Medical Information Only. Always consult your healthcare provider before enrolling in any clinical trial.
Metformin and Nightly Fasting in Women With Early Breast Cancer
NCT05023967 · View on ClinicalTrials.gov ↗
Study Summary
This phase IIb trial studies the combined effect of prolonged nightly fasting and metformin hydrochloride extended release in decreasing breast tumor cell proliferation and other biomarkers of breast cancer. Preventing invasive breast cancer or DCIS. Metformin is widely used to treat type II diabetes and is associated with a decreased risk of cancer and death in diabetic individuals. Intermittent fasting may protect cancer patients from the toxic effects of chemotherapy agents without causing chronic weight loss. The combination of intermittent fasting and metformin may reduce breast cancer growth and may be used in women at risk for breast cancer or other cancers associated with being overweight.
Conditions Studied
Interventions
- PROCEDURE Biospecimen Collection
- OTHER Monitoring
- DRUG Extended Release Metformin Hydrochloride
- OTHER Nutritional Assessment
- OTHER Short-Term Fasting
Study Locations (3)
Other
- Galliera Hospital — Genoa
- European Institute of Oncology — Milan
Texas
- M D Anderson Cancer Center — Houston
Trial Details
| Field | Value |
|---|---|
| Enrollment Target | 120 participants |
| Start Date | 2023-04-04 |
| Est. Completion | 2026-12-16 |
| Phase | Phase 2 |
Interested in This Trial?
Always speak with your doctor before enrolling in a clinical trial.
Full Details on ClinicalTrials.gov ↗What the Registry Record Tells You About NCT05023967
The ClinicalTrials.gov registry entry for NCT05023967 describes a study currently listed as active not recruiting. It is categorized as Phase 2, which is the standard way researchers label where a study sits along the investigational pathway from early safety work through later efficacy and post-marketing evaluation. The registered enrollment target is 120 participants, a figure that helps gauge the scale of data the investigators plan to collect. The listed sponsor is M.D. Anderson Cancer Center, which has 2,992 total studies on file at ClinicalTrials.gov, and sponsors are the parties responsible for study design, oversight, and regulatory filings.
The record links to 4 conditions, with Anatomic Stage II Breast Cancer AJCC v8 appearing as the primary indexed condition, and to 5 interventions — of which Biospecimen Collection is the first listed. Interventions can include drugs, devices, procedures, behavioral programs, or observational arms, and each is tracked as a separate registry field so that downstream queries can filter accurately. When a trial lists multiple interventions, it usually reflects a multi-arm design or a comparison protocol rather than a single treatment being tested in isolation. The brief summary published in the registry is the clearest source of protocol intent and should be read before drawing conclusions from any sidebar tags.
Geographic footprint matters for practical reasons: NCT05023967 reports 3 study locations spanning 2 distinct geographic areas — top geographies include Other, Texas. A larger site network tends to correlate with broader recruitment capacity, but it does not imply anything about study quality, and site-level enrollment status can diverge from the overall registry status shown above. Every data point on this page comes from the public ClinicalTrials.gov dataset and is reproduced here for reference only; it is not a medical recommendation, an endorsement of the sponsor, or an invitation to enroll. Verify current status, eligibility criteria, and contact details directly at ClinicalTrials.gov, and discuss any participation decision with your own healthcare provider.
Frequently Asked Questions
What is clinical trial NCT05023967 about?
NCT05023967 is a clinical study titled "Metformin and Nightly Fasting in Women With Early Breast Cancer". This phase IIb trial studies the combined effect of prolonged nightly fasting and metformin hydrochloride extended release in decreasing breast tumor cell proliferation and other biomarkers of breast cancer. Preventing invasive breast cancer or DCIS. Metformin is widely used to treat type II diabete...
What is the current status of trial NCT05023967?
This trial is currently active not recruiting. It is a Phase 2 study. The enrollment target is 120 participants. The study started on 2023-04-04. Estimated completion is 2026-12-16.
What conditions does trial NCT05023967 study?
This clinical trial studies the following conditions: Anatomic Stage II Breast Cancer AJCC v8, Anatomic Stage I Breast Cancer AJCC v8, Invasive Breast Carcinoma, Breast Ductal Carcinoma In Situ. These conditions were identified from the trial registry and reflect the primary focus areas of the research.
What interventions are being tested in trial NCT05023967?
The interventions under investigation include: Biospecimen Collection (PROCEDURE), Monitoring (OTHER), Extended Release Metformin Hydrochloride (DRUG), Nutritional Assessment (OTHER), Short-Term Fasting (OTHER). Each intervention is being evaluated for safety and efficacy as part of this clinical study.
Who is sponsoring clinical trial NCT05023967?
This trial is sponsored by M.D. Anderson Cancer Center, which has 2,992 total clinical trials registered on ClinicalTrials.gov. The sponsor is responsible for the study's design, funding, and regulatory compliance.
Where is trial NCT05023967 being conducted?
This trial has 3 study locations across Texas. Contact the study sites directly through ClinicalTrials.gov for enrollment availability.
Learn More About Clinical Trials
How Clinical Trials Work
Understand phases 1-4, trial design, randomization, and the informed consent process.
Patient Rights in Clinical Trials
Your rights as a participant: consent, withdrawal, privacy, and who to contact.
Finding the Right Clinical Trial
A practical guide to searching trials, understanding eligibility, and evaluating options.
All Guides
Browse our complete library of clinical trial educational resources.
Read our methodology — how this data is sourced, computed, and verified.