“I was keen to go on a clinical trial. I wanted to try new cancer treatments and hopefully help future generations.”
A study looking at long term side effects after treatment for early stage breast cancer
This study looked at sleep and memory problems and the causes of severe tiredness (fatigue) after treatment for early stage breast cancer. This study was supported by Cancer Research UK.
Treatment for early stage breast cancer often works well and you can remain free of breast cancer in the long term. But it is possible that you will have long term side effects from your treatment. These side effects may include tiredness and lack of energy (fatigue) and sleep, mood and memory problems. We know from research that some patients find fatigue more distressing than pain or feeling and being sick.
Researchers want to understand more about the causes of fatigue after treatment for early breast cancer. The aims of this study were to
- Look at the relationship between fatigue, sleep problems and memory disturbances
- Identify and monitor proteins in the blood (markers) that are linked to fatigue
Summary of results
The research team found that a significant number of women who’d had treatment for breast cancer had cancer related fatigue syndrome (CRFS). CRFS is when extreme fatigue affects your physical or mental (cognitive) ability to do everyday things.
This study recruited 114 women from St George’s Hospital in London. The women taking part had finished treatment for early stage breast cancer between 3 months and 2 years before they joined the study. Of the 114 women,
- 45 women had cancer related fatigue syndrome (CFRS)
- 69 women didn’t have CFRS and became the
The research team assessed everyone taking part to find out more about the effect fatigue had. The women taking part
- Had a blood test
- Completed questionnaires
- Completed an activity record
- Did a test on a computer to measure their memory and motor skills
The research team found that there were significant differences between the CRFS group and the control group with
- Sleep quality
- Daytime activity level
- How quickly they could do things or work things out
- Levels of proteins called
cytokinesin the blood
The research team concluded that a significant number of women have CRFS, and that it affects their daily activities. They recommend that health care professionals routinely identify women with, or at risk of, CRFS and give them more information and advice about coping with fatigue.
We have based this summary on information from the team who ran the trial. The information they sent us has been reviewed by independent specialists (
How to join a clinical trial
Dr Ollie Minton
Cancer Research UK
National Institute for Health Research Cancer Research Network (NCRN)
This is Cancer Research UK trial number CRUK/06/042.