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

Status

Indicates the current recruitment status or the expanded access status.
Not yet recruiting

Conditions

Conditions

The disease, disorder, syndrome, illness, or injury that is being studied. On ClinicalTrials.gov, conditions may also include other health-related issues, such as lifespan, quality of life, and health risks.

Study Type

Study Type

Describes the nature of a clinical study. Study types include interventional studies (also called clinical trials), observational studies (including patient registries), and expanded access.
Observational

Enrollment (Estimated)

Enrollment

The number of participants in a clinical study. The "anticipated" enrollment is the target number of participants that the researchers need for the study.
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

The name and contact information for the person who can answer enrollment questions for a clinical study. Each location where the study is being conducted may also have a specific contact, who may be better able to answer those questions.

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

Eligibility Criteria

The key requirements that people who want to participate in a clinical study must meet or the characteristics they must have. Eligibility criteria consist of both inclusion criteria (which are required for a person to participate in the study) and exclusion criteria (which prevent a person from participating). Types of eligibility criteria include whether a study accepts healthy volunteers, has age or age group requirements, or is limited by sex.

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

Group / Cohort

A group or subgroup of participants in an observational study that is assessed for biomedical or health outcomes.
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

Primary Outcome Measures

In a clinical study's protocol, the planned outcome measure that is the most important for evaluating the effect of an intervention/treatment. Most clinical studies have one primary outcome measure, but some have more than one.
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

Secondary Outcome Measures

In a clinical study's protocol, a planned outcome measure that is not as important as the primary outcome measure for evaluating the effect of an intervention but is still of interest. Most clinical studies have more than one secondary outcome measure.
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

Sponsor

The organization or person who initiates the study and who has authority and control over the study.
Novartis Pharmaceuticals

Investigators

Investigators

A researcher involved in a clinical study. Related terms include site principal investigator, site sub-investigator, study chair, study director, and study principal investigator.
  • 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)

Study Start

The actual date on which the first participant was enrolled in a clinical study. The "anticipated" study start date is the date that the researchers think will be the study start date.
November 5, 2026

Primary Completion (Estimated)

Primary Completion

The date on which the last participant in a clinical study was examined or received an intervention to collect final data for the primary outcome measure. Whether the clinical study ended according to the protocol or was terminated does not affect this date. For clinical studies with more than one primary outcome measure with different completion dates, this term refers to the date on which data collection is completed for all the primary outcome measures. The "anticipated" primary completion date is the date that the researchers think will be the primary completion date for the study.
November 25, 2026

Study Completion (Estimated)

Study Completion

The date on which the last participant in a clinical study was examined or received an intervention/treatment to collect final data for the primary outcome measures, secondary outcome measures, and adverse events (that is, the last participant's last visit). The "anticipated" study completion date is the date that the researchers think will be the study completion date.
November 25, 2026

Study Registration Dates

First Submitted

First Submitted

The date on which the study sponsor or investigator first submitted a study record to ClinicalTrials.gov. There is typically a delay of a few days between the first submitted date and the record's availability on ClinicalTrials.gov (the first posted date).
November 4, 2026

First Submitted That Met QC Criteria

First Submitted That Met QC Criteria

The date on which the study sponsor or investigator first submits a study record that is consistent with National Library of Medicine (NLM) quality control (QC) review criteria. The sponsor or investigator may need to revise and submit a study record one or more times before NLM's QC review criteria are met. It is the responsibility of the sponsor or investigator to ensure that the study record is consistent with the NLM QC review criteria.
November 4, 2026

First Posted (Actual)

First Posted

The date on which the study record was first available on ClinicalTrials.gov after National Library of Medicine (NLM) quality control (QC) review has concluded. There is typically a delay of a few days between the date the study sponsor or investigator submitted the study record and the first posted date.
November 10, 2026

Study Record Updates

Last Update Posted (Actual)

Last Update Posted

The most recent date on which changes to a study record were made available on ClinicalTrials.gov. There may be a delay between when the changes were submitted to ClinicalTrials.gov by the study's sponsor or investigator (the last update submitted date) and the last update posted date.
November 10, 2026

Last Update Submitted That Met QC Criteria

Last Update Submitted That Met QC Criteria

The most recent date on which the study sponsor or investigator submitted changes to a study record that are consistent with National Library of Medicine (NLM) quality control (QC) review criteria. It is the responsibility of the sponsor or investigator to ensure that the study record is consistent with the NLM QC review criteria.
November 4, 2026

Last Verified

Last Verified

The most recent date on which the study sponsor or investigator confirmed the information about a clinical study on ClinicalTrials.gov as accurate and current. If a study with a recruitment status of recruiting; not yet recruiting; or active, not recruiting has not been confirmed within the past 2 years, the study's recruitment status is shown as unknown.
November 1, 2026

More Information

Terms related to this study

Keywords

Additional Relevant MeSH Terms

Other Study ID Numbers

Other Study ID Numbers

Identifiers or ID numbers other than the NCT number that are assigned to a clinical study by the study's sponsor, funders, or others. These numbers may include unique identifiers from other trial registries and National Institutes of Health grant 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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