The proposed pharmaceutical compositions and methods connected thereto relate to the field of biotechnology and medicine, in particular to pharmaceutical compositions having an antiproliferative activity, and to a method of treating oncologic diseases, which includes introducing the aforementioned chimerical peptide into a mammal requiring such treatment. The object of the proposed compositions and methods is the development of a preparation that effectively penetrates the target cells and has a high cytostatic and cytotoxic action.
