Hazard ratios (HR) for mRA levels of SAMHD1 and RRM1, RRM2 and RRM2B (all log‐transformed using the natural logarithm) in univariable regression as well as hazard ratios for SAMHD1 in multivariable regression models in ara‐C‐treated AML patients. Here, RRM2B is linked to acute myeloid leukemia.