Sequence-dependent hematologic side effects of topotecan and cisplatin in persistent or recurrent cervical cancer

Abstract

Objective This retrospective study evaluates the efficacy and toxicity of topotecan, followed by cisplatin, in patients with persistent or recurrent cervical cancer. Methods Twenty-four patients were included in the study. Ninety-two cycles of chemotherapy were administered during the study period. Topotecan (0.75 mg/m 2) was administered as a 30-minute infusion on 3 consecutive days, and cisplatin was given intravenously at a dose of 50 mg/m 2 over 1 h on day 3 of every third week. Results The median number of cycles administered was 3, with a range of 1–8 cycles per patient. There were 4 (16.7%) complete responses, 3 (12.5%) partial responses, and 5 (20.8%) stable disease. All of the patients with a complete response had received palliative radiation or surgery for pain or an isolated solitary recurrence prior to chemotherapy. There were no treatment delays of > 7 days per cycle due to hematologic toxicity. There were 59 days of delay (average, 0.6 days per cycle) in 21 of 92 (22.8%) cycles and two episodes of dose reduction (cisplatin, 50% reduction) in 2 patients due to low creatinine clearance (30–60 mL/min). Overall, grade 3/4 anemia, thrombocytopenia, and neutropenia were experienced in 13.1%, 1.1%, and 18.5% of the courses, or 33.4%, 4.2%, and 45.8% of the patients, respectively. Conclusion Combination chemotherapy, consisting of topotecan on days 1–3 and cisplatin on day 3, showed a relatively low rate of hematologic toxicity, as compared with the regimen of topotecan on days 1–3 and cisplatin on day 1, as used in previous studies.