Multicentric retrospective observational study for the significance of repeat sentinel lymphnode biopsy in patients with ipsilateral breast tumor recurrence (B-STRO)

Multicentric retrospective observational study for the significance of repeat sentinel lymphnode biopsy in patients with ipsilateral breast tumor recurrence (B-STRO) - MOTIVATION - Repeat SLNB

Status

Active, not recruiting

Phases

Unknown

Study type

Observational

Source

JPRN

Registry ID

JPRN-UMIN000060220

Enrollment

Registered

2026-01-05

Start date

2022-08-10

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

Ipsilateral breast tumor recurrence: IBTR

Interventions

None listed

Eligibility

Sex/Gender

All

Inclusion criteria

Inclusion criteria: 1) Patients aged 20 years or older who did not opt out 2) Patients diagnosed with histopathologically confirmed breast cancer 3) Patients with postoperative recurrence in the preserved breast

Exclusion criteria

Exclusion criteria: 1) Patients with obvious distant metastases at registration 2) Patients with concurrent active multiple cancers 3) Patients deemed unsuitable as study subjects by the principal investigator

Design outcomes

Primary

Measure	Time frame
Primary Endpoint: Distant Disease-Free Survival (DDFS)	—

Secondary

Measure	Time frame
Secondary Endpoints a) Relapse-Free Survival (RFS), b) Local Control Rate c) Lymphatic mapping success rate, d) The frequency of aberrant lymphatic flow outside the ipsilateral axilla, e) Sentinel lymph node detection rate, f) Sentinel lymph node metastasis rate, g) Adverse events (ipsilateral upper limb edema, upper limb motor paralysis, etc.)	—

Countries

Japan

Contacts

Public ContactHiroaki Shima

Sapporo Medical University Department Surgery, division of Breast Surgery

simahiro@sapmed.ac.jp+81-11-611-2111

Outcome results