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Phase 2 Study of Neoadjuvant PEMbrolizumab Before Radical PROstatectomy in High-risk Prostate Cancer Patients

NCT04565496 · Status: WITHDRAWN · Phase: PHASE2 · Type: INTERVENTIONAL

Last updated 2026-05-15

No results posted yet for this study

Summary

This is a phase 2, open-label, non-randomized, single-arm study in patients with high-risk PCa diagnosed with prostate biopsy and undergoing RP and ePLND. Pembrolizumab will be administered at the dose of 200 mg intravenously, every 3 weeks, for a total of 3 cycles prior to RP and ePLND. Local, nodal and systemic staging with prostate mpMRI, abdominal and chest CT, PSMA-PET/CT and bone scans will be performed before the administration of pembrolizumab. Surgery will be planned at the time of study inclusion to be done within 3 weeks of the last dose of study drug (screening: 3 weeks; cycle 1 followed by 3 weeks; cycle 2 followed by 3 weeks; cycle 3 followed by 3 weeks to surgery = 12 weeks from inclusion to surgery). Patients will receive 3 cycles of pembrolizumab at 200mg 3 weekly prior to RP and ePLND. Surgery will take place within 3 weeks after the last dose of the study drug. After surgery, patients with the evidence of aggressive disease features (namely, pathologic grade group 4-5; pT3b-4 and/or LNI) will be managed according to local guidelines (adjuvant radiotherapy with or without ADT will be allowed). Further Anti PD-1 therapy will not be given post-operatively. PD-L1 status will be retrospectively assessed on both tumour cells and immune cells in tissue specimens from for all patients enrolled in the study.

Conditions

Interventions

DRUG

Pembrolizumab

Pembrolizumab will be administered at the dose of 200 mg intravenously, every 3 weeks, for a total of 3 cycles prior to RP and ePLND

Sponsors & Collaborators

  • IRCCS San Raffaele

    lead OTHER

Study Design

Allocation
NA
Purpose
TREATMENT
Masking
NONE
Model
SINGLE_GROUP

Eligibility

Min Age
18 Years
Max Age
90 Years
Sex
MALE
Healthy Volunteers
No

Timeline & Regulatory

Start
2023-04-10
Primary Completion
2025-01-01
Completion
2025-01-01

Countries

  • Italy

Study Locations

More Related Trials

Entities

Drugs
Diseases

Read the full study record

This page highlights key information. For complete eligibility criteria, study locations, investigator contacts, and the full protocol, visit the original record on ClinicalTrials.gov.

View NCT04565496 on ClinicalTrials.gov