RELA and acute lymphoblastic leukemia: Compared with the mimic‐miR‐204 + oe‐NC group, the mice treated with cells transfected with mimic‐miR‐204 + oe‐p65 showed increased numbers of T‐ALL cells (Figure 6A), which proves that regulation of T‐ALL by miR‐204 depends on the NF‐κB signalling pathway.