IRAK1 is known as a widely expressed serine/threonine kinase, which has a regulatory effect on signalling downstream to Toll‐like and Interleukin‐1 Receptors, and furthermore, IRAK1 is reported to be highly expressed in all types of T‐ALL and to exert regulatory functions in T‐ALL cell lines.24 Here, IRAK1 is linked to acute lymphoblastic leukemia.