Impressively, DPI (similar to NAC) caused a robust abrogation of ROS generation in Mcl-1 deficient cells as compared with the Mcl-1 proficient cells during CIS conditions after 24 hours of culture with doxorubicin, a time point that significant differences in ROS production can be observed (Figure 4D). The gene discussed is MCL1; the disease is in situ carcinoma.