Value of androgen deprivation and bisphosphonate in patients treated by radiotherapy for localised prostate cancer

Funded Activity Summary

Following on from significant findings in the TROG 96.01 trial, the 03.04 trial, known as the RADAR trial was developed. This is a large-scale randomised controlled clinical trial currently conducted at 23 cancer treatment centres throughout Australia and New Zealand. The RADAR trial aims to recruit 1000 men with localised but inoperable prostate cancer. It was anticipated that the length of time required to enrol 1000 participants to the trial would be 5 years. However, because enrolment has exceeded expectations and 728 patients have already been recruited, it is anticipated that the recruitment target will be reached in mid 2007. Patients are randomly assigned to receive one of four treatment options in the RADAR trial. The first option: Option A: Radiation Therapy and 6 months of Hormone Therapy (Leuprorelin acetate), is currently the standard of care. Option C is a further 12 months of hormone therapy after the current standard of care. Two of the options (B and D) are identical to options A and C except that subjects also receive 18 months of zoledronate (a 'bone' drug) in addition to hormone therapy and radiotherapy. The main goal of the RADAR trial is to determine whether 12 months of hormone therapy using Leuprorelin acetate starting immediately after standard therapy (ie 6 months of Leuprorelin acetate before and during radiotherapy) will reduce risk of return of the cancer, either within the prostate region or at remote sites in the body, and prolong life. An additional goal is to see whether 18 months of bisphosphonate therapy (bone density therapy) using zoledronate will reduce the risk of cancer returning in the bones as well as stopping dangerous bone thinning which can sometimes be caused by hormone therapy. The trial also seeks to determine whether the additional therapy given in this trial alters quality of life.

Funded Activity Details

Start Date: 01-01-2007

End Date: 01-01-2012

Funding Scheme: Project Grants

Funding Amount: $2,533,827.00

Funder: National Health and Medical Research Council

Research Topics

ANZSRC Field of Research (FoR)

Oncology and Carcinogenesis

ANZSRC Socio-Economic Objective (SEO)

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Other Keywords

clinical trial | endocrine therapy | metastases | prostate cancer | prostate cancer metastasis | prostate carcinoma-RT (Radiotherapy) | quality of life | radiotherapy | radiotherapy-adverse events

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