Finding studies
Finding studies
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Lead
Sunnybrook Health Sciences Centre
With
24 patients meeting inclusion criteria will be randomised between two arms. Arm 1 (Uniform dose) will receive 27 Gy in 2 fractions to the whole prostate + seminal vesicles (SV), the CTV, with 0 mm CTV-PTV margin. Arm 2 (De-escalated dose) will use two dose levels: The benign prostate (on MRI) will receive 20 Gy in 2 fractions with a 0mm PTV margin. The intraprostatic tumour mass(es) as seen on MRI will receive 27 Gy in 2 fractions. A 4mm GTV-PTV margin will be added to the MR visible tumour to form PTV 27Gy. The primary endpoint is emergent acute GU CTCAE v5 Grade 2+ toxicity, recorded within 3 months of completing radiotherapy. Secondary endpoints are CT CAE v5 acute GI toxicity, late toxicity, patient-reported outcome measures (PROMs) (EPIC-26, IPSS, and IIEF-5) at 4 and 12 weeks, 6 months, 1 and 2 years post treatment, PSA control and kinetics
Age
18–any
Sex
MALE
Healthy volunteers
Not accepted