A trial of MK-8242 for advanced solid tumours

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

Cancer type:

All cancer types




Phase 1

This trial is looking at a drug called MK-8242 for people who have a solid tumour for which there is no other treatment available. A solid tumour Open a glossary item is any type of cancer other than leukaemia Open a glossary item or lymphoma Open a glossary item

Some genes help to stop cancer cells growing. They are called tumour suppressor genes. P53 Open a glossary item is an important tumour suppressor gene.

A protein called HDM2 stops p53 working. The drug being looked at in this trial blocks HDM2. This allows p53 to work and stops the growth of cancer cells. The drug is called MK-8242.

In some cancers, the p53 gene is abnormal. But in order for MK-8242 to work, it is important that the p53 gene in the cancer cells is normal. The first few people joining this trial will not have their cancer’s p53 gene tested. But people joining the trial later can only take part if tests show that their tumour has a normal p53 gene. Researchers can check this by looking at a sample of the tumour.

The aims of the trial are to

  • Find the highest dose of MK-8242 you can safely have
  • Learn more about how the drug works and what happens to it in your body
  • See what effect MK-8242 has on solid tumours with a normal p53 gene

Who can enter

You may be able to join this trial if all of the following apply. You

  • Have a solid tumour Open a glossary item that is advanced Open a glossary item and for which there is no other standard treatment Open a glossary item available
  • Have at least one area of cancer that has not been treated with radiotherapy and can be seen and measured on a scan
  • Are well enough to carry out all your normal activities, apart from heavy physical work (performance status of 0 or 1)
  • Have satisfactory blood test results
  • Are at least 18 years old
  • Agree to use 2 forms of reliable contraception during the trial and for 2 months afterwards if there is any chance you or your partner could become pregnant

Apart from the first few people joining the trial, you must give permission for the trial team to get a sample of your tumour and tests must show that the cancer cells have a normal p53 gene.

If you have prostate cancer, and have not had an operation to remove your testicles (an orchidectomy), you must continue to have hormone injections to lower the amount of testosterone Open a glossary item in your body.

You cannot enter this trial if you

  • Have cancer that has spread to your brain or spinal cord (your central nervous system)
  • Have had chemotherapy or another experimental drug in the last 4 weeks
  • Have had radiotherapy in the last 2 weeks
  • Have started taking drugs called bisphosphonates in the last month, or have changed the dose in that time if you’ve been taking them for longer
  • Have not recovered from the side effects of other treatment unless they are very mild (apart from hair loss)
  • Are known to be very sensitive to MK-8242 or anything in it
  • Have had a heart attack in the last year or have certain other heart problems – the trial team can advise you about this
  • Have an infection that needs treating or any other medical condition that the trial doctors think could affect you taking part
  • Are hepatitis B, hepatitis C or HIV positive
  • Have taken medication that affects substances called cytochrome P (CYP) enzymes in the last week – your doctor can advise you about this
  • Are pregnant or breastfeeding

Trial design

This is a phase 1 trial. It will recruit 136 people. Everybody taking part will have MK-8242 in capsules that you swallow.

There are 2 parts to the trial. In the 1st part, the researchers are looking for the highest safe dose of MK-8242. The 2nd part is to learn more about the side effects and how tumours with a normal p53 gene respond to the drug.

The first few patients taking part will have low doses of the trial drug. If they don’t have any serious side effects, the next few patients will have a higher dose. And so on, until they find the best dose of MK-8242 to give. This is called a dose escalation study.

Everybody joining the 2nd part of the trial has the highest safe dose found in part 1.

You take MK-8242 every day for a week, followed by 2 weeks without any treatment. Each 3 week period is called a cycle of treatment. The trial team will tell you exactly how and when to take the capsules. You keep a diary at home to note down when you take them.

As long as you don’t have bad side effects, you can carry on taking MK-8242 for as long as it helps you.

The trial team may ask you to have more biopsies Open a glossary item during treatment to see what effect the drug is having. You don’t have to have these biopsies if you don’t want to. You can still take part in the trial.

Hospital visits

You see the trial team and have some tests before you start the trial treatment. The tests include

  • Physical examination
  • Heart trace (ECG Open a glossary item)
  • Blood tests
  • Urine tests
  • CT scan

If you have prostate cancer, you also have a bone scan and PSA tests.

You go to hospital 4 times in the first cycle of treatment. You may need to stay in hospital overnight on a couple of occasions if you live a long distance from the Hospital.

You go to hospital 3 times in both the 2nd and 3rd cycles of treatment. After that, you go twice in each treatment cycle.

You have blood tests at each hospital visit. You have a CT scan every 9 weeks. Men with prostate cancer also have a bone scan every 9 weeks.

When you finish treatment, you see the trial team again a month later.

Side effects

As MK-8242 is a new drug, there may be side effects we don’t know about yet. In an earlier small trial, the side effects included

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 Udai Banerji

Supported by

Experimental Cancer Medicine Centre (ECMC)
Sharp & Dohme

Questions about cancer? Contact our information nurses

Freephone 0808 800 4040

Last review date

CRUK internal database number:

Oracle 9883

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

Over 60,000 cancer patients enrolled on clinical trials in the UK last year.

Last reviewed:

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