Ovarian cancer is the third most common gynecological malignancy worldwide. Because of late, aspecific symptoms, the disease is usually diagnosed at an advanced stage. Most patients experience recurrence and die as a result of the disease within 5 years. Treatment is a combination of surgical debulking and systemic administered chemotherapy. Intra-peritoneal (IP) chemotherapy with is currently considered the most effective treatment. In patients with at least an optimal surgical debulking, this leads to an improvement in life expectancy from 50 to 66 months. IP administration of chemotherapeutic agents is still not common practice. Furthermore recent studies revealed that cancer cells express a variety of tumor antigens, which can be targeted by the immune system. Also ovarian cancer shows evidence of a role for the immune system in clinical outcome. Novel insights into the mechanism of action of chemotherapy indicate that the efficacy of chemotherapeutic interventions are dependent on the modulation of the immune system. The impression exists that since IP chemotherapy is used, relatively more recurrences outside the abdominal cavity are observed. As of yet, no studies have described pharmacokinetics and pharmacodynamics of IP administered cisplatin and paclitaxel in the blood circulation. The investigators propose to study the use of this aspiration fluid from the IP cavity as a biomarker for the efficacy of chemotherapy intervention, monitor the effect of chemotherapy on IP tumor cells in the peritoneal cavity and monitor the effect of chemotherapy on immune cells present in the IP cavity. As well the investigators propose to correlate the presence and amount of tumor cells in peritoneal fluid with the debulking efficacy and CA 125 levels. Secondary to this the investigators intend to determine the pharmacokinetics of cisplatin and paclitaxel when administered in the IP cavity in the central circulation (plasma) as well as in the peritoneal fluid. In this observational explorative study women, aged younger than 70 years, who will receive standard IP chemotherapy for advanced epithelial ovarian cancer, who are in an adequate physical and biochemical state to receive chemotherapy are included. Immunological cell counts, tumor marker, immunological cell pathway activation and plasma concentrations of cisplatinum and paclitaxel in venous blood and in fluid aspirated from the abdominal cavity will be measured.
Study Type
OBSERVATIONAL
Enrollment
15
Radboudumc
Nijmegen, Netherlands
RECRUITINGPrimary immunological endpoint: study the use of aspiration fluid from the IP cavity as a biomarker for the efficacy of chemotherapy intervention, measured by decrease in tumor cell count in IP fluid.
Time frame: Change in tumor cell counts between samples 15 min before and after administration of chemotherapy through completion of chemotherapy during 18 weeks
Primary pharmacokinetic endpoint: study pharmacokinetics of cisplatin (platinum unbound fraction) when administered in the IP cavity in plasma and in the peritoneal fluid.
Time frame: Change in platinum unbound fraction of cisplatin during the first course (first three weeks) of chemotherapy.
Primary pharmacokinetic endpoint: study pharmacokinetics of paclitaxel (plasma concentrations) when administered in the IP cavity in plasma and in the peritoneal fluid.
Time frame: Change in plasma concentration of paclitaxel during the first course (first three weeks) of chemotherapy.
Secondary immunological endpoint: rise in dendritic cells
Time frame: Change in dendritic cell counts between samples 15 min before and after administration of chemotherapy through completion of chemotherapy during 18 weeks
Secondary immunological endpoint: rise in tumor infiltrating lymphocytes
Time frame: Change in lymphocyte cell counts between samples 15 min before and after administration of chemotherapy through completion of chemotherapy during 18 weeks
Secondary immunological endpoint: rise in natural killer cells
Time frame: Change in natural killer cell counts between samples 15 min before and after administration of chemotherapy through completion of chemotherpy during 18 weeks
Secondary immunological endpoint: decrease in macrophages M1 type
Time frame: Change in macrophages M1 type cell counts between samples 15 min before and after administration of chemotherapy through completion of chemotherapy during 18 weeks
Secondary immunological endpoint: decrease in macrophages M2 type
Time frame: Change in macrophages M2 type cell counts between samples 15 min before and after administration of chemotherapy through completion of chemotherapy during 18 weeks
Secondary immunological endpoint: change in cytokine level (IL-6) measured by ELISA
Time frame: Change in IL-6 cytokine levels between samples 15 min before and after administration of chemotherapy through completion of chemotherapy during 18 weeks
Secondary immunological endpoint: change in cytokine level (IL-10) measured by ELISA
Time frame: Change in IL-10 cytokine levels between samples 15 min before and after administration of chemotherapy through completion of chemotherapy during 18 weeks
Secondary immunological endpoint: change in cytokine level (IFNg) measured by ELISA
Time frame: Change in IFNg cytokine levels between samples 15 min before and after administration of chemotherapy through completion of chemotherapy during 18 weeks
Secondary immunological endpoint: change in cytokine level (TNFa) measured by ELISA
Time frame: Change in TNFa cytokine levels between samples 15 min before and after administration of chemotherapy through completion of chemotherapy during 18 weeks
Secondary immunological endpoint: change in cytokine level (CCL2) measured by ELISA
Time frame: Change in CCL2 cytokine levels between samples 15 min before and after administration of chemotherapy through completion of chemotherapy during 18 weeks
Primary immunological endpoint: study the use of aspiration fluid from the IP cavity as a biomarker for the efficacy of chemotherapy intervention, measured by decrease in pSTAT in IP fluid.
Time frame: Change in pSTAT between samples 15 min before and after administration of chemotherapy through completion of chemotherapy during 18 weeks
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