Conjugation of this peptide with siRNA contributed to the accumulation and manifestation of the biological activity of siRNA in tumor cells in culture (Alam et al., 2011) and in vivo following six intravenous injections in animals with xenograft A549 tumors (reduction of VEGFR2 gene mRNA by 55%), which was accompanied by a decrease in tumor growth (Liu et al., 2014) (Supplementary Table 1). The gene discussed is KDR; the disease is neoplasm.