- ICH GCP
- Registro degli studi clinici negli Stati Uniti
- Sperimentazione clinica NCT07916311
POSLUMA PET Imaging for PI-RADS 3 Prostate Lesions (PRISM)
Targeting the Gray Zone: Early Detection of Clinically Significant Prostate Cancer in PI-RADS 3 Patients Using PET Imaging With an 18F-Labeled Radiohybrid PSMA-Targeted Imaging Agent
This prospective, multicenter diagnostic accuracy study will evaluate whether POSLUMA (flotufolastat F 18) PET/MRI or PET/CT can detect clinically significant prostate cancer, defined as Gleason score 7 or higher, in adult men with PI-RADS 3 lesions on recent multiparametric MRI and a clinical indication for prostate biopsy. Participants will undergo a research-only POSLUMA PET scan before targeted and systematic prostate biopsy. PET imaging metrics and clinical variables will be compared with histopathology. Research PET results will not be used to guide clinical management or replace standard diagnostic procedures.
Panoramica dello studio
Stato
Condizioni
Intervento / Trattamento
Descrizione dettagliata
Men aged 18 years or older with a PI-RADS 3 lesion identified on multiparametric MRI within the prior 4 weeks and a clinical indication for prostate biopsy will be consecutively enrolled. After written informed consent, participants will undergo POSLUMA PET/MRI or PET/CT. POSLUMA will be administered as an intravenous bolus at 296 MBq (8 mCi), and imaging will begin approximately 60 minutes after administration. PET-derived metrics, including SUVmax, PRIMARY score, lesion-to-background ratio, and lesion volume, will be recorded. MRI features and clinical parameters, including PSA, PSA density, and free-to-total PSA ratio, may also be collected.
The reference standard will be histopathology from targeted biopsy of the PI-RADS 3 lesion together with systematic prostate biopsy. Diagnostic performance will be evaluated using lesion-level area under the receiver operating characteristic curve, sensitivity, specificity, positive predictive value, and negative predictive value. The study will also estimate biopsy avoidance and missed clinically significant prostate cancer rates and explore multivariable models combining PET, MRI, and clinical variables. Participants should not expect direct clinical benefit, and the research PET result will not alter biopsy decisions or other standard care.
Tipo di studio
Iscrizione (Stimato)
Fase
- Non applicabile
Contatti e Sedi
Contatto studio
- Nome: Xiaowei Hong
- Numero di telefono: 702-433-6944
- Email: adeline.hong@simonmed.com
Luoghi di studio
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Arizona
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Avondale, Arizona, Stati Uniti, 85392
- SimonMed Imaging - Akos
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Contatto:
- Xiaowei Hong
- Numero di telefono: 86+15821075453
- Email: adeline.hong@simonmed.com
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Chandler, Arizona, Stati Uniti, 85224
- SimonMed Imaging - Chandler South
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Contatto:
- Xiaowei Hong
- Numero di telefono: 86+15821075453
- Email: adeline.hong@simonmed.com
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Mesa, Arizona, Stati Uniti, 85206
- SimonMed Imaging - Greenfield
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Contatto:
- Xiaowei Hong
- Numero di telefono: 86+15821075453
- Email: adeline.hong@simonmed.com
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Phoenix, Arizona, Stati Uniti, 85004
- SimonMed Imaging - Central Phoenix
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Contatto:
- Xiaowei Hong
- Numero di telefono: 86+15821075453
- Email: adeline.hong@simonmed.com
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Scottsdale, Arizona, Stati Uniti, 85254
- SimonMed Imaging - Kierland
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Contatto:
- Xiaowei Hong
- Numero di telefono: 86+15821075453
- Email: adeline.hong@simonmed.com
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Surprise, Arizona, Stati Uniti, 85374
- SimonMed Imaging - Surprise Stadium Village
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Contatto:
- Xiaowei Hong
- Numero di telefono: 86+15821075453
- Email: adeline.hong@simonmed.com
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-
Criteri di partecipazione
Criteri di ammissibilità
Età idonea allo studio
Accetta volontari sani
Sessi ammissibili allo studio
Descrizione
Inclusion Criteria:
- Male, age 18 years or older
- PI-RADS 3 lesion diagnosed by multiparametric MRI within the past 4 weeks
- Clinical indication for prostate biopsy
- Undergoing targeted biopsy and systematic biopsy as part of the routine clinical pathway
- Able to provide written informed consent
Exclusion Criteria:
- Prior diagnosis or treatment of prostate cancer
- PI-RADS 4 or 5 lesion
- Negative MRI, defined as PI-RADS 1 or 2
- Contraindication to PSMA PET or prostate biopsy
- Contraindication to both MRI and CT
- Any medical condition that may interfere with study procedures
Piano di studio
Come è strutturato lo studio?
Dettagli di progettazione
- Scopo principale: Diagnostico
- Assegnazione: N / A
- Modello interventistico: Assegnazione di gruppo singolo
- Mascheramento: Nessuno (etichetta aperta)
Armi e interventi
Gruppo di partecipanti / Arm |
Intervento / Trattamento |
|---|---|
|
Sperimentale: POSLUMA PET Diagnostic Imaging
Participants undergo one research-only POSLUMA PET/MRI or PET/CT before targeted and systematic prostate biopsy. |
Participants undergo research-only PSMA PET/MRI or PET/CT using POSLUMA (flotufolastat F 18) before clinically indicated prostate biopsy. POSLUMA is administered intravenously at 296 MBq (8 mCi), with PET imaging beginning approximately 60 minutes after administration. PET imaging findings are compared with histopathology from targeted and systematic prostate biopsy.
Altri nomi:
|
Cosa sta misurando lo studio?
Misure di risultato primarie
Misura del risultato |
Misura Descrizione |
Lasso di tempo |
|---|---|---|
|
Diagnostic accuracy of POSLUMA PET for clinically significant prostate cancer
Lasso di tempo: From research PET imaging through histopathology review, up to approximately 6 weeks after the PET scan
|
Lesion-level area under the receiver operating characteristic curve for POSLUMA PET metrics, including SUVmax and PRIMARY score, using biopsy histopathology and clinically significant prostate cancer defined as Gleason score 7 or higher as the reference standard. |
From research PET imaging through histopathology review, up to approximately 6 weeks after the PET scan
|
Misure di risultato secondarie
Misura del risultato |
Misura Descrizione |
Lasso di tempo |
|---|---|---|
|
Sensitivity of POSLUMA PET
Lasso di tempo: From research PET imaging through histopathology review, up to approximately 6 weeks after the PET scan
|
Lesion-level sensitivity for detecting clinically significant prostate cancer using biopsy histopathology as the reference standard. |
From research PET imaging through histopathology review, up to approximately 6 weeks after the PET scan
|
|
Specificity of POSLUMA PET
Lasso di tempo: From research PET imaging through histopathology review, up to approximately 6 weeks after the PET scan
|
Lesion-level specificity for detecting clinically significant prostate cancer using biopsy histopathology as the reference standard. |
From research PET imaging through histopathology review, up to approximately 6 weeks after the PET scan
|
|
Positive predictive value of POSLUMA PET
Lasso di tempo: From research PET imaging through histopathology review, up to approximately 6 weeks after the PET scan
|
Positive predictive value for detecting clinically significant prostate cancer using biopsy histopathology as the reference standard. |
From research PET imaging through histopathology review, up to approximately 6 weeks after the PET scan
|
|
Negative predictive value of POSLUMA PET
Lasso di tempo: From research PET imaging through histopathology review, up to approximately 6 weeks after the PET scan
|
Negative predictive value for detecting clinically significant prostate cancer using biopsy histopathology as the reference standard. |
From research PET imaging through histopathology review, up to approximately 6 weeks after the PET scan
|
|
Potential biopsy avoidance rate
Lasso di tempo: At completion of biopsy histopathology review, up to approximately 6 weeks after the PET scan
|
Percentage of participants with low PSMA uptake who would be classified as potentially able to avoid biopsy under the study's exploratory imaging criteria. |
At completion of biopsy histopathology review, up to approximately 6 weeks after the PET scan
|
|
Missed clinically significant prostate cancer rate
Lasso di tempo: At completion of biopsy histopathology review, up to approximately 6 weeks after the PET scan
|
Proportion of clinically significant prostate cancer cases associated with low PSMA uptake under the study's exploratory imaging criteria. |
At completion of biopsy histopathology review, up to approximately 6 weeks after the PET scan
|
|
Performance of a multivariable diagnostic model
Lasso di tempo: After completion of imaging, biopsy, and histopathology data collection, through December 2028
|
Model performance when combining PSMA PET metrics with clinical and imaging variables such as PSA, PSA density, free-to-total PSA ratio, ADC, lesion volume, and other protocol-specified variables. |
After completion of imaging, biopsy, and histopathology data collection, through December 2028
|
Collaboratori e investigatori
Sponsor
Collaboratori
Investigatori
- Investigatore principale: Howard John Simon, MD, SimonMed Imaging
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Inizio studio (Stimato)
Completamento primario (Stimato)
Completamento dello studio (Stimato)
Date di iscrizione allo studio
Primo inviato
Primo inviato che soddisfa i criteri di controllo qualità
Primo Inserito (Effettivo)
Aggiornamenti dei record di studio
Ultimo aggiornamento pubblicato (Effettivo)
Ultimo aggiornamento inviato che soddisfa i criteri QC
Ultimo verificato
Maggiori informazioni
Termini relativi a questo studio
Parole chiave
Termini MeSH pertinenti aggiuntivi
- Malattie urogenitali
- Malattie genitali
- Neoplasie genitali, maschio
- Neoplasie urogenitali
- Neoplasie per sede
- Neoplasie
- Malattie genitali, maschio
- Malattie della prostata
- Malattie urogenitali maschili
- Neoplasie prostatiche
- Tecniche e procedure diagnostiche
- Diagnosi
- Tomografia
- Imaging diagnostico
- Interpretazione dell'immagine, assistita da computer
- Miglioramento dell'immagine
- Fotografia
- Tomografia, emissione
- Imaging radionuclide
- Tecniche diagnostiche, radioisotopo
- Tomografia a emissione di positroni
Altri numeri di identificazione dello studio
- TUNIRB000379
Informazioni su farmaci e dispositivi, documenti di studio
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