The efficacy and safety of alectinib in the treatment of ALK+ NSCLC: a systematic review and meta-analysis
Received 6 November 2017
Accepted for publication 7 January 2018
Published 1 March 2018 Volume 2018:11 Pages 1105—1115
Checked for plagiarism Yes
Review by Single-blind
Peer reviewer comments 2
Editor who approved publication: Prof. Dr. Jianmin Xu
Junsheng Fan,1,2,* Zengfei Xia,1,* Xiaoli Zhang,1,* Yuqing Chen,1 Ruolan Qian,1 Sihan Liu,1 Danming You,1 Jian Zhang,1 Peng Luo1
1Department of Oncology, Zhujiang Hospital of Southern Medical University, Guangzhou, China; 2Department of Respiratory Medicine, Shanghai Tenth People’s Hospital, Tongji University, Shanghai, China
*These authors contributed equally to this work
Background: Alectinib is a second-generation anaplastic lymphoma kinase (ALK) inhibitor approved by the US Food and Drug Administration to treat crizotinib-refractory non-small cell lung cancer. We performed this meta-analysis to synthesize the results of different clinical trials to evaluate the efficacy and safety of alectinib.
Methods: A search of 3 databases, including PubMed, Web of Science, and the Cochrane Library, was performed from the inception of each database through September 5, 2017. We have pooled the overall response rate (ORR), disease control rate, progression-free survival, and intracranial ORR to evaluate the efficacy of alectinib. Discontinuation rate, rate of dose reduction or interruption due to adverse events as well as the incidence of several adverse events were aggregated to evaluate its safety.
Results: A total of 8 studies with 626 patients have been included in our study. The pooled efficacy parameters are as follows: ORR 70% (95% CI: 57% to 82%), disease control rate 88% (95% CI: 82% to 94%), progression-free survival 9.36 months (95% CI: 7.38% to 11.34%), and intracranial ORR 52% (95% CI: 45% to 59%). ALK inhibitor-naïve patients tend to have better responses than crizotinib-pretreated patients. The aggregate discontinuation rate is 7% (95% CI: 4% to 10%), and the pooled rate of dose reduction or interruption is 33% (95% CI: 24% to 42%). The incidences of most adverse events were relatively low, while the incidences of 2 frequently reported adverse events, myalgia (18%) and anemia (25%), were even higher than with the first-generation ALK inhibitor crizotinib.
Conclusion: Generally, alectinib is a drug with preferable efficacy and tolerable adverse effects, and it is suitable for the treatment of intracranial metastases.
Keywords: alectinib, anaplastic lymphoma kinase, ALK, ALK inhibitor, non-small cell lung cancer, NSCLC, meta-analysis
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