TABLE 2.

The incidence of adverse events.

Grade ≥3 AEs	T-DM1	PC	T-DXd
Diarrhea	0.004	0.031	0.004
Vomiting	0.004	0.060	0.016
Neutropenia	0.031	0.060	0.058
Fatigue	0.008	0.010	0.051
Nausea	0.004	0.010	0.066
Anemia	0.042	0.010	0.058
Alanine aminotransferase increased	0.046	0.020	0.016
Aspartate aminotransferase increased	0.050	0.010	0.008

Abbreviations: AEs, adverse events; T-DM1, trastuzumab emtansine; PC, pyrotinib plus capecitabine; T-DXd, trastuzumab deruxtecan.