Around 1 in 5 people diagnosed with cancer in the UK take part in a clinical trial.
A trial looking at chemotherapy after surgery for bladder cancer (EORTC 30994)
This trial looked at the timing of chemotherapy after surgery for bladder cancer. The trial was for people with bladder cancer that had grown through the muscle wall or had spread to nearby
More about this trial
If bladder cancer has grown through the muscle layer of the bladder, it is called invasive bladder cancer. Doctors usually treat invasive bladder cancer with surgery or radiotherapy. But sometimes the cancer can come back after treatment.
In this trial, researchers tried to find out if having chemotherapy after surgery could help to treat invasive bladder cancer. But because chemotherapy has
The aims of the trial were to find out if it is better
- To have chemotherapy straight after surgery to try to stop the cancer from coming back OR
- To keep chemotherapy in reserve and only use it to treat the cancer if it does come back
Summary of results
The trial team found that having chemotherapy straight after surgery didn’t increase the average time people lived after treatment.
284 people with muscle invasive bladder cancer or bladder cancer that had spread to the lymph nodes took part in this trial. Everyone had already had their bladder removed (radical cystectomy). They were put into 1 of 2 groups at random
- 141 had chemotherapy within 3 months of surgery (immediate treatment)
- 143 didn’t have chemotherapy unless their cancer came back (deferred treatment). 67 people in this group had cancer that came back and went on to have chemotherapy.
The researchers looked at the number of people whose cancer hadn’t got worse 5 years after the trial started. Doctors call this progression free survival. They found this was
- Just under 5 out of 10 people (47.6%) who had chemotherapy straight after surgery
- Just over 3 out of 10 people (31.8%) who didn’t have chemotherapy straight after surgery
The researchers also looked at the number of people living 7 years after the trial started. Doctors call this overall survival. They found no significant difference between the 2 different groups. So having chemotherapy straight after surgery is no better than having it if the cancer comes back.
The trial team hoped that about 660 people could join this trial but it was difficult to find enough people with this type of cancer to take part. The researchers think it is possible that that some sub groups could benefit from immediate chemotherapy, but as they didn’t recruit enough people they can’t say for sure. They suggest that future trials could possibly look at chemotherapy after surgery for these sub groups. For example, if future research identifies patients who are at very high risk of the cancer coming back or if they have cancer which future research shows is particularly sensitive to chemotherapy.
We have based this summary on information from the research team. The information they sent us has been reviewed by independent specialists (
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 Michael Leahy
Cancer Research UK
European Organisation for Research and Treatment of Cancer (EORTC)
NIHR Clinical Research Network: Cancer
University of Leeds
This is Cancer Research UK trial number CRUK/02/009.