
"Health wise I am feeling great. I am a big supporter of trials - it allows new treatments and drugs to be brought in.”
Please note - this trial is no longer recruiting patients. We hope to add results when they are available.
This trial is for men with prostate cancer that has spread and whose cancer no longer responds to hormone therapy. It is for men who haven’t had the chemotherapy drug docetaxel.
Cancer Research UK supports this trial.
If prostate cancer has spread to another part of the body, doctors often treat it with hormone therapy. This can work well, but after a period of time the cancer can start to grow again. If this happens, men may have a drug called abiraterone. If you have abiraterone, you also take a steroid called prednisolone.
Sometimes you may also have another type of hormone therapy drug called enzalutamide.
Researchers want to see if having a new drug called idasanutlin (or RO5503781) alongside abiraterone and prednisolone or enzalutamide helps men with prostate cancer that has spread and is no longer responding to hormone therapy.
Cancer cells can switch off a protein called p53 which would normally signal that a faulty cell, such as a cancer cell should die. Idasanutlin is designed to switch this protein back on which means the cancer cells will stop growing and die.
The aims of this trial are to
You may be able to join this trial if all of the following apply
You cannot join this trial if any of these apply. You
This trial is in 2 parts called phase 1 and phase 2. The researchers need more than 120 men to take part.
Phase 1
In this phase, the researchers are trying to find the highest dose of RO5503781 that you can have safely alongside abiraterone and prednisolone or enzalutamide. This phase is in 2 parts:
Everybody joining part A has abiraterone, prednisolone and idasanutlin.
The first few men taking part will have a low dose of idasanutlin. If they don’t have any serious side effects, the next few patients will have a higher dose. And so on, until they find the best dose. This is called a dose escalation study.
You take abiraterone and prednisolone tablets every day. You take idasanutlin for 5 days every 4 weeks.
Everybody joining part B has enzalutamide and idasanutlin. You have the dose of idasanutlin found during part A.
You have enzalutamide tablets every day. And take idasanutlin tablets for 5 days every 4 weeks
Phase 2
In the 2nd phase of the trial, the researchers want to compare idasanutlin with a dummy drug (a ).
This part of the trial is randomised. The men taking part are put into 1 of 2 treatment groups by a computer. Neither you nor your doctor will be able to decide which group you are in. And neither of you will know which group you are in. This is called a double blind trial.
All the men joining this part of the trial have abiraterone and prednisolone or enzalutamide. Half of them will also have idasanutlin. The other half will have a dummy drug.
You take abiraterone and prednisolone or enzalutamide tablets every day. You take idasanutlin (or the dummy drug) for 5 days every 4 weeks.
Whichever phase of the trial you join, you can carry on having treatment until the trial doctors can tell that your cancer is getting worse.
If you join the 2nd phase of the trial and your cancer starts to get worse, the trial team can find out whether you’ve been having idasanutlin or the dummy drug. If you have been having the dummy drug, you may be able to start having idasanutlin.
You see the trial team and have a number of tests before you start treatment. The tests include
The trial team need to get a sample of your cancer that was removed when you had surgery or a in the past. If there isn’t a stored sample available, they will ask you to have a new biopsy.
They may also ask you to have more biopsies from areas of cancer spread before you start treatment, during treatment and at the end of treatment. They will use these to see how the cancer responds to treatment. But you don’t have to have these biopsies if you don’t want to. You can still take part in the trial.
If you join the 1st part of the trial, you need to have a number of extra blood tests on 3 different days at the beginning of your treatment. On these days, you will be at hospital for a number of hours.
Everybody in the trial goes to hospital at least every 4 weeks during treatment. You have regular blood tests and the trial team will monitor your blood pressure.
You have a CT scan, and possibly a bone scan and MRI scan, every 8 weeks for the first 6 months, and then every 12 weeks for the rest of the time you take the tablets.
When you finish treatment, you will continue to see the trial team every 3 months until any side effects have got better or you start another treatment.
If you stop having the trial treatment for any reason other than your cancer getting worse, the trial team would like to see you every 6 weeks until you start another treatment.
As idasanutlin is a new drug, there may be side effects we don’t know about yet. In trials so far, the most common problems have been
We have information about
Please note: In order to join a trial you will need to discuss it with your doctor, unless otherwise specified.
Dr Rob Jones
Cancer Research UK
NHS Greater Glasgow and Clyde
NIHR Clinical Research Network: Cancer
Roche
University of Glasgow
This is Cancer Research UK trial number CRUKE/12/032.
Freephone 0808 800 4040
"Health wise I am feeling great. I am a big supporter of trials - it allows new treatments and drugs to be brought in.”