TRAF2 and lymphoma: To further test whether TRAF2 deficiency or TRAF2/3 double deficiency also render lymphoma cells more sensitive to IAP antagonist treatment, we generated TRAF2-KO Ly1 cells (Ly1-P30) and TRAF2/3-DKO Ly1 cells (Ly1-K77) (Supplementary Fig. 8A).