Radioablation With or Without Androgen DeprIvation Therapy in Metachronous Prostate Cancer OligometaStAsis (RADIOSA)

  • End date
    Apr 1, 2024
  • participants needed
  • sponsor
    European Institute of Oncology
Updated on 29 July 2023


A randomized phase II clinical trial (RADIOSA trial: Radioablation with or without Androgen DeprIvation therapy in metachronous prostate cancer OligometaStAsis).

The aim is to compare time to progression between the two study arms: SBRT only or SBRT and hormonotherapy (ADT). The primary objective is to compare the progression-free survival (PFS) defined as the absence of new metastatic lesions (local, regional or distant) between the two arms. The secondary endpoints include the comparison of overall survival (OS), biochemical progression-free survival (BPFS), ADT-free survival, local control, treatment-induced acute and late toxicity, time to castration-resistant disease and QoL between the two arms; the development of a dedicated biobanking (collection of plasma and serum) for further biological investigation of predictive/diagnostic factors for personalized treatment; the preliminary evaluation of prognostic biomarkers; the correlation between imaging-derived parameters and treatment outcome.

Condition Oligometastatic Prostate Cancer
Treatment SBRT, Androgen Deprivation Therapy (ADT)
Clinical Study IdentifierNCT03940235
SponsorEuropean Institute of Oncology
Last Modified on29 July 2023


Yes No Not Sure

Inclusion Criteria

Histologically proven initial diagnosis of adenocarcinoma of the prostate
Biochemical relapse of PCa following radical local prostate treatment (radical prostatectomy, primary radiotherapy or radical prostatectomy +/- prostate bed adjuvant/salvage radiotherapy) +/- ADT according to the European Association of Urology (EAU) guidelines 2016 [18] or after any salvage therapy if biochemical progression is diagnosed in the context of castration sensitive PCa
Nodal relapse in the pelvis, extra-regional nodal relapse (M1a), bone metastases (M1b) on Ch-PET/CT or WBMRI with a maximum of 3 lesions
Serum testosterone level >50 ng/dl at the time of randomization (castration sensitive PCa)
Eastern Cooperative Oncology Group (ECOG) performance status 0-1
Age ≥18 years
Written informed consent signed

Exclusion Criteria

Serious concomitant comorbidities or contraindication to SBRT and/or ADT
Previous invasive cancer (within 3 years before the prostate cancer diagnosis) apart from non-melanoma skin malignancies
No ability to complete questionnaires about QoL
Presence of mental diseases that cannot ensure valid informed consent
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