The aim of this study was to investigate COTI-2 as a new treatment for TNBC...COTI-2 binding to mutant p53 was obtained using SPR...Highly synergistic growth inhibition, i.e. CI < 1, was found when COTI-2 was combined with doxorubicin in 6 different cell lines. In addition, docetaxel plus COTI-2 was synergistic in 4/6 cell lines, carboplatin plus COTI-2 was synergistic in 3/6, while cisplatin plus COTI-2 was synergistic in 2/6 cell lines...conclude that targeting mutant p53 with COTI-2 is a potential approach for treating p53-mutated TNBC...