PDCD1 and acute myeloid leukemia: In addition, the upregulation of immune check‐points (ICs), such as PD‐1, TIM‐3, CTLA‐4, LAG‐3, and TIGIT on CD8 T cells has been identified in de novo AML and relapsed and refractory AML (R/R AML).45, 46, 47, 48, 49