Study of 177Lu-PSMA-617 In Metastatic Castrate-Resistant Prostate Cancer

Official Title

VISION: An International, Prospective, Open Label, Multicentre, Randomized Phase 3 Study of 177Lu-PSMA-617 in the Treatment of Patients With Progressive PSMA-positive Metastatic Castration-resistant Prostate Cancer (mCRPC)

Summary:

The primary objective of this study is to compare overall survival (OS) in patients with progressive PSMA-positive mCRPC who receive 177Lu-PSMA-617 in addition to best supportive/best standard of care versus patients treated with best supportive/best standard of care alone. Key secondary objectives are an arm-to-arm comparison of the following: - Radiographic progression-free survival (rPFS) - Response Evaluation Criteria in Solid Tumours (RECIST) response - Time to a first symptomatic skeletal event (SSE) Additional Secondary Objectives: - Safety and tolerability of 177Lu-PSMA-617 - Health-related quality of life (HRQoL; EQ-5D-5L, FACT-P and Brief Pain Inventory - Short Form (BPI-SF)) - Health economics - Progression-free survival (PFS) (radiographic, clinical, or prostate-specific antigen [PSA] progression-free survival) - Biochemical response as measured by PSA. Alkaline phosphatase [ALP] levels and lactate dehydrogenase [LDH] levels will also be measured.

Trial Description

Primary Outcome:

  • Overall Survival
Patients with PSMA positive scans will be randomized in a 2:1 ratio to receive either 177Lu-PSMA-617 plus best supportive/best standard of care or to receive best supportive/best standard of care only. Best supportive/best standard of care will be determined by the treating physician/investigator but will exclude investigational agents, cytotoxic chemotherapy, other systemic radioisotopes, and hemi-body radiation therapy. Novel androgen axis drugs [NAADs] (such as abiraterone or enzalutamide) are allowed. The study is open-label and patients will be monitored throughout the 6 to 10-month treatment period for survival, disease progression, and adverse events. A long-term follow-up period will include the collection of survival and treatment updates, adverse events assessment, as well as blood for hematology and chemistry testing. During follow-up, patients will be contacted every 3 months (±1 month) via phone, email, or letter for 24 months or until the the overall censoring rate for survival reduces to a level identified in the SAP. An End of Treatment visit should occur once a patient is to enter the long term follow up. This visit should occur approximately 30 days from the last dose of 177Lu-PSMA-617 or best supportive/best standard of care, but before the initiation of subsequent anti-cancer treatment, outside of what is allowed on study. The planned enrollment for this study is 750 patients.

View this trial on ClinicalTrials.gov

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Resources

Canadian Cancer Society

These resources are provided in partnership with the Canadian Cancer Society