Autologous cytokine-induced killer cell immunotherapy in lung cancer: a phase II clinical study
Cancer Immunology, Immunotherapy, 05/17/2012

Li R et al. – The data suggested that CIK cell immunotherapy could improve the efficacy of conventional chemotherapy in non–small cell lung cancer (NSCLC) patients, and increased frequency of cytokine–induced killer (CIK) cell treatment could further enhance the beneficial effects.

• A paired study, with 87 stage I–IV NSCLC patients in each group, was performed.
• Patients received either chemotherapy (arm 2) or chemotherapy in combination with autologous CIK cell immunotherapy (arm 1).
• Progression-free survival (PFS) and overall survival (OS) were evaluated.

• Of the 87 paired patients, 50 had early-stage disease (stage I–IIIA) and 37 had advanced-stage disease (stage IIIB–IV).
• Among early-stage patients, the distribution of 3-year PFS rate and median PFS time showed no statistical difference between the two groups (p=0.259 and 0.093, respectively); however, the 3-year OS rate and median OS time in arm 1 were significantly higher than those in arm 2 (82 vs. 66 %; p=0.049 and 73 vs. 53months; p=0.006, respectively).
• Among the advanced-stage patients, the 3-year PFS and OS rates of arm 1 were significantly higher than those of arm 2 (6 vs. 3 %; p<0.001 and 31 vs. 3 %; p<0.001, respectively); the median PFS and OS times in arm 1 were also significantly longer than those in arm 2 (13 vs. 6 months; p=0.001 and 24 vs. 10months; p<0.001, respectively).
• Multivariate analyses indicated that the frequency of CIK cell immunotherapy was significantly associated with prolonged PFS (HR=0.91; 95 % CI 0.85–0.98; p=0.012) and OS (HR=0.83; 95 % CI, 0.74–0.93; p=0.001) in the arm 1.