Effect of GM1 in Prevention of Taxanes Induced Neurotoxicity in Operable Breast Cancer

Introduction： Taxanes is a key agent in the treatment of breast cancer. However, peripheral neuropathy markedly limits the use of taxanes. Unfortunately, current studies have neither revealed a clear mechanism nor established an effective treatment for Taxane-induced peripheral neuropathy (TIPN). Monosialotetrahexosyl ganglioside (GM1) functions as a neuroprotective factor. This multi-center, randomized, placebo-controlled trial was performed to assess the efficacy of GM1 fo preventing taxanes induced neurotoxicity in operable breast cancer patients who received taxanes-based adjuvant chemotherapy. OBJECTIVES: Primary Objective: To evaluate the efficacy of gangliosides in the prevention of neurotoxicity in breast cancer patients treated with taxane-based chemotherapy. That is, to compare the differences in the scores of Functional Assessment of Cancer Treatment Neurotoxicity (FACT-Ntx) between the patients treated by GM1(the treatment group) and the placebo (the control group) at 2 weeks after completion of 4-cycles of taxane-based chemotherapy. Secondary * To compare the differences in the scores of Eastern Cooperative Oncology Group neuropathy scale between the patients treated by gangliosides (the experimental group) and the placebo (the control group); * Tocompare the incidence of neurotoxic adverse events caused by taxane-based chemotherapy. That is, the difference between the patients of chemotherapy treated by gangliosides (the experimental group) and the placebo (the control group) in terms of the incidence of neurotoxicity (graded according to the NCI-CTCAE version 4.0 grading scale); * Assess the safety and tolerance of the two treatment groups (ganglioside and placebo groups). OUTLINE: This is a randomized, double-blind, placebo-controlled study. Patients with early-stage breast cancer planning to receive taxane-based adjuvant chemotherapy were randomly assigned to receive GM1 (80 mg, Day -1 to Day 2) or placebo treatment. Treatment group: Monosialotetrahexosylganglioside sodium is added into 250 mL of 0.9% sodium chloride injection, which is given once a day via intravenous drip infusion for 3 days. The first dose is given at 1 day before the start of the chemotherapy. At the same time, the patients are treated with a taxane-based chemotherapy selected by the investigators. Placebo group: Placebo is added into 250 mL of 0.9% sodium chloride injection, which is given once a day via intravenous drip infusion for 3 days. The first dose is given at 1 day before the start of the chemotherapy. At the same time, the patients are treated with a taxane-based chemotherapy selected by the investigators. The screening and baseline peripheral neurotoxicity assessment was performed 1 day before the start of the first course of taxane-containing chemotherapy. The subjects will be treated by the study drugs according to the schedule until the completion of established taxane-based adjuvant chemotherapy, the onset of unacceptable toxicity, or when the patient withdraw from the study voluntarily. Endpoint assessments including FACT-Ntx subscale, CTCAE version 4.0 grading scale and ENS subscales were performed at 2 weeks after each course of chemotherapy. Additional long-term assessments were performed at 3 months, 6 months and 1 year after the end of chemotherapy. The follow-up will be carried out until 2 years after the enrollment time of the last patient.