evaluation of diagnostic accuracy of [68ga]ga-psma-11 pet/ct in primary staging of intermediate and high risk prostatic cancer in men newly diagnosed

Conditions: Prostate Cancer; Prostatic Neoplasm; Urogenital Neoplasms; Prostatic Disease; Disease Attributes; Neoplasms

Summary: this is a diagnostic accuracy prospective, single-centre, open-label, single group assignment interventional study. its aim is to evaluate the diagnostic accuracy of \[68ga\]ga-psma-11 pet/ct in detection of primary tumour and extra prostatic disease (lymph node, soft tissues spread or bone metastases) in men newly diagnosed with prostate cancer at intermediate and high risk, according to 2019 prostate cancer eau guidelines risk group stratification (see study population paragraph). the investigators are interested in the possible future role of \[68ga\]ga-labelled psma pet/ct as integration to conventional imaging mpmri (with or without ct of the lower abdomen and bone scan) in the detection of primary tumor and extra-prostatic disease (lymph node and soft tissues spread or bone metastases).

this is a diagnostic accuracy prospective, single-centre, open-label, single group assignment interventional study. the primary objective of this study is to evaluate the diagnostic accuracy of \[68ga\]ga-psma-11 pet/ct in detection of primary tumor and extraprostatic disease (lymph node, soft tissues spread or bone metastases) in men newly diagnosed with prostate cancer at intermediate or high-risk. the secondary objective of this study is to compare the diagnostic accuracy of \[68ga\]ga-psma-11 pet/ct to the diagnostic accuracy of conventional imaging mpmri (with or without ct of the lower abdomen and bone scan) in the prostatic bed and extra prostatic disease in men newly diagnosed with prostate cancer at intermediate or high-risk. to evaluate association between \[68ga\]ga-psma-11 pet/ct uptake value (suvmax and suvmean) and aggressiveness of prostate tumor (e.g. psa serum level and gleason score).

Eligibility criteria:
inclusion criteria: i. patients with histo-pathological confirmation of pca with intermediate or high-risk disease according to 2019 prostate cancer eau guidelines risk group stratification (see study population paragraph) ii. patients with conventional imaging mpmri (with or without ct of the lower abdomen and bone scan) performed as baseline in primary pca staging according to 2019 prostate cancer eau guidelines iii. age \>18 years/old iv. ability to provide written informed consent exclusion criteria: i. contra-indication for pet/ct scan: patients not capable of getting pet study due to weight, claustrophobia, or inability to lay still for the duration of the exam ii. impaired renal function iii. impaired liver function: ast or alt \> 2.5 x uln iv. patients unable to understand the purpose of the study v. medical history of allergic reactions or hypersensitivity to \[68ga\] ga-psma-11 as well as to any excipient or component of the experimental medicinal product vi. having partecipated in clinical trial in which the experimental intervention was administered within 30 days (or 5 half-life) from administration the endovenous solution of \[68ga\]ga-psma-11

Keywords: 68gapsma pet/ct prostate cancer primary staging