Figure 1.

Summary of novel agents that have been used to prevent or treat relapse after allo-HSCT. Salvage; salvage therapy for patients with hematological relapse; Maintenance, preventive therapy for high-risk patients without any sigh of underlying disease; Preemptive, preemptive therapy for patients with minimal residual disease; Promising agents, the agents in clinical trial; ∗, engineering NK or T cells are introduced in Table 1.