A trial of selumetinib with chemotherapy for advanced biliary tract cancers (ABC 04)

Cancer type:

Bile duct cancer
Biliary tree cancers
Gallbladder cancer




Phase 1

This trial looked at a drug called selumetinib with chemotherapy for cancer of the bile duct or gallbladder (the biliary tract). Cancer Research UK supported this trial.

More about this trial

Bile duct cancers and gallbladder cancer are known as biliary tract cancers. It is called advanced biliary tract cancer if

  • it can’t be removed by surgery
  • it comes back after surgery
  • it spreads to another part of the body

Chemotherapy is used to treat advanced biliary tract cancer. Cisplatin and gemcitabine are the 2 drugs most often used. 

Selumetinib is a type of biological therapy called a MEK inhibitor Open a glossary item. MEK is a body protein that sends signals to cells telling them to divide and grow. Selumetinib blocks MEK and may stop or slow down the growth of cancer cells.

The aims of this study were to

  • find the best dose of selumetinib to have with chemotherapy for advanced biliary tract cancer
  • learn more about the side effects

Summary of results

The team found the best dose of selumetinib to give with cisplatin and gemcitabine for biliary tract cancers. 

This was a phase 1 trial

At the start 3 people had 75mg of selumetinib with their chemotherapy. As they didn’t have any serious side effects another 3 people were started on this dose. This continued until 12 people had this dose of selumetinib with chemotherapy. 

Of the 12 people only 1 person had a side effect serious enough to stop selumetinib or reduce the dose. The side effect was chest pain. 

Other side effects included 

  • a drop in blood cells causing an increased risk of infection, bruising and bleeding
  • tiredness 
  • infection
  • rash
  • feeling or being sick
  • constipation or diarrhoea
  • swelling
  • a change to how the liver works
  • pain

The trial team concluded that 75mg of selumetinib twice a day was the best dose to give. 

Other studies are now being done. These are to find substances in the body (biomarkers) that could be used to predict how well people might respond to this combination of treatment.   

We have based this summary on information from the research team. The information they sent us has been reviewed by independent specialists (peer reviewed Open a glossary item) and published in a medical journal. The figures we quote above were provided by the trial team who did the research. We have not analysed the data ourselves.

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 John Bridgewater

Supported by

Cancer Research UK
Experimental Cancer Medicine Centre (ECMC)
NIHR Clinical Research Network: Cancer
University College London (UCL)


Other information

This is Cancer Research UK trial number CRUKE/10/036

Questions about cancer? Contact our information nurses

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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