Assessing PIK3CA mutations in metastatic breast cancer

PIK3CA Mutational Status Assessment: Towards a "Tailored" Diagnostic Approach

European Institute of Oncology · NCT06706570

This study is testing a new way to find PIK3CA gene mutations in patients with metastatic breast cancer using both tissue samples and blood tests to see if it can help tailor treatments better.

Quick facts

Study typeObservational
Enrollment100 (estimated)
Ages18 Years and up
SexFemale
SponsorEuropean Institute of Oncology (other)
Drugs / interventionschemotherapy
Locations1 site (Milan, MI)
Trial IDNCT06706570 on ClinicalTrials.gov

What this trial studies

This study evaluates the effectiveness of molecular methods to identify mutations in the PIK3CA gene in patients with metastatic breast cancer. It compares results from paraffin tissue sections and liquid biopsies, aiming to establish a less invasive diagnostic approach. By analyzing both types of samples, the study seeks to improve the accuracy of mutation detection, which could lead to more personalized treatment strategies for patients.

Who should consider this trial

Good fit: Ideal candidates are patients with ER+ and/or PgR+ HER2-negative metastatic breast cancer who have not yet received treatment.

Not a fit: Patients who have already undergone treatments such as chemotherapy or hormone therapy may not benefit from this study.

Why it matters

Potential benefit: If successful, this study could lead to more tailored and effective treatment options for patients with metastatic breast cancer.

How similar studies have performed: Other studies have shown promise in using liquid biopsies for mutation detection, indicating a growing interest in this less invasive approach.

Eligibility criteria

Show full inclusion / exclusion criteria
Inclusion Criteria:

* Participant has a histologically and/or cytologically confirmed diagnosis of ER+ and/or PgR+ breast cancer by local laboratory.
* Participant has HER2-negative breast cancer defined as a negative in situ hybridization test or an IHC status of 0, 1+ or 2+. If IHC is 2+, a negative in situ hybridization (Fluorescent in situ hybridization (FISH), Chromogenic in situ hybridization (CISH), or Silver-enhanced in situ hybridization (SISH)) test is required by local laboratory testing.
* Participants should be at advanced or metastatic setting prior to treatment.
* Written informed consent must be signed and dated by the patient and the investigator prior to inclusion.
* Patients must be accessible for follow-up.

Exclusion Criteria:

• patients already treated with different treatments like chemotherapy, hormone therapy etc

Where this trial is running

Milan, MI

Study contacts

How to participate

  1. Review the eligibility criteria above with your treating physician.
  2. Visit the official trial page on ClinicalTrials.gov for the most current contact information and recruitment status.
  3. Contact the listed study coordinator or principal investigator to request pre-screening. Pre-screening is free and never obligates you to enroll.

View on ClinicalTrials.gov →

Conditions: Breast Cancer Metastatic

Last reviewed 2026-05-15 by the Find a Trial editorial team. Information on this page is for educational purposes and is not medical advice. Always consult qualified healthcare professionals about clinical trial participation.