Standard of Care +/- 177Lu-PSMA-617 In de Novo mHSPC Patients With Poor PSA Response (PEACE6-Poor Responders)

Trial statusRecruiting
Trial phasePhase 3
Trial typeInterventional
Biological sexMale
Age18-80
SponsorUNICANCER

About this trial

PEACE-6 Poor Responders is an international, multicenter, open-label, controlled, randomized, phase III trial to evaluate the efficacy and safety of 177Lu-PSMA-617 when administered on top of the ongoing standard systemic treatment compared to standard systemic treatment alone in patients with de novo metastatic hormone-sensitive prostate cancer (mHSPC) who do not present with a satisfactory response characterized by a serum prostatic specific antigen (PSA) level of ≥ 0.2 ng/mL at 6 to 8 months after systemic treatment initiation for mHSPC (i.e. poor responders) in the absence of evidence of cancer progression (including a rising PSA level).

Eligibility criteria

This trial does not accept healthy volunteers

Qualifiers

Signed a written informed consent form prior to any trial specific procedures.

Aged ≥18 years old

Life expectancy > 6 months as per investigator estimate

Eastern Cooperative Oncology Group (ECOG) performance status ≤ 2

Disqualifiers

Any evidence of cancer progression (including a rising PSA level, clinical progression, or radiological progression)

Prior or concurrent PSMA-based radioligand therapy or other PSMA target treatments

Known hypersensitivity to the components of the study therapy or its analogs

Any condition preventing the use of the standard of care and/or specific experimental treatments tested in the trial

Trial design

Design model

Parallel

Treatments tested in this trial

  • 177Lu-PMSA-617

    Drug

    Once every 6 weeks, 7400 MBq 177Lu-PMSA-617 will be administered for up to a total of 4 cycles.

  • Standard of Care

    Drug

    ADT, abiraterone and each ARSI (Apalutamide, Darolutamide, Enzalutamide) will be administrated according to the standard of care

Treatment groups

500 Participants
are divided into 2 treatment groups
Group A: Arm A (Control arm): Standard of Care (SoC) aloneActive comparator 1 intervention
Group B: Arm B (Experimental arm): 177Lu-PMSA-617 + SoCExperimental treatment 2 interventions

Trial outcomes

Primary outcomes

1

Overall survival (OS)

Overall survival (OS) is defined as the time from the date of randomization to the date of death due to any cause.

Time frame
From randomization to death due to any cause, up to 8.5 years
2

Radiographic progression-free survival (rPFS)

Radiographic progression-free survival (rPFS) is defined as the time from randomization to the date of radiographic progression according to PCWG3 criteria by investigator assessment, or death, whichever occurs first.

Time frame
From randomization to radiographic progression or death, up to 8.5 years

Secondary outcomes

1

Castration-Resistance Prostate Cancer-Free Survival (CRPC-FS)

Castration-Resistance Prostate Cancer-Free Survival (CRPC-FS) is defined as the time from randomization to the onset of castration-resistance or death from any cause, whichever occurs first.

Time frame
From randomization to onset of castration-resistance or death, up to 8.5 years
2

Prostate Cancer-Specific Survival (PCSS)

Prostate Cancer-Specific Survival (PCSS) is defined as the time from the date of randomization to the date of death due to prostate cancer.

Time frame
From the date of randomization to a PCSS event, up to 8.5 years
3

PSA response

PSA response will be assessed by the maximum change of PSA (rise or fall) from baseline over the treatment period. A complete PSA response is defined by an undetectable level of serum PSA.

Time frame
From baseline over the treatment period, up to 8.5 years
4

Skeletal-related event-free survival (SRE-FS)

Skeletal-related event-free survival (SRE-FS) is defined as the time from the randomization date to the date of diagnosis of either a skeletal-related event (SRE) (fracture, or bone pain requiring radiation therapy, or spinal cord compression, or preventive surgery to the bones) or death, whichever occurs first.

Time frame
From randomization to the onset of a SRE-FS event, up to 8.5 years

Other outcomes

Sponsors and contacts

Click on the lead sponsor to view all of their trials.

UNICANCER

Lead sponsor

Novartis

Collaborator