MCL1 inhibition via AZD5991 cotreatment at the DTP stage revealed a trend toward delayed regrowth, although this failed to reach statistical significance (Fig. 4B; Supplementary Fig. S4B; note that apparent decrease in tumor size at the end of study in this group is due to removing two mice with large tumors due to poor condition; Supplementary Fig. S4C). This evidence concerns the gene MCL1 and neoplasm.