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NCT05647564NARECRUITING

PET/CT Characterization of Treatment Resistance

PET/CT Characterization of Treatment Resistance of AR-targeted Therapies in mCRPC

Sponsor: University of Wisconsin, Madison

No open prediction endpoints

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Key Facts

Study type
INTERVENTIONAL
Conditions
Prostate Cancer
Interventions
F-fluorodeoxyglucose positron emission tomography (FDG PET), prostate-specific membrane antigen positron emission tomography (PSMA PET)
Enrollment
25 participants
Primary completion
Sep 2026
Study completion
Sep 2026
First posted
Dec 2022
Last updated
Feb 2026

Primary Endpoints (CT.gov)

Characterize intrinsic resistance based on FDG and PSMA PET through change in individual lesion update levels.

Time frame: Baseline to 12 weeks

Characterize change in intrinsic resistance based on FDG and PSMA PET.

Time frame: Baseline to 12 weeks

Characterize change in intrinsic resistance based on FDG and PSMA PET.

Time frame: 12 weeks to 36 weeks

Characterize change in intrinsic resistance based on FDG and PSMA PET.

Time frame: Baseline to 36 weeks

Secondary Endpoints

Correlate amount of intrinsic resistance on FDG and PSMA PET to predict time to PSA progression

Correlate amount of intrinsic resistance on FDG and PSMA PET to predict time to radiographic progression

Correlate amount of intrinsic resistance on FDG and PSMA PET to predict time duration on treatment

Eligibility Criteria

Inclusion Criteria: * Histologically proven adenocarcinoma of the prostate. * At least 1 radiographic metastases as seen on conventional CT imaging or bone scan * Progressive prostate cancer as evident by at least two separate increase in PSA over nadir, and absolute PSA value at least 2 ng/ml (INTRINSIC RESISTANCE COHORT, ARSI patients ONLY) * Patients must be candidate for a second-generation androgen receptor (AR) inhibitor (e.g. enzalutamide, abiraterone, darolutamide, apalutamide), or Lu177-PSMA radioligand therapy (INTRINSIC RESISTANCE COHORT ONLY) * Men of age \>18 years. * Patients must be able to comply with all study procedures, including having both the ability and willingness to lie flat for ≥ 30 minutes during imaging * Patients must be informed of the exploratory nature of the study and its potential risks, and must sign IRB-approved consent form indicating such understanding. * Life-expectancy at least 12 months * Patients currently receiving a second-generation androge

Read full criteria on CT.gov →

✦ Analyst Commentary

Expert commentary on why this trial matters and what to watch for.

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Source

Open on ClinicalTrials.gov