This study is for subjects that are post-menopausal women that have been diagnosed with early-stage, low molecular risk breast cancer. Subjects are expected to remain in the study for 60months. There will be a total of 25 subjects enrolled locally.

The study is designed for patients with Estrogen Receptor (ER) positive, HER2-negative advanced breast cancer resistance to prior adjuvant endocrine treatment. The purpose of the study is to determine the effectiveness of Giredestrant compared with Fulvestrant in combinationof CDK4/6i (Palbociclib, Ribociclib and Abemaciclib). The study drug being utilized is giredestrant. The FDA approved drugs will also be utilized: Zoladex and Lupron (LHRH - Luteinizing hormone-releasing hormone agonists) drugs; as well as, Palbociclib, Ribociclib , Fulvestrant, and Abemaciclib.

The study is for patient that have been diagnosed with ER positive HER2 negative early breast cancer. The main purpose is to determine the efficacy and safety of Elacestrant relative to the standard Endocrine therapy. Subject are expected to be enrolled into the study for 36 months.

The study is for patient that are receiving camizestrant as a treatment. The main purpose of study is to change the dosage of camizestrant from 150mg to 75mg. This change was prompted by updated, emerging data from ongoing studies showing
no difference in efficacy between the 75 mg and 150 mg doses. Subject can expect to be in this study for up to 24 months.

This study is for patients that have been diagnosed with MammaPrint Ultrahigh (MP2) Hormone Receptor (HR) Positive / Human Epidermal Growth Factor Receptor (HER2) Negative Stage II-III breast cancer. The drug being used Durvalumab, Cyclophospharmide, Doxorubicin, and Paclitaxel. The study is being done to compare breast cancer event-free survival between patients randomized to standard of care neoadjuvant chamotherapy alone versus standard of care neoadjuvant chemotherapy concurrent with durvalumab. Patients are expected to be in the study for XXmonths.