A study looking for the best way to measure how well surgery for stomach cancer works (GASTROS)

Please note - this trial is no longer recruiting patients. We hope to add results when they are available.

Cancer type:

Stomach cancer





This study is for people with stomach cancer who have had, or are going to have, surgery to remove all or part of their stomach.

More about this trial

Surgery is a common treatment for stomach cancer. Your surgeon might remove:
  • part of the stomach if the cancer is at the lower end of your stomach (partial gastrectomy)
  • all of the stomach if the cancer is in the middle of your stomach (total gastrectomy)
To find out how well surgery for stomach cancer works, doctors look at different things such as:
  • how successful treatment was in treating the cancer
  • the side effects of treatment
  • what was the people’s quality of life Open a glossary item after treatment
This is called treatment outcomes. But doctors often use different treatment outcomes to measure how well surgery works. This makes it difficult to compare the different surgical treatments correctly. 
In this trial, doctors want to find out what are the best treatment outcomes to use to measure how well surgery for stomach cancer works. This is a list of the outcomes that all clinical trials should look at when evaluating a surgical treatment for stomach cancer in the future.

Who can enter

The following bullet points list the entry conditions for this study. Talk to your doctor or the study team if you are unsure about any of these. They will be able to advise you. 
Who can take part
You may be able to join this study if all of the following apply:
  • you have stomach cancer
  • you have had, or are going to have surgery to remove all or part of your stomach
  • doctors think that surgery can cure your cancer
  • you are at least 18 years old 
Who can’t take part
You cannot join this study if any of these apply. You:
  • are going to have stomach cancer surgery to help with your symptoms (palliative treatment) 
  • have had, or are going to have surgery to remove the cancer using a long flexible tube (endoscope) 

Trial design

Researchers are looking for people who have had, or are going to have surgery to take part. They are also looking for:
  • nurses who look after people with stomach cancer
  • surgeons who perform stomach cancer surgery 
Researchers hope that around 50 patients and 50 nurses and surgeons will agree to take part.
Everyone taking part completes 2 online questionnaires (surveys). It takes about 30 minutes to complete the first questionnaire. And about an hour to complete the second questionnaire.  
The trial team will send you an email when the second questionnaire is ready for you to complete. This can be up to 6 months after you completed the first questionnaire. 
Some of the questions the questionnaires ask are:
  • your age and gender
  • the country you live in and who you live with
  • what type of stomach cancer surgery you have had
The questionnaires will give you a list of possible treatment outcomes and ask you to score them. You can also include an outcome that you think it’s missing from the list. 

Hospital visits

You don’t have any extra hospital visits as part of this trial. You complete the online questionnaires at home using a computer, phone or tablet.

Side effects

The study team doesn’t think that you will have any side effects from taking part in this study. You may find upsetting answering questions about your cancer treatment. You don’t have to answer all the questions if you don’t want to. 

You have a phone number to call a cancer nurse specialist if you need to speak to someone.

Recruitment start:

Recruitment end:

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.

Please note - unless we state otherwise in the summary, you need to talk to your doctor about joining a trial.

Chief Investigator

Dr Bilal Alkhaffaf

Supported by

Association of Upper Gastrointestinal Surgeons of Great Britain and Ireland
International Gastric Cancer Association – European Chapter
Manchester University NHS Foundation Trust
Medical Research Council (MRC)
NIHR Academy
University of Manchester


Other information

Visit the GASTROS website to find out more about this study.

Freephone 0808 800 4040

Last review date

CRUK internal database number:


Please note - unless we state otherwise in the summary, you need to talk to your doctor about joining a trial.

Around 1 in 5 people take part in clinical trials

3 phases of trials

Around 1 in 5 people diagnosed with cancer in the UK take part in a clinical trial.

Last reviewed:

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