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Kymriah 1.2 × 106 – 6 × 108 cells dispersion for infusion – patient leaflet, side effects, dosage

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Prescription only (POM) ▼ Additional monitoring Key facts
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Patient leaflet - Kymriah 1.2 x 10^6 - 6 x 10^8 Cells Dispersion for infusion

1. What Kymriah is and what it is used for What Kymriah is

Kymriah, also known as tisagenlecleucel, is made from some of your own white blood cells called T cells. T cells are important for your immune system (the body’s defences) to work properly.

How does Kymriah work?

The T cells are taken from your blood and a new gene is put into the T cells so that they can target the cancer cells in your body. When Kymriah is infused into your blood, the modified T cells will find and kill the cancer cells.

What Kymriah is used for

Kymriah is used to treat:

  • B‑cell acute lymphoblastic leukaemia (B‑cell

    ALL) - a form of cancer that affects some other types of white blood cells. The medicine can be used in children and young adults up to and including 25 years of age with this cancer when it did not respond to previous treatment, has come back two or more times, or has come back after a transplant of stem cells.

  • Diffuse large B‑cell lymphoma (DLBCL) - a form

    of cancer that affects some types of white blood cells, mostly in the lymph nodes. The medicine can be used in adults (18 years of age or older) with this cancer when it has come back or did not respond after two or more previous treatments.

  • Follicular lymphoma (FL) - a form of cancer that

    affects some types of white blood cells, called lymphocytes, mostly in the lymph nodes. The medicine can be used in adults (18 years of age or older) with this cancer when it has come back or did not respond after two or more previous treatments. If you have any questions about how Kymriah works or why this medicine has been prescribed for you, ask your doctor.

2. What you need to know before you are given Kymriah

You should not be given Kymriah:

  • if you are allergic to any of the ingredients of this

    medicine (listed in section 6). If you think you may be allergic, ask your doctor for advice.

    • If you cannot receive treatment, called

      lymphodepleting chemotherapy, which reduces the number of white blood cells in your blood. Warnings and precautions

Kymriah is made from your own white blood cells and should only be given to you.

Patients treated with Kymriah may develop new types of cancers. There have been reports of patients developing cancer, beginning in a type of white blood cells called T-cells, after treatment with Kymriah and similar medicines. Talk to your doctor if you experience any new swelling of your glands (lymph nodes) or changes in your skin such as new rashes or lumps. You will be asked to enrol in a registry for at least 15 years in order to better understand the long-term effects of Kymriah.

Before you are given Kymriah you should tell your doctor if:

  • You have had a stem cell transplant in the last

    4 months. Your doctor will check if you have signs or symptoms of graft-versus-host disease. This happens when transplanted cells attack your body, causing symptoms such as rash, nausea, vomiting, diarrhoea and bloody stools.

  • You have any lung, heart or blood pressure (low or

    raised) problems.

  • You notice the symptoms of your cancer are

    getting worse. If you have leukaemia this might include fever, feeling weak, bleeding gums, bruising. If you have lymphoma, this might include unexplained fever, feeling weak, night sweats, sudden weight loss.

  • You have an infection. The infection will be treated

    before the Kymriah infusion.

  • You have had hepatitis B, hepatitis C or human

    immunodeficiency virus (HIV) infection.

  • You are pregnant, think you may be pregnant, or

    plan to become pregnant (see sections “Pregnancy and breast-feeding” and “Contraception for women and men” below).

  • You had a vaccination in the previous 6 weeks or

    are planning to have one in the next few months. If any of the above apply to you (or you are not sure), talk to your doctor before being given Kymriah. Test and checks

Before you are given Kymriah your doctor will:

  • Check your lungs, heart and blood pressure.
  • Look for signs of infection; any infection will be

    treated before you are given Kymriah.

  • Check if your lymphoma or leukaemia is

    getting worse.

  • Look for signs of graft-versus-host disease that

    can happen after a transplant.

  • Check your blood for uric acid and for how

    many cancer cells there are in your blood. This will show if you are likely to develop a condition called tumour lysis syndrome. You may be given medicines to help prevent the condition.

  • Check for hepatitis B, hepatitis C or HIV infection. After you have been given Kymriah

Tell your doctor or nurse immediately if you have any of the following:

  • Fever, which may be a symptom of an infection.

    Your doctor will regularly check your blood counts as the number of blood cells and other blood components may decrease.

  • Take your temperature twice a day for 3-4 weeks

    after treatment with Kymriah. If your temperature is high, see your doctor immediately.

  • Altered or decreased consciousness, delirium,

    anxiety, dizziness, tremor, headache, confusion, agitation, seizures, difficulty speaking and understanding, and/or loss of balance. This is usually within the first 8 weeks after the infusion, but it can be after too. These may be symptoms of a condition called immune effector cell-associated neurotoxicity syndrome (ICANS).

    • Extreme tiredness, weakness and shortness of

      breath, which may be symptoms of a lack of red blood cells.

    • Bleeding or bruising more easily, which may be

      symptoms of low levels of cells in the blood known as platelets.

There may be an effect on the results of some types of HIV test – ask your doctor about this.

Your doctor will regularly monitor your blood counts after you receive Kymriah as you may experience a reduction in the number of blood cells and other blood components.

Do not donate blood, organs, tissues or cells. Children and adolescents

  • There is limited experience with Kymriah in

    paediatric patients below the age of 3 years.

  • Kymriah is not recommended to be used in

    children and adolescents below 18 years of age to treat DLBCL. This is because there is limited experience in the treatment of non-Hodgkin lymphoma in this age group.

  • Kymriah should not be used in children and

    adolescents below 18 years of age to treat FL. This is because Kymriah has not been studied in this age group.

Other medicines and Kymriah

Tell your doctor if you are taking, have recently taken or might take any other medicines, including medicines obtained without a prescription. This is because other medicines can affect the way Kymriah works. In particular, you must not be given certain vaccines called live vaccines:

  • in the 6 weeks before you are given the short

    course of chemotherapy (called lymphodepleting chemotherapy) to prepare your body for the Kymriah cells.

  • during Kymriah treatment.
  • after treatment while the immune system

    is recovering.

Talk to your doctor if you need to have any vaccinations. Before you are given Kymriah tell your doctor or nurse if you are taking any medicines that weaken your immune system such as corticosteroids, since these medicines may interfere with the effect of Kymriah. Pregnancy and breast‑feeding

If you are pregnant or breast-feeding, think you may be pregnant or are planning to have a baby, ask your doctor for advice before being given this medicine. This is because the effects of Kymriah in pregnant or breast-feeding women are not known, and it may harm your unborn baby or your newborn/infant.

  • If you become pregnant or think you may be

    pregnant after treatment with Kymriah, talk to your doctor immediately.

  • You will be given a pregnancy test before

    treatment starts. Kymriah should only be given if the result shows you are not pregnant. Contraception for women and men

Discuss pregnancy with your doctor if you have received Kymriah.

Driving and using machines

Some people may feel confused, have problems such as altered or decreased consciousness, confusion and seizures (fits) after being given Kymriah. Therefore, do not drive, use machines, or take part in activities that need you to be alert for in the 8 weeks following infusion.

Kymriah contains sodium, dimethyl sulfoxide (DMSO), dextran 40 and potassium

This medicine contains 24.3 to 121.5 mg sodium (main component of cooking/table salt) in each dose. This is equivalent to 1 to 6% of the recommended maximum daily dietary intake of sodium for an adult. This medicine contains dextran 40 and DMSO (substances used to preserve frozen cells), both of which can sometimes cause difficulty breathing and/or dizziness (possible symptoms of serious allergic or hypersensitivity reactions). You should be observed closely during the infusion period. This medicine contains potassium, less than 1 mmol (39 mg) per dose, i.e. essentially “potassium-free”.

3. How Kymriah is given

Kymriah will always be given to you by a doctor in a qualified treatment centre.

Giving blood to make Kymriah

Kymriah is made from your own white blood cells.

  • Your doctor will take some of your blood using

    a catheter placed in your vein (a procedure called leukapheresis). Some of your white blood cells are separated from your blood and the rest of your blood is returned to your vein. This can take 3 to 6 hours and may need to be repeated.

  • Your white blood cells are frozen and sent

    away to make Kymriah. It usually takes about 3 to 4 weeks to make Kymriah but the time may vary.

  • Kymriah is a treatment that is manufactured

    specifically for you.

  • Before you are given Kymriah, your doctor

    may give you a type of treatment called lymphodepleting chemotherapy for a few days to prepare your body.

Cancer treatment while Kymriah is being made

During the period while Kymriah is being made, your lymphoma or leukaemia may get worse and your doctor may decide to use an additional treatment (known as “bridging therapy”) to stabilise your cancer by stopping new cancer cells from developing. This treatment may lead to side effects and these may be severe or life-threatening. Your doctor will inform you of the potential side effects of this treatment. Other medicines given immediately before Kymriah treatment

During the 30 to 60 minutes before you are given Kymriah you may be given other medicines. This is to help prevent infusion reactions and fever. These other medicines may include:

  • Paracetamol
  • An antihistamine such as diphenhydramine. How Kymriah is given
  • Your doctor will check that the individual patient

    identifiers on the Kymriah infusion bag match up to you.

  • Your doctor will give you Kymriah by infusion,

    which means it will be given as a drip through a tube in your vein. This usually takes less than 1 hour. During the infusion your doctor will check if you have difficulty breathing or dizziness (possible symptoms of an allergic reaction).

  • Kymriah is a one-time treatment.

After Kymriah is given

  • Plan to stay within 2 hours’ travel from the hospital

    where you were treated for at least 4 weeks after you have been given Kymriah. During the first week after treatment, your doctor may recommend that you return 2 to 3 times, or more frequently, to the hospital. This is so your doctor can check if your treatment is working and help you if you have any side effects.

If you miss an appointment

If you miss an appointment, call your doctor or the hospital as soon as possible to reschedule.

4. Possible side effects

Like all medicines, this medicine can cause side effects, although not everybody gets them. Tell your doctor immediately if you get any of the following side effects after the Kymriah infusion. They usually happen in the first 8 weeks after the infusion, but can also develop later:

Very common: may affect more than 1 in 10 people

  • high fever and chills. These may be symptoms

    of a serious condition called cytokine release syndrome which may be life-threatening or fatal. Other symptoms of cytokine release syndrome are difficulty breathing, nausea, vomiting, diarrhoea, loss of appetite, fatigue, muscle pain, joint pain, swelling, low blood pressure, fast heartbeat, headache, heart, lung and kidney failure and liver injury. These symptoms almost always occur within the first 14 days after treatment with Kymriah, but in some patients can also develop later.

    • problems such as altered thinking or decreased

      consciousness, loss of contact with reality, confusion, agitation, seizures, difficulty speaking and understanding speech, difficulty walking. These may be symptoms of a condition called immune effector cell-associated neurotoxicity syndrome (ICANS). These symptoms mostly occur within the first 8 weeks after treatment with Kymriah, but in some patients can also develop later.

    • feeling warm, fever, chills or shivering, sore throat

      or mouth ulcers may be signs of an infection. Some infections may be life-threatening or fatal. Common: may affect up to 1 in 10 people

    • Rapid breakdown of tumour cells causing release

      of their contents into the bloodstream. This can interfere with the workings of various body organs, especially the kidneys, heart and nervous system (tumour lysis syndrome).

Other possible side effects

Other side effects are listed below. If these side effects become severe or serious, tell your doctor immediately. Very common (may affect more than 1 in 10 people)

  • Pale skin, weakness, breathlessness due to low

    number of red blood cells or low haemoglobin

  • Excessive or prolonged bleeding or bruising due

    to low number of platelets

  • Fever with dangerously low white blood cell count
  • Increased risk of infection due to abnormally low

    number of white blood cells

  • Frequent and persistent infections due

    to decreased antibodies in your blood

  • Weakness, abnormal heart rhythms, due

    to abnormally low level of blood salts including phosphorus, potassium

  • High levels of liver enzymes or creatinine in the

    blood that show that your liver or kidneys are not working normally

  • Raised blood pressure
  • Shortness of breath, laboured breathing, rapid

    breathing

  • Cough
  • Abdominal pain, constipation
  • Bone and back pain
  • Skin rash
  • Swollen ankles, limbs and face

Common (may affect up to 1 in 10 people)

  • Fever, malaise, enlarged liver, yellow colour of your

    skin and eyes, low blood cell counts due to severe immune activation

  • Dizziness or fainting, flushing, rash, itching, fever,

    shortness of breath or vomiting, abdominal pain, diarrhoea due to infusion-related reaction

  • Rash, nausea, vomiting, diarrhoea including bloody

    stools (possible symptoms of graft-versus-host disease which is when transplanted cells attack your cells)

  • Pain in the joints due to high level of uric acid
  • Abnormal blood test results (high level of:

    phosphorus, potassium, calcium and sodium, fibrin d-dimer, serum ferritin; low level of: blood protein called albumin, sodium, magnesium)

  • Convulsion, fits (seizures)
  • Muscle spasms/cramping due to abnormally low

    level of blood salts including calcium

  • Involuntary or uncontrollable movements
  • Involuntary shaking of the body, difficulty writing,

    difficulty expressing thoughts verbally, impaired attention, sleepiness

  • Tingling or numbness, difficulty moving because of

    nerve damage

  • Decreased vision
  • Thirst, low urine output, dark urine, dry flushed

    skin, irritability (possible symptoms of high level of sugar in blood)

  • Weight loss
  • Nerve pain
  • Anxiety, irritability
  • Severe state of confusion
  • Difficulty sleeping
  • Breathlessness, difficulty breathing when lying

    down, swelling of the feet or legs (possible symptoms of heart failure), fast or irregular heart beat, stopped heart beat

    • Swelling and pain due to blood clots
    • Swelling due to fluids leaking from blood vessels

      into the surrounding tissue

    • Bloating and discomfort (abdominal distension),

      due to an accumulation of fluid in the abdomen

    • Dry mouth, sore mouth, bleeding in the mouth
    • Yellow skin and eyes due to abnormally high levels

      of bilirubin in the blood

    • Itching
    • Excessive sweating, night sweats
    • Flu-like illness
    • Failure of multiple organs
    • Fluid in the lungs
    • Stuffy nose
    • Defect in blood clotting (coagulopathy, increased

      international normalised ratio, prolonged prothrombin time, decreased blood fibrinogen, prolonged activated partial thromboplastin time) Uncommon (may affect up to 1 in 100 people)

    • Abnormal blood test results (high level of magnesium)
    • Weakness or paralysis of limbs or face, difficulty

      speaking (possible symptoms of stroke as a result of reduced blood supply)

    • Warm or rapidly reddening skin
    • Cough that produces phlegm or sometimes blood,

      fever, shortness of breath or difficulty breathing

    • Difficulty in controlling movement

Rare (may affect up to 1 in 1 000 people)

  • A new type of cancer beginning in a type of white

    blood cells called T-cells (secondary malignancy of T-cell origin)

Not known (frequency cannot be estimated from the available data)

  • Difficulty breathing or dizziness (possible

    symptoms of an allergic reaction)

  • Weakness or numbness in the arms or legs, worsening

    of or loss of vision, having fixed and irrational thoughts that are not shared by others, headache, impaired memory or thinking, unusual behaviour

Reporting of side effects

If you get any side effects, talk to your doctor. This includes any possible side effects not listed in this leaflet. You can also report side effects directly via the Yellow Card Scheme: Website:

www.mhra.gov.uk/yellowcard or search for MHRA Yellow Card in the Google Play or Apple App Store. By reporting side effects, you can help provide more information on the safety of this medicine.

5. How to store Kymriah

The following information is intended for doctors only. Keep this medicine out of the sight and reach of children. Do not use this medicine after the expiry date which is stated on the infusion bag label after EXP. Store and transport ≤ -120°C. Do not thaw the product until it is ready to be used.

Do not use this medicine if the infusion bag is damaged or leaking.

6. Contents of the pack and other information

What Kymriah contains

  • The active substance is tisagenlecleucel. Each

    infusion bag of Kymriah contains tisagenlecleucel cell dispersion at a batch-dependent concentration of autologous T cells genetically modified to express an anti-CD19 chimeric antigen receptor (CAR-positive viable T cells). 1 or more bags contain a total of 1.2 × 106 – 6 × 108 CAR+ viable T cells.

  • The other ingredients are glucose, sodium

    chloride, human albumin solution, dextran 40 for injection, dimethyl sulfoxide, sodium gluconate, sodium acetate, potassium chloride, magnesium chloride, sodium-N-acetyltryptophanate, sodium caprylate, aluminium, and water for injections. See section 2, “Kymriah contains sodium, dimethyl sulfoxide (DMSO), dextran 40 and potassium”. This medicine contains cells of human origin. What Kymriah looks like and contents of the pack

Kymriah is a cell dispersion for infusion. It is supplied as an infusion bag containing a cloudy to clear, colourless to slightly yellow dispersion of cells. Each bag contains 10 mL to 50 mL of dispersion.

Marketing Authorisation Holder and Manufacturer

Novartis Pharmaceuticals UK Limited

2nd Floor, The WestWorks Building

White City Place

195 Wood Lane

London W12 7FQ

This leaflet was last revised in 06/2025. The following information is intended for healthcare professionals only:

Precautions to be taken before handling or administering the medicinal product

Kymriah should be transported within the facility in closed, break-proof, leak-proof containers. This medicinal product contains human blood cells. Healthcare professionals handling Kymriah must take appropriate precautions (wearing gloves and eye protection) to avoid potential transmission of infectious diseases.

Preparation prior to administration

Before administration, it must be confirmed that the patient’s identity matches the unique patient information on the Kymriah infusion bags and accompanying documentation. The total number of infusion bags to be administered should also be confirmed with the patient-specific information on the batch-specific documentation accompanying the medicinal product.

The timing of thaw of Kymriah and infusion should be coordinated. The infusion start time should be confirmed in advance and adjusted for thaw so that Kymriah is available for infusion when the recipient is ready. Once Kymriah has been thawed and is at room temperature (20°C-25°C), it should be infused within 30 minutes to maintain maximum product viability, including any interruption during the infusion. Inspection and thawing of the infusion bag(s) Do not thaw the product until it is ready to be used. The infusion bag should be placed inside a second sterile bag during thawing to protect ports from contamination and avoid spills in the unlikely event of the bag leaking. Kymriah should be thawed at 37°C using either a water bath or dry thaw method until there is no visible ice in the infusion bag. The bag should be removed immediately from the thawing device and kept at room temperature (20°C-25°C) until infusion. If more than one infusion bag has been received for the treatment dose (refer to the batch certificate for number of bags constituting one dose), the next bag should only be thawed after the contents of the preceding bag have been infused. Kymriah should not be manipulated. For example, Kymriah should not be washed (spun down and resuspended in new media) prior to infusion. The infusion bag(s) should be examined for any breaks or cracks prior to thawing. If the infusion bag appears to have been damaged or to be leaking, it should not be infused and should be disposed of according to local guidelines on handling of biological waste.

Administration

Kymriah intravenous infusion should be administered by a healthcare professional experienced with immunosuppressed patients and prepared to manage anaphylaxis. In the event of cytokine release syndrome (CRS), ensure that at least one dose of tocilizumab per patient and emergency equipment are available prior to infusion. Hospitals must have access to additional doses of tocilizumab within 8 hours.

The patient’s identity should be matched with the patient identifiers on the infusion bag. Kymriah is intended solely for autologous use and must not, under any circumstances, be administered to other patients.

Kymriah should be administered as an intravenous infusion using latex-free intravenous tubing without a leukocyte depleting filter, at approximately 10 to 20 mL per minute by gravity flow. All contents of the infusion bag(s) should be infused. Sterile sodium

chloride 9 mg/mL (0.9%) solution for injection should be used to prime the tubing prior to infusion and rinse it after infusion. When the full volume of Kymriah has been infused, the infusion bag should be rinsed with 10 to 30 mL sodium chloride 9 mg/mL (0.9%) solution for injection by back priming to ensure as many cells as possible are infused into the patient.

If the volume of Kymriah to be administered is ≤20 mL, intravenous push may be used as an alternative method of administration

Measures to take in case of accidental exposure In case of accidental exposure local guidelines on handling of human-derived material should be followed. Work surfaces and materials which have potentially been in contact with Kymriah must be decontaminated with appropriate disinfectant. Precautions to be taken for the disposal of the medicinal product

Unused medicinal product and all material that has been in contact with Kymriah (solid and liquid waste) should be handled and disposed of as potentially infectious waste in accordance with local guidelines on handling of human-derived material.

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About this document

Source: MHRA - Medicines and Healthcare products Regulatory Agency (products.mhra.gov.uk) · Marketing authorisation: PLGB 00101/1101

MHRA data as of 13 October 2026

What the sections and the side effect frequencies mean: How to read a patient leaflet

Found a mistake? Tell us on the contact page.

The information on this site does not replace the advice of a doctor or pharmacist.

Facts about Kymriah 1.2 x 10^6 - 6 x 10^8 Cells Dispersion for infusion

What these facts mean

Prescription needed?? Yes, prescription-only medicine (POM)
Active substance? Tisagenlecleucel
Is it available?? Listed as available (NHS Dictionary of Medicines and Devices – not a record of current supplies)
Drug group (ATC)?
  1. L Antineoplastic and immunomodulating agents
    1. L01 Antineoplastic agents
      1. L01X Other antineoplastic agents
        1. L01XX Other antineoplastic agents
          1. L01XX71 tisagenlecleucel
Additional monitoring? Yes ▼ – it is being monitored particularly closely for safety. Report any side effect to the Yellow Card scheme.
Marketing authorisation? PLGB 00101/1101

Sources: the MHRA product information (products.mhra.gov.uk) and the NHS Dictionary of Medicines and Devices (dm+d), release 11.0.0 of 2 November 2026, NHS Business Services Authority. Contains public sector information licensed under the Open Government Licence v3.0.