Abstract
Objectives: On the basis of reversal of taxane resistance with AKT inhibition, we initiated a phase I trial of the AKT inhibitor perifosine with docetaxel in taxane and platinum-resistant or refractory epithelial ovarian cancer. Methods: Patients with pathologically confirmed high-grade epithelial ovarian cancer (taxane resistant, n = 10; taxane refractory, n = 11) were enrolled. Peripheral blood samples and tumor biopsies were obtained and 18F-FDG-PET and DCE-MRI scans were performed for pharmacodynamic and imaging studies. Results: Patients received a total of 42 treatment cycles. No dose-limiting toxicity was observed. The median progression-free survival and overall survival were 1.9 months and 4.5 months, respectively. One patient with a PTEN mutation achieved a partial remission (PR) for 7.5 months, and another patient with a PIK3CA mutation had stable disease (SD) for 4 months. Two other patients without apparent PI3K pathway aberrations achieved SD. Two patients with KRAS mutations demonstrated rapid progression. Decreased phosphorylated S6 correlated with 18F-FDG-PET responses. Conclusions: Patients tolerated perifosine 150 mg PO daily plus docetaxel at 75 mg/m 2 every 4 weeks. Further clinical evaluation of effects of perifosine with docetaxel on biological markers and efficacy in patients with ovarian cancer with defined PI3K pathway mutational status is warranted.
Original language | English (US) |
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Pages (from-to) | 47-53 |
Number of pages | 7 |
Journal | Gynecologic oncology |
Volume | 126 |
Issue number | 1 |
DOIs | |
State | Published - Jul 2012 |
Externally published | Yes |
Keywords
- AKT
- Docetaxel
- Epithelial ovarian cancer
- Perfosine
- Platinum resistance
- Taxane resistance
ASJC Scopus subject areas
- Oncology
- Obstetrics and Gynecology