A Study of Real-world Effectiveness of 177Lu-PSMA-617 With and Without Concurrent Androgen Receptor Pathway Inhibitors in Metastatic Castration Resistant Prostate Cancer Patients

November 4, 2026 updated by: Novartis Pharmaceuticals

Real-world Effectiveness of 177Lu-PSMA-617 With and Without Concurrent Androgen Receptor Pathway Inhibitors in Patients With Metastatic Castration Resistant Prostate Cancer

This study aims to assess real-world clinical outcomes among adult metastatic castration-resistant prostate cancer (mCRPC) patients previously treated with and progressed on an androgen receptor pathway inhibitor (ARPI) who received 177Lu-PSMA-617 as a monotherapy or with concurrent ARPI. The study will use secondary data taken from a United States oncology database.

Study Overview

Status

Not yet recruiting

Conditions

Study Type

Observational

Enrollment (Estimated)

2045

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Contact

Study Contact Backup

  • Name: Novartis Pharmaceuticals

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Ages Eligible for Study

18 years and older (Adult, Older Adult)

Accepts Healthy Volunteers

No

Genders Eligible for Study

Male

Sampling Method

Non-Probability Sample

Study Population

Adult male patients with mCRPC treated with 177Lu-PSMA-617 with or without concurrent ARPI on/after March 23, 2022 who received prior and progressed on an ARPI therapy in the metastatic setting.

Description

Inclusion criteria:

  • Has an International Classification of Diseases (ICD) diagnosis of prostate cancer (ICD-9 185x; ICD-10 C61x)

  • At least two documented clinic visits on different days in the database network occurring on or after January 1, 2011.

  • Has evidence of prostate cancer with an initial or metastatic diagnosis date, as identified by a machine learning (ML) model from unstructured documents.

  • Diagnosis of mCRPC

  • Aged ≥18 years at mCRPC diagnosis.

  • Histology of Adenocarcinoma or prostate cancer, not otherwise specified (NOS).

  • Evidence of pre-index exposure to an ARPI (abiraterone acetate, enzalutamide, darolutamide, or apalutamide) in the metastatic setting

  • Evidence of ARPI progression on the ARPI line of treatment (LOT) immediately preceding 177Lu-PSMA-617 initiation, defined as

    • evidence of a progression date (per the database's real-world progression-free survival (rwPFS) variables), during or after the preceding ARPI LOT
    • a castration-resistant prostate cancer (CRPC) date occurring during or after the preceding ARPI LOT

  • Evidence of initiating a 177Lu-PSMA-617-containing LOT with or without a second-generation ARPI (abiraterone acetate, enzalutamide, darolutamide, or apalutamide) in mCRPC setting between 23 March 2022 and 31 October 2025, with concurrent therapies limited to androgen deprivation therapy (ADT) and/or 1st-generation antiandrogens only, and no other concurrent therapies permitted.

  • At least 6 months of potential minimum follow-up from the first 177Lu-PSMA-617-containing LOT

  • Patients may not receive a clinical study drug (CSD) any time prior to 177Lu-PSMA-617-containing LOT.

Exclusion criteria:

Applied to ARPI-experienced mCRPC patient cohort:

Individuals will be excluded if they meet any of the following criteria:

  • Evidence of unknown histology.
  • Patients enrolled in clinical trials at the time of 177Lu-PSMA-617 initiation.

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

  • Observational Models: COHORT
  • Time Perspectives: RETROSPECTIVE

Cohorts and Interventions

Group / Cohort
177Lu-PSMA-617 Monotherapy

mCRPC patients receiving 177Lu-PSMA-617 without concurrent ARPI. ADT and/or 1st-generation antiandrogens are allowed in the line. No other therapies are permitted during the line.
177Lu-PSMA-617 + ARPI Combination

mCRPC patients receiving 177Lu-PSMA-617 with concurrent ARPI. ADT and/or 1st-generation antiandrogens are allowed in the line. No other therapies are permitted in the line.

What is the study measuring?

Primary Outcome Measures

Outcome Measure
Measure Description
Time Frame
Real-world Overall Survival (rwOS)
Time Frame: Up to approximately 4 years

rwOS defined as the time from the index date (177Lu-PSMA-617 treatment initiation) to date of death.
Up to approximately 4 years

Secondary Outcome Measures

Outcome Measure
Measure Description
Time Frame
Baseline Demographics
Time Frame: Baseline
Baseline
Real-world Time to Treatment Discontinuation (rwTTD)
Time Frame: Up to approximately 4 years

rwTTD defined as the time from 177Lu-PSMA-617 index therapy start to 177Lu-PSMA-617 index therapy end (discontinuation, death, or ≥120-day gap).
Up to approximately 4 years
Real-world Progression-free Survival (rwPFS)
Time Frame: Up to approximately 4 years

rwPFS defined as the time from the start date of 177Lu-PSMA-617 to the date of first progression occurring more than 14 days after the LOT start date, or date of death if no progression event is observed.
Up to approximately 4 years
Number of Patients by Clinical Characteristics
Time Frame: Baseline

Clinical characteristics such as Eastern Cooperative Oncology Group (ECOG) performance status category (0-1, 2+), prostate specific antigen (PSA) level, Gleason score category (<8, ≥8), laboratory values, and prior ARPI LOTs.
Baseline

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Sponsor

Novartis Pharmaceuticals

Investigators

  • Study Director: Novartis Pharmaceuticals, Novartis Pharmaceuticals

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start (Estimated)

November 5, 2026

Primary Completion (Estimated)

November 25, 2026

Study Completion (Estimated)

November 25, 2026

Study Registration Dates

First Submitted

November 4, 2026

First Submitted That Met QC Criteria

November 4, 2026

First Posted (Actual)

November 10, 2026

Study Record Updates

Last Update Posted (Actual)

November 10, 2026

Last Update Submitted That Met QC Criteria

November 4, 2026

Last Verified

November 1, 2026

More Information

Terms related to this study

Keywords

Additional Relevant MeSH Terms

Other Study ID Numbers

  • CJSB462B12001

Plan for Individual participant data (IPD)

Plan to Share Individual Participant Data (IPD)?

NO

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

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