Blood test could track breast cancer in real time

NCT ID NCT04906369

Terminated Knowledge-focused Sponsor: Mayo Clinic Source: ClinicalTrials.gov ↗

First seen Jun 25, 2026 · Last updated Jun 27, 2026 · Updated 1 time

Summary

This study looks at whether regular blood tests can detect changes in stage IV breast cancer during treatment. Researchers will collect blood samples from 150 adults with metastatic breast cancer and analyze them for tumor DNA. The goal is to see if these tests can spot when the cancer is getting worse, potentially helping doctors make better treatment decisions.

What this could mean

Our plain-language read of the trial. This is informational only — not medical advice or a prediction.

What this could lead to: If successful, this could lead to a simple blood test that helps doctors monitor metastatic breast cancer in real time and adjust treatment more effectively.
What could go wrong: This is an early-stage observational study, not a treatment trial. The blood test may not reliably detect cancer changes, and results may not improve patient outcomes.

This is an AI summary of the original study and may miss details. Read our disclaimer.

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Conditions

The condition(s) this trial relates to.

breast cancer breast carcinoma breast neoplasm metastatic neoplasm

As listed by the trial registrant

The condition terms exactly as the trial's registrant entered them.

ANATOMIC STAGE IV BREAST CANCER AJCC V8 METASTATIC BREAST CARCINOMA PROGNOSTIC STAGE IV BREAST CANCER AJCC V8

Blood test could track breast cancer in real time

Summary

What this could mean

Get notified about this study

Conditions

As listed by the trial registrant

Contacts and locations

Locations

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