Around 1 in 5 people diagnosed with cancer in the UK take part in a clinical trial.
A trial looking at PET scans for people having treatment for non Hodgkin lymphoma
Please note - this trial is no longer recruiting patients. We hope to add results when they are available.
This trial is looking at whether PET scans show doctors how well treatment is working for non Hodgkin lymphoma. You can join this trial if you are going to have chemotherapy called RCHOP21. This trial is supported by Cancer Research UK.
At the moment, doctors use CT scans before and after treatment to see if the treatment has shrunk the lymphoma, or if it has grown.
But these changes can sometimes be difficult to see. A PET scan may help with this. PET stands for 'positron emission tomography'. It is a scan that shows areas of active cancer in the body, rather than 'abnormal' areas that may be something harmless such as scar tissue.
The aim of this trial is to find out whether PET scans show doctors how well treatment is working at an earlier stage. In the future this means doctors may be able to change or stop treatment earlier if it is not working.
Who can enter
You can enter this trial if you
- Have diffuse large B cell lymphoma and need treatment with a chemotherapy regime called RCHOP21
- Have access to PET scanning (your doctors will be able to tell you more about this)
You cannot enter this trial if, before you start treatment, you have a PET scan that does not show any active cancer. This is called a negative PET scan.
Everybody taking part in this study will have RCHOP21 chemotherapy. You have cyclophosphamide, doxorubicin, vincristine and rituximab through a drip into a vein once every 3 weeks. And you take prednisolone tablets once a day for 5 days every 3 weeks. Each 3 week period is one cycle. You have 6 cycles of this treatment. Then you have 2 cycles of rituximab alone. So you have 8 cycles of treatment in total.
You will also have 2 PET scans. You will have a PET scan before you start treatment, and before your 3rd cycle of chemotherapy.
When you have the PET scan you can’t have anything to eat or drink for about 6 hours beforehand. First of all, you will have an injection of a radioactive drug (tracer). The amount of radiation is very small and it shouldn’t cause any side effects. You will have the scan about 90 minutes later. The scan itself may take up to an hour and you will need to lie flat throughout this time.
You and your doctor will be told the result of the first PET scan which you have before you start treatment. The doctor will talk to you about what the scan shows. But neither you, nor your doctors will be told the result of the second PET scan, which you have before your 3rd cycle of chemotherapy. So this scan will not affect your treatment. You will also have a CT scan as part of the R-CHOP-21 trial. The doctors will use the result of the CT scan to make decisions about your treatment.
How to join a clinical trial
Please note: In order to join a trial you will need to discuss it with your doctor, unless otherwise specified.
Dr. George Mikhaeel
Cancer Research UK
NIHR Clinical Research Network: Cancer
This is Cancer Research UK trial number CRUK/07/027.