JOURNAL ARTICLE

An indirect comparison of the efficacy of bevacizumab plus carboplatin and paclitaxel versus pemetrexed with cisplatin in patients with advanced or recurrent non-squamous adenocarcinoma non-small cell lung cancer

Mark J C Nuijten, Rick Aultman, Javier de Castro Carpeño, Alain Vergnenègre, Christos Chouaid, Stefan Walzer, Uwe Siebert
Current Medical Research and Opinion 2011, 27 (11): 2193-201
21970659

OBJECTIVE: There are two new treatment options available for the treatment of adenocarcinoma histology non-small cell lung cancer (NSCLC) which offer improved benefit in terms of progression-free (PFS) and overall survival (OS) over chemotherapy. Both bevacizumab and pemetrexed when combined with chemotherapy significantly increase PFS and OS in patients with advanced NSCLC versus chemotherapy alone. The aim of this analysis was to compare the efficacy for patients with non-squamous adenocarcinoma NSCLC treated with bevacizumab, carboplatin and paclitaxel (BCP) to pemetrexed and cisplatin (PC) by using indirect comparison (ITC) methodology.

EXPERIMENTAL DESIGN: In the absence of head-to-head trials, ITC was performed on patients with adenocarcinoma histology non-squamous NSCLC to compare the relative benefit of first-line therapies BCP vs. PC by hazard ratios (HR). Subsequently, these HRs were used in a decision-analytic Markov model with a lifelong time horizon to extrapolate the long-term effectiveness of the two treatments.

RESULTS: ITC estimated HRs for the primary endpoints in the bevacizumab study E4599 showed that BCP treatment in non-squamous adenocarcinoma NSCLC patients resulted in a BCP HR of 0.82 versus PC. The long-term predictions from the Markov model yielded a mean survival of 1.48 years (95% CI 1.34, 1.62 years) (or 17.7 months) for BCP compared with 1.29 years (95% CI 1.16, 1.42 years) (or 15.4 months) for PC.

CONCLUSIONS: Based on our decision analysis, triplet BCP targeted therapy in patients with advanced non-squamous adenocarcinoma NSCLC compared with doublet PC chemotherapy results in improved expected values for overall long-term survival. Therefore, from the efficacy perspective, bevacizumab in combination with platinum-based chemotherapy can be considered as the targeted therapy of choice for patients with advanced non-squamous adenocarcinoma NSCLC.

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