pCR

es-BC - HER2 negative - (neo)adjuvant (NA) breast cancer - HER2-positive es-BC - HER2 negative - (neo)adjuvant (NA)

versus paclitaxel followed by doxorubicin plus cyclophosphamide
pembrolizumab plus paclitxel followed by doxorubicin plus cyclophosphamide vs. paclitaxel followed by doxorubicin plus cyclophosphamide 1 3.72 [2.02; 6.87], 1 RCT, I2=0%
unassessable degree of certainty