IFNA1 and chronic myelogenous leukemia, BCR-ABL1 positive: In this study, we expressed this heptapeptide KLWVIPQ by transfecting the expressing plasmid into the IFN-α-sensitive KT-1/A3 and the IFN-α-resistant KT-1/A3R CML cell lines to decipher the roles of the heptapeptide KLWVIPQ in IFN-α-mediated effects on CML.