Multicenter retrospective study for identification of risk factors of ipsilateral breast tumor recurrence in breast cancer patients treated with breast conserving therapy after neoadjuvant chemotherapy

Multicenter retrospective study for identification of risk factors of ipsilateral breast tumor recurrence in breast cancer patients treated with breast conserving therapy after neoadjuvant chemotherapy - Retrospective study of risk factors of in-breast recurrence in women treated with neoadjuvant chemotherapy

Status

Active, not recruiting

Phases

Unknown

Study type

Observational

Source

JPRN

Registry ID

JPRN-UMIN000002655

Enrollment

300

Registered

2009-10-31

Start date

2009-11-01

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

Eligibility

Sex/Gender

Female

Inclusion criteria

Inclusion criteria: 1. patients who started neoadjuvant chemotherapy before January 1, 2007 2. patients who had a breast cancer of 2 cm or larger by palpation 3. patients who recieved neoadjuvant chemotherapy of 3 courses or more 4. patients who experienced partial mastectomy, and axillary dissection or sentinel node biospy 5. patients who had radiotherapy at least for the breast

Exclusion criteria

Exclusion criteria: 1. inflammatory breast cancer 2. non-invasive breast cancer 3. male breast cancer 4. patients with distant metastasis at diagnosis except for metastasis of supraclavicular lymph node or parasternal lymph node 5. patients treated with trastuzumab prior to surgery 6. patients treated with radiotherapy prior to surgery 7. patients treated with endocrine therapy 8. patients who received excisional biopsy prior to neoadjuvant chemotherapy

Design outcomes

Primary

Measure	Time frame
ipsilateral breast tumor recurrence rate	—

Countries

Japan

Contacts

Public ContactShozo Ohsumi

National Hospital Organization Shikoku Cancer Center Breast Oncology

sosumi@shikoku-cc.go.jp089-999-1111

Outcome results