Andrey V. Panchenko (N.N. Petrov National Medical Research Center of Oncology, Saint-Petersburg) in his report “Possibilities of using new polymeric polyphenol complex BP-C3 for the adjunct treatment of patients receiving chemotherapy” presented original data on the effects of BP-C3 on toxicity induced with 5-fluorouracyl in SHR mice and on efficacy of chemotherapy applied to mammary carcinoma bearing FVB/N mice transgenic with HER-2/neu. This evidence concerns the gene ERBB2 and breast carcinoma.