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Hypofractionated Focal Lesion Ablative Microboost in prostatE Cancer

2016-08-03 06:08:24 | BioPortfolio

Summary

The hypo-FLAME study is a multicenter phase II study (n=100) to investigate whether a focal SBRT boost to the MRI-defined macroscopic tumor volume is feasible and associated with acceptable toxicity in addition to whole gland prostate SBRT.

Description

Rationale: Hypofractionation with a stereotactic body radiotherapy (SBRT) technique for prostate cancer produces excellent treatment outcome in terms of survival and toxicity and is much more convenient than the current fractionation scheme. Local recurrence occurs most frequently at the site of the primary or dominant tumor location prior to treatment. Therefore dose escalation at the site of the primary tumor may improve disease control.

Objective: The main goal of this phase II study is to investigate whether a focal ablative SBRT boost to the macroscopic tumor is feasible and associated with acceptable toxicity in addition to whole gland prostate SBRT. The secondary objectives of this study are: late toxicity, quality of life (QoL) and biochemical disease free survival (bDFS). Furthermore, two side-studies are incorporated in this phase II study: 1) a weekly MRI will be performed to prepare for future MRI-guided (MR-linac) treatment without gold fiducial markers and 2) blood sampling for translational research (radiogenomics) and Biobank purposes.

Study design: Prospective multicenter interventional study on whole gland prostate SBRT using MRI for focal boost in 100 consecutive intermediate or high risk prostate cancer patients.

Study population: One hundred patients with histologically proven prostate adenocarcinoma with intermediate risk or high risk disease. Patients referred for external beam radiotherapy (EBRT) who fulfill the inclusion criteria and without any of the exclusion criteria will be included in the present trial after written informed consent.

Intervention: Patients will be treated by external beam radiotherapy with a SBRT technique with 35 Gy in 5 weekly fractions and an additional simultaneously integrated focal boost to the tumor nodule(s) visible on MRI up to 50 Gy. In addition, patients will be asked to undergo 5 additional MRI scans (~15 min/scan) without contrast enhancement prior to each radiation session as well as blood sampling for translational research (radiogenomics) and Biobank purposes.

Main study parameters/endpoints: The primary endpoints of this study are acute gastrointestinal (GI) and genitourinary (GU) toxicity using the Common Terminology Criteria for Adverse Events (CTCAE) version 4.0. Secondary endpoints are late GI and GU toxicity, QoL, and bDFS. Simultaneously, two side-studies will be performed, i.e. to prepare for MRI-guided radiotherapy and blood sampling for translational research (radiogenomics) and Biobank purposes.

Study Design

Endpoint Classification: Safety/Efficacy Study, Intervention Model: Single Group Assignment, Masking: Open Label, Primary Purpose: Treatment

Conditions

Prostate Cancer Adenocarcinoma

Intervention

Hypo-FLAME study

Location

UZ Leuven
Leuven
Belgium

Status

Recruiting

Source

UMC Utrecht

Results (where available)

View Results

Links

Published on BioPortfolio: 2016-08-03T06:08:24-0400

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