In Germany there are two established therapy regimes for platin sensitive ovarian cancer: the combination of carboplatin and paclitaxel as well as the combination of carboplatin with gemcitabine. Choice of therapy is individual due to missing randomized comparisons between the regimes. Topotecan has shown good efficacy in second-line therapy of ovarian cancer as well as a good, especially, non-hematoxic toxicity profile. Several phase II-studies have demonstrated a synergistic effect of topotecan in combination with carboplatin exhibiting good efficacy and tolerability.