A phase II study with teniposide (VM26) in patients with progressed or relapsed small cell lung cancer (SCLC)

Sixteen patients with advanced small cell lung cancer who relapsed or progressed under first-line therapy, were treated with second-line chemotherapy consisting of: teniposide, 60 mg/m2, i.v. days 1-5, every 3 weeks until further progression. The response rate was: 3 minor responses, 6 stable disease, 5 progressive disease, 1 early death and 1 not evaluable. After the introduction of teniposide, median survival was 4.5 (range 1-11) months, compared to the median survival (2 months, range 1-11) observed in 40 contemporary patients of our series, who relapsed or progressed and subsequently received no treatment. The assessment of the difference was significant: chi-square = 4.05, P less than 0.05. In addition a particular comparison was performed with 15/40 patients who matched according to the major predictive parameters of disease. These patients experienced 2 months (range 1-7) of median survival which was significantly shorter than that of the teniposide treated group (chi-square = 4.48, P less than 0.05). On these bases, teniposide appeared to be effective, but the small size of the study suggests caution in evaluating the results.