Spots Global Cancer Trial Database for Lapatinib in Women With Metastatic Breast Cancer Who Have Failed Prior Antihormone Therapy

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Trial Identification

Brief Title: Lapatinib in Women With Metastatic Breast Cancer Who Have Failed Prior Antihormone Therapy

Official Title: Phase II Trial of Lapatinib in Women With Hormone Receptor Positive (Estrogen Receptor [ER] and/or Progesterone Receptor [PR] +) Human Epidermal Growth Factor Receptor 2 (HER-2) Negative Metastatic Breast Cancer Who Have Failed Prior Antihormone Therapy

Study ID: NCT00759642

Conditions

Metastatic Breast Cancer

Interventions

lapatinib

Study Description

Brief Summary: Hormone receptor positive breast cancer is the most common type of breast cancer, comprising 70-80% of all breast cancers. Endocrine therapy is the main type of initial treatment for patients with your type of breast cancer. Endocrine therapy is treatment that tries to remove, or block certain hormones from binding to the cancer cells and thus slow or stop the growth of cancer. Although most patients with your type of breast cancer respond initially to endocrine therapies, it can lose its effectiveness. New therapies for this type of cancer are needed.

Detailed Description: Endocrine therapy forms the backbone of treatment for both early stage and advanced stage hormone receptor positive breast cancer. Although most patients with advanced estrogen receptor positive metastatic disease respond initially to endocrine therapies, this response is short lived. New therapies able to provide additional benefit to patients with hormone receptor positive, endocrine-resistant, advanced metastatic breast cancer are required. This study proposes to add lapatinib to endocrine therapy to treat hormone receptor positive HER-2 negative metastatic breast cancer patients.