Marron M.,International Agency for Research on Cancer |
Marron M.,King's College London |
Boffetta P.,International Agency for Research on Cancer |
Zhang Z.-F.,University of California at Los Angeles |
And 44 more authors.
International Journal of Epidemiology | Year: 2010
Background: Quitting tobacco or alcohol use has been reported to reduce the head and neck cancer risk in previous studies. However, it is unclear how many years must pass following cessation of these habits before the risk is reduced, and whether the risk ultimately declines to the level of never smokers or never drinkers. Methods: We pooled individual-level data from case-control studies in the International Head and Neck Cancer Epidemiology Consortium. Data were available from 13 studies on drinking cessation (9167 cases and 12 593 controls), and from 17 studies on smoking cessation (12 040 cases and 16 884 controls). We estimated the effect of quitting smoking and drinking on the risk of head and neck cancer and its subsites, by calculating odds ratios (ORs) using logistic regression models. Results: Quitting tobacco smoking for 1-4 years resulted in a head and neck cancer risk reduction [OR 0.70, confidence interval (CI) 0.61-0.81 compared with current smoking], with the risk reduction due to smoking cessation after ≥20 years (OR 0.23, CI 0.18-0.31), reaching the level of never smokers. For alcohol use, a beneficial effect on the risk of head and neck cancer was only observed after ≥20 years of quitting (OR 0.60, CI 0.40-0.89 compared with current drinking), reaching the level of never drinkers. Conclusions: Our results support that cessation of tobacco smoking and cessation of alcohol drinking protect against the development of head and neck cancer. © The Author 2009; all rights reserved. Published by Oxford University Press on behalf of the International Epidemiological Association.
Toporcov T.N.,University of Sao Paulo |
Znaor A.,Croatian National Cancer Registry |
Zhang Z.-F.,University of California at Los Angeles |
Yu G.-P.,Peking University |
And 60 more authors.
International Journal of Epidemiology | Year: 2015
Background: Increasing incidence of head and neck cancer (HNC) in young adults has been reported. We aimed to compare the role of major risk factors and family history of cancer in HNC in young adults and older patients. Methods: We pooled data from 25 case-control studies and conducted separate analyses for adults 45 years old ('young adults', 2010 cases and 4042 controls) and >45 years old ('older adults', 17 700 cases and 22 704 controls). Using logistic regression with studies treated as random effects, we estimated adjusted odds ratios (ORs) and 95% confidence intervals (CIs). Results: The young group of cases had a higher proportion of oral tongue cancer (16.0% in women; 11.0% in men) and unspecified oral cavity/oropharynx cancer (16.2%; 11.1%) and a lower proportion of larynx cancer (12.1%; 16.6%) than older adult cases. The proportions of never smokers or never drinkers among female cases were higher than among male cases in both age groups. Positive associations with HNC and duration or pack-years of smoking and drinking were similar across age groups. However, the attributable fractions (AFs) for smoking and drinking were lower in young when compared with older adults (AFs for smoking in young women, older women, young men and older men, respectively, = 19.9% (95% CI=9.8%, 27.9%), 48.9% (46.6%, 50.8%), 46.2% (38.5%, 52.5%), 64.3% (62.2%, 66.4%); AFs for drinking=5.3% (11.2%, 18.0%), 20.0% (14.5%, 25.0%), 21.5% (5.0%, 34.9%) and 50.4% (46.1%, 54.3%). A family history of early-onset cancer was associated with HNC risk in the young [OR=2.27 (95% CI=1.26, 4.10)], but not in the older adults [OR=1.10 (0.91, 1.31)]. The attributable fraction for family history of early-onset cancer was 23.2% (8.60% to 31.4%) in young compared with 2.20% (2.41%, 5.80%) in older adults. Conclusions: Differences in HNC aetiology according to age group may exist. The lower AF of cigarette smoking and alcohol drinking in young adults may be due to the reduced length of exposure due to the lower age. Other characteristics, such as those that are inherited, may play a more important role in HNC in young adults compared with older adults.
Galeone C.,Irccs Instituto Of Ricerche Farmacologiche Mario Negri |
Edefonti V.,University of Milan |
Parpinel M.,University of Udine |
Leoncini E.,Institute of Public Health |
And 21 more authors.
International Journal of Cancer | Year: 2015
There are suggestions of an inverse association between folate intake and serum folate levels and the risk of oral cavity and pharyngeal cancers (OPCs), but most studies are limited in sample size, with only few reporting information on the source of dietary folate. Our study aims to investigate the association between folate intake and the risk of OPC within the International Head and Neck Cancer Epidemiology (INHANCE) Consortium. We analyzed pooled individual-level data from ten case-control studies participating in the INHANCE consortium, including 5,127 cases and 13,249 controls. Odds ratios (ORs) and the corresponding 95% confidence intervals (CIs) were estimated for the associations between total folate intake (natural, fortification and supplementation) and natural folate only, and OPC risk. We found an inverse association between total folate intake and overall OPC risk (the adjusted OR for the highest vs. the lowest quintile was 0.65, 95% CI: 0.43-0.99), with a stronger association for oral cavity (OR50.57, 95% CI: 0.43-0.75). A similar inverse association,though somewhat weaker, was observed for folate intake from natural sources only in oral cavity cancer (OR50.64, 95% CI: 0.45-0.91). The highest OPC risk was observed in heavy alcohol drinkers with low folate intake as compared to never/light drinkers with high folate (OR54.05, 95% CI: 3.43-4.79); the attributable proportion (AP) owing to interaction was 11.1% (95% CI: 1.4-20.8%). Lastly, we reported an OR of 2.73 (95% CI:2.34-3.19) for those ever tobacco users with low folateintake, compared with nevere tobacco users and high folate intake (AP of interaction 510.6%, 95% CI: 0.41-20.8%). Our project of a large pool of case-control studies supports a protective effect of total folate intake on OPC risk. © 2014 UICC.
Ahrens W.,Leibniz Institute for Prevention Research and Epidemiology BIPS |
Ahrens W.,University of Bremen |
Pohlabeln H.,Data Management |
Foraita R.,Data Management |
And 33 more authors.
Oral Oncology | Year: 2014
Objective We aimed to assess the association of oral health (OH), dental care (DC) and mouthwash with upper-aerodigestive tract (UADT) cancer risk, and to examine the extent that enzymes involved in the metabolism of alcohol modify the effect of mouthwash. Materials and methods The study included 1963 patients with incident cancer of the oral cavity, oropharynx, hypopharynx, larynx or esophagus and 1993 controls. Subjects were interviewed about their oral health and dental care behaviors (which were converted to scores of OH and DC respectively), as well as smoking, alcohol drinking, diet, occupations, medical conditions and socio-economic status. Blood samples were taken for genetic analyses. Mouthwash use was analyzed in relation to the presence of polymorphisms of alcohol-metabolizing genes known to be associated with UADT. Adjusted odds ratios (ORs) and 95%-confidence intervals [CI] were estimated with multiple logistic regression models adjusting for multiple confounders. Results Fully adjusted ORs of low versus high scores of DC and OH were 2.36[CI = 1.51-3.67] and 2.22[CI = 1.45-3.41], respectively, for all UADT sites combined. The OR for frequent use of mouthwash use (3 or more times/day) was 3.23[CI = 1.68-6.19]. The OR for the rare variant ADH7 (coding for fast ethanol metabolism) was lower in mouthwash-users (OR = 0.53[CI = 0.35-0.81]) as compared to never-users (OR = 0.97[CI = 0.73-1.29]) indicating effect modification (pheterogeneity = 0.065) while no relevant differences were observed between users and non-users for the variant alleles of ADH1B, ADH1C or ALDH2. Conclusions Poor OH and DC seem to be independent risk factors for UADT because corresponding risk estimates remain substantially elevated after detailed adjustment for multiple confounders. Whether mouthwash use may entail some risk through the alcohol content in most formulations on the market remains to be fully clarified. © 2014 Elsevier Ltd. All rights reserved.
Chuang S.-C.,Imperial College London |
Chuang S.-C.,International Agency for Research on Cancer IARC |
Jenab M.,International Agency for Research on Cancer IARC |
Heck J.E.,University of California at Los Angeles |
And 61 more authors.
Cancer Causes and Control | Year: 2012
We investigated the association between diet and head and neck cancer (HNC) risk using data from the International Head and Neck Cancer Epidemiology (INHANCE) consortium. The INHANCE pooled data included 22 case-control studies with 14,520 cases and 22,737 controls. Center-specific quartiles among the controls were used for food groups, and frequencies per week were used for single food items. A dietary pattern score combining high fruit and vegetable intake and low red meat intake was created. Odds ratios (OR) and 95% confidence intervals (CI) for the dietary items on the risk of HNC were estimated with a two-stage random-effects logistic regression model. An inverse association was observed for higher-frequency intake of fruit (4th vs. 1st quartile OR = 0.52, 95% CI = 0.43-0.62, p trend < 0.01) and vegetables (OR = 0.66, 95% CI = 0.49-0.90, p trend = 0.01). Intake of red meat (OR = 1.40, 95% CI = 1.13-1.74, p trend = 0.13) and processed meat (OR = 1.37, 95% CI = 1.14-1.65, p trend < 0.01) was positively associated with HNC risk. Higher dietary pattern scores, reflecting high fruit/vegetable and low red meat intake, were associated with reduced HNC risk (per score increment OR = 0.90, 95% CI = 0.84-0.97). © 2011 Springer Science+Business Media B.V.
Franceschi S.,International Agency for Research on Cancer |
Lise M.,Aviano Cancer Center |
Trepo C.,French Institute of Health and Medical Research |
Berthillon P.,French Institute of Health and Medical Research |
And 42 more authors.
Cancer Epidemiology Biomarkers and Prevention | Year: 2011
Background: Case-control studies suggested a moderate, but consistent, association of hepatitis C virus (HCV) infection with lymphoid tissue malignancies, especially non-Hodgkin lymphoma (NHL). More limited data suggested that hepatitis B virus (HBV) infection might also be associated with NHL. However, prospective studies on the topic are few. Methods: A nested case-control study was conducted in eight countries participating in the EPIC prospective study. Seven hundred thirty-nine incident cases of NHL, 238 multiple myeloma (MM), and 46 Hodgkin lymphoma (HL) were matched with 2,028 controls. Seropositivity to anti-HCV, anti-HBc, and HBsAg was evaluated and conditional logistic regression was used to estimate odds ratios (OR) and corresponding 95% confidence intervals (CI) for NHL, MM, or HL, and their combination. Results: Anti-HCV seropositivity among controls in different countries ranged from 0% to 5.3%; HBsAg from 0% to 2.7%; and anti-HBc from 1.9% to 45.9%. Similar nonsignificant associations were found with seropositivity to HBsAg for NHL (OR = 1.78; 95% CI: 0.78-4.04), MM (OR = 4.00; 95% CI: 1.00-16.0), and HL (OR = 2.00; 95% CI: 0.13-32.0). The association between HBsAg and the combination of NHL, MM, and HL (OR = 2.21; 95% CI: 1.124.33) was similar for cancer diagnosed less than 3 and 3 or more years after blood collection. No significant association was found between anti-HCV and NHL, MM, or HL risk, but the corresponding CIs were very broad. Conclusions: Chronic HBV infection may increase the risk of lymphoid malignancies among healthy European volunteers. ©2011 American Association for Cancer Research.
Dondog B.,International Agency for Research on Cancer |
Lise M.,Aviano Cancer Center |
Baldandorj B.,National Center for Communicable Diseases |
Franceschi S.,International Agency for Research on Cancer
European Journal of Cancer Prevention | Year: 2011
The incidence of hepatocellular carcinoma (HCC) in Mongolia is far higher than that of any other cancer in the country, and among the highest worldwide. The relative importance of infection with hepatitis B virus (HBV) and hepatitis C virus (HCV) is unclear. We reviewed (i) medical records for 963 patients with HCC and 941 patients with cirrhosis admitted for the first time to the National Cancer Center of Mongolia and the National Center for Communicable Diseases, respectively, from 2000 to 2009, and (ii) articles published from 1990 to 2010 on the seroprevalence of hepatitis B surface antigen (HBsAg) and antibodies against hepatitis C virus (anti-HCV) among individuals with and without liver disease. Among those with HCC, the seroprevalence of HBsAg, anti-HCV and dual infections was 50, 27 and 21%, respectively. Corresponding percentages among the patients with cirrhosis were 40, 39, and 20%. In both diseases, HCV infection was relatively more prevalent in women than in men and, in cirrhosis, in patients older than 45 years of age. In healthy individuals, from published articles, anti-HCV seroprevalence steadily increased with age (from 3% at age 0-5 years to 34% at age =50 years), whereas HBsAg seroprevalence stayed constant at about 8%. The future benefit of childhood vaccination against HBV in Mongolia will be undermined by the consequences of a severe HCV epidemic and a uniquely high burden of dual infections. © 2010 Wolters Kluwer Health.
PubMed | University of Newcastle, Regional Authority of Public Health, Brown University, New York University and 42 more.
Type: Journal Article | Journal: International journal of epidemiology | Year: 2016
Cigarette smoking is a major risk factor for head and neck cancer (HNC). To our knowledge, low cigarette smoking (<10 cigarettes per day) has not been extensively investigated in fine categories or among never alcohol drinkers.We conducted a pooled analysis of individual participant data from 23 independent case-control studies including 19660 HNC cases and 25566 controls. After exclusion of subjects using other tobacco products including cigars, pipes, snuffed or chewed tobacco and straw cigarettes (tobacco product used in Brazil), as well as subjects smoking more than 10 cigarettes per day, 4093 HNC cases and 13416 controls were included in the analysis. The lifetime average frequency of cigarette consumption was categorized as follows: never cigarette users, >0-3, >3-5, >5-10 cigarettes per day.Smoking >0-3 cigarettes per day was associated with a 50% increased risk of HNC in the study population [odds ratio (OR)=1.52, 95% confidence interval (CI): (1.21, 1.90). Smoking >3-5 cigarettes per day was associated in each subgroup from OR=2.01 (95% CI: 1.22, 3.31) among never alcohol drinkers to OR=2.74 (95% CI: 2.01, 3.74) among women and in each cancer site, particularly laryngeal cancer (OR=3.48, 95% CI: 2.40, 5.05). However, the observed increased risk of HNC for low smoking frequency was not found among smokers with smoking duration shorter than 20 years.Our results suggest a public health message that low frequency of cigarette consumption contributes to the development of HNC. However, smoking duration seems to play at least an equal or a stronger role in the development of HNC.
Gaudet M.M.,Yeshiva University |
Olshan A.F.,University of North Carolina at Chapel Hill |
Chuang S.-C.,International Agency for Research on Cancer |
Chuang S.-C.,Imperial College London |
And 39 more authors.
International Journal of Epidemiology | Year: 2010
Background: Head and neck cancer (HNC) risk is elevated among lean people and reduced among overweight or obese people in some studies; however, it is unknown whether these associations differ for certain subgroups or are influenced by residual confounding from the effects of alcohol and tobacco use or by other sources of biases. Methods: We pooled data from 17 case-control studies including 12 716 cases and the 17 438 controls. Odds ratios (ORs) and 95% confidence intervals (CIs) were estimated for associations between body mass index (BMI) at different ages and HNC risk, adjusted for age, sex, centre, race, education, tobacco smoking and alcohol consumption. Results: Adjusted ORs (95% CIs) were elevated for people with BMI at reference (date of diagnosis for cases and date of selection for controls) ≤18.5 kg/m2 (2.13, 1.75-2.58) and reduced for BMI >25.0-30.0 kg/m2 (0.52, 0.44-0.60) and BMI ≥30 kg/m2 (0.43, 0.33-0.57), compared with BMI >18.5-25.0 kg/m2. These associations did not differ by age, sex, tumour site or control source. Although the increased risk among people with BMI ≤18.5 kg/m2 was not modified by tobacco smoking or alcohol drinking, the inverse association for people with BMI > 25 kg/m2 was present only in smokers and drinkers. Conclusions: In our large pooled analysis, leanness was associated with increased HNC risk regardless of smoking and drinking status, although reverse causality cannot be excluded. The reduced risk among overweight or obese people may indicate body size is a modifier of the risk associated with smoking and drinking. Further clarification may be provided by analyses of prospective cohort and mechanistic studies. © The Author 2010; Published by Oxford University Press on behalf of the International Epidemiological Association. All rights reserved.
Galeone C.,University of Milan |
Tavani A.,University of Milan |
Pelucchi C.,University of Milan |
Turati F.,University of Milan |
And 20 more authors.
Cancer Epidemiology Biomarkers and Prevention | Year: 2010
Background: Only a few studies have explored the relation between coffee and tea intake and head and neck cancers, with inconsistent results. Methods: We pooled individual-level data from nine case-control studies of head and neck cancers, including 5,139 cases and 9,028 controls. Logistic regression was used to estimate odds ratios (OR) and 95% confidence intervals (95% CI), adjusting for potential confounders. Results: Caffeinated coffee intake was inversely related with the risk of cancer of the oral cavity and pharynx: the ORs were 0.96 (95% CI, 0.94-0.98) for an increment of 1 cup per day and 0.61 (95% CI, 0.47-0.80) in drinkers of >4 cups per day versus nondrinkers. This latter estimate was consistent for different anatomic sites (OR, 0.46; 95% CI, 0.30-0.71 for oral cavity; OR, 0.58; 95% CI, 0.41-0.82 for oropharynx/ hypopharynx; and OR, 0.61; 95% CI, 0.37-1.01 for oral cavity/pharynx not otherwise specified) and across strata of selected covariates. No association of caffeinated coffee drinking was found with laryngeal cancer (OR, 0.96; 95% CI, 0.64-1.45 in drinkers of >4 cups per day versus nondrinkers). Data on decaffeinated coffee were too sparse for detailed analysis, but indicated no increased risk. Tea intake was not associated with head and neck cancer risk (OR, 0.99; 95% CI, 0.89-1.11 for drinkers versus nondrinkers). Conclusions: This pooled analysis of case-control studies supports the hypothesis of an inverse association between caffeinated coffee drinking and risk of cancer of the oral cavity and pharynx. Impact: Given widespread use of coffee and the relatively high incidence and low survival of head and neck cancers, the observed inverse association may have appreciable public health relevance. ©2010 AACR.