Prostate Cancer
Conditions
Keywords
SBRT, Ultrahypofractionated Radiotherapy, Localized Prostate Cancer
Brief summary
This phase I study will assess the toxicity profile and efficacy of SBRT (Stereotactic body radiotherapy) in patients with localized prostate cancer who are considered candidates for post-prostatectomy radiation.
Detailed description
Radical prostatectomy is a common treatment for localized prostate cancer, patients with a detectable and/or rising PSA after radical prostatectomy may be offered radiation. An increasing number of patients are being referred post-operatively for radiotherapy, which creates an added burden on radiotherapy departments. Therefore, a strategy that could potentially decrease the number of radiotherapy fractions, yet maintain its efficacy, would be highly desirable for patient convenience, cost saving, and resource utilization as long as the toxicity profile is acceptable. This study will be conducted to asses the toxicity and efficacy of Stereotactic body radiotherapy (SBRT) in post-prostatectomy patients.
Interventions
RADIATIONstereotactic body radiotherapy (SBRT)
Stereotactic body or external-beam radiation therapy (SBRT) is a method of delivery of radiation in precision manner to the prostate bed in this study. The SBRT dose prescription will be 3000 cGy in 5 fractions to the prostate bed and 2500 cGy in 5 fractions to the pelvic nodes if elective nodal irradiation (ENI) is used, delivered every other business day.
Sponsors
Royal Victoria Regional Health Centre
Princess Margaret Hospital, Canada
Credit Valley Hospital
Sunnybrook Health Sciences Centre
Study design
Allocation
NA
Intervention model
SINGLE_GROUP
Primary purpose
TREATMENT
Masking
NONE
Intervention model description
men diagnosed with prostate cancer post-prostatectomy
Eligibility
Sex/Gender
MALE
Age
18 Years to No maximum
Healthy volunteers
No
Inclusion criteria
* Histologically confirmed diagnosis of adenocarcinoma of the prostate status post radical prostatectomy * Completed written informed consent * Able and willing to complete EPIC, PORPUS, and EQ-5D questionnaires * A detectable PSA ≤ 2.0 ng/ml * Two consecutive rises in PSA and final PSA \> 0.1 ng/ml OR three or more consecutive rises in PSA
Exclusion criteria
* Gross residual disease (per conventional imaging, i.e. CT and/or MRI) * Histological or radiological node +ve (N1) or distant metastases (M1) * Prior pelvic radiotherapy * Contraindications to radical pelvic radiotherapy (e.g. connective tissue disease or inflammatory bowel disease)
Design outcomes
Primary
| Measure | Time frame | Description |
|---|---|---|
| Early Adverse Events/toxicities experience by Participants | 6.5 years | Incidence of acute GU and GI toxicities, based on Common Terminology Criteria for Adverse Events (CTCAE) v5.0 |
Secondary
| Measure | Time frame | Description |
|---|---|---|
| Late Adverse Events/toxicities experienced by Participants | 6.5 years | Incidence of late GU and GI toxicities (≥6 months) using CTCAE v5.0 |
| Quality of Life of participants using the Expanded Prostate Cancer Index Composite questionnaire | 6.5 years | Acute and late GU and GI quality of life (QoL) using the Expanded Prostate Cancer Index Composite questionnaire which evaluates participant's function and bother after prostate cancer treatment. Each question is scored from 1-5, 1 being the better outcome and 5 being the worst outcome. |
| Biochemical disease-free survival | 6.5 years | Biochemical disease-free survival (bDFS), defined as survival until first evidence of either biochemical progression (PSA of 0.4 ng/mL or greater) following postoperative radiotherapy, PSA of more than 2.0 ng/mL at any time after postoperative radiotherapy, clinical or radiological progression, initiation of non-protocol hormone therapy, or death from prostate cancer |
| Health Utilities using The Patient-Oriented Prostate Utility Scale | 6.5years | Health utilities using The Patient-Oriented Prostate Utility Scale to measure health-related quality of life, whether it improves, deteriorates or stay the same. There are 10 questions, each questions has 5 possible answers, with 1 being the better outcome and 5 being the worst outcome. |
| Health Utilities using EuroQol- 5 Dimension Questionnaire | 6.5years | Health utilities using the EuroQol- 5 Dimension Questionnaire determines 5 variables, each with 5 possible options, with the first being the best outcome and the last being the worst outcome. The 5 variables include: 1. Mobility 2. Self-care 3. Usual Activities 4. Pain/discomfort 5. Anxiety/depression |
Countries
Canada
Outcome results
None listed