An antibody-drug conjugate for lymphoma
Polatuzumab vedotin
A targeted cancer medicine given into a vein for certain lymphomas, delivering chemotherapy directly to cancer cells.
What is Polatuzumab vedotin?
Polatuzumab vedotin is a specialist targeted cancer medicine used to treat some types of lymphoma, a cancer of certain white blood cells. It is an antibody-drug conjugate, meaning an antibody that homes in on a marker called CD79b on lymphoma cells is joined to a chemotherapy drug, so the chemotherapy is delivered mainly to the cancer cells. It is given as a drip into a vein, usually alongside other cancer treatments. The main risks are nerve damage (numbness, tingling and weakness), falling blood counts, serious infections and, rarely, a serious brain infection called PML. It is used under specialist cancer supervision.
Education and reference only. This is a plain-language guide to Polatuzumab vedotin — it deliberately contains no doses. Doses depend on the person, the brand and the reason for treatment, and belong with your prescriber. Always check the BNF, the product labelling (SmPC) and follow medical advice.
What it is
Polatuzumab vedotin is a targeted cancer medicine used to treat certain types of lymphoma, which are cancers of particular white blood cells. It is what is known as an antibody-drug conjugate: an antibody that recognises a marker called CD79b on the surface of lymphoma cells is linked to a powerful chemotherapy drug. This design aims to carry the chemotherapy directly to the cancer cells and limit how much reaches healthy tissue. It is given as an infusion into a vein, usually together with other cancer treatments, under the care of a specialist team.
How it works
The antibody part of polatuzumab vedotin seeks out and attaches to CD79b, a marker found on the surface of many lymphoma cells. Once attached, the cancer cell takes the whole molecule inside, where the chemotherapy drug is released to disrupt the cell's internal scaffolding so it can no longer divide, causing the cell to die. By delivering the chemotherapy mainly to cells carrying the marker, the aim is to hit the cancer hard while sparing more healthy tissue. It is given in cycles, usually combined with other cancer medicines for a stronger effect.
Company & origin
Originated / developed by: Specialist manufacturer.
A specialist targeted cancer medicine used in the UK to treat certain types of lymphoma, usually given with other cancer treatments.
Practical use
How to take Polatuzumab vedotin
General, dose-free guidance — always follow your prescriber's and the leaflet's specific instructions.
- It is given as a drip into a vein by your cancer team, usually in cycles and often with other cancer medicines.
- Report numbness, tingling, burning or weakness in your hands or feet early, as the dose may need changing.
- Treat any fever or sign of infection as an emergency and contact your team without delay.
- Report new confusion, weakness, or problems with vision or balance straight away, as these need urgent assessment.
- Use effective contraception as advised, because this medicine can harm a developing baby.
Weighing it up
Advantages & disadvantages of Polatuzumab vedotin
Advantages
- A targeted treatment that delivers chemotherapy mainly to lymphoma cells carrying the CD79b marker.
- An effective option for certain lymphomas, usually combined with other cancer treatments.
- Aims to spare healthy tissue compared with chemotherapy that is not targeted.
Disadvantages
- Commonly causes nerve damage with numbness, tingling and weakness, which can persist.
- Lowers blood counts, raising the chance of serious infections, bruising and bleeding.
- Given as an infusion, and rarely linked to a serious brain infection called PML.
Practical use
Good to know
The most distinctive side effect is nerve damage (peripheral neuropathy): numbness, tingling, pins and needles, burning or weakness, usually starting in the hands and feet, which you should report early because the dose may need adjusting to stop it getting worse. It lowers blood counts, especially infection-fighting white cells, so a fever or any sign of infection should be treated as an emergency, and bruising or bleeding from low platelets can occur. Serious infections are an important risk. When a lot of cancer cells are destroyed quickly, the breakdown products can upset the body's chemistry (tumour lysis syndrome), so you may be given fluids and other measures around treatment. Rarely, a serious brain infection called PML can occur, so report new confusion, weakness, vision or balance problems. As with cancer treatment of this kind, it can harm a developing baby, so effective contraception is important.
Who should not take it / use with caution
- People who have had a serious allergic reaction to polatuzumab vedotin should not receive it.
- It is used with care in people who already have significant nerve problems or very low blood counts.
- It can harm a developing baby, so it is avoided in pregnancy and effective contraception is needed.
Monitoring
- Regular blood tests to check blood counts before treatment.
- Watching for nerve symptoms, signs of infection and infusion reactions.
- Checking the body's chemistry around treatment for tumour lysis, and staying alert for signs of PML.
Side effects
- Nerve problems such as numbness, tingling, burning or weakness in the hands and feet.
- A drop in blood counts, raising the chance of infection, tiredness, bruising and bleeding.
- Serious infections, infusion reactions, nausea and diarrhoea.
- Rarely but seriously, tumour lysis syndrome or a serious brain infection (PML) needing urgent care.
Key interactions
- Other treatments that lower blood counts can deepen the drop, so they are combined with care.
- Some medicines change how the chemotherapy part is broken down, so a full medicines list is important.
- Live vaccines are generally avoided during treatment because the immune system is weakened.
Available as: A powder made up into a solution and given as a drip into a vein.
Answers
Polatuzumab vedotin: frequently asked questions
What is polatuzumab vedotin used for?
It is a targeted cancer medicine used to treat certain types of lymphoma, usually given together with other cancer treatments.
How does an antibody-drug conjugate work?
An antibody homes in on a marker called CD79b on lymphoma cells and carries a chemotherapy drug to them, so the chemotherapy is delivered mainly to the cancer cells.
Why might my hands and feet feel numb?
It can cause nerve damage leading to numbness, tingling, burning or weakness; report this early, as the dose may need to be adjusted.
What is PML?
PML is a rare but serious brain infection; report new confusion, weakness, or problems with vision or balance straight away so it can be assessed urgently.
Why are infections a concern?
It lowers the white blood cells that fight infection, so a fever or any sign of infection should be treated as an emergency.
Authoritative sources
- BNF
- NICE CKS
Building a medicines information resource?
We create evidence-led, dose-free drug and formulary references for teams.