Feasibility Study of Short Term Fondaparinux (Arixtra) in Chemotherapy-Pretreated Ovarian Carcinoma Patients at High Risk of Progression
|Study Design:||Allocation: Non-Randomized
Intervention Model: Single Group Assignment
Masking: Open Label
Primary Purpose: Treatment
|Official Title:||07-742 Phase I/ Feasibility Study of Short Term Fondaparinux (Arixtra) in Chemotherapy-Pretreated Ovarian Carcinoma Patients at High Risk of Progression|
- Estimate the proportion of patients who complete an eight week course of once daily administration of fondaparinux (Arixtra). [ Time Frame: 15 months ]
- Time to Recurrence [ Time Frame: 24 months ]
|Study Start Date:||January 2008|
|Estimated Study Completion Date:||November 2010|
|Estimated Primary Completion Date:||September 2010 (Final data collection date for primary outcome measure)|
- fondaparinux sodium
A large body of work supports the association of abnormal coagulation (blood clot formation) and malignancy. A coagulation enzyme thrombin is able to 1) enhance cancer cell adhesion to platelets and endothelial cells 2) stimulate tumor cell growth, 3) increase metastasis and 4) stimulate tumor angiogenesis.
Thrombin inhibition has anti-metastatic and anti-tumor activity in mouse models. Recent meta-analysis of 4 major randomized clinical trials that have evaluated the effect of anticoagulants on overall survival in cancer patients comparing low molecular weight heparin (LMWH) to placebo demonstrates a 13% risk reduction in mortality at 1 year and 10% risk reduction at 2 years, which is statistically significant and independent of the potential confounding effect of anticoagulation in the prevention of venous thromboembolic disease.
Fondaparinux sodium (ARIXTRA® ) is a highly effective newer anticoagulant that is a fully synthetic pentasaccharide. Arixtra binds to antithrombin III and subsequently inhibits Factor Xa and hence thrombin generation. Arixtra has an excellent safety profile in clinical trials of over 10,000 patients. When compared to LMWHs, ARIXTRA® has a potential pharmacokinetic advantage based on its longer half-life of 16-17 hours.
The hypothesis to be tested is whether the completion of 8 weeks of ARIXTRA® in patients with ovarian cancer who are in 'clinical remission' (no clinical evidence of disease) after chemotherapy but at high risk of ovarian cancer recurrence is feasible and safe and if the inhibition of thrombin generation by ARIXTRA® in ovarian cancer will result in decrease ovarian cancer recurrence.
A concise description of the methodology:
The trial will be a prospective open-label cohort feasibility study of giving 2 months of ARIXTRA® in patients at high risk of recurrence of ovarian cancer. The planned accrual is 15 patients. Patients will be treated with a fixed dose of ARIXTRA® 2.5 mg by subcutaneous injection once daily. Treatment will continue for 2 months or until disease recurrence or grade 3 adverse events or patient refusal.
In addition, all patients will be followed for survival and recurrence.
Please refer to this study by its ClinicalTrials.gov identifier: NCT00659399
|United States, New York|
|NYU Cancer Institute Clinical Cancer Center|
|New York, New York, United States, 10016|
|Principal Investigator:||Boris Kobrinsky, M.D.||NYU School of Medicine|