Statins associate with improved mortality among patients with certain histological subtypes of lung cancer.
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ABSTRACT: OBJECTIVES:To measure the association between statin exposure and mortality in lung cancer patients belonging to different categories of histological subtype. MATERIALS AND METHODS:A cohort of 19,974 individuals with incident lung cancer between 2007 and 2011 was identified using the SEER-Medicare linked database. Statin exposure both pre- and post-diagnosis was analyzed to identify a possible association with cancer-specific mortality in patients stratified by histological subtype. Intention-to-treat analyses and time-dependent Cox regression models were used to calculate hazard ratios and 95% confidence intervals (95% CIs) corresponding to statin exposure both pre- and post-diagnosis, respectively. RESULTS:Overall baseline statin exposure was associated with a decrease in mortality risk for squamous-cell carcinoma patients (HR?=?0.89, 95% CI?=?0.82-0.96) and adenocarcinoma patients (HR?=?0.87, 95% CI?=?0.82-0.94), but not among those with small-cell lung cancer. Post-diagnostic statin exposure was associated with prolonged survival in squamous-cell carcinoma patients (HR?=?0.68, 95% CI?=?0.59-0.79) and adenocarcinoma patients (HR?=?0.78, 95% CI?=?0.68-0.89) in a dose-dependent manner. CONCLUSION:There is consistent evidence indicating that baseline or post-diagnostic exposure to simvastatin and atorvastatin is associated with extended survival in non-small-cell lung cancer subtypes. These results warrant further randomized clinical trials to evaluate subtype-specific effects of certain statins in patient cohorts with characteristics similar to those examined in this study.
SUBMITTER: Ung MH
PROVIDER: S-EPMC6296763 | biostudies-literature | 2018 Dec
REPOSITORIES: biostudies-literature
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