On the 26th day after beginning the treatment, the mean tumor volume in the group of mice receiving injection of 111In-NOTA-DTox-HMP-NLS-EGF (52 ± 15 mm3) was 9 times less than the mean tumor volume in the control group injected with saline (402 ± 78 mm3). The gene discussed is EGF; the disease is neoplasm.