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International Retrospective Cohort Study of Locoregional and Systemic Therapy in Oligometastatic Breast Cancer

International Retrospective Cohort Study of Locoregional and Systemic Therapy in Oligometastatic Breast Cancer - OLIGO-BC1

Status
Recruiting
Phases
Unknown
Study type
Observational
Source
JPRN
Registry ID
JPRN-UMIN000030047
Enrollment
700
Registered
2018-01-01
Start date
2018-02-01
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

metastatic breast cancer

Interventions

None listed

Sponsors

FACO (Federation of Asian Clinical Oncology)
Lead Sponsor

Eligibility

Sex/Gender
Female

Inclusion criteria

Inclusion criteria: 1 recurrent case performed by curative operation 2 oligometastatic breast cancer defined as in the protocol 3 oligometastatic breast cancer diagnosed between 2005 and 2012 4 systemic therapy or locoregional and systemic therapy performed 5 the order of locoregional therapy and systemic therapy is decided at the physicians discretion

Exclusion criteria

Exclusion criteria: 1 recurrent case with any kind of pleural effusion 2 recurrent case with any kind of ascites beyond a physiological condition 3 recurrent case with any kind of pericardiac effusion 4 recurrent case with a non-curative operation of primary breast cancer, except for cases with a positive surgical margin with noninvasive cancer or cases of sentinel lymph nodes with isolated tumor cells or micrometastases in which axillary lymph node dissection was not performed 5 recurrent case of ipsilateral breast tumor 6 recurrent case with no pathological confirmation of primary breast cancer 7 recurrent case with a past history of other invasive cancer 8 recurrent case with severe or life threatening comorbidity due to myocardial infarction, cerebral infarction, diabetes mellitus, autoimmune disease

Design outcomes

Primary

MeasureTime frame
The primary endpoint is the estimated 5-year OS after the initial diagnosis of oligometastatic BC.

Countries

Japan,Asia(except Japan)

Contacts

Public ContactMami Sakurai

FACO (Federation of Asian Clinical Oncology) Office

faco-office@jsco.or.jp03-5542-0546

Outcome results

None listed

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