PIK3CA Mutational Status Assessment

March 23, 2026 updated by: European Institute of Oncology

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

Evaluation of PIK3CA mutational status: a route towards a tailored diagnostic approach.

Study Overview

Status

Recruiting

Conditions

Detailed Description

Evaluate the effectiveness and concordance of molecular methods in identifying mutations affecting the PIK3CA gene both on paraffin tissue sections of the tumor and on liquid biopsy of patients with breast cancer treated at the IEO. The molecular test on the liquid biopsy of same patient could bring an important benefit considering that the withdrawal of this biomaterial turns out to be less invasive than a biopsy performed on an organ

Study Type

Observational

Enrollment (Estimated)

100

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Contact

Study Contact Backup

Study Locations

  • Italy
    • MI
      • Milan, MI, Italy, 20141
        • Recruiting
        • European Institute of Oncology
        • Contact:

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Ages Eligible for Study

  • Adult
  • Older Adult

Accepts Healthy Volunteers

No

Sampling Method

Probability Sample

Study Population

A total of n=100 PIK3CA-mutant HR+/HER2- metastatic breast cancer patients will be prospectively collected. The mutational status of PIK3CA will be assessed on patients' FFPE metastasis sample tissues using a NGS panel, which covers the entire length of PIK3CA (full gene coverage). Patients with mutant PIK3CA status will be involved in the study and their FFPE as well as plasma samples will be profiled with all the different techniques (one remaining NGS panel and 2 RT-PCR assays).

Description

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

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

What is the study measuring?

Primary Outcome Measures

Outcome Measure
Measure Description
Time Frame
Evaluation of PIK3CA mutational status: a path towards a "tailored" diagnostic approach.
Time Frame: 2 years
Investigate concordance between sequencing panels again generation (NGS) based on different principles and different RT-PCR assays in detecting mutations of PIK3CA.
2 years

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Sponsor

European Institute of Oncology

Investigators

  • Principal Investigator: Nicola Fusco, MD, Istituto Europeo di Oncologia

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start (Actual)

November 6, 2024

Primary Completion (Estimated)

December 31, 2026

Study Completion (Estimated)

December 31, 2030

Study Registration Dates

First Submitted

November 22, 2024

First Submitted That Met QC Criteria

November 22, 2024

First Posted (Actual)

November 26, 2024

Study Record Updates

Last Update Posted (Actual)

March 24, 2026

Last Update Submitted That Met QC Criteria

March 23, 2026

Last Verified

March 1, 2026

More Information

Terms related to this study

Other Study ID Numbers

  • IEO 2029

Drug and device information, study documents

Studies a U.S. FDA-regulated drug product

No

Studies a U.S. FDA-regulated device product

No

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

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