Standard of Care Chemotherapy Plus Pembrolizumab for Breast Cancer

Pembrolizumab 200mg every 3 weeks by IV infusion on Day 1 of each 3 week cycle

Paclitaxel 80mg/m2 every 3 weeks by IV infusion on Days 1, 8, and 15 of each 3 week cycle

Capecitabine 2000mg every two weeks by mouth twice each day on days 1-7 of each 2 week cycle.