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M. Bittoni
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OA04 - Epidemiology and Prevention of Lung Cancer (ID 370)
- Event: WCLC 2016
- Type: Oral Session
- Track: Epidemiology/Tobacco Control and Cessation/Prevention
- Presentations: 2
- Moderators:L. Petruželka, S. Shastri
- Coordinates: 12/05/2016, 11:00 - 12:30, Schubert 4
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OA04.05 - Chronic Inflammation, NSAIDS and the Risk of Lung Cancer Death (Abstract under Embargo until December 5, 7:00 CET) (ID 6166)
11:45 - 11:55 | Author(s): M. Bittoni
- Abstract
- Presentation
Background:
Chronic inflammation appears to heighten the risk of lung cancer and, reciprocally, agents that reduce inflammation have been found to reduce this risk. Nevertheless, few prospective studies have examined associations between lung cancer and the intake of nonsteroidal anti-inflammatory drugs (NSAIDs). In the current study, we examined associations between fatal lung cancer and NSAIDs using prospective data from the Third National Health and Nutrition Examination Study.
Methods:
Baseline data on smoking, NSAIDs and other lifestyle variables were collected for 10,735 participants during 1988-1994, and cause-specific mortality status was ascertained through probabilistic record matching using the National Death Index through 2006. Cox proportional hazards regression models were used to estimate hazard ratios (HRs) to quantify associations between NSAID use and lung cancer death, with adjustment for current smoking and other variables.
Results:
During 18 years of follow-up, 269 individuals died from lung cancer of which 252 (93.6%) reported a history of cigarette smoking. Since all but 17 of the 269 fatal lung cancer cases occurred among current or former smokers, estimates of NSAID effects were ascertained from a sub-cohort of 5,882 individuals who reported a history of past or current cigarette smoking. Multivariate regression models revealed that regular use of ibuprofen reduced the risk of lung cancer death by 48% (HR=0.52, 95% CI=0.33-0.82, P<0.01). Main effects of other compounds tested (aspirin or acetaminophen) were not statistically significant.
Conclusion:
Prospective data from NHANES III showed that among adults with a history of past or current smoking, ibuprofen intake was associated with a substantial (48%) reduction in the risk of dying from lung cancer. Effects of aspirin and acetaminophen were not statistically significant. These results suggest that regular use of certain NSAIDs may be beneficial for high-risk subgroups of smokers as a lung cancer prevention strategy.
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OA04.07 - Clinical Characteristics of Lung Adenocarcinoma in the Young: Results from the Genomics of Young Lung Cancer Study (ID 5578)
12:05 - 12:15 | Author(s): M. Bittoni
- Abstract
- Presentation
Background:
Background: Lung cancer is increasingly recognized as a heterogeneous disease comprised of genomically defined subtypes with distinct targetable genomic alterations. However, it is unknown whether established lung cancer risk factors differ between these genomically distinct subtypes. In this study of the genomics of young lung cancer (GoYLC), we present preliminary results of lifestyle risk factors by specific genomic alteration to better characterize lung cancer in the young.
Methods:
Methods: Beginning in July of 2014, patients diagnosed with a bronchogenic lung cancer under the age of 40 were recruited to the GoYLC study. Informed consent was obtained in-person and virtually (online), allowing patients to participate globally, regardless of proximity to study sites (https://www.openmednet.org/site/alcmi-goyl). To date, this study has accrued a total of 101 cases, of which 85 are adenocarcinoma (AC). Stage 4 AC is the focus of this analysis.
Results:
Results: Among the 63 stage 4 AC cases, the most common genomic alterations were ALK rearrangements (n=28; 44% of stage 4 AC cases) and EGFR mutations (n=17; 27%) while the other genomic alterations (n=18; 29%) include ROS1, BRCA2, HER2, P53, RET and ATM. The prevalence of active smoking and/or exposure to passive smoking was highest among those with ALK (64%), intermediate for those with EGFR (47%) and lowest for those with other genomic alterations (39%). However, the prevalence of only active smoking was lowest among those with ALK (28%), followed by EGFR (35%) and highest for those with other genomic alterations (39%). The majority of patients with ALK rearrangements or EGFR mutations reported no family history of lung cancer (82% and 88%, respectively), compared with 67% among those with other genomic alterations.
Conclusion:
Conclusion: These preliminary results suggest that lifestyle characteristics and family history in young lung cancer patients may differ by genomic alteration. Passive smoke exposure was more prevalent among those with ALK rearrangements or EGFR mutations. Those with other genomic alterations, albeit, a heterogeneous group, were least likely to be exposed to passive smoking and more likely to be active smokers. We are continuing to enroll participants and are expanding the epidemiologic characterization to all study patients to evaluate if risk factors also differ by tumor stage and histology (Data to be presented). Importantly, this analysis lays the groundwork for the development of our more comprehensive epidemiology of young lung cancer study that may identify potential lifestyle and environmental risk factors related to specific genomic alterations.
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