Ga-68-PSMA-11 in High-risk Prostate Cancer

Summary

This will be an open-label, single-arm, rater-blinded, multicenter, diagnostic phase 1/2 study to assess safety and diagnostic performance of Ga-68-PSMA-11 positron emission tomography / computer tomography (PET/CT) imaging to detect tumour tissue in patients with newly diagnosed PCA and a high risk for metastasis. As standard of truth, comprehensive histopathology covering prostate and the tributary pelvic lymph node system, will be used. Therefore, only patients scheduled for RP with EPLND (as part of their standard of care) will be eligible.

Patients will be recruited at up to 11 uro-oncological sites in Germany, Austria, and Switzerland, with access to a radiopharmaceutical laboratory, experienced to prepare 68Ga-labelled compounds, and high-quality PET/CT imaging. Upon histological confirmation of PCA, pre-operative staging will be performed according to European Association of Urology (EAU) guideline \[Mottet et al. 2015\] (to include pelvic MRI or CT and a 99mTc-bone scan), to establish the indication for RP with EPLND. If the indication is confirmed, patients will be invited to participate in the present study. After consenting, review of inclusion and exclusion criteria, as well as screening investigations will be performed by the uro-oncologist (day 0). Thereafter, patients are referred to the collaborating nuclear medicine department for tracer injection, imaging, and post-dose safety evaluations (day 1). Subsequent investigations (day 2 and at end of study) will be made by the uro-oncologist or experienced nuclear medicine physician. Study participation ends on day 7. Routine surgery (RP with EPLND) will be performed after end of study, but no later than 42 days after study inclusion. This sequence allows adequate characterisation of tracer safety, while at the same avoiding unnecessary delay of, or confounding safety signals from therapy.

In total, 150 evaluable patients will be included to receive a single 68Ga dose of 150 MBq (± 50 MBq), administered as i.v. infusion. Due to an assumed dropout rate of 15%, up to 173 patients will be included in study.

Conditions

• High-risk Prostate Cancer
• Prostate Cancer
• Prostate Cancer Metastatic
• Lymphnode Metastasis

Interventions

DRUG

Ga-68-PSMA-11

Single administration of 150 MBq (± 50 MBq), corresponding to a mass dose of ≤ 6 µg. A 2nd administration of 150 MBq (± 50 MBq), corresponding to a mass dose of ≤ 6 µg is possible in the unlikely case of a negative histological result (i.e. no prostate-specific membrane antigen (PSMA) expression in dissected lymph nodes) to verify if PSMA PET-positive tissue as seen on day 1 has not been removed during RP with EPLND.

Sponsors & Collaborators

• ABX CRO

  collaborator OTHER

• Friedrich-Alexander-Universität Erlangen-Nürnberg

  collaborator OTHER

• University Hospital Freiburg

  collaborator OTHER

• German Cancer Research Center

  lead OTHER

Principal Investigators

• Frederik Giesel, Prof. Dr. · University Hospital Heidelberg

Study Design

Allocation

NA

Purpose

DIAGNOSTIC

Masking

NONE

Model

SINGLE_GROUP

Eligibility

Min Age

18 Years

Sex

MALE

Healthy Volunteers

No

Timeline & Regulatory

Start

2017-10-09

Primary Completion

2020-07-06

Completion

2020-07-06

Countries

• Austria
• Germany

Study Locations