deaths (OS)

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

versus lapatinib plus capecitabine
neratinib plus capecitabine vs. lapatinib plus capecitabine 2 0.88 [0.74; 1.06], 2 RCTs, I2=0%
inconclusive result
versus placebo
neratinib vs. placebo 1 -
versus trastuzumab plus capecitabine
tucatinib plus trastuzumab plus capecitabine vs. trastuzumab plus capecitabine 2 0.66 [0.50; 0.88], 1 RCT, I2=0% conclusive
unassessable degree of certainty