To characterize the interaction between MitoQ, DPI, and vincristine, we assessed their effects on cell death at IC50/2 and IC50/3 concentrations in four NB cell lines: Be(2)-C (MNA), IMR-32 (MNA), IMR-5/75 (MNA with MYCN downregulatable), and SH-SY5Y/MYCN (non-MNA, MYCN-inducible). The gene discussed is MYCN; the disease is neuroblastoma.