IFNAR1 and acute myeloid leukemia: To address the role of IFN‐1, the RCN1‐deficient AML cells were treated with the IFN‐α inhibitor, IFN alpha‐IFNAR‐IN‐1 hydrochloride (IN‐1), and the decreased cell number of RCN1‐deficient NB4 and RCN1‐deficient OCI/AML3 cells was also restored (Fig. 5D,E).