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The Impact of Metastatic Directed Radiotherapy (MDRT) on Oligoprogressive Castration Resistant Prostate Cancer (CRPC)

NCT07038304 · Status: RECRUITING · Phase: PHASE2 · Type: INTERVENTIONAL · Enrollment: 35

Last updated 2025-06-26

No results posted yet for this study

Summary

In patients with metastatic prostate cancer (PCa) who receive androgen deprivation therapy (ADT), the sensitivity to castration will eventually disappear due to the selection of castration-refractory clones. This will lead to the stage of metastatic castration-refractory prostate can-cer (mCRPC), which is incurable and results in a median overall survival of 2-3 years.

Treatment options for patients with mCRPC include several systemic agents, such as andro-gen receptor-targeted agents (ARTA), chemotherapy (docetaxel, cabazitaxel) and bone-targeting agents (radium- 223). Clinical progression and, to a lesser extent, biochemical pro-gression traditionally imply a switch to the next line systemic treatment (NEST). Within patients with mCRPC, there is a subgroup showing oligo-progression, defined as the progression of up to 3 lesions, including both metastatic and/or local relapse. Oligoprogression reflects a heterogeneous treatment response, which, in turn, reflects the heterogeneity of the clonogenic cells that give rise to mCRPC. Retrospective studies suggest that metastasis-directed radiotherapy (MDRT) to these oligoprogressive lesions delayed the need for NEST. Recently, promising results were published on the use of MDRT in the oligopro-gressive mCRPC (omCRPC) setting, with a NEST-free survival (NEST-FS) of 21 months in well selected patients. Currently, in The Netherlands, patients with omCRPC are frequently referred and treated with MDRT, but a clear treatment protocol and inclusion/selection criteria are missing. Moreover, the exact benefit of MDRT in patients with omCRPC remains unclear, as prospective evi-dence for MDRT in omCRPC is lacking.

Conditions

  • Prostate Cancer (Adenocarcinoma)
  • OligoProgressive Metastatic Disease
  • Castration Resistant Metastatic Prostate Cancer
  • Radiotherapy

Interventions

RADIATION

Metastasis directed radiotherapy

According to guidelines, in the case of oligoprogression next line systemic treatment is recommended. This study investigates the potential delay of NEST and rPFS by MDRT.

Sponsors & Collaborators

  • University Medical Center Groningen

    lead OTHER

Study Design

Allocation
NA
Purpose
TREATMENT
Masking
NONE
Model
SINGLE_GROUP

Eligibility

Min Age
18 Years
Sex
MALE
Healthy Volunteers
No

Timeline & Regulatory

Start
2025-01-03
Primary Completion
2028-01-03
Completion
2029-01-03

Countries

  • Netherlands

Study Locations

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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 NCT07038304 on ClinicalTrials.gov