- Conditions
- Breast Ductal Carcinoma In Situ
- Interventions
- Laboratory Biomarker Analysis, Trastuzumab, Whole Breast Irradiation
- Other · Biological · Radiation
- Lead sponsor
- National Cancer Institute (NCI)
- NIH
- Eligibility
- 18 Years and older · Female only
- Enrollment
- 2,014 participants
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2008 – 2025
- U.S. locations
- 1249
- States / cities
- Anniston, Alabama • Mobile, Alabama • Anchorage, Alaska + 764 more
Source: ClinicalTrials.gov public record
Updated Jun 11, 2025 · Synced May 21, 2026, 5:58 PM EDT