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Spots Global Cancer Trial Database for Phase II Study of Simvastatin in Primary Breast Cancer; Test of Its Potential Selectivity on Basal Subtype Breast Cancer

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Trial Identification

Brief Title: Phase II Study of Simvastatin in Primary Breast Cancer; Test of Its Potential Selectivity on Basal Subtype Breast Cancer

Official Title: Phase II Study of Simvastatin in Primary Breast Cancer; Test of Its Potential Selectivity on Basal Subtype Breast Cancer

Study ID: NCT00807950

Conditions

Breast Cancer

Interventions

Simvastatin

Study Description

Brief Summary: We hypothesize that Simvastatin administration would result in selective killing of the basal subtype of breast cancer, in particular, CD44+/CD24- breast cancer cells in primary tumor. We further hypothesize that tumor genomic changes would correlate with tumor response to Simvastatin. We are also looking to correlate Simvastatin biological effects with the expression pattern of initial status of primary tumor. In addition, we hypothesize that Simvastatin-induced tumor gene expression changes may correlate with tumor and plasma proteomics, peripheral blood mononuclear cell gene expression changes, and pharmacogenetics, and that these analyses may further refine the selection of patients most likely to benefit from Simvastatin.

Detailed Description: Primary Objectives 1. Evaluate the biological response (proliferation and apoptosis) of Simvastatin in primary breast cancer. 2. Evaluate the cell type specificity of Simvastatin effect on basal subtype breast cancer, especially cells with CD44+/CD24- immunophenotype in the primary tumor. Secondary objectives 1. To study cellular response to Simvastatin in transriptome. 2. To obtain gene expression signature that predict Simvastatin biological effects. 3. To identify genetic polymorphisms that may influence Simvastatin pharmacokinetics and/or biological effects on breast cancer. 4. To correlate tumor and plasma proteomics with tumor gene expression changes, and to identify tumor and/or serum protein markers that predict Simvastatin biological effects. 5. To correlate peripheral blood mononuclear cell gene expression changes with tumor gene expression changes, and to identify blood gene markers that may predict Simvastatin biological effects. VI. Abstract of Research Proposal In no more than 300 words, describe concisely the specific aims, hypotheses, methodology and approach of the application, indicating where appropriate the application's importance to science or medicine. The abstract must be self-contained so that it can serve as a succinct and accurate description of the application when separated from it. Please use lay terms. If this not possible, the technical and medical terms should be explained in simple language. We hypothesize that Simvastatin administration would result in selective killing of the basal subtype of breast cancer, in particular, CD44+/CD24- breast cancer cells in primary tumor. We further hypothesize that tumor genomic changes would correlate with tumor response to Simvastatin. We are also looking to correlate Simvastatin biological effects with the expression pattern of initial status of primary tumor. In addition, we hypothesize that Simvastatin-induced tumor gene expression changes may correlate with tumor and plasma proteomics, peripheral blood mononuclear cell gene expression changes, and pharmacogenetics, and that these analyses may further refine the selection of patients most likely to benefit from Simvastatin. This is a single-centre, open-label, phase II study of Simvastatin in resectable primary breast cancer. A total of 100 patients with measurable, resectable, primary breast tumor will be enrolled to receive 10-21 days of Simvastatin at a dose of 20 mg daily before definitive breast cancer surgery. Pre-treatment tumor biopsy will be obtained from each subject before starting Simvastatin. Subjects will take Simvastatin at a dose of 20 mg daily for 10-21 days, prior to definitive breast cancer surgery. The post-treatment tumor biopsy will be obtained at surgery. At each tumor biopsy, 3-4 tumor samples will be obtained through the same needle track. One tumor core at each time point will be fixed in formalin for histological examination and immunohistochemical studies. The remaining tumor cores will be stored in liquid nitrogen for subsequent RNA and protein extraction for gene expression and proteomics studies. Blood samples will be obtained before and after 10-21 days of Simvastatin treatment for Simvastatin pharmacokinetic analysis, plasma proteomics and peripheral mononuclear cell gene expression analysis. 10 ml blood will be taken from each participant for genotyping studies.

Keywords

Eligibility

Minimum Age: 18 Years

Eligible Ages: ADULT, OLDER_ADULT

Sex: FEMALE

Healthy Volunteers: No

Locations

National University Hospital, Singapore, , Singapore

Contact Details

Name: Soo Chin Lee, MBBS, MRCP

Affiliation: National University Hospital, Singapore

Role: PRINCIPAL_INVESTIGATOR

Useful links and downloads for this trial

Clinicaltrials.gov

Google Search Results

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