AI-based pCR Assessment/Prediction in HER2-Positive BC Using PET/MRI

NCT ID: NCT06708910

Last Updated: 2025-09-24

Study Results

Results pending

The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.

Basic Information

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Recruitment Status

RECRUITING

Total Enrollment

460 participants

Study Classification

OBSERVATIONAL

Study Start Date

2025-07-18

Study Completion Date

2031-07-31

Brief Summary

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Goal of the observational study: Based on PET/MRI data it is possible to differentiate between complete and incomplete pathological remission after neoadjuvant systemic therapy in HER2-positive breast cancer patients.

The main question it aims to answer are:

Primary endpoint:

1\) Sensitivity and specificity as co-primary endpoints for identification of HER2-positive breast carcinoma with complete pathologic remission (pCR; yT0 yN0) using 18F-FDG PET/MRI (response assessment)

Secondary endpoint(s):

1. Accuracy for the identification of patients with HER2-positive breast carcinoma with complete pathologic remission (pCR; yT0 yN0) using 18F-FDG PET/MRI (response assessment)
2. Sensitivity, specificity, and accuracy for the identification of patients with HER2-positive breast carcinoma with complete pathologic remission (pCR) of the primary (yT0) after neoadjuvant therapy using 18F-FDG PET/MRI (response assessment)
3. Sensitivity, specificity, and accuracy for the identification of patients with HER2-positive breast carcinoma with complete pathologic remission (pCR) of locoregional lymph node metastases (yN0) after neoadjuvant therapy using 18F-FDG PET/MRI (response assessment)
4. Evaluation of pre-treatment (baseline) 18F-FDG PET/MRI for predicting therapy response of the primary and locoregional lymph node metastases in patients with HER2-positive breast carcinoma supported by artificial-intelligence (prediction)
5. Evaluation of 18F-FDG PET/MRI for predicting therapy response of the primary in patients with HER2-positive breast carcinoma after the first cycles of systemic therapy supported by artificial-intelligence (prediction)
6. Evaluation of 18F-FDG PET/MRI for predicting therapy response of locoregional lymph node metastases in patients with HER2-positive breast carcinoma after the first cycles of system therapy supported by artificial-intelligence (prediction)

The guideline-recommended staging procedure (S3 Germany) using CT will be replaced by a whole-body 18F-FDG PET/MRI, including dedicated 18F-FDG PET/MRI of the breast. The histopathologic results of tissue samples obtained during routine clinical treatment after successful neoadjuvant systemic therapy will serve as a reference standard.

The study protocol involves the following examinations for all included patients:

1. Baseline (pre-treatment) examination to substitute for the staging examinations specified in the S3 guideline: Initial whole-body 18F-FDG PET/MRI including 18F-FDG PET/MRI of the breast
2. Thoracic 18F-FDG PET/MRI including 18F-FDG PET/MRI of the breast after the first two cycles of systemic therapy
3. Thoracic 18F-FDG PET/MRI including 18F-FDG PET/MRI of the breast after completion of systemic therapy and immediately before clinically indicated surgery

Detailed Description

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Conditions

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HER2 Positive Breast Carcinoma

Study Design

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Observational Model Type

COHORT

Study Time Perspective

PROSPECTIVE

Eligibility Criteria

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Inclusion Criteria

* Female
* HER2-positive breast carcinoma
* legally competent female patients aged ≥ 18 years
* willing and able to attend scheduled examinations
* written informed consent for study participation
* decision to receive neoadjuvant systemic therapy / exclusion of distant metastases

Exclusion Criteria

* previous cancer diagnosis within the last five years or second, synchronous malignancy
* contraindication to MRI examination
* severe renal insufficiency
* pregnancy or lactation
Minimum Eligible Age

18 Years

Eligible Sex

FEMALE

Accepts Healthy Volunteers

No

Sponsors

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University Hospital, Essen

OTHER

Sponsor Role collaborator

Marienhospital Bottrop

UNKNOWN

Sponsor Role collaborator

Heinrich-Heine University, Duesseldorf

OTHER

Sponsor Role lead

Responsible Party

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Responsibility Role SPONSOR

Locations

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Department of Diagnostic and Interventional Radiology, Medical Faculty and University Hospital Duesseldorf, Heinrich-Heine-University Duesseldorf

Düsseldorf, North Rhine-Westphalia, Germany

Site Status RECRUITING

Countries

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Germany

Central Contacts

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PD Dr. med. Kirchner

Role: CONTACT

+492118117552

Dr. med. Jannusch

Role: CONTACT

+492118117552

Other Identifiers

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KI 2434/4-1

Identifier Type: OTHER_GRANT

Identifier Source: secondary_id

533909315

Identifier Type: -

Identifier Source: org_study_id

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