- Conditions
- Atypical Ductal Breast Hyperplasia, BRCA1 Mutation Carrier, BRCA2 Mutation Carrier, Ductal Breast Carcinoma in Situ, Lobular Breast Carcinoma in Situ
- Interventions
- metformin hydrochloride, placebo
- Drug · Other
- Lead sponsor
- Alliance for Clinical Trials in Oncology
- Other
- Eligibility
- 25 Years to 55 Years · Female only
- Enrollment
- 86 participants
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2015 – 2026
- U.S. locations
- 27
- States / cities
- Duarte, California • Los Angeles, California • South Pasadena, California + 18 more
Source: ClinicalTrials.gov public record
Updated Apr 27, 2026 · Synced May 21, 2026, 10:11 PM EDT