Abstract
Background
The current analysis aims to evaluate the impact of statin co-treatment on the survival of patients with metastatic pancreatic cancer.
Methods
This is a pooled analysis of de-identified patient data from two clinical trials (NCT01124786; NCT00844649). Overall and progression-free survival according to patient subsets (patients who received or who did not receive statins) were assessed through Kaplan–Meier analysis and log-rank test. Univariate and multivariate Cox regression analysis was performed to evaluate different factors potentially affecting overall and progression-free survival. Propensity score matching was performed to address heterogeneity in baseline characteristics of different subgroups of patients.
Results
A total of 797 patients were assessed in the current study; of which 156 patients received statins and 641 did not receive statins. Using Kaplan–Meier survival estimates, patients who received statins seem to have better overall and progression-free survival compared to patients who did not (P = 0.008; P < 0.001, respectively). In multivariate analysis for factors affecting overall survival, the following factors were associated with worse overall survival: worse performance status (P < 0.001), no statin use (P = 0.044) and multiple sites of metastatic disease (P = 0.023); likewise in multivariate analysis for factors affecting progression-free survival, the following factors were associated with worse progression-free survival: worse performance status (P < 0.001), gemcitabine elaidate chemotherapy (P = 0.015) and no statin use (P = 0.048). Following propensity score matching and using Kaplan–Meier estimates, statin use was also associated with better overall and progression-free survival (P = 0.005; P = 0.040, respectively).
Conclusion
Statin use seems to be associated with better overall survival among patients with metastatic pancreatic cancer treated with first-line chemotherapy. Prospective studies designed specifically to assess this potential effect of statins are needed.
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