Efficacy of Repeat Stereotactic Radiation in Patients With Intraprostatic Tumor Recurrence (STEREO-RE-PRO)
Local Recurrence of Malignant Tumor of Prostate
About this trial
This is an interventional treatment trial for Local Recurrence of Malignant Tumor of Prostate
Eligibility Criteria
Inclusion Criteria:
- Biochemical recurrence occurring at least 2 years after external radiotherapy for prostatic adenocarcinoma by the Phoenix definition (PSA nadir + 2 ng/mL)
- T1-T2c and PSA ≤20 ng/mL and Gleason score ≤7 at initial diagnosis of prostate cancer before the initial/first treatment.
- Recurrence of prostatic adenocarcinoma proven by histology following radiotherapy by transrectal or transperineal sextant biopsies of the two lobes of the prostate, with a minimum of 12 biopsies, irrespective of Gleason score. Biopsies of the seminal vesicles are optional.
- Clinical stage T1-T2 on relapse; unilateral extracapsular extension (T3a) on MRI permitted except posteriorly relative to the rectum
- Estimated clinical target volume (CTV) / prostate volume < 0.5 based on imaging and biopsies
- Pelvic and prostatic assessment by multiparametric MRI- Absence of pelvic or metastatic recurrence proven by choline PET scan
- Performance status World Health Organization (WHO) 0-1
- PSA level ≤10 ng/mL at baseline (before salvage-SBRT)
- PSA doubling time >10 months
- International Prostate Cancer Score (IPSS) ≤12
- Uroflowmetry with a maximum flow rate >10 mL/s, a postvoid residual urine volume <150 mL, and a urine volume >150 mL.
- No other anti-cancer treatment since the external radiotherapy administered as first-line treatment
- No other anti-cancer treatment planned for the current recurrence
- No contraindication to fiducial marker implants; haemostatic disorders must be corrected before implantation
- Age >18 years
- Life-expectancy greater than or equal to 5 years (Lee scale)
- Patient registered with a health insurance system
- Patient who has signed the informed consent form
- Patients willing and able to comply with the scheduled visits, treatment plan, laboratory tests, and other study procedures indicated in the protocol.
Exclusion Criteria:
- Lymph node or metastatic spread
- Late post-radiotherapy urinary or gastrointestinal toxicity of grade ≥2 (following primary radiotherapy)
- Other cancers in the last 5 years except for non-melanoma-type skin cancer
- History of inflammatory bowel disease
- Anticoagulant treatment
- Contraindications to undergoing MRI
- Prostate volume >80 cc
- Transurethral resection of the prostate (TURP) in the 6 months before registrations
- Presence of rectal telangiectasia grade 3 classified by the Vienna Rectoscopy Score (obligatory rectoscopy)
- Previous rectal surgery
- Patients unable to undergo medical follow-up in the study for geographical, social or psychological
- Person deprived of their liberty or under protective custody or guardianship
- Patients enrolled in another therapeutic study
All patients during the SBRT planning with a ratio of clinical target volume (CTV) / prostate volume >0.5 will be withdrawn from the study. These patients will be considered as not evaluable and will not be treated within the context of the study.
Sites / Locations
- Centre François BaclesseRecruiting
- Centre Jean PerrinRecruiting
- Centre George François LeclercRecruiting
- Centre Oscar LambretRecruiting
- Centre Léon BérardRecruiting
- Institut régional du Cancer de MontpellierRecruiting
- Groupe Hospitalier Pitié-SalpétrièreRecruiting
- CHU de Poitiers
- DE CREVOISIER RenaudRecruiting
- ICO -Site René GauducheauRecruiting
- Institut de Cancérologie Lucien NeuwirthRecruiting
- CHRU Henry S.KaplanRecruiting
- Institut de Cancérologie de LorraineRecruiting
Arms of the Study
Arm 1
Arm 2
Arm 3
Experimental
Experimental
Experimental
SBRT at a total dose of 30 Gy
SBRT at a total dose of 25 Gy
SBRT at a total dose of 36 Gy
Placement of fiducials marker seeds in the prostate followed by the administration of stereotactic body radiotherapy at 30 Gy (5 sessions at a level of 6 Gy each- 1 session per day) 30 Gy is the first dose-level. During the treatment phase of the study, no study specific visits are scheduled and the patients will be followed as per standard of care.
Placement of fiducials marker seeds in the prostate followed by the administration of stereotactic body radiotherapy at 25 Gy (5 sessions at a level of 5 Gy each- 1 session per day) During the treatment phase of the study, no study specific visits are scheduled and the patients will be followed as per standard of care.
Placement of fiducials marker seeds in the prostate followed by the administration of stereotactic body radiotherapy at 36 Gy (6 sessions at a level of 6 Gy each- 1 session per day) During the treatment phase of the study, no study specific visits are scheduled and the patients will be followed as per standard of care.