A trial of methotrexate for cancer that has spread in people with a faulty MSH2 gene (MESH)

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

Cancer type:

Bladder cancer
Bowel (colorectal) cancer
Colon cancer
Rectal cancer
Stomach cancer
Transitional cell cancer
Womb (uterine or endometrial) cancer




Phase 2

This trial is looking at the chemotherapy drug methotrexate for people with a change to a gene called MSH2. It is for people who have

Every cell contains DNA. This is the genetic information which controls how cells behave. In cancer cells, the DNA is changed or damaged. Cancers can have different types of changes in the DNA. One of these is when a gene Open a glossary item called MSH2 is not working properly.

Doctors often use chemotherapy to treat cancer. But sometimes the cancer comes back after treatment and spreads elsewhere in the body.

Methotrexate is a chemotherapy drug that is used to treat some types of cancer. We know from research that methotrexate kills cancer cells when the MSH2 gene is not working properly. Researchers want to find out if it will help people with a faulty MSH2 gene who have cancer that has spread.

The aims of this trial are to

  • See how much methotrexate helps people in this situation
  • Learn more about the side effects

Who can enter

You can enter this trial if you

  • Have cancer that started in your bowel, stomach, womb, bladder or urothelium and has grown into surrounding tissue, or has spread elsewhere in the body
  • Have cancer that did not respond to, or has come back after, treatment with standard chemotherapy, or you cannot have standard treatment Open a glossary item for some reason
  • Have a MSH2 gene fault (the doctors will do tests to confirm this)
  • Have satisfactory blood test results
  • Are well enough to take part in the trial (performance status 0, 1 or 2)
  • Are at least 18 years old
  • Are willing to use reliable contraception during the trial and for 6 months afterwards if there is any chance you or your partner could become pregnant

You cannot enter this trial if you

  • Have already had treatment with methotrexate unless it was for a non cancerous condition and you finished treatment at least 5 years before you were diagnosed with cancer
  • Have had any other cancer in the last 10 years apart from non melanoma skin cancer or carcinoma of the cervix and the trial doctor thinks this could affect you taking part in this trial (If you have Lynch syndrome, you may be able to take part if you have had other cancers - the doctors will advise you on this)
  • Have had radiotherapy to a single area of cancer (a lesion) that the researchers will be measuring in this trial, unless the lesion has got bigger since you had radiotherapy
  • Have another medical condition that cannot be controlled with medication
  • Are pregnant or breastfeeding

Trial design

This phase 2 trial will recruit 56 people. Everybody taking part will have methotrexate.

You have methotrexate as an injection into a vein. The treatment only takes a few minutes. You have another injection a week later and then 2 weeks without any treatment. Each 3 week period is called a cycle of treatment. You have up to 6 cycles of treatment. But if the treatment is helping you, your doctor may talk to you about having it for longer.

During the trial, the researchers will take samples of blood, urine and a hair follicle (such as from an eyebrow). And they will get a sample of the tissue taken when you had surgery to remove your cancer or when you had a biopsy Open a glossary item.

The researchers will use the samples to try to find substances they can measure in the body to help them tell how well the treatment is working. They call these substances biomarkers Open a glossary item. And they will use the blood samples to look at your genes Open a glossary item. This is to learn more about how genetic changes can lead to cancer and whether certain changes affect how people respond to treatment.

The trial team may also ask your permission to take an extra biopsy during treatment. This is to learn more about what effect the treatment has on the genetic make up of your cancer. If you don’t want to have this extra biopsy, you don’t have to. You can still take part in the trial.

All samples will be stored safely and may be used in the future, but only for research purposes.

You will be asked to fill out a questionnaire before you start treatment, just before the 2nd and 4th cycle of chemotherapy, and every 3 months for a year after you finish treatment. The questionnaire will ask about any side effects you have had and how you have been feeling. This is called a quality of life study.

The trial team will also ask you to fill out a short questionnaire which asks about other members of your family who have had cancer.

People taking part in this trial may also be asked to join extra studies looking at PET scans and MRI scans. Doctors want to find out if these scans can provide more information about bowel cancer with a faulty MSH2 gene.

You may be able to take part in one or both of these studies. Whether or not you are asked to take part will depend on where you are having your treatment and also where in your body the cancer is.

Hospital visits

You will see the doctors and have some tests before you start treatment. The tests include

  • Physical examination
  • Blood tests
  • CT scan
  • Chest X-ray
  • Heart trace (ECG Open a glossary item)

You go to hospital twice in each 3 week cycle of treatment. You have regular blood tests. And after 9 weeks of treatment you have a CT scan to check that your cancer has not got any bigger. If the scan shows the cancer has grown, you will stop having the trial treatment and the doctors will discuss other treatment options with you. If the cancer has stayed the same size or got smaller, you will have the next 3 cycles of treatment and then another CT scan.

After you finish treatment you will see the trial doctors and have a CT scan every 3 months for up to 1 year.

If you do take part in the MRI or PET scan study (or both), you will have extra scans

  • Before you start treatment
  • After 2 weeks of treatment
  • When you finish treatment

Having an MRI scan takes about 15 to 30 minutes. If you have PET scans, you have an injection of a small amount of a radioactive drug first. Then you have to wait an hour before having the scan. The scan itself can take up to an hour.

Side effects

The side effects of methotrexate include

We have more information about the side effects of methotrexate.

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

Professor David Cunningham

Supported by

Institute of Cancer Research (ICR)
The Royal Marsden NHS Foundation Trust

Questions about cancer? Contact our information nurses

Freephone 0808 800 4040

Last review date

CRUK internal database number:

Oracle 2695

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

Wendy took part in a new trial studying the possible side effect of hearing loss

A picture of Wendy

"I was delighted to take part in a clinical trial as it has the potential to really help others in the future.”

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