TY - JOUR
T1 - Maintenance therapy with continuous or switch strategy in advanced non-small cell lung cancer
T2 - A systematic review and meta-analysis
AU - Zhang, Xinji
AU - Zang, Jiajie
AU - Xu, Jinfang
AU - Bai, Chong
AU - Qin, Yingyi
AU - Liu, Ke
AU - Wu, Cheng
AU - Wu, Meijing
AU - He, Qian
AU - Zhang, Shanshan
AU - Wei, Lixin
AU - He, Jia
N1 - Funding Information:
Funding/Support: Editorial support in the final preparation of the manuscript was provided by Editage, which was funded by the Ministry of Science and Technology of China [Grants 2009ZX09312-025, 2008ZX09312-007 ].
PY - 2011/7/1
Y1 - 2011/7/1
N2 - 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.
AB - 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.
UR - http://www.scopus.com/inward/record.url?scp=79960414995&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=79960414995&partnerID=8YFLogxK
U2 - 10.1378/chest.10-2745
DO - 10.1378/chest.10-2745
M3 - Review article
C2 - 21436247
AN - SCOPUS:79960414995
VL - 140
SP - 117
EP - 126
JO - Diseases of the chest
JF - Diseases of the chest
SN - 0012-3692
IS - 1
ER -