Serial mpMRI (Multi Parametric Magnetic Resonance Imaging) Scanning in Prostate Cancer After Androgen Deprivation Therapy and RadioTherapy

Study Overview
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Brief Summary
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The evaluation of the radiological changes in localised or locally advanced prostate cancer after androgen deprivation therapy and external beam radiotherapy using multi-parametric MRI (multi parametric magnetic resonance imaging) and VERDICT (Vascular, Extracellular and Restricted Diffusion for Cytometry in Tumours) sequences.

Detailed Description
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External beam radiotherapy (EBRT) fails to eradicate prostate cancer in 24-33% of cases. Response is monitored solely by testing serum prostate specific antigen (PSA), with biochemical failure following radiotherapy defined as a prostate specific antigen (PSA) level of 2 ng/ml above the nadir. T2 and Dynamic Contrast Enhanced (DCE) MRI have been shown to be able to detect the recurrence of prostate cancer following radiotherapy. Changes seen in Apparent Diffusion Coefficient (ADC) variables post-treatment have potential use in monitoring disease response to radiotherapy but the natural history of these changes during and after treatment remains uncertain and warrants further investigation. This study investigates the feasibility of using multi-parametric MRI (mpMRI) and novel diffusion-weighted sequences called VERDICT (Vascular, Extracellular and Restricted Diffusion for Cytometry in Tumours) at various stages during the treatment of prostate cancer with radiotherapy. Patients will be first scanned before androgen deprivation therapy (ADT) starts, then 3 weeks before the start of radiotherapy, again in week 6 of radiotherapy and once more 6 months after the end of radiotherapy. In addition, all patients entered into the study will already have had a mpMRI scan prior to prostate biopsy as part of their standard care. Multi-parametric MRI and VERDICT sequences may reveal changes in the tumour and normal prostate before a detectable PSA increase. This could allow for their use in response assessment following radiotherapy and androgen deprivation treatment. If such clinical utility is proven, referral for salvage treatment using High Intensity Focussed Ultrasound (HIFU), cryotherapy or salvage radical prostatectomy may be expedited.

Official Title
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Serial mpMRI (Multi Parametric Magnetic Resonance Imaging) Scanning in Prostate Cancer After Androgen Deprivation Therapy and RadioTherapy (SMART)

Conditions
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Prostate Cancer

Intervention / Treatment
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* Device: mpMRI/VERDICT
* Radiation: External Beam Radiotherapy


Participation Criteria
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Eligibility Criteria
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Inclusion Criteria: Targeted or Concordant biopsy confirmed prostate cancer Pre-biopsy mpMRI scan of the prostate undertaken at University College London Hospital (UCLH) Agrees to have ADT and EBRT Exclusion Criteria: Treatment within the previous 6 months with any form of hormones (including 5-alpha reductase inhibitors) Evidence of metastatic disease Prior local intervention to the prostate Unable to give informed consent Any prosthesis (including hip replacements) which could cause artefacts degrading the quality of the imaging Contraindication to gadolinium contrast agent Unable to tolerate an MRI

Ages Eligible for Study
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Minimum Age: 18 Years

Sexes Eligible for Study
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Male

Accepts Healthy Volunteers
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No

Study Plan
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How is the study designed?
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Design Details

Primary Purpose: Diagnostic
Intervention Model: Single Group Assignment
Masking: None (Open Label)


Arms and Interventions

| Participant Group/Arm | Intervention/Treatment |
| --- | --- |
| Other: Pre- and Post- Radiotherapy MRI<br>mpMRI/VERDICT sequences to be preformed pre- and post- EBRT (external beam radiotherapy) according to the following schedule: Pre-Androgen Deprivation Therapy 3 weeks before radiotherapy 6 week after starting radiotherapy 6 Months after starting radiotherapy External Beam Radiotherapy to be given after 3 months of androgen deprivation | Device: mpMRI/VERDICT<br>* Combined MRI sequences of T2, DCE, Diffusion and VERDICT<br>Radiation: External Beam Radiotherapy<br>* 78Gy (Gray) to Prostate +/- Pelvic<br>|

What is the study measuring?
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Primary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Measurement of changes in MRI ADC value |  | 6 months | 
| Measurement of changes in mpMRI tumour volume (cubic centimetres) |  | 6 months | 
| Measurement of changes in enhancement measured as a transfer constant (KTrans) value |  | 6 months | 

 Terms related to the study
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Keywords Provided by Centre Hospitalier Valida
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MRI, Radiotherapy