Difficulty accruing subjects the study accrual was closed

The purpose of this study is to evaluate the prophylactic effects of Ganglioside-Monosialic Acid in post-chemotherapy cognitive impairment in patients with early operable breast cancer.

This is a multicenter, prospective, randomized, single-blind, phase III clinical trial. The primary endpoint is the changes of cognitive function from baseline to 4 weeks after the completion of adjuvant chemotherapy in the experimental group and the control group, which were evaluated by HVLT-R scale. This study is designed to recruit up to 306 subjects.

Inclusion Criteria:

1. Have provided written and signed informed consent;
2. Histologically confirmed invasive ductal carcinoma;
3. Planned to received (neo)/adjuvant chemotherapy;
4. Eastern Cooperative Oncology Group (ECOG) score of 0 to 1;
5. Can cope with HVLT-RDR and ADAS-Cog evaluation;
6. No prior therapy could induce neurological damage,within 4 weeks
7. Normal blood routine, liver and kidney functions within 1 week before enrollment in this study;
8. Women of childbearing age have a negative serum or urinary pregnancy tests prior to enrollment in this study; Pre-menopause women are contracepted with medically acceptable methods during the study period.
9. Compliance with the study protocol.

Exclusion Criteria:

1. Eastern Cooperative Oncology Group (ECOG) score ≥ 2;
2. Hypersensitivity to experiment agents or components;
3. Women with pregnancy or breast feeding;
4. A clear past history of neurological or psychiatric disorders, including epilepsy or dementia;
5. Abnormal baseline impairment of cognitive impairment;
6. Poor compliance, unwillingness or inability to follow protocol to continue the study;
7. Any circumstances in which the investigator deemed the subject unsuitable for enrollment in this study.