This randomized phase III trial studies whether weight loss in overweight and obese women may prevent breast cancer from coming back (recurrence). Previous studies have found that women who are overweight or obese when their breast cancer is found (diagnosed) have a greater risk of their breast cancer recurring, as compared to women who were thinner when their cancer was diagnosed. This study aims to test whether overweight or obese women who take part in a weight loss program after being diagnosed with breast cancer have a lower rate of cancer recurrence as compared to women who do not take part in the weight loss program. This study will help to show whether weight loss programs should be a part of breast cancer treatment.

The first goal of this project is to validate the superiority of semi-permanent marks used in conjunction with specialized light-based surface imaging (SIGRT) in an effort to phase out the use of permanent tattoos for the investigator's patients. The secondary goal of this project is to validate the superiority of specialized light-based surface imaging for daily radiation set-up compared to standard-of-care imaging methods using ionizing radiation, such as weekly port films or cone-beam CT (CBCT) scans during a radiation therapy course for breast cancer.

To examine whether rapamycin can reduce malignant markers and aberrant mammary stem/progenitor cells (MaSCs) number in surgical specimens

We will assess physical functioning, daily physical activity with wearable activity monitors, biological markers (serum and salivary cortisol), diet, program adherence, as well as psycho-social measures of physical, mental, and spiritual wellbeing. In addition, BCS will be asked to describe their best day possible and their typical day. We will conduct a qualitative analysis from their responses to identify endorsement of themes.

This is an international, multicenter, open-label, randomized, Phase 3 study in patients with locally advanced, inoperable, or metastatic triple-negative breast cancer (mTNBC) who have not received previous therapy for advanced disease and whose tumors are PD-L1 positive (defined using the PD-L1 IHC 22C3 assay as tumors with a combined positive score [CPS] ≥ 10) at screening.

postMONARCH is a Phase 3, global, multicenter, randomized, double-blind, placebo-controlledstudy in participants with HR+, HER2- advanced or metastatic breast cancer. This study willenroll adults who experienced disease progression on a CDK4 & 6 inhibitor and an AI in thefirst-line setting or relapse on/after a CDK4 & 6 inhibitor with ET in the adjuvant setting.