Randomized Phase III Crossover Trial of Chemotherapy (Doxorubicin/Cisplatin/Paclitaxel and G-CSF) Versus Hormonal Therapy (Tamoxifen/Megestrol Acetate) in Patients With Stage III & IV or Recurrent Endometrial Cancer

OBJECTIVES:

• Compare the progression-free survival and response of patients with stage III or IV or recurrent endometrial cancer treated with doxorubicin, cisplatin, paclitaxel, and filgrastim (G-CSF) vs tamoxifen and megestrol.
• Compare the survival of patients treated with these regimens.
• Determine if progesterone receptor status provides information on whether patients are more likely to benefit from chemotherapy.
• Compare the toxicity profiles of these treatment regimens in these patients.
• Compare the quality of life of patients treated with these regimens.

OUTLINE: This is a randomized, cross-over, multicenter study. Patients are stratified according to progesterone receptor status (negative vs positive). Patients are randomized to 1 of 2 treatment arms.

• Arm I:Patients receive chemotherapy comprising doxorubicin IV over 15-30 minutes followed by cisplatin IV over 1 hour on day 1; paclitaxel IV over 3 hours on day 2; and filgrastim (G-CSF) subcutaneously beginning on day 3 and continuing for 10 days. Chemotherapy repeats every 21 days for up to 7 courses in the absence of disease progression or unacceptable toxicity.
• At time of disease progression, patients cross-over to hormonal therapy as in arm II.
• Arm II: Patients receive hormonal therapy comprising oral megestrol twice daily on weeks 1-3 followed by oral tamoxifen twice daily on weeks 4-6. Hormonal therapy repeats every 6 weeks in the absence of disease progression or unacceptable toxicity.

At time of disease progression, if patients have not previously been enrolled on arm I, patients cross-over to receive chemotherapy as in arm I.