An interventional study of Hypofraction and Standard in Prostate Cancer, sponsored by CHU de Quebec-Universite Laval. Active, not recruiting at 1 site in Canada. Open to male participants aged 18 Years to 95 Years. Per ClinicalTrials.gov, last updated 2024-03-21.
Sponsored by CHU de Quebec-Universite Laval · Not applicable, Interventional, and Treatment
The purpose of this study is to compare toxicities between 2 external beam radiation fractionation schemes plus a brachytherapy boost for prostate cancer. Our current standard use a 2 Gy per fraction schedule which is compare to the experimental hypofractionated 3 Gy per day approach with neo adjuvant hormonal therapy. It will demonstrate the feasibility and safety of such a treatment regimen in prostate cancer. It may also set base for a larger randomized trial.
30 patients with intermediate / extensive low risk (all core biopsies involvements > 50%) prostate cancer (not necessitating to treat the nodal regions) will be included in this study. Patient stage T1 - T2, Gleason score ≤ 7, prostate-specific antigen (PSA) ≤ 20 will be considered.
Fiducial gold markers will be introduced in the prostate 1-week before the CT planning. 36 gray (Gy) in 12 fractions using intensity-modulated radiation therapy (IMRT) will be administered to the prostate (margins of 0,5cm) +/- first centimeter of the seminal vesicles.
Brachytherapy boost (15 Gy x 1) dosimetric parameters should respect our current standard (Prostate V100 > 90% and V150 ≤ 40%, V200 ≤ 15%, Urethra V125 ≤ 1 cc, Rectum V75 ≤ 1cc, Bladder V75 ≤ 1cc). Short course (4 months) hormonal therapy (Degarelix) will be administered to the patient based upon recommended litterature11, 12.
Genitourinary (GU), GI and Sexual toxicity will be self reported. QOL questionnaires will be given to the patients to be answered. Results will be monitored and compared to our currently used standard fractionation regiment.
Follow-up will be scheduled 6 weeks after the implant and every 4 months for the first year, every 6 months for the second year 2 to 5, and on a yearly basis after 5 years. PSA \& testosterone tests will be done every 3 months for the first 3 years, every 6 months on years 4 and 5, and yearly thereafter.
6,370 studies on the registry are indexed under Prostatic Neoplasms; 1,400 are open to participants now.
This study's planned enrollment of 30 is below the median of 58 across 4,822 interventional studies indexed under Prostatic Neoplasms.
Browse Prostatic Neoplasms studies →CHU de Quebec-Universite Laval is the lead sponsor of 134 studies on the registry; 27 are open to participants now.
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Exclusion Criteria:
Patient reported toxicities related to Hypofraction radiation treatment (3 Gy daily, 5 fractions per week) up to a total of 36 Gy to the prostate (+/- seminal vesicles) plus brachytherapy boost (15 Gy in a single fraction) with 4 months neo-adjuvant firmagon (240 mg given as two subcutaneous injections of 120 mg at a concentration of 40 mg/mL as a starting dose with a maintenance dose of 80 mg given as one subcutaneous injection at a concentration of 20 mg/mL administered every 28 days).
Radiation: Hypofraction
Patient reported toxicities related to the Standard radiation treatment (2 Gy daily, 5 fractions per week) up to a total of 44 Gy to the prostate (+/- seminal vesicles) plus brachytherapy boost (15 Gy in a single fraction) with 4 months neo-adjuvant LHRH agonists.
Radiation: Standard
Patient reported toxicities related to Hypofraction radiation treatment (3 Gy daily, 5 fractions per week) up to a total of 36 Gy to the prostate (+/- seminal vesicles) plus brachytherapy boost (15 Gy in a single fraction) with 4 months neo-adjuvant firmagon (240 mg given as two subcutaneous injections of 120 mg at a concentration of 40 mg/mL as a starting dose with a maintenance dose of 80 mg given as one subcutaneous injection at a concentration of 20 mg/mL administered every 28 days).
Patient reported toxicities related to the Standard radiation treatment (2 Gy daily, 5 fractions per week) up to a total of 44 Gy to the prostate (+/- seminal vesicles) plus brachytherapy boost (15 Gy in a single fraction) with 4 months neo-adjuvant LHRH agonists
Evaluate and compare toxicity changes through follow-up between our study population and a reference group in regards to Median international prostate symptoms scores (IPSS).
Comparison of the patient reported IPSS scores through the follow-up between each treatment group.
Time frame: baseline, 6 weeks post-implant, and at 4,8,12 months
Evaluate and compare toxicity changes through follow-up between our study population and a reference group in regards to gastro-intestinal (GI) toxicity score.
Comparison of the patient reported Gastro-intestinal toxicity scores through the follow-up between each treatment group.
Time frame: baseline, 6 weeks post-implant, and at 4,8,12 months
Evaluate and compare toxicity changes through follow-up between our study population and a reference group in regards to Sexual toxicity (EPIC or SHIM) score.
Comparison of the patient reported Sexual toxicity (EPIC or SHIM) scores through the follow-up between each treatment group.
Time frame: baseline, 6 weeks post-implant, and at 4,8,12 months
Evaluate and compare biochemical disease free survival being non inferior to comparative cohort
biochemical disease free survival (Phoenix definition)
Time frame: 5 years
This study is active, not recruiting, as verified in Mar 2024. You cannot join it, but the record below documents what was studied.
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CHU de Quebec-Universite Laval