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[18F]Fluorthanatrace - Positron Emission Tomography (FTT-PET) and ctDNA to Predict Response to PARP Inhibitor Therapy in Metastatic Prostate Cancer (mPC)

NCT07723651 · Status: NOT_YET_RECRUITING · Phase: PHASE2 · Type: INTERVENTIONAL · Enrollment: 75

Last updated 2026-07-23

No results posted yet for this study

Summary

This multicenter center, open-label, baseline-controlled diagnostic imaging study designed to assess the use of Fluorthanatrace-Positron Emission tomography (FTT-PET) as a PARP inhibitor (PARPi) therapy predictive imaging biomarker and the use of EnhanceAR-Seq (ctDNA) in predicting response to therapy and to identify genomic alterations associated with resistance. Furthermore, to correlate changes in ctDNA and imaging (FTT-PET and standard of care imaging) to understand the dynamics of tumor response.

Conditions

Interventions

DRUG

1-(4-(2-Fluoroethoxy)phenyl)-8,9-dihiydro-2,7,9a-triazabenzo[cd]azulen-6(7H)-one

\[18F\]fluorthanatrace (FTT) is a positron emitting radiopharmaceutical that is administered as an intravenous (IV) solution via injection at a prescribed dose of 10mCi. A lesser dose may be injected if complete imaging data could be generated.

DEVICE

FTT-PET/CT

A small intravenous (IV) catheter will be placed in the arm vein according to site's standard practice to allow injection of FTT. Approximately sixty minutes following administration of approximately 10 mCi of the radiotracer FTT, patients will undergo standard body PET/CT imaging.

DIAGNOSTIC_TEST

EnhanceAR-Seq

Patients will undergo approximately 30 mL of peripheral blood sample collection to be used for analysis. For each sample, EnhanceAR-Seq will be performed on each of these samples, with somatic genomic alteration calling performed in plasma cell-free DNA with removal of background non-tumor variants using matched plasma-depleted whole blood germline samples.

Sponsors & Collaborators

Principal Investigators

  • Farrokh Dehdashti, MD · Washington University School of Medicine

Study Design

Allocation
NA
Purpose
DIAGNOSTIC
Masking
NONE
Model
SINGLE_GROUP

Eligibility

Min Age
18 Years
Sex
MALE
Healthy Volunteers
No

Timeline & Regulatory

Start
2026-09-01
Primary Completion
2032-03-31
Completion
2032-03-31
FDA Drug
Yes
FDA Device
Yes

Countries

  • United States

Study Locations

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Entities

Diseases
Companies

Read the full study record

This page highlights key information. For complete eligibility criteria, study locations, investigator contacts, and the full protocol, visit the original record on ClinicalTrials.gov.

View NCT07723651 on ClinicalTrials.gov