Phase II Trial of Bevacizumab with Dose-dense Paclitaxel As First-line Treatment in Patients with Advanced Ovarian Cancer
Overview
Authors
Affiliations
Objectives: To assess the tolerability and efficacy of bevacizumab with carboplatin and weekly paclitaxel as first-line adjuvant therapy for advanced stage ovarian cancer.
Methods: After IRB approval, this single-institution, phase II study enrolled patients with stage III or IV epithelial ovarian cancer after primary cytoreductive surgery to treatment with carboplatin (AUC 5), weekly paclitaxel (80mg/m2), and bevacizumab (15mg/kg) every 3weeks for at least 6cycles. The primary endpoint was tolerability of at least 4cycles of therapy, with a target treatment success rate of >60%. Secondary endpoints included progression-free survival (PFS) and response rate. Plasma biomarkers were analyzed by the multiplex ELISA assays.
Results: Thirty-three patients were enrolled with 30 evaluable patients receiving at least one cycle of combination treatment. Twenty-three patients (77%) were able to complete at least 4cycles of therapy per protocol, and the posterior probability that the treatment success rate is >60% is 0.77. Twenty-one patients (70%) were able to complete ≥6cycles of therapy. Median PFS was 22.4months for patients with optimal (R0) compared to 16.9months for optimal≤1cm (HR 1.71, 95% CI 0.58-4.98, p=0.33), and 16.9months for suboptimal>1cm (HR 3.75, 95% CI 1.05-13.34, p=0.04) disease. Increases in mean Flt-3L was significantly higher in responders versus non-responders (83.4 vs. 28pg/mL, p=0.05).
Conclusions: Adjuvant bevacizumab with dose-dense chemotherapy is associated with acceptable toxicity and a high likelihood of completing 4cycles of therapy. Dynamic changes in Flt-3L may represent a predictive marker to treatment response.
Kochi Y, Hosoya S, Yanaihara N, Nagata C, Honda R, Shimazaki M Int J Clin Oncol. 2024; 29(9):1364-1379.
PMID: 38865025 DOI: 10.1007/s10147-024-02559-3.
Komazaki H, Takahashi K, Tanabe H, Shoburu Y, Kamii M, Tsuda A J Gynecol Oncol. 2024; 35(6):e76.
PMID: 38576344 PMC: 11543256. DOI: 10.3802/jgo.2024.35.e76.
Chen Y, Yang L, Wang C, Wang C Oncol Lett. 2023; 26(6):502.
PMID: 37920438 PMC: 10618930. DOI: 10.3892/ol.2023.14089.
Guo N, Lin G, Shi X Pak J Med Sci. 2022; 38(7):1973-1979.
PMID: 36246715 PMC: 9532676. DOI: 10.12669/pjms.38.7.5323.
Zhang Z, Zhang S, Lin B, Wang Q, Nie X, Shi Y Front Oncol. 2022; 12:974573.
PMID: 36110967 PMC: 9468930. DOI: 10.3389/fonc.2022.974573.