This randomized phase III trial studies how well doxorubicin hydrochloride and cyclophosphamide followed by paclitaxel with or without carboplatin work in treating patients with triple-negative breast cancer. Drugs used in chemotherapy, such as doxorubicin hydrochloride, cyclophosphamide, paclitaxel, and carboplatin, 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. It is not yet known whether doxorubicin hydrochloride and cyclophosphamide is more effective when followed by paclitaxel alone or paclitaxel and carboplatin in treating triple-negative breast cancer.

This phase III trial compares the effect of active symptom monitoring and patient education to patient education alone in helping young women with stage I-III breast cancer stay on their hormone therapy medicines. The patient education tool contains interactive weblinks which provide patients with education material about breast cancer and side effects of therapy. Symptom monitoring is a weblink via email or text message with questions asking about symptoms. Hormone therapy for breast cancer can cause side effects, and may cause some women to stop treatment early. Asking about symptoms more often may help women keep taking hormone therapy medicines

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.

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.

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.