This study is for people with a type of breast cancer called Triple Negative Breast Cancer (TNBC). The study is seeing if a shorter chemotherapy (chemo) without a drug called anthracycline is as good as the usual chemo. Chemo is medicine that helps stop cancer from growing. Medicines in this study include paclitaxel, carboplatin, cyclophosphamide, and docetaxel. A new medicine called pembrolizumab helps the immune system fight cancer.

Key Points:

• The study lasts up to 5 years with check-ups every 6 months in the first 2 years.
• Participants might get different medicines depending on which group they are placed in.
• Participants may provide blood samples and answer questions about their health.

You can join this study if you have TNBC, are 18 years or older, and meet other health criteria. You should not have received certain treatments before or have severe allergies to the study medicines. Joining this study could help doctors learn if a shorter chemo is just as good and possibly easier for patients. Participants will have regular medical check-ups to ensure safety. Always talk to your doctor before joining any study to understand the benefits and risks.