Experimental Study to Evaluate the Impact of 18 Fluoro-PSMA (18F-PSMA) PET / CT in the Management of Patients with Prostate Cancer.

Phase 2

Completed

• Conditions: 18F-PSMA; Prostate Cancer
• Interventions: Drug: 18F-PSMA

• Registration Number: NCT04775602
• Lead Sponsor: Istituto Scientifico Romagnolo per lo Studio e la cura dei Tumori

Brief Summary

Single-center, prospective, open-label, not randomized, diagnostic phase II trial in the management of patients with prostate cancer.

Detailed Description

Single-center, prospective, open-label, not randomized, diagnostic phase II trial in the management of patients with prostate cancer. The aim of this study is to evaluate the additional diagnostic role of 18F- PSMA PET /CT (sensitivity) in patients with prostate cancer with biochemical relapse compared to other diagnostic methods routinely used. The primary objective is to evaluate the sensitivity of 18F-PSMA PET/CT defined as the ratio between the number of 18F-PSMA PET/CT positive patients and the number of prostate cancer patients with biochemical relapse and negative standard imaging.Patients enrolled in the study would benefit from a more accurate but above all earlier diagnosis of disease recurrence sites, thus being able to undergo targeted therapies, with a clear impact on the clinical management of the disease.

Study Timeline

• Study First Submitted: 2020-01-21
• Study Start: 2020-07-31
• Study First Submitted QC: 2021-02-25
• Study First Posted: 2021-03-01
• Primary Completion: 2023-04-05
• Study Completion: 2024-07-11
• Status Verified: 2025-01
• Last Update Submitted: 2025-01-08
• Last Update Posted: 2025-01-09

Recruitment & Eligibility

• Status: COMPLETED
• Sex: Male
• Target Recruitment: 550

Inclusion Criteria

1. Patients must have histologically or cytologically confirmed prostate cancer
2. Male, aged >18 years on the day of signing and dating the informed consent form.
3. Previous radical treatment for prostate cancer (radiotherapy or surgery)
4. Negativity of all the other traditional morphological and functional imaging or doubtful imaging of 18F-FMC PET/CT
5. Patients with PSA progression defined as PSA ≥ 0.2 ng/mL and PSA rising defined as 2 subsequent values showing PSA increase at least 1 week apart.
6. Male participants whose partner is of child bearing potential must be willing to ensure that they or their partner use effective contraception during the study and for 3 months thereafter
7. Participant is willing and able to give informed consent for participation in the study.

Exclusion Criteria

1. Hormonotherapy in the last 6 months
2. No radiotherapy in the last 6 months.
3. Participation in another clinical trial with any investigational agents within 30 days prior to prior informed consent date
4. History of allergic reactions attributed to compounds of similar chemical or biologic composition to Study Agent.
5. Medical or psychological conditions that would not permit the subject to sign the informed consent

Study & Design

• Study Type: INTERVENTIONAL
• Study Design: SINGLE_GROUP

Arm && Interventions

Group	Intervention	Description
18F-PSMA PET/CT	18F-PSMA	Patients with evidence of biochemical recurrence of prostate cancer radically treated, with negative results to traditional diagnostic methods or doubtful imaging of 18F- Fluoro Methyl Choline (18F-FMC) PET/CT will perform a 18F-PSMA PET/CT as a tool for searching and location of recurrence.

Primary Outcome Measures

Name	Time	Method
Diagnostic role of 18F- PSMA PET /CT (sensitivity)	Up to 30 months	Sensitivity of 18F-PSMA PET/CT will be calculated as the ratio between the number of 18F- PSMA PET/CT positive patients and number of patients with radically treated prostate cancer with biochemical relapse and negativity of traditional morphological imaging.

Secondary Outcome Measures

Name	Time	Method
predictive role of 18F-PSMA PET/CT on disease status according to standard imaging and PSA evaluation.	Up to 30 months	To evaluate the predictive role of 18F-PSMA PET/CT on disease status, for patients that will start an anticancer treatment. It will be performed the receiver operating characteristic (ROC) curves generated by plotting sensitivity versus 1-specificity The best cut-off value for distinguishing between positive and negative 18F- PSMA PET/CT findings will be determined using Youden's index.
Sensitivity for different lesion sites	Up to 30 months	Sensitivity of 18F-PSMA PET/CT will be stratified respect to different sites of lesion.
evaluation of the concordance between 18F-PSMA PET/CT and other methods	Up to 30 months	To evaluate the concordance between 18F-PSMA PET/CT and PET/CT or the others standard methods, for patients without any treatment, it will be performed by Cohen's kappa coefficient
Sensitivity for different PSA values (ranges)	Up to 30 months	Sensitivity of 18F-PSMA PET/CT will be stratified respect to different ranges of Prostate-Specific Antigen (PSA) values.
18F-PSMA Safety: treated patients undergoing grade 1 to 4 adverse event	Up to 30 months	Number and percentage of treated patients undergoing grade 1 to 4 adverse events will be tabulated according to CTCAE version 5.0.

Trial Locations

Locations (1)

Irst Irccs; 🇮🇹 Meldola, FC, Italy