A phase II trial of vinblastine in patients with advanced or recurrent endometrial carcinoma. A Southwest Oncology...

Forty-one patients with advanced or recurrent endometrial carcinoma no longer amenable to control with surgery and/or radiotherapy were entered into study. Five of these were ineligible for study. One eligible patient never received any treatment, another had no baseline information recorded; these were thus inevaluable. The remaining 34 patients received continuous infusion vinblastine (1.5 mg/m2) as a 24-h infusion daily for 5 days every 3 weeks. One complete and 3 partial responses were observed among these 34 patients, for an overall objective response rate of 12%. Two of these 4 responders are deceased, and 2 remain alive with disease at 18 and 22 months, respectively. The most common toxicity noted was leukopenia in 22 patients (65%); 12 (35%) of these had severe or life-threatening leukopenia (less than 2,000 WBC/microliter). Fourteen of the 34 (41%) experienced nausea and vomiting. Other adverse effects were less common. Overall, 15 of the 34 patients (44%) experienced severe or life-threatening toxicity. In this trial, continuous infusion vinblastine was toxic and had minimal to moderate efficacy at best. These facts suggest that the drug at the dose and schedule tested has no role in the management of advanced or recurrent endometrial carcinoma.