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Kuguyo O, Tsikai N, Thomford NE, Magwali T, Madziyire MG, Nhachi CFB, Matimba A, Dandara C. Genetic Susceptibility for Cervical Cancer in African Populations: What Are the Host Genetic Drivers? OMICS-A JOURNAL OF INTEGRATIVE BIOLOGY 2019; 22:468-483. [PMID: 30004844 DOI: 10.1089/omi.2018.0075] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Abstract
Human papillomavirus (HPV) is an essential but not a sufficient cervical cancer etiological factor. Cancer promoters, such as host genetic mutations, significantly modulate therapeutic responses and susceptibility. In cervical cancer, of interest have been viral clearing genes and HPV oncoprotein targets, for which conflicting data have been reported among different populations. This expert analysis evaluates cervical cancer genetic susceptibility biomarkers studied in African populations. Notably, the past decade has seen Africa as a hotbed of biomarker and precision medicine innovations, thus potentially informing worldwide biomarker development strategies. We conducted a critical literature search in PubMed/MEDLINE, Google Scholar, and Scopus databases for case-control studies reporting on cervical cancer genetic polymorphisms among Africans. We found that seven African countries conducted cervical cancer molecular epidemiology studies in one of Casp8, p53, CCR2, FASL, HLA, IL10, TGF-beta, and TNF-alpha genes. This analysis reveals a remarkable gap in cervical cancer molecular epidemiology among Africans, whereas cervical cancer continues to disproportionately have an impact on African populations. Genome-wide association, whole exome- and whole-genome sequencing studies confirmed the contribution of candidate genes in cervical cancer. With such advances and omics technologies, the role of genetic susceptibility biomarkers can be exploited to develop novel interventions to improve current screening, diagnostic and prognostic methods worldwide. Exploring these genetic variations is crucial because African populations are genetically diverse and some variants or their combined effects are yet to be discovered and translated into tangible clinical applications. Thus, translational medicine and flourishing system sciences in Africa warrant further emphasis in the coming decade.
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Affiliation(s)
- Oppah Kuguyo
- 1 Department of Clinical Pharmacology, College of Health Sciences, University of Zimbabwe , Harare, Zimbabwe
| | - Nomsa Tsikai
- 2 Chemotherapy and Radiotherapy Center, Parirenyatwa Group of Hospitals , Harare, Zimbabwe
| | - Nicholas E Thomford
- 3 Pharmacogenetics and Drug Metabolism Research Group, Division of Human Genetics, Department of Pathology, Faculty of Health Sciences, Institute of Infectious Diseases and Molecular Medicine, University of Cape Town , Cape Town, South Africa
| | - Thulani Magwali
- 4 Department of Obstetrics and Gynecology, College of Health Sciences, University of Zimbabwe , Harare, Zimbabwe
| | - Mugove G Madziyire
- 4 Department of Obstetrics and Gynecology, College of Health Sciences, University of Zimbabwe , Harare, Zimbabwe
| | - Charles F B Nhachi
- 1 Department of Clinical Pharmacology, College of Health Sciences, University of Zimbabwe , Harare, Zimbabwe
| | - Alice Matimba
- 1 Department of Clinical Pharmacology, College of Health Sciences, University of Zimbabwe , Harare, Zimbabwe
| | - Collet Dandara
- 3 Pharmacogenetics and Drug Metabolism Research Group, Division of Human Genetics, Department of Pathology, Faculty of Health Sciences, Institute of Infectious Diseases and Molecular Medicine, University of Cape Town , Cape Town, South Africa
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Lahsen AO, Baba H, Bensghir R, Fayssel N, Sodqi M, Marih L, Nadifi S, Wakrim L, El Filali KM, Ezzikouri S. TP53 R72P Polymorphism and Susceptibility to Human Papillomavirus Infection Among Women With Human Immunodeficiency Virus in Morocco: A Case-control Study. J Cancer Prev 2017; 22:248-253. [PMID: 29302583 PMCID: PMC5751843 DOI: 10.15430/jcp.2017.22.4.248] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2017] [Revised: 11/21/2017] [Accepted: 11/23/2017] [Indexed: 01/27/2023] Open
Abstract
Background Human papillomavirus (HPV) is the most common sexually transmitted agent worldwide. HPV is the main causative agent for cervical cancer. The HPV oncoprotein E6 binds to the tumor suppressor gene product p53, promoting its degradation; the Arg allele of TP53 R72P polymorphism binds more ardently with HPV E6 than the Pro variant. Here, we investigated whether TP53 R72P gene variant, rs104252, was associated with susceptibility to HPV infection in women with human immunodeficiency virus (HIV). Methods We analyzed 200 HPV-positive and 68 uninfected women with HIV. Genomic DNA was isolated from cervical swab. The TP53 R72P polymorphism was genotyped by PCR-RFLP. Unconditional logistic regression was used to assess the association between polymorphism and the clinical, lifestyle, and behavioral data. Results The genotype and allele frequencies of rs104252 variant did not differ between women without or with HPV infection (P > 0.05). Moreover, the p53 polymorphism was not associated with cervical cytology. In contrast, when we analyzed according to behavior factors, the P72P genotype was more frequent among HPV-positive smoker women. However, no significant relationship was found between alcohol, contraceptive use, and number of partners with TP53 R72P genotype distributions among HPV-positive cases (P > 0.05). Conclusions The R72 variant of p53 R72P is not associated with HPV infection and progression of lesions. There was no association between this variant and behavior factors in HPV-positive cases. The P72P genotype may be more frequent among HPV-positive smoker women.
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Affiliation(s)
- Ahd Oulad Lahsen
- Service des Maladies Infectieuses, CHU Ibn Rochd, Casablanca, Morocco.,Virology Unit, Viral Hepatitis Laboratory, Institut Pasteur du Maroc, Casablanca, Morocco
| | - Hanâ Baba
- Virology Unit, Immunovirology Laboratory, Institut Pasteur du Maroc, Casablanca, Morocco
| | - Rajaa Bensghir
- Service des Maladies Infectieuses, CHU Ibn Rochd, Casablanca, Morocco
| | - Naouar Fayssel
- Virology Unit, Immunovirology Laboratory, Institut Pasteur du Maroc, Casablanca, Morocco
| | - Mustapha Sodqi
- Service des Maladies Infectieuses, CHU Ibn Rochd, Casablanca, Morocco
| | - Latifa Marih
- Service des Maladies Infectieuses, CHU Ibn Rochd, Casablanca, Morocco
| | - Sellama Nadifi
- Laboratoire de Génétique Médicale et de Pathologie Moléculaire, Faculté de Médecine et de Pharmacie, Casablanca, Morocco
| | - Lahcen Wakrim
- Virology Unit, Immunovirology Laboratory, Institut Pasteur du Maroc, Casablanca, Morocco
| | | | - Sayeh Ezzikouri
- Virology Unit, Viral Hepatitis Laboratory, Institut Pasteur du Maroc, Casablanca, Morocco
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Northwestern China: a place to learn more on oesophageal cancer. Part two: gene alterations and polymorphisms. Eur J Gastroenterol Hepatol 2011; 23:1087-99. [PMID: 22002005 DOI: 10.1097/meg.0b013e32834a14d9] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
In the first part of this review, some behavioural and environmental risk factors playing important roles in the development of Kazakh's oesophageal squamous cell carcinoma (OSCC) were presented. Although all individuals have been exposed to the same environment and share the same behaviour, some of them will not develop OSCC. Thus, gene susceptibility and/or gene polymorphism are unavoidably involved. The molecular events underlying the initiation and progression of OSCC remain, however, poorly understood. In the second part of our review of OSCC in northwestern China, especially in the high-risk Kazakh population, some recent progress in the study of the molecular biology underlying oesophageal carcinogenesis, including chromosome deletions and loss of heterozygocity, polymorphisms of genes involved in xenobiotic metabolizing and DNA repair, and genetic alterations of transcriptional factors and apoptosis genes are presented. Results obtained in this high-risk population are compared with those obtained in other areas that are also known to be at high risk for OSCC, and whenever possible, with those studies performed in European, American or Australian low-risk areas. Recent advances in the investigation of the proteomics and microRNA biomarkers potentially useful for an earlier diagnosis and/or prognosis of OSCC are also discussed.
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Ferreira da Silva I, Koifman RJ, Quinto Santos Souza C, Ferreira de Almeida Neto O, Koifman S. TP53 genetic polymorphisms and environmental risk factors associated with cervical carcinogenesis in a cohort of Brazilian women with cervical lesions. JOURNAL OF TOXICOLOGY AND ENVIRONMENTAL HEALTH. PART A 2010; 73:888-900. [PMID: 20563922 DOI: 10.1080/15287391003744823] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/29/2023]
Abstract
The purpose of this study was to determine the prevalence of TP53 polymorphism at codon 72 and its association with environmental risk factors in a sample of women in Rio de Janeiro, Brazil. A cross-sectional study was conducted with 304 women with histological diagnoses of negative, precancerous, and cancerous lesions between October 2004 and May 2006. Antecedents of exposure to environmental risk factors were ascertained through an interview-administered questionnaire, and whenever indicated, colposcopy tests and lesion excisions were performed. Genomic DNA was extracted from leukocytes of peripheral blood subjects, and genotyping of TP53 polymorphism was conducted using polymerase chain reaction and restriction fragment-length polymorphism methods. Crude and adjusted odds ratios (OR) and their 95% confidence intervals (CI) were ascertained for selected risk factors and allelic groups among control, low-grade squamous intraepithelial lesion (LSIL), and high-grade squamous intraepithelial lesion (HSIL)/cancer strata, using logistic regression analysis. The TP53 polymorphism distribution in this population was 64 (21.1%) Arg/Arg, 55 (18.1%) Pro/Pro, and 185 (60.9%) Arg/Pro. Women who were heterozygous (Arg/Pro) showed an independent risk for cervical HSIL/cancer (adjusted OR: 1.92, 95%CI: 1.03-1.59, controlled for age, ethnicity, and age at menarche) compared to Pro/Pro genotypic women. Age at sexual onset up to 16 yr old (adjusted OR: 1.97, 95%CI: 1.18-3.3), lifelong 3-4 sexual partners (adjusted OR: 2.38, 95%CI: 1.32-4.28), current smoking (adjusted OR: 2.32, 95%CI: 1.31-4.13), and smoking more than 10 yr (adjusted OR: 2.52, 95%CI: 1.042-6.09) were found to be independent risk factors for cervical HSIL/cancer. Women possessing the Arg/Pro genotype presented a higher risk for HSIL/cancer development compared to Pro/Pro genotypic women in the sample studied after control for selected confounders. Early sexual onset, multiple sexual partners, and current and past tobacco smoking were independent risk factors for HSIL/cancer development.
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Affiliation(s)
- Ilce Ferreira da Silva
- Studies and Research Department, Hospital of Cancer-II, Brazilian National Cancer Institute, Rio de Janeiro, Brazil.
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El khair MM, Ennaji MM, El kebbaj R, Mhand RA, Attaleb M, El Mzibri M. p53 codon 72 polymorphism and risk of cervical carcinoma in Moroccan women. Med Oncol 2009; 27:861-6. [DOI: 10.1007/s12032-009-9297-6] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2009] [Accepted: 08/18/2009] [Indexed: 11/28/2022]
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Klug SJ, Ressing M, Koenig J, Abba MC, Agorastos T, Brenna SMF, Ciotti M, Das BR, Del Mistro A, Dybikowska A, Giuliano AR, Gudleviciene Z, Gyllensten U, Haws ALF, Helland A, Herrington CS, Hildesheim A, Humbey O, Jee SH, Kim JW, Madeleine MM, Menczer J, Ngan HYS, Nishikawa A, Niwa Y, Pegoraro R, Pillai MR, Ranzani G, Rezza G, Rosenthal AN, Roychoudhury S, Saranath D, Schmitt VM, Sengupta S, Settheetham-Ishida W, Shirasawa H, Snijders PJF, Stoler MH, Suárez-Rincón AE, Szarka K, Tachezy R, Ueda M, van der Zee AGJ, von Knebel Doeberitz M, Wu MT, Yamashita T, Zehbe I, Blettner M. TP53 codon 72 polymorphism and cervical cancer: a pooled analysis of individual data from 49 studies. Lancet Oncol 2009; 10:772-84. [DOI: 10.1016/s1470-2045(09)70187-1] [Citation(s) in RCA: 103] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
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Smith JS, Melendy A, Rana RK, Pimenta JM. Age-specific prevalence of infection with human papillomavirus in females: a global review. J Adolesc Health 2008; 43:S5-25, S25.e1-41. [PMID: 18809145 DOI: 10.1016/j.jadohealth.2008.07.009] [Citation(s) in RCA: 194] [Impact Index Per Article: 12.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/12/2008] [Revised: 06/27/2008] [Accepted: 07/03/2008] [Indexed: 01/08/2023]
Abstract
PURPOSE Global data on age-specific prevalence of human papillomavirus (HPV) infection overall, and for high-risk HPV types 16 and 18, are essential for the future implementation of HPV prophylactic vaccines for cervical cancer prevention. METHODS A systematic review of peer-reviewed publications was conducted to summarize worldwide data on genital HPV-DNA prevalence in women. Studies with clear descriptions of polymerase chain reaction or hybrid capture detection assays were included. RESULTS A total of 346,160 women were included in 375 studies. Of 134 studies with age-stratified HPV prevalence data (116 low sexual risk populations, 18 high sexual risk populations), over 50% were from Europe and the Middle East (38%) and North America (19%), with smaller proportions from Asia and Australia (21%), Central and South America (11%), and Africa (10%). Across all geographical regions, data on HPV prevalence were generally limited to women over 18 years of age. Consistently across studies, HPV infection prevalence decreased with increasing age from a peak prevalence in younger women (< or =25 years of age). In middle-aged women (35-50 years), maximum HPV prevalence differed across geographical regions: Africa (approximately 20%), Asia/Australia (approximately 15%), Central and South America (approximately 20%), North America (approximately 20%), Southern Europe/Middle East (approximately 15%), and Northern Europe (approximately 15%). Inconsistent trends in HPV prevalence by age were noted in older women, with a decrease or plateau of HPV prevalence in older ages in most studies, whereas others showed an increase of HPV prevalence in older ages. Similar trends of HPV 16 and/or 18 prevalence by age were noted among 12 populations with available data. DISCUSSION Genital HPV infection in women is predominantly acquired in adolescence, and peak prevalence in middle-aged women appears to differ across geographical regions. Worldwide variations in HPV prevalence across age appear to largely reflect differences in sexual behavior across geographical regions. Further studies of HPV prevalence in adolescents are needed for all geographic regions.
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Affiliation(s)
- Jennifer S Smith
- Department of Epidemiology, University of North Carolina, Chapel Hill, North Carolina 27599, USA.
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Oliveira S, Sousa H, Santos A, Pinto D, Pinto-Correia A, Fontoura D, Moutinho J, Medeiros R. The p53 R72P polymorphism does not influence cervical cancer development in a portuguese population: A study in exfoliated cervical cells. J Med Virol 2008; 80:424-9. [DOI: 10.1002/jmv.21103] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
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Monnier-Benoit S, Mauny F, Riethmuller D, Guerrini JS, Căpîlna M, Félix S, Seillès E, Mougin C, Prétet JL. Immunohistochemical analysis of CD4+ and CD8+ T-cell subsets in high risk human papillomavirus-associated pre-malignant and malignant lesions of the uterine cervix. Gynecol Oncol 2006; 102:22-31. [PMID: 16427684 DOI: 10.1016/j.ygyno.2005.11.039] [Citation(s) in RCA: 68] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2005] [Revised: 11/15/2005] [Accepted: 11/18/2005] [Indexed: 12/21/2022]
Abstract
OBJECTIVES Humoral and cellular immune responses are likely to play a key role for the clearance or persistence and progression of high risk (HR) HPV-associated cervical lesions. Although there are many studies describing the systemic T-cell responses to HPV16 and 18 proteins, few data are available regarding the cellular mucosal immune responses. We used immunohistochemistry to characterize populations of T-immune cells (CD4+, CD8+, CD45RO+) in HR-HPV-infected precancerous and cancerous lesions of the uterine cervix. METHODS Four biopsies from normal cervix, 9 CIN1 which have regressed (rCIN), 5 CIN1 which have progressed (pCIN) to high grade lesions, 13 CIN3 and 11 invasive carcinomas were included. All dysplasias and carcinomas were HR-HPV-positive and low-risk-HPV-negative. They were stained with monoclonal antibodies specific for CD4, CD8 and CD45RO and examined by microscopy. STATISTICAL ANALYSIS The Kruskal-Wallis test and the Siegel's and Castelan's method were used. RESULTS.: CD4+ cells predominated in regressing CIN1 both within the stroma and the epithelium with the highest CD4+/CD8+ ratio compared with pCIN1, CIN3 and invasive carcinoma. At the exception of CD45RO+ cells, T cells were detected with similar frequencies in both pCIN1 and CIN3. However, in 7 out of 10 CIN3, CD4+ and CD8+ cells were visible as organized lymphoid follicle structure. The CD8+ and CD45RO+ cells far exceeded the CD4+ cells in invasive cancers. CONCLUSIONS Density and distribution of immune T cells depend on the malignant potential of HR-HPV lesions. These results suggest that the studied lymphocyte subsets have an important role to fulfil during the natural history of HR-HPV-associated lesions.
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Affiliation(s)
- Sylvain Monnier-Benoit
- EA 3181, IFR 133, Université de Franche-Comté, Rue Ambroise Paré, 25000 Besançon, France
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Clifford GM, Rana RK, Franceschi S, Smith JS, Gough G, Pimenta JM. Human papillomavirus genotype distribution in low-grade cervical lesions: comparison by geographic region and with cervical cancer. Cancer Epidemiol Biomarkers Prev 2005; 14:1157-64. [PMID: 15894666 DOI: 10.1158/1055-9965.epi-04-0812] [Citation(s) in RCA: 368] [Impact Index Per Article: 19.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023] Open
Abstract
Low-grade squamous intraepithelial lesions (LSIL) associated with certain human papillomavirus (HPV) genotypes may preferentially progress to cervical cancer. HPV genotyping may thus have the potential to improve the effectiveness of screening programs and to reduce overtreatment. LSIL cases (n = 8,308) from 55 published studies were included in a meta-analysis. HPV genotype distribution was assessed by geographic region and in comparison with published data on cervical squamous cell carcinoma (SCC). HPV detection in LSIL was 80% in North America but less than 70% in other regions, most likely reflecting regional differences in LSIL diagnosis. Among 5,910 HPV-positive LSILs, HPV16 was the most common genotype (26.3%) followed by HPV31 (11.5%), HPV51 (10.6%), and HPV53 (10.2%). HPV-positive LSILs from Africa were 2-fold less likely to be infected with HPV16 than those in Europe, and HPV-positive LSILs from North America were more likely to be infected with HPV18 than those from Europe or South/Central America. Interpretation for rarer genotypes was hampered by variation in HPV testing methodology. SCC/LSIL prevalence ratios indicated that HPV16 was 2-fold and HPV18 was 1.5-fold more common in SCC than in HPV-positive LSIL, thus appearing more likely to progress than other high-risk genotypes (SCC/LSIL prevalence ratios between 0.05 and 0.85). HPV53 and HPV66 showed SCC/LSIL ratios of 0.02 and 0.01, respectively. HPV genotype distribution in LSIL differs from that in cervical cancer, highlighting the importance of HPV genotype in the risk of progression from LSIL to malignancy. Some regional differences in the relative importance of HPV genotypes in LSIL were noted.
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Affiliation(s)
- Gary M Clifford
- IARC, 150 Cours Albert Thomas, F-69372 Lyon cedex 08, France.
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Mitra S, Misra C, Singh RK, Panda CK, Roychoudhury S. Association of specific genotype and haplotype of p53 gene with cervical cancer in India. J Clin Pathol 2005; 58:26-31. [PMID: 15623478 PMCID: PMC1770549 DOI: 10.1136/jcp.2004.019315] [Citation(s) in RCA: 43] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
BACKGROUND The predictive value of codon 72 arginine homozygosity at the p53 gene for human papilloma virus associated cervical cancer risk remains inconclusive. It has also been proposed that the inheritance of specific germline haplotypes based on three biallelic polymorphisms of p53 (intron 3 16 bp duplication, codon 72 Bst UI (Arg/Pro), and intron 6 Nci I restriction fragment length polymorphism at nucleotide 13494) is a better predictor of various cancer risks. AIMS To determine the genotype and haplotype frequency of these three p53 polymorphisms in 61 patients with cervical squamous cell carcinoma and 94 ethnically matched controls from the eastern region of India and estimate the risk, if any, of specific genotypes and haplotypes. METHODS Samples were genotyped by polymerase chain reaction followed by variant specific restriction enzyme digestion. Haplotypes were estimated by the maximum likelihood method using the expectation maximisation algorithm. RESULTS Genotype distributions of the three polymorphisms in patients and controls showed a good fit to the Hardy-Weinberg equilibrium. The p53 codon 72 arginine homozygous genotype was significantly over represented in patients compared with controls. Those with the homozygous arginine genotype exhibited a 2.59 fold higher risk of developing squamous cell carcinoma of the uterine cervix. A significant risk was also seen with a combination of two haplotypes, 1-2-1 and 1-2-2. CONCLUSION p53 codon 72 arginine homozygotes appear to be at greater risk of developing squamous cell carcinoma of the uterine cervix. The high risk haplotypes 1-2-1 and 1-2-2 also contain the arginine allele, further strengthening this conclusion.
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Affiliation(s)
- S Mitra
- Indian Institute of Chemical Biology, 4, Raja S. C. Mullick Road, Kolkata 700 032, India
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Cortezzi SS, Provazzi PJ, Sobrinho JS, Mann-Prado JC, Reis PMP, de Freitas SEN, Filho JFG, Fukuyama EE, Cordeiro JA, Cury PM, Maniglia JV, Villa LL, Tajara EH, Rahal P. Analysis of human papillomavirus prevalence and TP53 polymorphism in head and neck squamous cell carcinomas. ACTA ACUST UNITED AC 2004; 150:44-9. [PMID: 15041222 DOI: 10.1016/j.cancergencyto.2003.07.010] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2003] [Revised: 07/04/2003] [Accepted: 07/29/2003] [Indexed: 12/29/2022]
Abstract
Head and neck squamous cell carcinoma is a disease associated with tobacco and alcohol abuse. There is evidence that the oncogenic human papillomavirus (HPV) may also be a risk for upper aerodigestive tract cancers. High-risk HPVs encode two early proteins, E6 and E7, that can bind to p53 and pRb, respectively, and induce its degradation or inactivation. The TP53 gene has a single polymorphism at codon 72 of exon 4 that encodes either arginine (Arg) or proline (Pro). The purpose of this study was to evaluate the role of HPV infection and TP53 polymorphism in head and neck cancer. We analyzed 50 tumors, as well swabs of oral mucosa from 142 control individuals, with a polymerase chain reaction technique. The prevalence of HPV in controls was 10.6% and in cancer specimens 16%. The frequency distribution of genotypes in controls was 50% Arg/Arg, 43% Arg/Pro and 7% Pro/Pro; in tumors, it was 52% Arg/Arg, 32% Arg/Pro, and 16% Pro/Pro. Contrary to the results of some studies on cervical cancer, no association between any TP53 genotype or allele and the development of head and neck cancer was observed, regardless of HPV status, except for the Pro/Pro genotype, which is associated with the absence of HPV. The arginine allele appears to protect against head and neck cancers. Also, the data showed that HPV infection results in no increased risk of developing head and neck tumors.
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Affiliation(s)
- Sylvia Sanches Cortezzi
- Instituto de Biociências, Letras e Ciências Exatas, IBILCE/UNESP, Rua Cristóvão Colombo, 2265, CEP 15054-000, São José do Rio Preto, SP, Brazil
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Koushik A, Platt RW, Franco EL. p53 Codon 72 Polymorphism and Cervical Neoplasia: A Meta-Analysis Review. Cancer Epidemiol Biomarkers Prev 2004; 13:11-22. [PMID: 14744727 DOI: 10.1158/1055-9965.epi-083-3] [Citation(s) in RCA: 111] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
The Arg/Arg genotype versus Arg/Pro or Pro/Pro at codon 72 of the p53 gene has been implicated as a risk marker in cervical neoplasia. However, research on this topic has produced controversial results. We reviewed the published literature to summarize the association and to identify methodological features that may have contributed to the heterogeneity. Information on specific methodological features of studies addressing this topic published between 1998 and 2002 were obtained. Study-specific odds ratios (ORs) were combined in a meta-analysis, assuming random effects. To identify characteristics that significantly contributed to heterogeneity, we used meta-regression analysis. We identified 50 articles, of which 45 were included in the meta-analyses and regressions. No evidence of association or heterogeneity was detected for preinvasive lesions. For invasive cervical cancer with undefined histology, the Arg/Arg genotype was not found to affect risk (OR, 1.1; 95% confidence interval (CI), 0.9-1.3). However, a slightly increased risk was observed for squamous cell carcinoma (OR, 1.5; 95% CI, 1.2-1.9) and adenocarcinoma (OR, 1.7; 95% CI, 1.0-2.7). Meta-regression analysis identified that the most important factor contributing to heterogeneity among results for invasive lesions was departures from Hardy-Weinberg equilibrium in the control group. Summary ORs for studies in equilibrium were essentially null. A possible susceptibility role by the p53 codon 72 polymorphism at a late carcinogenetic stage in cervical cancer cannot be ruled out. However, various methodological features can contribute to departures from Hardy-Weinberg equilibrium and consequently to less than ideal circumstances for the examination of this polymorphism. Future investigations require appropriate attention to design and methodological issues.
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Affiliation(s)
- Anita Koushik
- Department of Epidemiology and Biostatistics, McGill University, Montréal, Québec, Canada
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Humbey O, Cairey-Remonnay S, Guérrini JS, Algros MP, Mougin C, Bittard H, Aubin F. Detection of the human papillomavirus and analysis of the TP53 polymorphism of exon 4 at codon 72 in penile squamous cell carcinomas. Eur J Cancer 2003; 39:684-90. [PMID: 12628849 DOI: 10.1016/s0959-8049(02)00835-3] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Abstract
Human papillomaviruses (HPV) are thought to be involved in penile squamous cell carcinomas (SCC). A common polymorphism at codon 72 of exon 4 encoding either arginine (Arg) or proline (Pro) has been shown to affect HPV-mediated degradation of p53 in vitro, and may represent a risk factor for HPV-induced carcinogenesis. The presence of HPV DNA as well as the TP53 polymorphism at codon 72 of exon 4 were investigated in a series of 45 penile SCC. HPV detection and typing were carried out by polymerase chain reaction (PCR) with generic primers (MY09-MY11 and FAP59-FAP64), and type-specific DNA probes. TP53 polymorphism was further investigated using Denaturing Gradient Gel Electrophoresis (DGGE). HPV DNA was detected in 67% of penile SCC and 32% of benign lesions (BL) (P<0.05). Among the TP53 amplified samples, the rate of Arg homozygosity in penile SCC was 61% compared with 68% in BL (non-significant (NS)). Our results demonstrate a strong association between penile SCC and the presence of HPV DNA. The TP53 Arg/Arg genotype does not appear to represent a risk factor for the development of genital SCC in men, and no correlation was found between the TP53 polymorphism at codon 72 and the presence of HPV DNA.
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Affiliation(s)
- O Humbey
- Department of Cell Biology-EA 3181-Institut d'Etude et de Transfert de Gènes, University Hospital, 25030 Besançon Cedex, France
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