The goal of this clinical study is to see if sacituzumab govitecan-hziy (SG) can improve life
spans of people with HR+/HER2- metastatic breast cancer and their tumor does not grow or
spread when compared to current available standard treatments, such as paclitaxel,
nab-paclitaxel or capecitabine. The primary objective is to compare the effect of SG relative
to the treatment of physician's choice (TPC) on progression-free survival (PFS).

This is a Phase III, randomized, open-label, 3-arm, multicenter, international study
assessing the efficacy and safety of Dato-DXd with or without durvalumab compared with ICT in
participants with stage I to III TNBC with residual invasive disease in the breast and/or
axillary lymph nodes at surgical resection following neoadjuvant systemic therapy.

This phase II trial studies the effect of hormonal therapy given after (adjuvant) combination pertuzumab/trastuzumab in treating patients with hormone receptor positive, HER2 positive breast cancer. The drugs trastuzumab and pertuzumab are both monoclonal antibodies, which are disease-fighting proteins made by cloned immune cells. Estrogen can cause the growth of breast cancer cells. Hormonal therapy, such as letrozole, anastrozole, exemestane, and tamoxifen, block the use of estrogen by the tumor cells. Giving hormonal therapy after pertuzumab and trastuzumab may kill any remaining tumor cells in patients with breast cancer.

This is a multicenter, Phase 1b/2 trial. The phase 1b part of the trial aims to determine the
RP2D of elacestrant when administered in combination with alpelisib, everolimus, palbociclib,
and ribociclib. The Phase 2 part of the trial will evaluate the efficacy and safety of the
various combinations in patients with ER+/HER2- advanced/metastatic breast cancer.

This phase III trial compares the effect of continuation of treatment with pembrolizumab (usual approach) to observation only at preventing cancer from coming back in patients with early-stage triple-negative breast cancer (TNBC) who achieved a pathologic complete response after preoperative chemotherapy in combination with pembrolizumab. The usual approach for patients with early-stage TNBC who receive preoperative chemotherapy plus pembrolizumab is to continue to receive pembrolizumab for up to 27 weeks after surgery. Immunotherapy with monoclonal antibodies, such as pembrolizumab, may help the body's immune system attack the cancer, and may interfere with the ability of tumor cells to grow and spread. This trial may help researchers determine if observation is as good as receiving pembrolizumab for 27 weeks after surgery in triple-negative breast cancer patients who achieved a pathologic complete response after preoperative treatment with chemotherapy and pembrolizumab.

This phase III trial compares the effect of usual treatment with trastuzumab emtansine (T-DM1) alone vs. T-DM1 in combination with tucatinib. T-DM1 is a monoclonal antibody, called trastuzumab, linked to a chemotherapy drug, called DM1. Trastuzumab is a form of targeted therapy because it attaches to specific molecules (receptors) on the surface of cancer cells, known as HER2 receptors, and delivers DM1 to kill them. Tucatinib blocks HER2, which may help keep cancer cells from growing and may kill them. Giving T-DM1 in combination with tucatinib may work better in preventing breast cancer from relapsing in patients with HER2 positive breast cancer compared to T-DM1 alone.