Inotuzumab ozogamicin (Besponsa)

Inotuzumab ozogamicin is a type of targeted cancer drug.

You pronounce inotuzumab ozogamicin as in-oh-too-zoo-mab oh-zoh-ga-my-sin. It's often called inotuzumab for short.

It is a treatment for a type of acute lymphoblastic leukaemia (ALL) called B cell precursor ALL. You might have it if the leukaemia has come back (relapsed) or not responded to treatment (refractory).

Find out more about ALL

How you have inotuzumab?

You have inotuzumab as a drip into your bloodstream (intravenously).

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

• portacath

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. You have a new cannula each time you have treatment.

Find out about having a central line

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:

Increased risk of infection 

Increased risk of getting an infection is due to a drop in white blood cells. Symptoms include a change in temperature, aching muscles, headaches, feeling cold and shivery and generally unwell. You might have other symptoms depending on where the infection is.

Infections can sometimes be life threatening. You could develop a serious reaction to an infection (​sepsis​ ). You should contact your advice line urgently if you think you have an infection. 

Bruising and bleeding 

You may have bruising and bleeding. This is due to a drop in the number of ​platelets​ in your blood. These blood cells help the blood to clot when we cut ourselves.

You may have nosebleeds or blood in your poo. You may have heavy bleeding, or bleeding that you can’t stop from an injury. Call your advice line if you have any unusual bleeding. If you are losing a lot of blood call 999 or go straight to Accident and Emergency (A&E).

Your healthcare team will regularly check the level of platelets with blood tests. They will go through which symptoms to look out for and when to contact someone.

Breathlessness and looking pale

You might be breathless and look pale due to a drop in red blood cells. This is called anaemia.

Loss of appetite

You might lose your appetite for various reasons while having cancer treatment. Sickness, taste changes or tiredness can put you off food and drinks.

Headaches

Tell your healthcare team if you keep getting headaches. They can give you painkillers to help. 

Tummy (abdominal) pain 

Tell your doctor or nurse if you have this. They can check for the cause of the pain and give you medicine to help. 

Feeling or being sick

Feeling or being sick is usually well controlled with anti sickness medicines. It might help to avoid fatty or fried foods, eat small meals and snacks and take regular sips of water. Relaxation techniques might also 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 treat it once it has started.

Diarrhoea or constipation 

Tell your healthcare team if you have diarrhoea or constipation. They can give you medicine to help. 

Sore mouth 

Mouth sores and ulcers can be painful. It helps to keep your mouth and teeth clean, drink plenty of fluids and avoid acidic foods such as lemons. Chewing gum can help to keep your mouth moist. Tell your doctor or nurse if you have ulcers.

Liver changes

You might have high levels of a substance called bilirubin in the blood or changes to the levels of liver enzymes. This can cause jaundice. You might have yellowing of the skin or whites of the eyes.

Less commonly you might also have small blockages in the blood vessels going into and inside the liver. Symptoms of this include loss of appetite, feeling or being sick, diarrhoea, dark coloured urine, light coloured poo, tummy pain, yellowing skin or eyes, feeling generally unwell, rapid weight gain or fluid build up causing swelling.

You have regular blood tests to check for any changes in the way your liver is working.

High temperature

Tell your healthcare team straightaway if you get a high temperature. Ask them if you can take paracetamol to help lower your temperature.

Fatigue

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.

Allergic reaction 

A reaction may happen during the infusion, causing a skin rash, itching, swelling of the lips, face or throat, breathing difficulties, fever and chills. Tell your nurse or doctor immediately if at any time you feel unwell. They can give you medicine to help.

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:

• high levels of chemicals in your blood due to the breakdown of tumour cells - you will have regular blood tests to check for this

• high levels of uric acid in the blood that might cause kidney changes and swollen joints (gout)

• a build up of fluid in your tummy (ascites) or swelling of your tummy

• changes to your heart rhythm usually picked up on an electrocardiogram (ECG) – tell your nurse or doctor if you feel lightheaded or dizzy

• high levels of enzymes called amylase and lipase in the blood. They help to digest food. You have regular blood tests to check this

What else do I need to know?

Other medicines, foods and drink 

Cancer drugs can interact with medicines, herbal products, and some food and drinks. We are unable to list all the possible interactions that may happen. An example is grapefruit or grapefruit juice which can increase the side effects of certain drugs.

Tell your healthcare team about any medicines you are taking. This includes vitamins, herbal supplements and over the counter remedies. Also let them know about any other medical conditions or allergies you may have.

Pregnancy and contraception

This treatment might harm a baby developing in the womb. It is important not to become pregnant or get someone pregnant while you are having treatment.

Women must not become pregnant for at least 8 months after the end of treatment. Men should not get someone pregnant for at least 5 months after treatment. 

Talk to your doctor or nurse about effective contraception before starting treatment. Let them know straight away if you or your partner become pregnant while having treatment.

Loss of fertility 

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.

Breastfeeding

Don’t breastfeed during this treatment and for 2 months afterwards. The drug may come through in the breast milk.

Treatment for other conditions

If you are having tests or treatment for anything else, always mention your cancer treatment. For example, if you are visiting your dentist.

Immunisations 

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, and yellow fever.

You can usually 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 a vaccine in relation to your cancer treatment.

Contact with others who have had immunisations 

You can be in contact with other people who have had live vaccines as injections. If someone has had a live vaccine by mouth or nasal spray there may be a small risk the vaccine virus can be passed onto you if your ​immune system​ is weakened.

Your healthcare team will let you know if you need to take any precautions if you are in close contact with someone who has had a live vaccine.

Read more about immunisations and cancer treatment