RATIONALE: DNA analysis of tumor tissue from patients with cancer may help doctors predict how patients respond to treatment and plan the best treatment. PURPOSE: This laboratory study is identifying genetic markers that predict response to paclitaxel in patients with newly diagnosed stage III or stage IV ovarian epithelial cancer or primary peritoneal cancer.
OBJECTIVES: Primary * Identify genetic markers of paclitaxel chemosensitivity and/or chemoresistance, using gene expression arrays, in patients with newly diagnosed stage III or IV ovarian epithelial cancer or primary peritoneal cancer treated with single-agent weekly paclitaxel followed by paclitaxel in combination with carboplatin. * Correlate RNA expression levels with clinical response in patients treated with this regimen. Secondary * Determine the response rate in patients treated with this regimen. * Determine the progression-free survival and overall survival of patients treated with this regimen. * Compare transcriptional profiles of primary tumors vs tissue obtained at second-look surgery in patients treated with this regimen. * Identify differential expression between pre- and post-treatment tissue in patients treated with this regimen. OUTLINE: This is a pilot study. Pre- and post-chemotherapy tumor samples undergo transcriptional profiling using cDNA microarrays to identify gene overexpression. The gene expression profiles of paclitaxel-sensitive tumors are compared with those that are paclitaxel resistant to identify gene markers that are associated with response to paclitaxel. PROJECTED ACCRUAL: A total of 40 patients will be accrued for this study.
Study Type
OBSERVATIONAL
Enrollment
7
UT MD Anderson Cancer Center
Houston, Texas, United States
Genetic markers of paclitaxel chemosensitivity and/or chemoresistance
Time frame: 2 years
Correlation of RNA expression levels with clinical response
Time frame: 2 years
Response rate to weekly paclitaxel in chemotherapy naive patients
Resonse measured by clinical assessments every 3 months post treatment.
Time frame: Every 3 months post treatment
Progression-free survival
Influence of weekly paclitaxel followed by paclitaxel in combination with carboplatin on progression-free survival by clinical assessments every 3 months post treatment
Time frame: Every 3 months post treatment
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