Comparison of health-related quality of life 5 years after SPIRIT: Surgical Prostatectomy Versus Interstitial Radiation Intervention Trial.
Juanita Mary Crook, Alfonso Gomez-Iturriaga, Kris Wallace...
https://pubmed.ncbi.nlm.nih.gov/21149658Actively Recruiting
Led by CHU de Quebec-Universite Laval · Updated on 2025-09-09
205
Participants Needed
1
Research Sites
391 weeks
Total Duration
Researchers are evaluating two types of radiation therapy for men with localized prostate adenocarcinoma: ultra-hypofractionated (UH) therapy and moderately hypofractionated (MH) therapy, combined with image-guided high-dose-rate (HDR) prostate brachytherapy. The study aims to compare the side effects and tolerability of these radiation approaches and assess if UH therapy is not worse than MH therapy in terms of toxicity. The study also involves outlining MRI-visible dominant intra-prostatic lesions and examining variability between radiation oncologists and radiologists. Secondary goals include monitoring biochemical and clinical failure-free survival at 5 and 10 years. The trial includes two treatment groups: one receiving UH radiation therapy delivering 25 Gy in 5 fractions over 7 days, targeting the prostate and the first centimeter of the seminal vesicle; the other receiving MH radiation therapy delivering 37.5 Gy in 15 fractions or 36 Gy in 12 fractions over several weeks. All participants receive HDR brachytherapy with a single 15 Gy fraction under anesthesia, involving catheter and marker placement for precise treatment delivery. Imaging such as TRUS, CT scans, and multiparametric MRI are used for planning and monitoring. Treatment techniques include IMRT, VMAT, or SBRT, with dosimetric optimization and live dose monitoring in some patients. Participants undergo regular evaluations including toxicity assessments using CTCAE version 5, urinary symptom scoring (IPSS), sexual function questionnaires (SHIM), and quality of life surveys (EPIC-26) starting before treatment and continuing up to 5 years post-therapy. Clinical outcomes and biochemical failure rates are also tracked at 5 and 10 years. Safety and side effects are monitored carefully at multiple time points, with imaging and laboratory data collected before and after treatment. The study lasts several years to capture both acute and late effects of the therapies.
CONDITIONS
Ultra Hypofractionnated Radiotherapy With HDR Brachytherapy Boost.
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Complete this quick 3-step screening to check your eligibility
Duration - 2 to 4 weeks
Participants are screened for eligibility to participate in the trial.
1 visit (in-person) for eligibility assessment
Duration - 1 to 2 days
Participants undergo implantation of prostate brachytherapy catheters under anesthesia, followed by imaging and treatment planning before radiotherapy.
1 to 2 visits including implantation and planning imaging
Duration - 1 to 3 weeks depending on treatment arm
Participants receive either ultra hypofractionated or moderate hypofractionated radiotherapy combined with a high-dose-rate brachytherapy boost to the prostate and seminal vesicles.
5 radiotherapy fractions over approximately 7 days or 12 to 15 daily fractions over 2 to 3 weeks
Duration - Up to 5 years post-therapy
Participants are monitored for toxicity, urinary symptoms, sexual function, and quality of life through regular assessments up to 5 years post-treatment.
Visits at 3 months, 6 months, 1 year, then yearly up to 5 years
Total: 1 location
1
CHUdeQuebec
Québec, Canada, G1R 2J6
Actively Recruiting
A
Andre-Guy Martin
J
Josee Allard
Study Type
INTERVENTIONAL
Masking
NONE
Allocation
NON_RANDOMIZED
Model
PARALLEL
Primary Purpose
TREATMENT
Number of Arms
2
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