Effect of different chemotherapy schemes on early-stage breast cancer patients with Low HER-2 expression

Objective: To explore the effect of different chemotherapy schemes on the prognosis, immune function and adverse reactions of breast cancer patients with low HER-2 expression after surgery. Methods: A retrospective analysis was carried out on the clinical data of 60 breast cancer patients with low HER-2 expression in Wuxi No.2 people's Hospital from January 2018 to December 2019. The enrolled patients were divided into two groups according to the different chemotherapy schemes. Patients in the DC group were treated with polyethylene glycol-coated liposome-encapsulated doxorubicin+cyclophosphamide, and those in the TC group were treated with TC (docetaxel+cyclophosphamide). Further comparison was performed on the difference in prognosis, immune function and adverse reaction between the two groups after different chemotherapy schemes. Results: After four courses of treatment, the IgG, CD4(+) and CD4(+)/CD8(+) values in the DC group after treatment were higher than those before treatment, while the IgG, CD3(+) and CD4(+) values in the TC group after treatment were lower than those before treatment(P<0.05). Meanwhile, the IgG, CD4(+) and CD4(+)/CD8(+) values in the DC group were better than those in the TC group after treatment(P<0.05). During the treatment, the adverse reactions of leukopenia, alopecia, nausea and vomiting in the DC group were significantly lower than those in the TC group (P<0.05). Conclusion: The chemotherapy combination of liposome-encapsulated doxorubicin+cyclophosphamide can significantly improve immune function and greatly reduce the occurrence of adverse reactions in early-stage breast cancer patients with low HER-2 expression after surgery. It has the same effect as docetaxel+cyclophosphamide in improving the prognosis of patients.