High-intensity chemotherapy does not improve the survival rate of patients with small cell lung cancer (SCLC), a new Swiss study concludes.

Testing on 140 patients in a randomized trial showed no statistically significant differences in survival rate or tumor size between groups receiving either standard or high doses of chemo over a three-year period. The findings were published online April 8 in the Journal of the National Cancer Institute.

Researchers thought upping the amount of chemotherapy might help the patients live longer because laboratory data had suggested that higher doses kill SCLC cells resistant to standard doses.

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