View clinical trials related to Neoplasms, Breast.
Filter by:This study will test the safety of a drug called lapatinib and how well it works. Lapatinib (also called Tyverb or Tykerb) will be compared with another drug trastuzumab (also called Herceptin). Trastuzumab is an antibody against the HER2 protein. It binds to part of the HER2 protein to stop it working. Clinical trials have found that adding trastuzumab to chemotherapy lowers the rate of cancer recurrence and improves survival in women with HER2 positive breast cancer. Lapatinib also stops the HER2 protein working and may slow or stop cancer cells from growing and may prevent cancer from returning. Lapatinib has been approved in some countries to treat patients with certain types of breast cancer. However lapatinib has not been approved to treat early breast cancer. This study is one of many being carried out involving lapatinib in early breast cancer and these studies are showing that it is a promising treatment. This study will compare lapatinib and trastuzumab. One group of people will take lapatinib and another group will take trastuzumab. The effects of the drugs, both good and bad, will be compared. This study will compare two different durations of HER2 treatment to see if earlier introduction of HER2 treatment is beneficial. The lapatinib group will receive HER2 treatment from the very beginning for 24 weeks prior to surgery and the trastuzumab group will only receive HER2 therapy for 12 weeks prior to surgery.
This is a Phase II, randomized, open-label, multi-center study evaluating the efficacy and safety of lapatinib in combination with chemotherapy versus trastuzumab in combination with chemotherapy in women with HER2-positive and p95HER2-positive metastatic breast cancer (MBC). Eligible subjects will have newly diagnosed metastatic breast cancer (Stage IV) either as a primary diagnosis or as a recurrence following treatment of curative intent; not have received systemic or local treatment for MBC and have breast cancer that is positive for HER2 and p95HER2. The primary objective is to compare progression-free survival (PFS) of lapatinib plus chemotherapy versus trastuzumab plus chemotherapy as first-line treatment in subjects with MBC exhibiting concurrent HER2 overexpression (and/or gene amplification) and expression of carboxy-terminal fragments of HER2 (p95HER2). The secondary objectives are to evaluate overall survival, overall response rate, clinical benefit response rate and the safety as well as tolerability of lapatinib plus chemotherapy and trastuzumab plus chemotherapy.