Atezolizumab is a type of immunotherapy drug.
This treatment is used for a number of different cancer types.
Depending on your situation you may have atezolizumab on its own or you might have it in combination with other drugs.
How atezolizumab works
Atezolizumab works by blocking a protein that stops the immune system from working properly and attacking cancer cells. It helps to make your immune system find and kill cancer cells.
How you have atezolizumab
You have atezolizumab as a drip into your bloodstream (intravenously).
The first time you have atezolizumab, you have it over an hour. If you don’t have a reaction to it you have your next infusions over 30 minutes.
Into your bloodstream
You might have treatment through a long plastic tube that goes into a large vein in your chest. The tube stays in place throughout the course of treatment. This can be a:
- central line
- PICC line
If you don't have a central line
You might have treatment through a thin short tube (a cannula) that goes into a vein in your arm each time you have treatment.
When you have atezolizumab
Your treatment plan depends on your type of cancer.
You usually have it in cycles of treatment. A cycle means that you have Atezolizumab on its own or in combination with other cancer drugs, and then have some time with no treatment to allow your body to recover.
Your doctor or nurse will tell you more about this.
You have blood tests before and during your treatment. They check your levels of blood cells and other substances in the blood. They also check how well your liver and kidneys are working.
How often and how severe the side effects are can vary from person to person. They also depend on what other treatment you are having. For example, your side effects could be worse if you are also having other drugs or radiotherapy.
When to contact your team
Your doctor or nurse will go through the possible side effects. They will monitor you closely during treatment and check how you are at your appointments. Contact your advice line as soon as possible if:
- you have severe side effects
- your side effects aren’t getting any better
- your side effects are getting worse
Early treatment can help manage side effects better.
We haven't listed all the side effects here. Remember it is very unlikely that you will have all of these side effects, but you might have some of them at the same time.
Common side effects
These side effects happen in more than 10 in 100 people (more than 10%). You might have one or more of them. They include:
High temperature (fever)
If you get a high temperature, let your health care team know straight away. Ask them if you can take paracetamol to help lower your temperature.
Loss of appetite
You might lose your appetite for various reasons when you are having cancer treatment. Sickness, taste changes or tiredness can put you off food and drinks.
You may have difficulty breathing with wheezing and coughing. Let your doctor or nurse know straight away if this happens.
Tiredness and weakness (fatigue) can happen during and after treatment - doing gentle exercises each day can keep your energy up. Don't push yourself, rest when you start to feel tired and ask others for help.
Diarrhoea and inflamed bowel
Tell your doctor or nurse if you have diarrhoea. Your doctor might give you anti diarrhoea medicine to take home with you after treatment. Eat less fibre, avoid raw fruits, fruit juice, cereals and vegetables, and drink plenty of liquid to replace the fluid lost.
Feeling or being sick
Feeling or being sick is usually well controlled with anti sickness medicines. Avoiding fatty or fried foods, eating small meals and snacks, drinking plenty of water, and relaxation techniques can all help.
It is important to take anti sickness medicines as prescribed even if you don’t feel sick. It is easier to prevent sickness rather than treating it once it has started.
You might notice skin changes, such as dryness, itching and rashes similar to acne on your face, neck and trunk.
Tell your doctor if you have any rashes or itching. Don't go swimming if you have a rash because the chlorine in the water can make it worse.
If your skin gets dry or itchy, using unperfumed moisturising cream may help. Check with your doctor or nurse before using any creams or lotions. Wear a high factor sun block if you’re going out in the sun.
Joint or back pain
You might have pain in your back or joints. Speak to your doctor or nurse about what painkillers you can take to help with this.
Urinary tract infections (UTIs)
Tell your doctor or nurse if you think you might have a urinary tract infection. You might find it difficult to pass urine, want to go with some urgency or are going more often. There may be pain or burning when you go. You may see blood in your urine, or your urine might smell bad or look cloudy.
Occasional side effects
These side effects happen in between 1 and 10 out of every 100 people (between 1 and 10%). You might have one or more of them. They include:
- changes in your blood tests showing low levels of potassium and sodium
- low blood pressure
- inflammation of your liver or lungs
- changes to the way your thyroid gland works – it may make too much or not enough thyroid hormone. You may have regular blood tests to check this
- flu-like symptoms
- allergic reaction to the drug that can cause a rash, shortness of breath, redness or swelling of the face and dizziness
- your nose may feel blocked (nasal congestion)
- difficulty in swallowing
- pain in your tummy (abdomen)
- low platelets which means you may bruise and bleed easily
- pain in your muscles or bones (musculoskeletal pain)
Rare side effects
These side effects happen in fewer than 1 in 100 people (fewer than 1%). You might have one or more of them. They include:
- inflammation of your pancreas - you might not have any symptoms but changes may be picked up on a blood test
- changes in blood sugar levels (diabetes)
- your adrenal glands not making enough important hormones (cortisol and aldosterone)
- inflammation of the heart or brain
- muscle weakness or numbness – go to A&E if you have any numbness or are unable to move
Coping with side effects
We have more information about side effects and tips on how to cope with them.
What else do I need to know?
Other medicines, foods and drink
Cancer drugs can interact with some other medicines and herbal products. Tell your doctor or pharmacist about any medicines you are taking. This includes vitamins, herbal supplements and over the counter remedies.
Pregnancy and contraception
This drug may harm a baby developing in the womb. It is important not to become pregnant while you are having treatment and for 5 months afterwards.
Talk to your doctor or nurse about effective contraception before starting treatment. Let them know straight away if you fall pregnant while you're having treatment.
Don’t breastfeed during this treatment because the drug may come through into your breast milk.
It is not known whether this treatment affects fertility in people. Talk to your doctor before starting treatment if you think you may want to have a baby in the future.
Treatment for other conditions
Always tell other doctors, nurses, pharmacists or dentists that you’re having this treatment if you need treatment for anything else, including teeth problems.
Don’t have immunisations with live vaccines while you’re having treatment and for up to 12 months afterwards. The length of time depends on the treatment you are having. Ask your doctor or pharmacist how long you should avoid live vaccinations.
In the UK, live vaccines include rubella, mumps, measles, BCG, yellow fever and one of the shingles vaccines called Zostavax.
You can have:
- other vaccines, but they might not give you as much protection as usual
- the flu vaccine (as an injection)
- the coronavirus (COVID-19) vaccine - talk to your doctor or pharmacist about the best time to have it in relation to your cancer treatment
Members of your household who are aged 5 years or over are also able to have the COVID-19 vaccine. This is to help lower your risk of getting COVID-19 while having cancer treatment and until your
Contact with others who have had immunisations - You can be in contact with other people who have had live vaccines as injections. Avoid close contact with people who have recently had live vaccines taken by mouth (oral vaccines) such as the oral typhoid vaccine.
If your immune system is severely weakened, you should avoid contact with children who have had the flu vaccine as a nasal spray as this is a live vaccine. This is for 2 weeks following their vaccination.
Babies have the live rotavirus vaccine. The virus is in the baby’s poo for about 2 weeks and could make you ill if your immunity is low. Get someone else to change their nappies during this time if you can. If this isn't possible, wash your hands well after changing their nappy.
More information about this treatment
For further information about this treatment go to the electronic Medicines Compendium (eMC) website.
You can report any side effect you have to the Medicines Health and Regulatory Authority (MHRA) as part of their Yellow Card Scheme.
This page is due for review. We will update this as soon as possible.