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A multicenter study of patient questionnaires regarding the omission of breast surgery

A multicenter study of patient questionnaires regarding the omission of breast surgery - A multicenter study of patient questionnaires regarding the omission of breast surgery

Status
Active, not recruiting
Phases
Unknown
Study type
Unknown
Source
JPRN
Registry ID
JPRN-UMIN000045468
Enrollment
200
Registered
2021-09-13
Start date
2021-09-13
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

breast cancer

Interventions

None listed

Sponsors

Mie University Hospital
Lead Sponsor

Eligibility

Sex/Gender
All

Inclusion criteria

Inclusion criteria: Patients who received neoadjuvant chemotherapy for HER2 receptor-positive or estrogen receptor-negative stage 1 to 3 breast cancer between April 1, 2012 and December 31, 2020 and achieved clinical response.

Exclusion criteria

Exclusion criteria: * Patients who did not undergo curative surgery after neoadjuvant chemotherapy * Patients with postoperative recurrence (regardless of site) * Patients diagnosed with hereditary breast cancer-ovarian cancer syndrome

Design outcomes

Primary

MeasureTime frame
Patient Intentions Regarding the Impact of the Introduction of Abbreviated Breast Surgery on Local Recurrence Rates and Survival—

Countries

Japan

Contacts

Public ContactMakoto Ishitobi

Mie University Hospital Breast Surgery

m-ishitobi@clin.medic.mie-u.ac.jp059-232-1111

Outcome results

None listed

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