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Metformin for the Treatment of Insulin Resistance in Women With Stage I-III Breast Cancer Completing Chemotherapy

NCT06763328 · Status: RECRUITING · Phase: PHASE3 · Type: INTERVENTIONAL · Enrollment: 200

Last updated 2026-01-22

No results posted yet for this study

Summary

This phase III trial evaluates how often women develop insulin resistance and type-2 diabetes and compares metformin with usual care to usual care alone in treating insulin resistance in women with stage I-III breast cancer after chemotherapy. Insulin resistance occurs when cells stop responding to insulin and is a risk factor for developing diabetes and heart disease. Higher levels of insulin have been shown to be associated with aggressive breast cancer. Metformin hydrochloride decreases the amount of glucose (a type of sugar) released into the bloodstream from the liver and increases the body's use of the glucose. Metformin as well as standard of care diet and exercise education is known to lower blood sugar. However, chemotherapy may accelerate metabolic disorders, such as high blood sugar, and the impact of metformin in these breast cancer survivors is not known. Giving metformin with usual care may be more effective than usual care alone in preventing or reversing insulin resistance in women with stage I-III breast cancer after chemotherapy.

Conditions

  • Anatomic Stage I Breast Cancer AJCC v8
  • Anatomic Stage II Breast Cancer AJCC v8
  • Anatomic Stage III Breast Cancer AJCC v8
  • Invasive Breast Carcinoma

Interventions

PROCEDURE

Biospecimen Collection

Undergo blood sample collection

OTHER

Educational Intervention

Receive standard of care healthy diet and exercise handouts

DRUG

Extended Release Metformin Hydrochloride

Given PO

OTHER

Questionnaire Administration

Ancillary studies

Sponsors & Collaborators

  • National Cancer Institute (NCI)

    collaborator NIH

  • City of Hope Medical Center

    lead OTHER

Principal Investigators

  • Victoria L Seewaldt · City of Hope Medical Center

Study Design

Allocation
RANDOMIZED
Purpose
SUPPORTIVE_CARE
Masking
NONE
Model
PARALLEL

Eligibility

Min Age
18 Years
Sex
FEMALE
Healthy Volunteers
No

Timeline & Regulatory

Start
2024-12-16
Primary Completion
2029-06-16
Completion
2029-06-16

Countries

  • United States

Study Locations

More Related Trials

Read the full study record

This page highlights key information. For complete eligibility criteria, study locations, investigator contacts, and the full protocol, visit the original record on ClinicalTrials.gov.

View NCT06763328 on ClinicalTrials.gov