Clinical trial · Interventional
Neoadjuvant Chemotherapy With or Without Metformin in Early Breast Cancer.
NCT04387630CI-TRIAL-00045512unknownPhase 2 / Phase 3ClinicalTrials.gov clinicaltrialsProvenance
- Source
- ClinicalTrials.gov
- Retrieved
- Sep 8, 2026
- Layer
- normalized (units and labels harmonized; values unchanged)
- Run
- ING-CLINICALTRIALS-20260908-000001
Summary
Brief summary (as posted)
Metformin is a widely used anti-diabetic drug. Several studies have pointed out a potentially beneficial effect of metformin therapy in diabetic cancer patients. Several studies are investigating the anti-tumor effect of metformin in early breast cancer. However, the enhancing effect of metformin on anti-tumor immunity has only been demonstrated in animal models. This study examines the immune effect of metformin in breast cancer patients treated with preoperative chemotherapy.
Conditions
Conditions (1)
Free-text conditions as registered, with the CancerIndex entity they were reconciled to and the match type.
| Condition (as posted) | Mapped entity | Match | Confidence |
|---|---|---|---|
| Breast Cancer | Malignant Breast Neoplasm | CURATED_EXACT | 0.92 |
Interventions
Interventions (2)
| Intervention | Type | Mapped drug | Match |
|---|---|---|---|
| Metformin | Drug | Metformin | ALIAS |
| Placebo oral tablet | Drug | — | UNRESOLVED |
Design
Arms and outcomes
Arms (2)
- type
- EXPERIMENTAL
- label
- metformin group
- description
- metformin 850 mg once daily increased within 3 weeks to a maximum dose of 2550 mg on three divided daily doses. Neoadjuvant cytotoxic chemotherapy as per MDT (multi-disciplinary team) decision. Patients scheduled for AC-T (adriamycin, Cyclophosphamide, paclitaxel) or AC (adriamycin, cyclophosphamide) will be eligible to randomization.
- interventionNames
- Drug: Metformin
- type
- PLACEBO_COMPARATOR
- label
- Placebo group
- description
- placebo. Neoadjuvant cytotoxic chemotherapy as per MDT(multi-disciplinary team) decision. Patients scheduled for AC-T (adriamycin, Cyclophosphamide, paclitaxel) or AC (adriamycin, cyclophosphamide) will be eligible to randomization.
- interventionNames
- Drug: Placebo oral tablet
Primary outcomes (1)
Eligibility
Eligibility (as posted)
- Sex
- Female
- Minimum age
- 18 Years
- Maximum age
- 65 Years
Show eligibility criteria text
Inclusion Criteria: * Histologically proven breast carcinoma. * American Society of Anesthesiology (ASA) score I-II. * Candidate for neoadjuvant chemotherapy as per hospital's protocol. * Clinically measurable tumor. * No evidence of distant metastasis. * Normal renal and liver functions. * Non-diabetics. Exclusion Criteria: * Pregnant or lactating women. * Metastatic breast cancer patients. * Patients with hepatic impairment. * Patients with renal impairment. * Diabetics. * Patients unwilling to participate or withdrawing from the trial. * Psychological/ mental impairment.
References
Publications (3)
- BACKGROUNDEikawa S, Nishida M, Mizukami S, Yamazaki C, Nakayama E, Udono H. Immune-mediated antitumor effect by type 2 diabetes drug, metformin. Proc Natl Acad Sci U S A. 2015 Feb 10;112(6):1809-14. doi: 10.1073/pnas.1417636112. Epub 2015 Jan 26. PMID 25624476
- BACKGROUNDPearce EL, Walsh MC, Cejas PJ, Harms GM, Shen H, Wang LS, Jones RG, Choi Y. Enhancing CD8 T-cell memory by modulating fatty acid metabolism. Nature. 2009 Jul 2;460(7251):103-7. doi: 10.1038/nature08097. Epub 2009 Jun 3. PMID 19494812
- BACKGROUNDCoyle C, Cafferty FH, Vale C, Langley RE. Metformin as an adjuvant treatment for cancer: a systematic review and meta-analysis. Ann Oncol. 2016 Dec;27(12):2184-2195. doi: 10.1093/annonc/mdw410. Epub 2016 Sep 28. PMID 27681864