of tobacco and alcohol was confirmed. In addition, family history of cancer was associated with OSCC. The results underline the role of HPV in OSCC and its multifactorial etiology.
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Tsantoulis PK, Kastrinakis NG, Tourvas AD, Laskaris G, Gorgoulis VG. Advances in the biology of oral cancer. Oral Oncol 2007; 43:523-34. [PMID: 17258495 DOI: 10.1016/j.oraloncology.2006.11.010] [Citation(s) in RCA: 131] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2006] [Revised: 09/30/2006] [Accepted: 11/02/2006] [Indexed: 12/13/2022]
Abstract
The incidence of oral cancer remains high and is associated with many deaths in both Western and Asian countries. Several risk factors for the development of oral cancer are now well known, including smoking, drinking and consumption of smokeless tobacco products. Genetic predisposition to oral cancer has been found in certain cases but its components are not yet entirely clear. In accordance with the multi-step theory of carcinogenesis, the natural history of oral cancer seems to gradually evolve through transitional precursor lesions from normal epithelium to a full-blown metastatic phenotype. A number of genomic lesions accompany this transformation and a wealth of related results has appeared in recent literature and is being summarized here. Furthermore, several key genes have been implicated, especially well-known tumor suppressors like the cyclin-dependent kinase inhibitors, TP53 and RB1 and oncogenes like the cyclin family, EGFR and ras. Viral infections, particularly with oncogenic HPV subtypes and EBV, can have a tumorigenic effect on oral epithelia and their role is discussed, along with potential therapeutic interventions. A brief explanatory theoretical model of oral carcinogenesis is provided and potential avenues for further research are highlighted.
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Affiliation(s)
- P K Tsantoulis
- Molecular Carcinogenesis Group, Laboratory of Histology and Embryology, Medical School, University of Athens, Antaiou 53 Str., Lamprini, Ano Patissia, GR-11146 Athens, Greece
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Suárez C, Rodrigo JP, Ferlito A, Cabanillas R, Shaha AR, Rinaldo A. Tumours of familial origin in the head and neck. Oral Oncol 2006; 42:965-78. [PMID: 16857415 DOI: 10.1016/j.oraloncology.2006.03.002] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2006] [Accepted: 03/08/2006] [Indexed: 12/15/2022]
Abstract
Individuals with inherited cancer syndromes are at significant risk of developing both benign and malignant tumours as a result of a germline mutation in a specific tumour suppressor gene. Tumours of familial origin are a rare event in the head and neck but despite this, they deserve a growing interest. Familial paragangliomas are most of the time limited to the paraganglionar system, but also may be part of different syndromic associations. Since early detection of paragangliomas reduces the incidence of morbidity and mortality, genotypic analysis in the search of SDHB, SDHC and SDHD mutations in families of affected patients plays a front-line diagnostic role, leading to more efficient patient management. Multiple endocrine neoplasias type 1 are characterized by the simultaneous occurrence of at least two of the three main related endocrine tumours: parathyroid, enteropancreatic and anterior pituitary. These tumours arise from inactivating germline mutations in the MEN-1 gene. No clear correlation of MEN-1 genotype with genotype has emerged to date, and MEN-1 mutation testing in tumours is not used clinically because it have not implications for tumour staging. Multiple endocrine neoplasia type 2 is due to a germline mutation in the RET proto-oncogene. Hallmarks of MEN-2A (the commonest phenotypic variant) include medullary thyroid carcinoma, pheochromocytoma, and hyperparathyroidism. The most central clinical difference with MEN-1 is that the associated cancer can be prevented or cured by early thyroidectomy in mutation carriers. Individuals with neurofibomatosis type 1 present early in life with pigmentary abnormalities, skinfold freckling and iris hamartomas, as result of NF1 gene mutation. Neurofibromatosis 2 is caused by inactivating mutations of the NF2 gene, and is characterized by the development of nervous system tumours (mainly bilateral vestibular schwannomas), ocular abnormalities, and skin tumours. The molecular genetic basis of nasopharyngeal carcinomas remains unknown, but there is evidence for the linkage of these tumours to chromosome 3p. Finally, the high rate of p16 mutations in squamous cell carcinomas and the association of p16 with familial melanoma propose p16 as an ideal candidate gene predisposing to familial squamous cell carcinomas. The elucidation of the cellular processes affected by dysfunction in familial tumours of the head and neck may serve to identify potential targets for future therapeutic interventions.
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Affiliation(s)
- Carlos Suárez
- Department of Otolaryngology, Hospital Universitario Central de Asturias, Oviedo, Spain
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Tuncali D, Yavuz N, Terzioglu A, Aslan G. Squamous cell carcinoma of the lower lip: exact location match in siblings. Dermatol Surg 2005; 31:1732-3. [PMID: 16336901 DOI: 10.2310/6350.2005.31322] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
BACKGROUND In recent years, genetic contribution to the development of skin cancers is under the magnifying glass of several authors and is now regarded as the main initial etiology in carcinogenesis. OBJECTIVE Two siblings who had squamous cell carcinoma of the lower lip showing an exact location match are presented. PATIENTS They did not share common environmental factors, and there was no history of tobacco and/or alcohol abuse. CONCLUSIONS It would be scientifically deceptive to draw generous conclusions for the cases here, other than being a very interesting and unusual coincidence, because further evaluation could not be done to scientifically prove a possible genetic contribution.
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Affiliation(s)
- Dogan Tuncali
- Department of Plastic and Reconstructive Surgery, Ankara Training and Research Hospital, Turkey.
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22
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Squamous Cell Carcinoma of the Lower Lip. Dermatol Surg 2005. [DOI: 10.1097/00042728-200512000-00022] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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23
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Li X, Hemminki K. Familial upper aerodigestive tract cancers: incidence trends, familial clustering and subsequent cancers. Oral Oncol 2003; 39:232-9. [PMID: 12618195 DOI: 10.1016/s1368-8375(02)00091-x] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
Familial risks in upper aerodigestive tract cancer have been assessed mainly through case-control studies based on reported but not medically verified cancers in family members. The nationwide Swedish Family-Cancer Database was used to describe the incidence trends for all subsites of upper aerodigestive tract cancer and to calculate standardized incidence ratios (SIRs) and 95% confidence intervals (CIs) for the cancer in 0-66-year-old offspring by cancers in family members. Additionally, SIRs for second primary cancer after upper aerodigestive tract cancers were analysed. SIRs in offspring for all upper aerodigestive tract cancer were not significant when a parent presented with concordant cancer. The population attributable fraction of familial upper aerodigestive tract cancer was 0.43%. Risk for subsequent cancers in men and women after upper aerodigestive tract cancer were increased in smoking, alcohol and other life-style related sites and in skin cancer and non-Hodgkin's lymphoma.
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Affiliation(s)
- Xinjun Li
- Department of Biosciences at Novum, Karolinska Institute, 141 57 Huddinge, Sweden
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Yarbrough WG. The ARF-p16 gene locus in carcinogenesis and therapy of head and neck squamous cell carcinoma. Laryngoscope 2002; 112:2114-28. [PMID: 12461329 DOI: 10.1097/00005537-200212000-00002] [Citation(s) in RCA: 18] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
OBJECTIVES/HYPOTHESIS We have identified families with a high incidence of tumors including head and neck squamous cell carcinoma (HNSCC). The occurrence of melanoma in these kindreds suggested that the ARF-p16 gene may be involved in carcinogenesis. We wished to determine the gene defect associated with the familial predisposition to HNSCC and to determine whether restoration of the gene may have therapeutic benefit. STUDY DESIGN Translational molecular research. METHODS Molecular techniques were used to identify mutations of the ARF-p16 gene from the affected families and to test the activity of p16 and ARF mutants. In additional, HNSCC tumor tissue was analyzed to determine whether the wild-type p16 allele was lost or maintained. ARF-expressing adenoviruses were created, and their effect on HNSCC cell lines and normal head and neck epithelial cells was determined. RESULTS Mutation of the ARF-p16 gene was found in two families with predisposition to develop HNSCC. Independent mutations detected in the germline DNA of both families inactivated p16, but not ARF, and the inactive mutant p16 allele segregated with disease within both families. The wild-type p16 allele was lost in HNSCC tumor tissue from both families. The efficacy of ARF in treatment of HNSCC was found to depend on retention of p53 activity within HNSCC tumor cells. Remarkably, ARF expression was found to kill cells, depending on loss of retinoblastoma activity. Because loss of retinoblastoma activity is nearly universal in tumors, ARF killed tumor cells that retained p53, but ARF spared normal cells. CONCLUSIONS Our results support the recognition of a new clinical entity of familial head and neck cancer. We have shown that this syndrome is associated with inactivating mutations of the p16 gene that these mutations segregate with disease in two described families. Loss of the wild-type p16 allele in HNSCC tissue from both families strongly supports the role of the mutant p16 in carcinogenesis. We have also investigated the therapeutic utility of the alternate reading frame product of the p16 gene, ARF. The finding that ARF kills cells depending on loss of retinoblastoma activity and retention of p53 suggests that ARF may be effective in treatment of roughly 50% of head and neck cancers while sparing normal cells. Recognition of p16 mutations as an etiological factor in familial HNSCC provides an accessible tool for diagnosis of this syndrome. Clinical acceptance of familial head and neck cancer will ensure that patients are appropriately diagnosed and managed.
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Affiliation(s)
- Wendell G Yarbrough
- Department of Otolaryngology-Head and Neck Surgery, Lineberger Comprehensive Cancer Center, Chapel Hill, North Carolina 27599-7070, USA.
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Yu KK, Zanation AM, Moss JR, Yarbrough WG. Familial head and neck cancer: molecular analysis of a new clinical entity. Laryngoscope 2002; 112:1587-93. [PMID: 12352668 DOI: 10.1097/00005537-200209000-00010] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
OBJECTIVE The tumor suppressor gene p16 encodes a cyclin-dependent kinase inhibitor that normally inhibits cell proliferation by causing a G1 cell cycle arrest. The p16 gene is frequently mutated in a variety of somatic tumors, as well as in familial melanoma and familial pancreatic carcinoma. We identified a family with a high incidence of head and neck squamous cell carcinoma (HNSCC) and melanoma. Molecular analyses of the p16 gene locus in blood and tumor DNA from this family was performed to determine whether an association between germline p16 gene mutation and HNSCC exists. STUDY DESIGN Molecular pedigree analyses. METHODS Exon 2 of p16 was polymerase chain reaction amplified from blood, tumor, or nontumor DNA isolated from affected and unaffected members, then directly sequenced and compared with consensus p16 sequence. Cell cycle position of cells expressing wild-type or mutant p16 was determined by flow cytometry. RESULTS Molecular analyses revealed a nonfunctional germline point mutation within exon 2 of the p16 gene that encodes a mutant p16 protein substituting proline at amino acid position 87 for the wild-type arginine (p16R87P). Relative to wild-type p16, p16R87P lost ability to cause a growth arrest following ectopic expression. The mutant (p16R87P) allele segregated with cancer predisposition in tested family members, and analyses of HNSCC tumor tissues demonstrated universal loss of wild-type allele. CONCLUSIONS Significance of the mutant p16 (p16R87P) in HNSCC tumorigenesis is strongly suggested by its loss of cell cycle arrest activity and its retention in tumor tissue with simultaneous loss of the wild-type allele. Further, the germline p16 mutation segregated with cancer predisposition within the family. In aggregate, these data suggest that there is a direct causal relationship between the germline p16 mutation in this family and HNSCC tumorigenesis. Based on our observations, the spectrum of familial cancers associated with p16 mutations should include a new clinical entity, familial HNSCC.
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Affiliation(s)
- Kathy K Yu
- Department of Otolaryngology--Head and Neck Surgery, University of North Carolina at Chapel Hill, USA
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Brown LM, Gridley G, Diehl SR, Winn DM, Harty LC, Otero EB, Fraumeni JF, Hayes RB. Family cancer history and susceptibility to oral carcinoma in Puerto Rico. Cancer 2001; 92:2102-8. [PMID: 11596026 DOI: 10.1002/1097-0142(20011015)92:8<2102::aid-cncr1551>3.0.co;2-9] [Citation(s) in RCA: 30] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Abstract
BACKGROUND Use of alcohol and tobacco are the major risk factors for cancers of the oral cavity and pharynx in most of the world. A heritable component to oral carcinoma risk also has been suggested, although only limited data are available on familial aggregation of this disease. METHODS A population-based case-control study of 342 subjects with carcinomas of the oral cavity and pharynx (oral carcinoma) and 521 controls was conducted in Puerto Rico. The relation between family history of carcinomas of the oral cavity, the upper aerodigestive tract (UADT), and other selected sites with risk of oral carcinoma was explored using logistic regression modeling techniques. RESULTS Risk of oral carcinoma was elevated for subjects reporting a first-degree relative with carcinoma of the oral cavity (odds ratio [OR], 2.5; 95% confidence interval [CI], 0.8-8.0) or any UADT carcinoma (OR, 2.6; 95% CI, 1.4-4.8). The increased risk associated with family history of UADT carcinoma tended to be greatest for subjects with known risk factors (i.e., heavy consumption of alcohol and/or tobacco and infrequent intake of raw fruits and vegetables) and with oral carcinoma diagnoses at ages younger than 65 years. CONCLUSIONS These findings are consistent with a heritable component to oral carcinoma, although shared lifestyle risk factors may be partially involved.
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Affiliation(s)
- L M Brown
- Division of Cancer Epidemiology and Genetics, National Cancer Institute, National Institutes of Health, Bethesda, Maryland 20892-7244, USA.
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Prime SS, Thakker NS, Pring M, Guest PG, Paterson IC. A review of inherited cancer syndromes and their relevance to oral squamous cell carcinoma. Oral Oncol 2001; 37:1-16. [PMID: 11120478 DOI: 10.1016/s1368-8375(00)00055-5] [Citation(s) in RCA: 46] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
This paper examines the genetic defects associated with inherited cancer syndromes and their relevance to oral cancer. Tumour suppressor genes are now thought of as either gatekeepers or caretakers according to whether they control cell growth directly by inhibiting cell proliferation and/or promoting cell death (gatekeepers) or whether they maintain the integrity of the genome by DNA repair mechanisms (caretakers). In disorders such as xeroderma pigmentosum, ataxia telangiectasia, Bloom syndrome and Fanconi's anaemia, where there are defective caretaker genes, there is an increased incidence of second primary malignancies, including oral cancer. By contrast, with the exception of Li Fraumeni syndrome, abnormalities of gatekeeper genes do not predispose to oral cancer. Not only do Li Fraumeni patients develop second primary malignancies, but defects of the p53 pathway (p53 mutation, MDM2 over-expression, CDKN2A deletion) appear to be a ubiquitous feature of sporadic oral cancer as it occurs in the West. The findings suggest that genetic instability is of fundamental importance in the pathogenesis of oral cancer.
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Affiliation(s)
- S S Prime
- Department of Oral and Dental Science, University of Bristol, Lower Maudlin Street, BS1 2LY, Bristol, UK.
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Abstract
Oral squamous carcinogenesis is a multistep process in which multiple genetic events occur that alter the normal functions of oncogenes and tumour suppressor genes. This can result in increased production of growth factors or numbers of cell surface receptors, enhanced intracellular messenger messenger signalling, and/or increased production of transcription factors. In combination with the loss of tumour suppressor activity, this leads to a cell phenotype capable of increased cell proliferation, with loss of cell cohesion, and the ability to infiltrate local tissue and spread to distant sites. Recent advances in the understanding of the molecular control of these various pathways will allow more accurate diagnosis and assessment of prognosis, and might lead the way for more novel approaches to treatment and prevention.
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Affiliation(s)
- H K Williams
- Department of Oral Pathology, Birmingham Dental Hospital and School, UK.
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Moore S, Johnson N, Pierce A, Wilson D. The epidemiology of lip cancer: a review of global incidence and aetiology. Oral Dis 1999; 5:185-95. [PMID: 10483063 DOI: 10.1111/j.1601-0825.1999.tb00300.x] [Citation(s) in RCA: 96] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Lip cancer (140 ICD-9) is a form of oral cancer that has a distinctive global epidemiology. This review summarises global incidence rates for male and female lip cancer with the aid of cancer atlases. High male lip cancer rates are reported for regions of North America (12.7 per 100 000 per annum), Europe (12.0 per 100 000 per annum) and Oceania (13.5 per 100 000 per annum), while it is virtually unknown in parts of Asia. Factors commonly cited as important in the aetiology of lip cancer include solar radiation, tobacco smoking and viruses. An attempt is made to summarise the evidence for factors that may be important in lip carcinogenesis. While incidence rates are generally stable or falling among males worldwide, they are rising in many female populations. The aetiology of the disease is far from established and much information regarding its pathogenesis is based on anecdotal rather than case-controlled epidemiological evidence. The epidemiology of lip cancer supports the proposal that the lip should be considered as a distinct cancer site, rather than being included with other forms of intraoral cancer.
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Affiliation(s)
- S Moore
- Department of Dentistry, The University of Adelaide, 5005 Australia
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Abstract
The genetic alterations observed in head and neck cancer are mainly due to oncogene activation (gain of function mutations) and tumor suppressor gene inactivation (loss of function mutations), leading to deregulation of cell proliferation and death. These genetic alterations include gene amplification and overexpression of oncogenes such as myc, erbB-2, EGFR and cyclinD1 and mutations, deletions and hypermethylation leading to p16 and TP53 tumor suppressor gene inactivation. In addition, loss of heterozygosity in several chromosomal regions is frequently observed, suggesting that other tumor suppressor genes not yet identified could be involved in the tumorigenic process of head and neck cancers. The exact temporal sequence of the genetic alterations during head and neck squamous cell carcinoma (HNSCC) development and progression has not yet been defined and their diagnostic or prognostic significance is controversial. Advances in the understanding of the molecular basis of head and neck cancer should help in the identification of new markers that could be used for the diagnosis, prognosis and treatment of the disease.
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Affiliation(s)
- M A Nagai
- Departamento de Radiologia, Faculdade de Medicina, Universidade de São Paulo, Brasil.
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Jefferies S, Eeles R, Goldgar D, A'Hern R, Henk JM, Gore M. The role of genetic factors in predisposition to squamous cell cancer of the head and neck. Br J Cancer 1999; 79:865-7. [PMID: 10070882 PMCID: PMC2362666 DOI: 10.1038/sj.bjc.6690138] [Citation(s) in RCA: 31] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
Abstract
© 1999 Cancer Research Campaign
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Affiliation(s)
- S Jefferies
- Institute of Cancer Research and the Royal Marsden Hospital, Sutton, Surrey, UK.
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32
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Wong DT, Todd R. Carcinoma of the tongue in two siblings. J Oral Maxillofac Surg 1999. [DOI: 10.1016/s0278-2391(99)90637-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Affiliation(s)
- F Ide
- Department of Oral Surgery, Saitama Medical Center, Saitama Medical School, Kawagoe, Japan
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Ankathil R, Bhattathiri NV, Francis JV, Ratheesan K, Jyothish B, Chandini R, Roy DD, Elizabeth AK, Nair MK. Mutagen sensitivity as a predisposing factor in familial oral cancer. Int J Cancer 1996; 69:265-7. [PMID: 8797865 DOI: 10.1002/(sici)1097-0215(19960822)69:4<265::aid-ijc4>3.0.co;2-v] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Abstract
Pedigree analysis of the oral cancer (OC) patients registered at our Centre had disclosed familial aggregation of oral cancer which hitherto has not been largely reported. There is a paucity of information on the genetic determinism for familial oral cancer predisposition. Therefore, we investigated constitutional chromosome abnormalities and bleomycin-induced chromosome sensitivity of 7 familial and 10 sporadic oral cancer patients and 14 unaffected family members (first-degree relatives) to determine whether these factors could give any clues regarding cancer-predisposing factors. Neither the oral cancer patients nor the unaffected family members showed any constitutional chromosomal abnormalities. However, with regard to bleomycin sensitivity, there was significant difference between the oral-cancer patients and unaffected relatives. The mean b/c value was 1.68 +/- 0.48 for familial OC patients, 1.12 +/- 0.36 for sporadic OC patients and 0.52 +/- 0.18 for the unaffected family members (p < 0.001). A noteworthy observation was that one unaffected family member also showed bleomycin hypersensitivity and expressed a mean b/c value of 1.32, at the initiation of the study. That patient later developed oral carcinoma. This clearly demonstrates that mutagen hypersensitivity among unaffected relatives in OC families may be related to cancer predisposition. The mutagen sensitivity study is being continued in a larger series of subjects, for the development of a cytogenetic marker for prediction of cancer susceptibility.
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Affiliation(s)
- R Ankathil
- Dept. of Cancer Research, Regional Cancer Centre, Trivandrum, India
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