The ToGA trial demonstrated a significant survival benefit in the transtuzumab +chemotherapy when compared with chemotherapy alone arm: 13.5 vs. 11.1 months, respectively (p=0.0048; HR 0.74; 95% CI 0.60, 0.91). ORR was 47.3% in the trastuzumab + 5-FU/CDDP (or capecitabine/CDDP) arm and 34.5% in the chemotherapy alone arm (p=0.0017). The ToGA trial is the first phase III trial to demonstrate survival benefit from molecularly targeted agent in gastric cancer.