tobacco smoking – Oral Cancer News

Cessation of alcohol drinking, tobacco smoking and the reversal of head and neck cancer risk

Source: International Journal of EpidemiologyAccepted September 28, 2008 Abstract 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. This news story was resourced by the [...]

Charlotte Parker2013-07-03T16:25:24-07:00July, 2013|Oral Cancer News|

Tobacco Smoking and Increased Risk of Death and Progression for Patients With p16-Positive and p16-Negative Oropharyngeal Cancer

Source: Journal of Clinical Oncology Purpose Tobacco smoking is associated with oropharynx cancer survival, but to what extent cancer progression or death increases with increasing tobacco exposure is unknown. Patients and Methods Patients with oropharynx cancer enrolled onto a phase III trial of radiotherapy from 1991 to 1997 (Radiation Therapy Oncology Group [RTOG] 9003) or of chemoradiotherapy from 2002 to 2005 (RTOG 0129) were evaluated for tumor human papillomavirus status by a surrogate, p16 immunohistochemistry, and for tobacco exposure by a standardized questionnaire. Associations between tobacco exposure and overall survival (OS) and progression-free survival (PFS) were estimated by Cox proportional hazards models. Results Prevalence of p16-positive cancer was 39.5% among patients in RTOG 9003 and 68.0% in RTOG 0129. Median pack-years of tobacco smoking were lower among p16-positive than p16-negative patients in both trials (RTOG 9003: 29 v 45.9 pack-years; P = .02; RTOG 0129: 10 v 40 pack-years; P < .001). After adjustment for p16 and other factors, risk of progression (PFS) or death (OS) increased by 1% per pack-year (for both, hazard ratio [HR], 1.01; 95% CI, 1.00 to 1.01; P = .002) or 2% per year of smoking (for both, HR, 1.02; 95% CI, 1.01 to 1.03; P < .001) in both trials. In RTOG 9003, risk of death doubled (HR, 2.19; 95% CI, 1.46 to 3.28) among those who smoked during radiotherapy after accounting for pack-years and other factors, and risk of second primary tumors increased by 1.5% per pack-year (HR, 1.015; 95% CI, 1.005 to [...]

Charlotte Parker2012-06-11T10:02:05-07:00June, 2012|Oral Cancer News|

Tobacco Smoking and Increased Risk of Death and Progression for Patients With p16-Positive and p16-Negative Oropharyngeal Cancer

Source: Journal of Clinical Oncology Abstract Purpose Tobacco smoking is associated with oropharynx cancer survival, but to what extent cancer progression or death increases with increasing tobacco exposure is unknown. Patients and methods Patients with oropharynx cancer enrolled onto a phase III trial of radiotherapy from 1991 to 1997 (Radiation Therapy Oncology Group [RTOG] 9003) or of chemoradiotherapy from 2002 to 2005 (RTOG 0129) were evaluated for tumor human papillomavirus status by a surrogate, p16 immunohistochemistry, and for tobacco exposure by a standardized questionnaire. Associations between tobacco exposure and overall survival (OS) and progression-free survival (PFS) were estimated by Cox proportional hazards models. Results Prevalence of p16-positive cancer was 39.5% among patients in RTOG 9003 and 68.0% in RTOG 0129. Median pack-years of tobacco smoking were lower among p16-positive than p16-negative patients in both trials (RTOG 9003: 29 v 45.9 pack-years; P = .02; RTOG 0129: 10 v 40 pack-years; P < .001). After adjustment for p16 and other factors, risk of progression (PFS) or death (OS) increased by 1% per pack-year (for both, hazard ratio [HR], 1.01; 95% CI, 1.00 to 1.01; P = .002) or 2% per year of smoking (for both, HR, 1.02; 95% CI, 1.01 to 1.03; P < .001) in both trials. In RTOG 9003, risk of death doubled (HR, 2.19; 95% CI, 1.46 to 3.28) among those who smoked during radiotherapy after accounting for pack-years and other factors, and risk of second primary tumors increased by 1.5% per pack-year (HR, 1.015; 95% CI, 1.005 [...]

Charlotte Parker2012-05-08T09:07:47-07:00May, 2012|Oral Cancer News|

High Interest in HPV and EGRF When Referring to Head and Neck Cancer

Source: MedScape Today May 12, 2011 (London, United Kingdom) — The hottest topic in head and neck cancers is the role of human papillomavirus (HPV) in the disease, although there is also a lot interest in treatment with EGRF inhibitors, especially the second-generation products, according to an expert here at the European Society for Therapeutic Radiology and Oncology 11th Biennial Conference. HPV has only been associated with head and neck cancer in the last few years, but it is now clear that patients who are positive for the virus have a better prognosis, said Cai Grau, MD, DMSC, professor of oncology at Aarhus University Hospital, Denmark. He chaired a session during which both hot topics were discussed. "These patients have a better prognosis, irrespective of treatment, and their risk of a second cancer is virtually zero," added session participant Lisa Licitra, MD, medical oncologist at the Istituto Nazionale per lo Studio e la Cura dei Tumori in Milan, Italy. However, there is a difference between patients in the United States and those in Europe with regard to risk, she told meeting attendees. For American patterns, Dr. Licitra cited the analysis published last year in the New England Journal of Medicine (2010;363:24-35), which reported a risk model for death from oropharyngeal squamous cell carcinoma on the basis of HPV status, pack-years of tobacco smoking, and tumor and nodal stage. In this 266-patient cohort, 43% were low risk, 30% were intermediate risk, and 27% were high risk. Dr. Licitra reported that when [...]

Oral Cancer Foundation News Team - A2011-05-12T10:12:51-07:00May, 2011|Oral Cancer News|