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Effect of chemotherapy delays and dose reductions on progression free and overall survival in the treatment of epithelial ovarian cancer
Authors:Nagel C I  Backes F J  Hade E M  Cohn D E  Eisenhauer E L  O'Malley D M  Fowler J M  Copeland L J  Salani R
Institution:
  • a University of Texas Southwestern, Dallas, TX, USA
  • b The Ohio State University Medical Center, Columbus,OH, USA
  • Abstract:

    Introduction

    Hematologic, gastrointestinal, and neurologic complications are common side effects of the platinum and taxane-based chemotherapy used in the primary treatment of epithelial ovarian cancer (EOC). These side effects and the impact of the resultant chemotherapy dose modification on disease free interval have not been extensively studied. The goal of this study was to determine the effect of chemotherapy delays and dose reductions on progression free survival (PFS) and overall survival (OS).

    Methods

    A review of patients with primary epithelial ovarian, peritoneal, and fallopian tube carcinoma treated between 1/2000 and 12/2007 was performed. Inclusion criteria were advanced stage disease and first line chemotherapy with a platinum and taxane regimen. Cox proportional hazard models were used to determine the effect of chemotherapy reductions and delays on PFS and OS.

    Results

    One hundred and fifty seven patients met the inclusion criteria. Patients were divided into four groups: no delays or reductions (48%), delay only (27%), reduction only (8%), and both delay and reduction (18%). The mean number of delays/reductions per patient was 1.1 (range = 0-5) and therapy was delayed a mean of 8 days. The most common reasons for delays/reductions were neutropenia (n = 51), thrombocytopenia (n = 45), and neuropathy (n = 18). There were no differences detected in PFS or OS between groups.

    Conclusions

    There were no differences detected in survival between patients who required dose adjustments and treatment delays and those who did not. The lack of association between survival and chemotherapy alterations suggests that in specific circumstances patients with advanced ovarian cancer should have individualized treatment plans.
    Keywords:Ovarian cancer  Chemotherapy  Dose modifications
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