Interestingly, both Mcl1L and Mcl1LJAM only inhibited FASL- and TRAIL-induced apoptosis (Fig. 6AB), whereas they failed to rescue neuroblastoma and leukemia cells from etoposide or doxorubicin-induced cell death (Figure 6C and Supplemental figure 1AB). This evidence concerns the gene MCL1 and leukemia.