A systematic review comparing cisplatin and carboplatin plus paclitaxel-based chemotherapy for recurrent or metastatic cervical cancer

Introduction: The prognosis of advanced/recurrent cervical cancer patients is generally poor with 1-year survival ranging between 15 and 20%. Cisplatin (CDDP) based treatments are considered the most effective regimens; unfortunately toxicity is an issue in a population in which the treatment remains palliative in the finality. Carboplatin (CBDCA), with its more favorable non toxicity profile and the convenience of outpatient administration, may be a suitable alternative to CDDP in combination regimens.

Materials and methods: We performed a systematic review of the literature comparing CDDP and CBDCA based chemotherapy for advanced cervical cancer (recurrent, persistent or metastatic disease). Only studies that met the following criteria were considered for the present review: 1) patients treated with CDDP/paclitaxel or CBDCA/paclitaxel combinations as first line chemotherapy for metastatic disease; 2) one or more of the following data available: overall response rate (RR), progression free survival (PFS) or time to progression (TTP), overall survival (OS); 3) single-arm retrospective or prospective study; and 4) at least 20 patients enrolled.

Results: 17 eligible studies comprehensive of 1181 patients were included in the final analysis. The objective RR was 48.5% for CBDCA and 49.3% for CDDP-based chemotherapy. Median PFS for CDDP and CBDCA-based treatments was 6.9months and 5months respectively (p=0.03); the corresponding figures for median OS were 12.87 and 10months respectively (p=0.17).

Discussion: Our study indicates that CBDCA may represent an attractive and valid alternative to the more toxic and equally effective CDDP in the treatment of advanced or recurrent cervical cancer.