FASTR: Fairly Brief Androgen Suppression and Stereotactic Radiotherapy for High Risk Prostate Cancer
Randomized controlled trials have established the improved efficacy (better biochemical
control and disease free survival) of combined radical radiation (70-80Gy/7-8 weeks)
combined with long term hormone therapy (2-3 years of adjuvant luteinizing hormone releasing
hormone (LHRH) agonist) compared to a primary hormone therapy or radiotherapy alone in men
with locally advanced/high risk disease. While this approach may be tolerable in fit
individuals, this combination may not be well tolerated by frail individuals or those who
live at a distance who may find it difficult to attend for 7 weeks of radiation due to
travel considerations. Those individuals with co-morbidities such as diabetes, coronary
artery disease or osteoporosis may have those conditions exacerbated by long term hormone
therapy.
This pilot study will explore the combination of a stereotactic body radiotherapy (SBRT)
approach (designed to be iso-effective for late effects for standard radiotherapy) combined
with one year of LHRH agonist for older men with high risk disease who are less fit
(Vulnerable Elderly Score > 3) or men unwilling to undertake conventionally fractionated
therapy and three years of adjuvant hormone therapy.
Interventional
Endpoint Classification: Safety/Efficacy Study, Intervention Model: Single Group Assignment, Masking: Open Label, Primary Purpose: Treatment
Toxicity
Assessment of late genitourinary and gastrointestinal toxicity at 1 year as assessed by the Common Toxicity Criteria
year 1 of follow-up
Yes
Glenn Bauman, MD
Principal Investigator
London Regional Cancer Program of the Lawson Health Research Institute
Canada: Ethics Review Committee
R-11-220
NCT01439542
September 2011
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