Mouse Ikbkap gene encodes IKAP/Elp1- one of the core subunits of Elongator- and has been implicated in translational regulation. However, a role for IKAP in genome maintenance remains unclear. In this study, we analyze proteins from control and Ikbkap depletion mouse embryonic fibroblasts (MEF) using MS. Using MS-based proteomics, we show that several proteins involved in cancer and DNA damage response were found to be differentially expressed upon Ikbkap depletion.