MLN0905 (50 mg/kg, p.o.) shows a higher sustained PD response as it impressively generates a robust PD response up to 72 h in nude mice bearing HT29 xenograft tumors. MLN0905 (6.25, 12.5, 25, 50 mg/kg, p.o.) exhibits significant antitumor activities in mice bearing HT29 xenograft tumors. MLN0905 has marked antitumor effects in a subcutaneous OCI LY-19-Luc lymphoma xenograft model, and the treatment are as follows: 3.12 mg/kg daily, 6.25 mg/kg daily, 10 mg/kg QD×3/wk, and 14.5 mg/kg QD×3/wk. MLN0905 (1.6, 3.12, and 6.25 mg/kg, p.o.) also induces a significant antitumor response in mice bearing disseminated (human) OCI LY-19-Luc lymphoma disease. MLN0905 (6, 8, 10, 12.5, and 14.5 mg/kg, p.o.) causes a significant antitumor response in a primary human lymphoma model (PHTX-22L). Furthermore, MLN0905 synergizes with rituximab in a disseminated OCI LY-19-Luc lymphoma model.