Liquid Biopsy Under PSMA Radioligand Therapy

NCT ID: NCT07118436

Last Updated: 2025-08-12

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

100 participants

Study Classification

OBSERVATIONAL

Study Start Date

2024-09-01

Study Completion Date

2028-08-31

Brief Summary

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Prostate cancer is the second most common cause of cancer death in men worldwide. After exhausting guideline-compliant therapies or in accordance with the approval of 177Lu-PSMA-617 (Pluvicto®), patients with metastatic castration-resistant prostate cancer (mCRPC) can be offered radioligand therapy (RLT) that targets the prostate-specific membrane antigen (PSMA). Despite an initially high response rate to PSMA-RLT, the disease often progresses rapidly again. The underlying mechanisms are still poorly understood.

Liquid biopsy (LBx) involves the collection and analysis of body fluids, particularly blood. Its major advantage compared to a tissue sample is its non-invasive nature, allowing for multiple samplings, as well as the examination of more than just a single punctured lesion. Among other things, circulating tumor DNA (ctDNA) can be detected in the blood.

The aim of this study is to apply LBx before, during, and after PSMA-RLT in patients with mCRPC to determine prognostic factors before therapy and to assess the value of LBx in evaluating treatment response. Furthermore, LBx will be used to gather information on the course of potential tumor heterogeneities and to determine resistance mechanisms against PSMA-RLT.

To this end, patients receiving PSMA-RLT will be enrolled in the study at three sites (University Hospital Wuerzburg, University Hospital Augsburg, Klinikum rechts der Isar Munich). The evaluation of clinical and imaging parameters will be carried out centrally at the University Hospital Wuerzburg, while the analysis of LBx will be performed at the University Hospital Augsburg.

Detailed Description

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Conditions

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Prostate Cancer Metastatic Castration-Resistant Prostate Cancer

Study Design

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Observational Model Type

COHORT

Study Time Perspective

PROSPECTIVE

Eligibility Criteria

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Inclusion Criteria

* Patients with mCRPC eligble for PSMA RLT
* In-lable use for PSMA RLT
* PSMA PET/CT not older than 8 weeks prior to first cycle of PSMA RLT
* One previous line of antiandrogen receptor pathway treatment and one previous line of taxan based therapy
* Age ≥ 18 years
* Written informed consent
* Sufficient knowledge of the German language or presence of a translator

Exclusion Criteria

* Unwilling to adhere to study procedures
* Missing interdisciplinary tumor conference advise for PSMA RLT
Eligible Sex

MALE

Accepts Healthy Volunteers

No

Sponsors

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University Hospital Augsburg

OTHER

Sponsor Role collaborator

Technical University of Munich

OTHER

Sponsor Role collaborator

German Research Foundation

OTHER

Sponsor Role collaborator

Wuerzburg University Hospital

OTHER

Sponsor Role lead

Responsible Party

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Kerstin Michalski

PD Dr. Kerstin Michalski

Responsibility Role PRINCIPAL_INVESTIGATOR

Principal Investigators

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Kerstin Michalski, MD

Role: PRINCIPAL_INVESTIGATOR

University hospital Wuerzburg - Department of Nuclear Medince

Rainer Claus, Prof.

Role: PRINCIPAL_INVESTIGATOR

University hospital Augsburg - Internal Medicine II

Locations

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University hospital Wuerzburg - Department of Nuclear Medicine

Augsburg, , Germany

Site Status RECRUITING

TUM Klinikum rechts der Isar - Department of Nuclear medicine

München, , Germany

Site Status RECRUITING

University hospital Wuerzburg - Department of Nuclear Medicine

Würzburg, , Germany

Site Status RECRUITING

Countries

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Germany

Central Contacts

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Kerstin Michalski, MD

Role: CONTACT

+4993120135931

Rainer Claus, Prof.

Role: CONTACT

Facility Contacts

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Constantin Lapa, Prof.

Role: primary

0049 821 400-2050

Role: backup

Matthias Eiber, Prof.

Role: primary

+49 89 4140 2971

Role: backup

Kerstin Michalski, MD

Role: primary

+4993120135931

Role: backup

Other Identifiers

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GZ: MI 3238/1-1

Identifier Type: -

Identifier Source: org_study_id

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