Fig. 4
OS cumulative probability plot. che: chemotherapy; lap_che: lapatinib+chemotherapy; niv: nivolumab; trz: trastuzumab; trz_che: trastuzumab+chemotherapy; trz_dex: trastuzumab deruxtecan; trz_niv_ipi: trastuzumab+nivolumab+ipilimumab; trz_pez_che: pertuzumab+trastuzumab+chemotherapy