In a recently published study the investigators revealed a crosstalk between two oncogenic pathways, involved in T-cell acute lymphoblastic leekemia (T-ALL): the protein kinase CK2 physically interacts with the interleukin-7 receptor (IL-7R) and is indispensable for optimal signal transduction mediated by IL-7 binding to IL-7R in T-ALL cells. In the absence of CK2 activation, IL-7 is no longer able to mediate viability, cell cycle progression, and proliferation. Pharmacological inhibitors of CK2 may have a broad impact against T-ALL.