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Spots Global Cancer Trial Database for Research and Analysis of the Mechanisms Involved in the Emergence of Breast Cancer Stem Cells (RepriM)

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Trial Identification

Brief Title: Research and Analysis of the Mechanisms Involved in the Emergence of Breast Cancer Stem Cells (RepriM)

Official Title: Research and Analysis of the Mechanisms Involved in the Emergence of Breast Cancer Stem Cells

Study ID: NCT02570100

Conditions

Breast Cancer

Study Description

Brief Summary: From a cellular perspective, breast cancers appear to develop hierarchically from a small contingent of cancer stem cells (CSCs). The presence of CSCs in tumor tissue is associated with an increased risk of recurrence and metastasis, as well as a worse prognosis. Thus, these CSCs exhibit resistance to conventional anti-tumor treatments such as radiotherapy and chemotherapy. Moreover, these treatments would favor the emergence of these CSCs and the reprogramming of non-CSCs in CSCs. It has been demonstrated in neoadjuvant that the proportion of CSCs before any treatment is correlated with chemoresistance and that a resurgence of CSCs after chemotherapy is correlated with a poor prognosis. However, the mechanisms involved in the emergence of CSCs by reprogramming of non-CSCs are not yet known. The Oscar Lambret Center proposes a monocentric prospective interventional study based on the cellular and molecular analysis of the tumor, serum and circulating cells, before, during and at the end of the treatment for each patient receiving a neoadjuvant chemotherapy for breast cancer. The identification of the mechanisms contributing to the enrichment of CSCs resistant to chemotherapy could lead to therapeutic solutions.

Detailed Description: Patients responding criteria for selection will sign an informed consent form. Before the initiation of chemotherapy, a tumor specimen (under echographic control) and four blood samples will be collected. The chemotherapy consists of 3 cycles of (F)EC100 spaced 21 days apart : * Epirubicin, 100 mg/m² in intravenous (IV) * Cyclophosphamide, 500 mg/m² in IV * +/- 5-fluorouracile (5FU), 500 mg/m² in IV Followed by 3 cycles of Taxotere (Docetaxel, IV, 100 mg/m²) spaced 21 days apart +/- Herceptin (Trastuzumab, IV, 8 mg/kg during C1 and then 6 mg/kg) for 1 year in the case of overexpression of the HER-2 oncoprotein. After 3 cycles of chemotherapy (that is to say at the end of the (F)EC100 treatment, at the time of the usual ultrasound examination), a tumor specimen and four blood samples will be taken. After 6 cycles of chemotherapy (that is to say at the end of the Docetaxel +/- Trastuzumab treatment), four blood samples will be collected. A partial or total mastectomy could be performed during the 6 cycles of chemotherapy. During surgery, a tumor specimen will be taken. The indication of breast surgery will remain at the discretion of the pluridisciplinary committee of the participating center. Prior to the start of treatment, patients will have a clinical and a paraclinical examination and will undergo laboratory examinations. On day 1 of the fourth cycle and after the sixth cycle of chemotherapy, patients will have a clinical examination and will undergo laboratory examinations. After three cycles of chemotherapy, at the time of the intermediate breast ultrasound, patients will have paraclinical examinations. Finally, at the end of the study (after partial or total mastectomy), anatomopathological examinations will be performed on the operative specimen.

Eligibility

Minimum Age: 18 Years

Eligible Ages: ADULT, OLDER_ADULT

Sex: FEMALE

Healthy Volunteers: No

Locations

Centre Oscar Lambret, Lille, , France

Contact Details

Name: Géraldine LAURIDANT, MD

Affiliation: Centre Oscar Lambret

Role: PRINCIPAL_INVESTIGATOR

Useful links and downloads for this trial

Clinicaltrials.gov

Google Search Results

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