Long term analysis of survival in the European randomized trial comparing vinorelbine/cisplatin to vindesine/cisplatin and vinorelbine alone in advanced non-small cell lung cancer

In the period 1989-1991, 612 patients with inoperable stage IIIA/B and IV non-small cell lung cancer (NSCLC) were randomized in a phase III trial comparing three chemotherapy regimens. Survival data at five and six years of follow-up confirm the overall benefit of treatment with a combination of vinorelbine and cisplatin compared to vindesine plus cisplatin or vinorelbine alone. Of the 612 patients randomized at the start of the study, 17 have survived beyond five years. Of these patients, eight had entered the trial with metastatic disease. Multivariate analysis to detect prognostic factors suggested a possible interaction between the effect of having cisplatin in the chemotherapy received and baseline performance status. Subgroup analysis subsequently confirmed that the survival benefit of the vinorelbine plus chemotherapy regimen is evident only in patients with initial World Health Organization performance status (PS) of 0-1. Among these patients, the one-year survival rate is 38% for the vinorelbine/cisplatin arm, 29% for vindesine/cisplatin and 34% for vinorelbine alone. The corresponding figures for median survival are 43, 33 and 36 weeks. Among inoperable NSCLC patients with a PS of 2, who appear from this trial not to have benefited from the presence of cisplatin in their chemotherapy, use of single agent vinorelbine is an appropriate treatment option.