Cytokines

Cytokines are a group of proteins that occur naturally in the body. They play an important role in our immune system Open a glossary item. Interferon and interleukin are types of cytokines found in the body.

The man made version of interleukin is called aldesleukin.

How do cytokine drugs work?

These drugs are a type of immunotherapy Open a glossary item because they work by boosting our immune system.

In cancer treatment cytokine drugs work by making the cancer cells more visible to our immune system. This encourages our immune system to then attack the cancer. 

Peginterferon to treat blood cancers

Peginterferon is a possible treatment for a group of blood cancers called myeloproliferative neoplasms Open a glossary item. This includes polycythaemia vera (PV) and essential thrombocythaemia (ET).

These cancers cause the bone marrow Open a glossary item to make more blood cells Open a glossary item than the body needs. This can lead to problems like blood clots or a swollen (enlarged) spleen Open a glossary item.

Treatment with peginterferon helps to reduce the spleens size and the number of blood cells the bone marrow is producing.

The video below shows you how to give an injection just under your skin (subcutaneously).

Aldesleukin

Aldesleukin is also called Interleukin 2, IL2 or Proleukin.

In cancer care, doctors use it most often to treat kidney cancer. It is also in clinical trials for some other types of cancer.

You are most likely to have it as an injection just under the skin (subcutaneously). But you may have it into a vein, either as an injection or through a drip.

How often you have this drug depends on which cancer you have.

Side effects of interferon and aldesleukin

The side effects of interferon and aldesleukin include:

  • a drop in blood cells causing an increased risk of infection, bleeding problems, tiredness and breathlessness
  • flu-like symptoms
  • diarrhoea
  • tiredness and weakness (fatigue)
  • feeling sick
  • loss of appetite

Aldesleukin can also cause low blood pressure.

Talk to your medical team or GP about your side effects. They may be able to suggest ways or prescribe medicines to treat them.

For more information about the side effects of your treatment, go to the individual drug pages.

  • Electronic Medicines Compendium 
    Accessed February 2021

  • Cancer: Principles and Practice of Oncology (10th edition)
    VT De Vita, TS Lawrence and SA Rosenberg
    Lippincott, Williams and Wilkins, 2015

  • Immunotherapy for metastatic renal cell carcinoma
    S Unverzagt and others
    Cochrane Database Syst Review, 2017. Volume 15, Issue 5

  • Recognizing and managing on toxicities in cancer immunotherapy
    L.Yang and others
    Tumour Biology, 2017. Volume 39, Issue 3, 

  • Cytokines in the Treatment of Cancer
    K Conlon and others
    J Interferon Cytokine Res. 2019 Jan 1; 39(1): 6–21

Last reviewed: 
19 May 2021
Next review due: 
15 May 2024

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