“…Treatment with tyrosine kinase inhibitors (TKIs), as targeted therapeutic drugs in oncology, has already revealed great results [ 16 ]. The first TKI used was imatinib, but due to many resistances in CML treatment [ 16 , 17 ], it was urgent to develop second-generation (dasatinib, nilotinib, and bosutinib) [ 18 , 19 , 20 , 21 , 22 , 23 , 24 ], third-generation (ponatinib, olverembatinib, and vodobatinib) [ 18 , 25 , 26 , 27 , 28 , 29 , 30 , 31 ], and fourth-generation (PF-114) TKIs [ 31 ]. The deadliest mutation, and in fact a frequent one, that develops resistance to nilotinib is the “gatekeeper” mutation T315I, where isoleucine replaces threonine in position 315 of Bcr-Abl [ 10 , 13 ].…”