Until the late-1980s, combination CDDP (or CBDCA)/cyclophosphamide (CPA) and CDDP (or CBDCA)/CPA/adriamycin (ADM) were the two most common choices for treating patients with ovarian cancer. In the last several years, the identification of paclitaxel (TXL) activity in previously treated ovarian cancer patients has led to its incorporation into primary chemotherapy regimens for newly diagnosed patients. Based on prospective trials by the Gynecologic Oncology Group (GOG) and European-Canadian investigators, CDDP/TXL became the new standard regimen in 1998. Now, three randomized trials by the GOG (158), AGO, and a Dutch group comparing CDDP/TXL and carboplatin (CBDCA)/TXL are also in progress. These study groups recommended that CBDCA/TXL be used as the standard regimen in 1999 because CBDCA/TXL is less toxic, allows a better quality of life during treatment, and results in an equivalent response rate and progression-free survival. In patients with high-risk corpus cancer, clinical trials comparing platinum/TXL or platinum/ADM/TXL versus platinum/ADM are in progress. In Japan, CPT-11/CDDP has been shown to be an effective and safe regimen in patients with advanced ovarian cancer, especially clear cell carcinoma and cervical cancer.