Exemestane With Celecoxib as Neoadjuvant Treatment in Postmenopausal Women With Stage II, III, and IV Breast Cancer
Other: Correlative studies
|Study Design:||Allocation: Non-Randomized
Intervention Model: Single Group Assignment
Masking: Open Label
Primary Purpose: Treatment
|Official Title:||A Phase II Trial of Exemestane (Aromasin) in Combination With Celecoxib (Celebrex) as Neoadjuvant Treatment in Postmenopausal Women With Stage II, III, and IV Breast Cancer|
- Number of Patients With Decreased Gene Expression of CYP19 in Breast Cancer by Adding COX-2 Inhibitor to Exemestane [ Time Frame: up to 16 weeks ]Collected from postmenopausal women that receive neoadjuvant exemestane.
- Evaluate Response Rate of Neoadjuvant Exemestane and Celecoxib in Postmenopausal Women. [ Time Frame: up to 16 weeks ]Response Evaluation Criteria In Solid Tumors Criteria (RECIST v1.0) for target lesions and assessed by MRI: Complete Response, Disappearance of all target lesions; Partial Response, >=30% decrease in the sum of the longest diameter of target lesions; Stable Disease, <30% decrease in the sum of the longest diameter of target lesions; Progressive Disease, 20% increase in the sum of the longest diameter of target lesions, or a measurable increase in a non-target lesion, or the appearance of new lesions.
|Study Start Date:||July 2003|
|Study Completion Date:||June 2011|
|Primary Completion Date:||November 2007 (Final data collection date for primary outcome measure)|
Experimental: Exemestane & Celecoxib
Patients will receive exemestane 25 mg orally per day for 8 weeks. Starting in the 9th week, patients will receive celecoxib 400 mg orally twice per day for 8 weeks in addition to exemestane.
25 mg orally once per day for 16 weeks.
Other Name: AromasinDrug: Celecoxib
given orally at two 200 mg capsules (400 mg) twice per day. Patients assigned to receive 400 mg twice per day should be instructed to take the drug with food.
Other Name: CelebrexOther: Correlative studies
Rationale: In postmenopausal women, the main source of estrogen is through the conversion of androgens, or sex hormones produced by the adrenal glands. An enzyme called aromatase carries out this process. Exemestane, an aromatase inhibitor, blocks production of estrogens. Research indicates that the gene responsible for aromatase activity is CYPO19. Therefore, exemestane helps to inhibit aromatase activity through CYP019. Along with CYP019, another gene associated with breast cancer is an overexpression of COX-2 enzymes. Research suggests that COX-2 overexpression can cause cancer cell division, increased blood flow to tumors, and metastases. Celecoxib blocks COX-2 activity and produces fewer side effects compared with other non-steroidal inflammatory drugs (NSAIDs). This study builds on previous research to test the combination of exemestane and celecoxib for breast cancer.
Purpose: This study is evaluating the safety and efficacy of exemestane and celecoxib before surgery for stage II, III, and IV breast cancer in postmenopausal women. Tests will analyze the CYP019 gene after these treatments.
Treatment: Patients in this study will receive exemestane and celecoxib. Both drugs will be given to patients as oral pills. Exemestane will be taken daily for sixteen weeks. Starting in week 9, celecoxib will be taken twice daily for eight weeks. Therefore, during weeks 9-16, patients will be taking both exemestane and celecoxib. Several tests and exams will be given throughout the study to closely monitor patients, including a biopsy performed after the first 8 weeks on exemestane. After sixteen weeks on exemestane and celecoxib, patients will have breast surgery.
Please refer to this study by its ClinicalTrials.gov identifier: NCT00201773
|United States, Ohio|
|Ohio State University|
|Columbus, Ohio, United States, 43210|
|Principal Investigator:||Stephen Povoski||Ohio State University|