Capecitabine Plus Pembrolizumab in Patients With Triple Negative Breast Cancer After Chemo-immunotherapy and Surgery

The goal of this clinical trial is to evaluate the efficacity and safety of pembrolizumab and capecitabine on the invasive disease-free survival, in participants who have triple negative breast cancer (TNBC) with residual disease after neoadjuvant chemotherapy associated with pembrolizumab.

We propose to evaluate the benefit in 2-year iDFS and safety of adding capecitabine to pembrolizumab in post-operative phase of pembrolizumab-containing treatment, in the subgroup of localized TNBC patients with residual disease. An external cohort with patients treated with pembrolizumab as part of standard care after surgery, for localized TNBC without pCR after NAC, and with similar eligibility criteria, will be registered in an ambispective way, allowing comparisons between the experimental arm and this external cohort. All the centers involved in the study will participate in the registration of the needed information concerning this cohort.