deaths (OS)progression or deaths (PFS)RFS/DFS

la/mBC - HER2 positive - 2nd Line (L2) breast cancer - HER2-positive la/mBC - HER2 positive la/mBC - HER2 positive - 2nd Line (L2)

versus trastuzumab emtansine
trastuzumab deruxtecan vs. trastuzumab emtansine 1 0.55 [0.36; 0.85], 1 RCT, I2=0%
unassessable degree of certainty
0.28 [0.22; 0.36], 1 RCT, I2=0%
unassessable degree of certainty
-