Results showed that Abrine, anti-PD-1 antibody, and the combination treatment groups could suppress the tumor growth and tumor volume, and Abrine co-treated with anti-PD-1 antibody has a synergistic effect on inhibiting the tumor growth than Abrine or anti-PD-1 antibody-treated groups (Figures 6A–D). The gene discussed is PDCD1; the disease is neoplasm.