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A Prospective Cohort Study of Breast Partial Resection for Non-Invasive Ductal Carcinoma Under Polygon-Based High-Precision Margin Detection Without Radiation Therapy

A Prospective Cohort Study of Breast Partial Resection for Non-Invasive Ductal Carcinoma Under Polygon-Based High-Precision Margin Detection Without Radiation Therapy - A Prospective Cohort Study of Breast Partial Resection for Non-Invasive Ductal Carcinoma Under Polygon-Based High-Precision Margin Detection Without Radiation Therapy

Status
Recruiting
Phases
Unknown
Study type
Observational
Source
JPRN
Registry ID
JPRN-UMIN000060376
Enrollment
100
Registered
2026-01-26
Start date
2026-01-26
Completion date
Unknown
Last updated
2026-06-29

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Ductal carcinoma in situ

Interventions

None listed

Sponsors

National Hospital Organization Nagoya Medical Center
Lead Sponsor

Eligibility

Sex/Gender
Female

Inclusion criteria

Inclusion criteria: Patients must meet all of the following criteria

Exclusion criteria

Exclusion criteria: Patients meeting any of the following criteria shall not be included in this study. (1) Patients with active concurrent or multiple cancers (synchronous or multiple cancers, and metachronous or multiple cancers with a disease free interval of 5 years or less. However, a history of the following pathologic stages of cancer that was completely resected shall not be included as active concurrent or multiple cancer, even if the disease free interval is less than 5 years). Gastric cancer "adenocarcinoma (general type)": Stage 0 I, Colon cancer (adenocarcinoma): Stage 0 I, Rectal cancer (adenocarcinoma): Stage 0 I, Esophageal cancer (squamous cell carcinoma, adenosquamous carcinoma, basaloid carcinoma): Stage 0, Cervical cancer (squamous cell carcinoma): Stage 0, Thyroid cancer (papillary carcinoma, follicular carcinoma): Stage I, II, III, Renal cell carcinoma (clear cell carcinoma, clear cell carcinoma): Stage I Staging classification generally follows the UICC TNM 7th edition or equivalent cancer classification guidelines. (2) Patients confirmed to be BRCA positive. (3) Patients with metastasis to regional lymph nodes. (4) Patients deemed inappropriate for participation in this study by the principal investigator or co-investigator.

Design outcomes

Primary

MeasureTime frame
3-Year Cumulative Ipsilateral Breast Incidence Rate

Secondary

MeasureTime frame
3-Year Cumulative Contralateral Breast Incidence Rate Overall Survival Rate

Countries

Japan

Contacts

Public ContactMasataka Sawaki

National Hospital Organization Nagoya Medical Center Breast Surgery, Breast Center

masataka.sawaki@outlook.jp052-951-1111

Outcome results

None listed

Source: JPRN (via WHO ICTRP) · Data processed: Jul 3, 2026