The study of evaluation that primary tumor resection influences to circulating tumor cells on Stage IV breast cancer(JCOG1017-A1)

The study of evaluation that primary tumor resection influences to circulating tumor cells on Stage IV breast cancer(JCOG1017-A1) - The study of evaluation that primary tumor resection influences to circulating tumor cells on Stage IV breast cancer(JCOG1017-A1)

Status

Active, not recruiting

Phases

Unknown

Study type

Interventional

Source

JPRN

Registry ID

JPRN-UMIN000020574

Enrollment

160

Registered

2016-01-14

Start date

2015-10-13

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

metastatic brest cancer

Interventions

A: Systemic therapy alone B: Primary tumor resection plus systemic therapy

Eligibility

Sex/Gender

Female

Inclusion criteria

Inclusion criteria: 1)first registration to JCOG1017 2)Within 14 days from the date of second registration 3)Witten informed consent

Exclusion criteria

Exclusion criteria: no exclusion criteria at second registration

Design outcomes

Primary

Measure	Time frame
CTC-positive ratio, CTC-positive sustained ratio	—

Secondary

Measure	Time frame
CTC decrement, CTC decrease ratio	—

Countries

Japan

Contacts

Public ContactNaoto Kondo

Naogya City University Department of Oncology , Immunology & Surgery

JCOG_sir@ml.jcog.jp052-853-8231

Outcome results

None listed

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