Prostate Cancer Clinical Trial
Official title:
Focal Low Dose Rate ( LDR) Brachytherapy: Hemi-ablative Treatment With LDR for Patients With Low and Low-tier Intermediate Risk Prostate Cancer
Whole gland LDR brachytherapy has been a well established modality of treating low risk
prostate cancer. Treatment in a focal manner has the advantages of reduced toxicity to
surrounding organs.
AIM: To determine the utility of focal LDR brachytherapy in form of hemiablative treatment
for localized prostate cancer demonstrating the feasibility of the delivery of the
prescription dose to the half of the prostate in terms of meeting standard dosimetric
parameters while respecting same or lower tolerance doses of adjacent normal organs.
To determine acute and late rectal, urinary and sexual toxicity after this procedure.
To assess the change from baseline in QOL indicators at specific time intervals using
validated international questionnaires [International Prostate Symptom Score ( IPSS),
International Index of Erectile Function ( IIEF ), Expanded Prostate Cancer Index (EPIC)]
after this treatment.
To evaluate the local tumour control in terms of biopsy outcomes after focal brachytherapy
36 months after the treatment.
To compare target coverage and relative doses to the rectum and the urethra for the same
patient performing a hemigland treatment planning vs Whole gland treatment planning.
STUDY DESIGN: Multi-institution prospective trial to determine whether hemiablative
treatment with LDR for prostate cancer is dosimetrically safe and feasible.This study will
record data for 20 patients with ipsilateral with low and low tier intermediate risk
disease.The study will record quality of life parameters in particular in terms of urinary,
rectal and sexual function side effects.
INTERVENTION:
- Baseline Transperineal Template guided mapping prostate biopsy with >20 cores (not
required if already performed)
- Multiparametric MRI within the 3 months prior to registration and at 18 & 36 months.
- Hemigland prostate region will be targeted with the prescription dose and receive 144
Gy of Iodine125 (I125).
- The quality of life assessment will focus on erectile function, urinary function, bowel
function, and general health related quality of life
- Postimplant CT Planning day 30 after the implant for quality assurance.
MEASUREMENT OF ENDPOINTS :
Dosimetric parameters record, Toxicity and QOL evaluation forms, PSA follow up and biopsies
at 36 months to assess local control.
n/a
Endpoint Classification: Efficacy Study, Intervention Model: Single Group Assignment, Masking: Open Label, Primary Purpose: Treatment
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