Confirming the intrinsic loss of CHK1 signalling in Eμ-Myc/cRel−/− lymphomas, our proteomics analysis revealed that these cells have the characteristics of a WT Eμ-Myc lymphoma treated with an acute 8 h dose of CCT244747, with many down-regulated phosphopeptides from proteins linked to CHK1 being shared between these datasets [20]. The gene discussed is CHEK1; the disease is lymphoma.