Treatment

Targeted cancer drugs and immunotherapy for pancreatic cancer

Targeted cancer drugs target the differences in cancer cells that help them to grow and survive. Other drugs help the immune system to attack the cancer. They are called immunotherapies.

When you have targeted cancer drugs or immunotherapy

You might have one of these treatments if the cancer has a gene change (mutation). Or if it has a certain protein that helps the cancer grow. Doctors test the cancer to find out if it has any of these changes. Knowing this helps them recommend the best treatment for you.

Testing the cancer to see what treatment is best for you is a type of personalised medicine.

Find out more about personalised medicine

Tests on the pancreatic cancer cells

Your doctor might check the cancer for changes to a gene called neurotrophic tyrosine receptor kinase (NTRK).

They may also test the cancer for other changes to genes including:

  • ​ or ​​ genes

  • genes called RAS

  • genes involved in ​​ repair

They usually test a sample of the pancreatic cancer tissue (biopsy) from when you were first diagnosed. Or from the cancer if you had an operation to remove it.

The results of the test may show whether a targeted cancer drug is suitable for you. Unfortunately, only some people with pancreatic cancer that has certain gene changes or proteins may benefit from these treatments.

You also have to be quite fit and well to have some of these cancer drugs.

NTRK gene change

Your doctor may recommend a targeted cancer drug called larotrectinib (Vitrakvi) if:

  • the pancreatic cancer has an NTRK gene change

  • the cancer is locally advanced or metastatic

  • there are no other treatment options

In Scotland they may recommend entrectinib (Rozlytrek) instead. This is also a targeted cancer drug.

How do you have larotrectinib and entrectinib?

Larotrectinib is a capsule or liquid that you swallow. You take it twice a day. Entrectinib is capsules that you swallow. You take them once a day.

You have these medicines for as long as the treatment is working. And you are not getting too many side effects.

We have information about these drugs on our cancer drugs A to Z list.

Go to the cancer drugs A to Z list

Other gene changes and proteins

If there are other proteins or gene changes in the pancreatic cancer, your doctor will talk with you about which is the best treatment. Which treatment you have depends on a number of factors. But it may be a targeted cancer drug or an immunotherapy. This may be as part of a clinical trial.

Side effects

Targeted cancer drugs and immunotherapy can cause different side effects. Some of these can be serious. Your doctor or nurse will talk to you about this.

Everyone is different and side effects can vary from person to person. The side effects you may have depend on:

  • which cancer drugs you have

  • whether you have it alone or with other drugs

  • the amount of the drug you have (the dose)

  • your general health

A side effect may get better or worse during the course of your treatment. Or more side effects may develop as the treatment goes on.

Immunotherapy may cause inflammation in different parts of the body. This can cause serious side effects. They can happen during treatment, or some months after treatment has finished. In some people, these side effects could be life threatening.

Your doctor, nurse or pharmacist give you advice about the drugs you are taking and tell you what to look out for.

They will give you a telephone number to call urgently if you think you have any side effects. They can advise you and give you medicines to help with some of the effects.

Always tell your doctor or nurse about any side effects you have and follow the advice they give you.

Read more about the side effects of cancer drugs

Research into targeted and immunotherapy drugs for pancreatic cancer

Researchers are trying to find new and better treatments for pancreatic cancer. This includes learning more about the genes and proteins of individual cancers. They hope to develop more targeted drugs and immunotherapies for cancers with certain proteins or gene changes.

They are looking at using these drugs on their own or combined with other treatments.

New treatments are tested in clinical trials, so ask your doctor if there are any trials suitable for you

Find out more about the research into pancreatic cancer

Last reviewed: 17 Aug 2026

Next review due: 17 Aug 2029

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