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Active, not recruiting No phase listed Observational

ACT-MBC: A Study of Circulating Tumor Cells (CTCs) in Metastatic Breast Cancer (MBC)

ClinicalTrials.gov ID: NCT05662345

Public ClinicalTrials.gov record NCT05662345. Field values are reproduced from the official study page; the official ClinicalTrials.gov record remains the source of truth for eligibility, enrollment, and contact information.

ClinicalTrials.gov public records Last synced Nov 11, 2026, 6:34 PM EST

All trial information on this site comes from the official ClinicalTrials.gov public API (clinicaltrials.gov/api/v2), run by the U.S. National Library of Medicine. We only display that public information; we do not add opinions, endorsements, or any other intent. Always review the official ClinicalTrials.gov record for the latest information.

Official title

ACT-MBC: A Prospective Observational Impact Study of Circulating Tumor Cells (CTCs) in Metastatic Breast Cancer

Brief summary

Reproduced verbatim from the official ClinicalTrials.gov record. Not medical advice.

ACT-MBC prospectively assesses the impact of CTCs on treatment decisions, response assessment and prognosis in MBC patients.

Study identification

NCT ID
NCT05662345
Recruitment status
Active, not recruiting
Study type
Observational
Phase
Not listed
Enrollment
65 participants

Conditions and interventions

Interventions

Diagnostic Test

Eligibility (public fields only)

Age range
18 Years and older
Sex
All
Healthy volunteers
Healthy volunteers not accepted

This page does not interpret eligibility. Detailed inclusion and exclusion criteria are on the official ClinicalTrials.gov record.

Study timeline

Start date
Dec 12, 2022 (Actual)
Primary completion
Nov 14, 2025 (Actual)
Completion
Oct 2026 (Estimated)
Last update posted
Mar 17, 2026

2022 – 2026

United States locations

U.S. sites
4
U.S. states
2
U.S. cities
4
Facility City State ZIP Site status
Mayo Clinic Health System Albert Lea Albert Lea Minnesota 56007 —
Mayo Clinic Health System Mankato Mankato Minnesota 56001 —
Mayo Clinic Rochester Minnesota 55905 —
MCHS Eau Claire Eau Claire Wisconsin 54703 —

Site contact phone numbers, emails, and investigator names are intentionally not displayed here. Open the official ClinicalTrials.gov record for site contact information.

About this trial record page

What this page shows
Public field values for ClinicalTrials.gov record NCT05662345, including study identification, conditions, interventions, eligibility (age, sex, healthy volunteer), timeline, and U.S. site list.
What this page does not do
No medical advice, eligibility judgments, treatment recommendations, study quality scoring, or AI-generated medical summaries. No site contact phone numbers, emails, or investigator names.
Where the data comes from
Sourced from the official ClinicalTrials.gov public API. The official record is the source of truth.
Last refresh
Last update posted Mar 17, 2026 · Synced Nov 11, 2026

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Open the official record

The complete public registry record, listed eligibility criteria, and available contact information for NCT05662345 live on ClinicalTrials.gov.

View official ClinicalTrials.gov record →