PET/MRI to Stage Prostate Cancer Patients

San Donato Group (GSD)

Status and phase

Enrolling

Phase 2

Conditions

Prostate Cancer

Treatments

Drug: 68Ga-PSMA

Drug: 68Ga-RM2

Study type

Interventional

Funder types

Other

Identifiers

NCT06484361

PETMR-Staging-PCa1

Details and patient eligibility

About

The main goal of this phase II clinical trial is to define a novel approach of staging prostate cancer (PCa) patients by using a fully integrated positron emission tomography/ magnetic resonance imaging (PET/MRI) system with 68Ga-prostate specifica membrane antigen (PSMA) and 68Ga-RM2 (bombesin antagonist).

50 patients with biopsy proven PCa will be studied by PET/MRI with 68Ga-PSMA and with 68Ga-RM2 and then will undergo prostatectomy and pelvic lymphadenectomy.

Full description

This is a prospective monocentric open study (Phase II study). The study will include 50 consecutive PCa patients who will be recruited in the first 36 months of the study. All clinical and pathological variables available at the time of PET/MRI will be recorded for each patient and all patients will take a blood sample before the first PET/MRI study. All patients will undergo 68Ga-PSMA and 68Ga-RM2 PET/MRI studies at San Raffaele Hospital in two different days (> 48 hours between the two studies) and within one month from each other.

Then, patients will undergo surgical intervention (prostatectomy and pelvic/retroperitoneal lymphadenectomy) and the surgically removed prostate will be fixated and processed. Ex-vivo 3T-MRI study will be performed on the processed specimen (prostate gland) and afterwards, the prostate will be examined by a dedicated pathologist. Spatial coregistration of in vivo, ex-vivo and histopathological images will be performed so that the annotation (dominant tumor lesion) made by the pathologist will be translated onto in vivo PET/MR images and semi-quantitative and radiomic features will be extracted from PET and mp-MRI images

Enrollment

50 estimated patients

Sex

Male

Ages

18+ years old

Volunteers

No Healthy Volunteers

Inclusion criteria

Age ≥ 18 years-old
Biopsy proven high-grade PCa referred to prostatectomy and pelvic/retroperitoneal lymphadenectomy.
Willing to provide a signed informed consent

Exclusion criteria

Age < 18 years-old
Inability to complete the needed imaging examinations (i.e. severe claustrophobia)
Any additional medical condition that may significantly interfere with study compliance
All the contraindications for MRI study (i.e. pacemaker)
Evidence of metastatic disease on conventional imaging contraindicating the surgical procedure