Using moxifloxacin with chemotherapy for operable breast cancer

A Multicenter, Placebo-Controlled, Phase III Trial of Standard Adjuvant Chemotherapy Plus Moxifloxacin in Operable Breast Cancer

PHASE3 · Sun Yat-sen University · NCT05114720

This study is testing if adding the antibiotic moxifloxacin to standard chemotherapy helps people with operable breast cancer live longer without their disease coming back.

Quick facts

PhasePHASE3
Study typeInterventional
Enrollment520 (estimated)
Ages18 Years to 70 Years
SexFemale
SponsorSun Yat-sen University (other)
Drugs / interventionschemotherapy
Locations1 site (Guangzhou, Guangdong)
Trial IDNCT05114720 on ClinicalTrials.gov

What this trial studies

This phase 3 clinical trial aims to compare the disease-free survival of patients with operable breast cancer who are treated with standard adjuvant chemotherapy combined with moxifloxacin versus those receiving a placebo. It is a multicenter, randomized, double-blind, placebo-controlled study designed to assess both the efficacy and safety of this combination treatment. The trial plans to enroll up to 520 subjects to gather robust data on the potential benefits of adding moxifloxacin to standard chemotherapy.

Who should consider this trial

Good fit: Ideal candidates are women with histologically confirmed invasive ductal carcinoma who are planned to receive (neo)adjuvant chemotherapy and have an ECOG score of 0 to 1.

Not a fit: Patients who are pregnant, breastfeeding, or have an ECOG score of 2 or higher may not benefit from this study.

Why it matters

Potential benefit: If successful, this treatment could improve disease-free survival rates for patients with operable breast cancer.

How similar studies have performed: Other studies have explored the use of antibiotics in cancer treatment, but the specific combination of moxifloxacin with chemotherapy in this context is relatively novel.

Eligibility criteria

Show full inclusion / exclusion criteria
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. Normal blood routine, liver and kidney functions within 1 week before enrollment in this study;
6. 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.
7. Compliance with the study protocol.

Exclusion Criteria:

1. Pregnant or breast feeding;
2. Eastern Cooperative Oncology Group (ECOG) score ≥ 2;
3. Hypersensitivity to moxifloxacin or quinolones compounds;
4. Concomitant with other antitumor therapies or participating in other clinical trials;
5. Have a history of heart disease, such as arrhythmia, conduction block, S-T segment elevation, ischemic heart disease, or congenital heart disease;
6. Severe uncontrolled co-infection, or severe metabolic disorders;
7. A clear past history of neurological or psychiatric disorders, including epilepsy or dementia;
8. Poor compliance, unwillingness or inability to follow protocol to continue the study;
9. Any circumstances in which the investigator deemed the subject unsuitable for enrollment in this study.

Where this trial is running

Guangzhou, Guangdong

Study contacts

How to participate

  1. Review the eligibility criteria above with your treating physician.
  2. Visit the official trial page on ClinicalTrials.gov for the most current contact information and recruitment status.
  3. Contact the listed study coordinator or principal investigator to request pre-screening. Pre-screening is free and never obligates you to enroll.

View on ClinicalTrials.gov →

Conditions: Breast Cancer, moxifloxacin, operable breast cancer, adjuvant treatment, disease-free survival, safety

Last reviewed 2026-05-15 by the Find a Trial editorial team. Information on this page is for educational purposes and is not medical advice. Always consult qualified healthcare professionals about clinical trial participation.