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Phase II study of 96-hr continuous-infusion etoposide and doxorubicin with bolus cyclophosphamide in refractory epithelial ovarian cancer.

Effective salvage chemotherapy for patients with ovarian cancer who have failed platinum- and taxane-based regimens has not been identified. It has been reported that prolonged infusions of chemotherapy may be active in some malignancies which have become refractory to bolus treatments. We evaluated a regimen of 96-hr continuous-infusion doxorubicin (10 mg/m2/24 hr), etoposide (50 mg/m2/24 hr), and bolus cyclophosphamide (750 mg/m2) administered every 21 days to patients with ovarian cancer who had previously been treated with paclitaxel and a platinum compound. Nineteen women were treated, 15 of whom had platinum-refractory cancer. Six of the first 9 experienced a neutropenic fever after the first treatment cycle, and therefore all subsequent patients received prophylactic granulocyte-colony-stimulating factor. Other significant toxicities included hand and foot syndrome (1 patient) and mucositis (4 patients). There was one partial response in a patient with platinum-sensitive disease. We conclude that this regimen causes significant myelosuppression and does not have major activity in heavily pretreated patients with ovarian cancer.