Assessment Pembrolizumab (Keytruda): CADTH Reimbursement Recommendation: Sign: Together with chemotherapy, to the procedure of Grownup people with regionally recurrent unresectable or metastatic triple-negative breast cancer who have not acquired prior chemotherapy for metastatic disease and whose tumours Specific programmed mobile death-ligand 1 (mixed positive score ≥ 10) as based on https://georgeq912cbz2.oneworldwiki.com/user