Maintenance therapy with continuous or switch strategy in advanced non-small cell lung cancer: A systematic review and meta-analysis

Xinji Zhang, Jiajie Zang, Jinfang Xu, Chong Bai, Yingyi Qin, Ke Liu, Cheng Wu, Meijing Wu, Qian He, Shanshan Zhang, Lixin Wei, Jia He*

*Corresponding author for this work

Research output: Contribution to journalReview articlepeer-review

62 Scopus citations

Abstract

Background: Maintenance therapy for patients with non-small cell lung cancer (NSCLC) has gained extensive interest. Varying results for this treatment underpin the need for a synthesis of evidence. Methods: Trials investigating maintenance therapy with either a continuous or a switch strategy for patients with nonprogressing NSCLC compared with placebo or observation were identified. The primary outcome was overall survival(OS), and secondary outcomes included progressionfree survival(PFS) and toxicity. Results: Eight trials of 3,736 patients were included in the analysis. Switch maintenance therapy substantially improved OS compared with placebo or observation (hazard ratio [HR], 0.85; 95% CI, 0.79-0.92; P<.001). A similar trend of improved OS was found in continuous maintenance therapy, despite lacking statistical significance (HR, 0.88;95% CI, 0.74-1.04; P =.124). The interaction test suggested that the difference in OS between the two maintenance strategies was not statistically significant (P =.777). Clinically substantial and statistically significant improvement in PFS was found with both maintenance strategies(switch maintenance therapy HR, 0.67; 95% CI, 0.57-0.78; continuous maintenance therapy HR, 0.53; 95% CI, 0.43-0.65; interaction P =.128). Subgroup analyses revealed no statistically significant differences in OS or PFS between switch maintenance therapy with cytotoxic agents and that with tyrosine kinase inhibitor agents. Toxicity was greater in maintenance therapy. Conclusions: Maintenance therapy with either a continuous or a switch strategy significantly increases OS and PFS compared with placebo or observation. However, the benefits must be balanced against toxicity.

Original languageEnglish (US)
Pages (from-to)117-126
Number of pages10
JournalCHEST
Volume140
Issue number1
DOIs
StatePublished - Jul 1 2011

ASJC Scopus subject areas

  • Pulmonary and Respiratory Medicine
  • Critical Care and Intensive Care Medicine
  • Cardiology and Cardiovascular Medicine

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