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NCT06708910
Goal of the observational study: Based on PET/MRI data it is possible to differentiate between complete and incomplete pathological remission after neoadjuvant systemic therapy in HER2-positive breast cancer patients. The main question it aims to answer are: Primary endpoint: 1\) Sensitivity and specificity as co-primary endpoints for identification of HER2-positive breast carcinoma with complete pathologic remission (pCR; yT0 yN0) using 18F-FDG PET/MRI (response assessment) Secondary endpoint(s): 1. Accuracy for the identification of patients with HER2-positive breast carcinoma with complete pathologic remission (pCR; yT0 yN0) using 18F-FDG PET/MRI (response assessment) 2. Sensitivity, specificity, and accuracy for the identification of patients with HER2-positive breast carcinoma with complete pathologic remission (pCR) of the primary (yT0) after neoadjuvant therapy using 18F-FDG PET/MRI (response assessment) 3. Sensitivity, specificity, and accuracy for the identification of patients with HER2-positive breast carcinoma with complete pathologic remission (pCR) of locoregional lymph node metastases (yN0) after neoadjuvant therapy using 18F-FDG PET/MRI (response assessment) 4. Evaluation of pre-treatment (baseline) 18F-FDG PET/MRI for predicting therapy response of the primary and locoregional lymph node metastases in patients with HER2-positive breast carcinoma supported by artificial-intelligence (prediction) 5. Evaluation of 18F-FDG PET/MRI for predicting therapy response of the primary in patients with HER2-positive breast carcinoma after the first cycles of systemic therapy supported by artificial-intelligence (prediction) 6. Evaluation of 18F-FDG PET/MRI for predicting therapy response of locoregional lymph node metastases in patients with HER2-positive breast carcinoma after the first cycles of system therapy supported by artificial-intelligence (prediction) The guideline-recommended staging procedure (S3 Germany) using CT will be replaced by a whole-body 18F-FDG PET/MRI, including dedicated 18F-FDG PET/MRI of the breast. The histopathologic results of tissue samples obtained during routine clinical treatment after successful neoadjuvant systemic therapy will serve as a reference standard. The study protocol involves the following examinations for all included patients: 1. Baseline (pre-treatment) examination to substitute for the staging examinations specified in the S3 guideline: Initial whole-body 18F-FDG PET/MRI including 18F-FDG PET/MRI of the breast 2. Thoracic 18F-FDG PET/MRI including 18F-FDG PET/MRI of the breast after the first two cycles of systemic therapy 3. Thoracic 18F-FDG PET/MRI including 18F-FDG PET/MRI of the breast after completion of systemic therapy and immediately before clinically indicated surgery
NCT03630809
The purpose of this study is to learn more about how to treat patients with a diagnosis of diagnosis of Human Epidermal Growth Factor Receptor 2/neu (HER-2/neu) positive breast cancer in the past, who were previously treated with HER-2/neu-directed dendritic cells (DC) vaccines. There is evidence that the use of anti-HER2 dendritic cell (DC) study vaccines could improve response to breast cancer therapy and be an important step in the prevention of recurrence. This study will use a Dendritic Cell Type 1 (DC1) vaccine which is a HER2-sensitized dendritic cell (DC) study vaccine. Dendritic cells are immune cells that can tell the participant's immune system to fight infection. This study vaccine will be made from the participant's blood cells collected from a procedure called leukapheresis.
NCT00005970
This randomized phase III trial studies doxorubicin hydrochloride, cyclophosphamide, paclitaxel, and trastuzumab to see how well they work compared to combination chemotherapy alone in treating women with breast cancer that is human epidermal growth factor receptor 2 (HER2)-positive and has spread to the lymph nodes or high-risk and has not spread to the lymph nodes. Drugs used in chemotherapy use different ways to stop tumor cells from dividing so they stop growing or die. Monoclonal antibodies such as trastuzumab can locate tumor cells and either kill them or deliver tumor-killing substances to them without harming normal cells. It is not yet known whether combination chemotherapy is more effective with or without trastuzumab in treating breast cancer.
NCT00684983
This phase II trial studies capecitabine and lapatinib ditosylate to see how well they work compared with capecitabine, lapatinib ditosylate, and cixutumumab in treating patients with previously treated HER2-positive stage IIIB-IV breast cancer. Drugs used in chemotherapy, such as capecitabine, work in different ways to stop the growth of tumor cells, either by killing the cells, by stopping them from dividing, or by stopping them from spreading. Lapatinib ditosylate may stop the growth of tumor cells by blocking some of the enzymes needed for cell growth. Immunotherapy with cixutumumab, may induce changes in body's immune system and may interfere with the ability of tumor cells to grow and spread. It is not yet known whether capecitabine and lapatinib ditosylate are more effective when given with or without cixutumumab in treating breast cancer that has spread nearby or to other areas of the body.
NCT00390455
This randomized phase III trial studies fulvestrant and lapatinib to see how well they work compared to fulvestrant and a placebo in treating postmenopausal women with stage III or stage IV breast cancer that is hormone receptor-positive. Estrogen can cause the growth of breast cancer cells. Hormone therapy using fulvestrant may fight breast cancer by lowering the amount of estrogen the body makes. Lapatinib may stop the growth of breast cancer cells by blocking some of the enzymes needed for cell growth. It is not yet known whether fulvestrant is more effective with or without lapatinib in treating breast cancer.