The present invention relates to a regimen for the administration of a pyrimidylaminobenzamide of formula I as defined herein for the treatment of proliferative disorders, particularly solid and liquid tumors, and other pathological conditions mediated by the Bcr-AbI oncoprotein, the cell transmembrane tyrosine kinase receptor c-Kit, DDR1 (discoidin domain receptor 1), DDR2 (discoidin domain receptor 2) or PDGF-R (platelet derived growth factor receptor) kinase activity.