The short answer
Yescarta (Axicabtagene ciloleucel) is a type of immunotherapy called CAR T-cell therapy. A person's own T cells are re-engineered in a lab to target a marker (CD19) on lymphoma cells, then infused back to seek out and destroy the cancer. It is used to help treat some large B-cell lymphomas, and some follicular lymphomas, that have come back or not responded to other treatment, and is usually given as a one-time infusion of your own modified immune cells. Like all cancer medicines it can cause side effects; this page explains the common ones and the warning signs to report. It is educational only and not a substitute for your care team's advice.
Yescarta is the brand name; its generic name is axicabtagene ciloleucel.
It is a type of immunotherapy called CAR T-cell therapy — a person's own T cells are re-engineered in a lab to target a marker (CD19) on lymphoma cells, then infused back to seek out and destroy the cancer.
It is used to help treat some large B-cell lymphomas, and some follicular lymphomas, that have come back or not responded to other treatment.
It is usually given as a one-time infusion of your own modified immune cells.
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The full explanation.
One infusion, made from your own T cells
Yescarta is the brand name. Axicabtagene ciloleucel is the generic name. It is a CAR T-cell treatment. Your own T cells are collected from your blood in a procedure called leukapheresis. A lab then adds a receptor that recognises CD19, a marker carried by B-cell lymphoma cells. The changed cells are grown, frozen and shipped back to your hospital. The number of cells in the bag is calculated from your body weight by the manufacturer and checked by the treatment center — a target the label fixes, not a figure anyone at home acts on.
Making the cells takes weeks. During that wait you may have bridging treatment to hold the lymphoma steady. In the days just before the infusion you have a short course of two chemotherapy drugs, which clears space for the new cells; the center schedules it to end as the cells arrive. The infusion itself runs in under 30 minutes.
Who the label covers
For large B-cell lymphoma in adults, there are two situations. One is lymphoma that did not respond to first-line chemoimmunotherapy, or that came back within 12 months of it. The other is lymphoma that has returned or not responded after two or more lines of treatment. That group includes diffuse large B-cell lymphoma, primary mediastinal large B-cell lymphoma, high-grade B-cell lymphoma, and large B-cell lymphoma that grew out of follicular lymphoma.
A third use covers follicular lymphoma after two or more lines of treatment. That one holds accelerated approval, granted on how many tumors shrank. It stays on the label only if later trials confirm a real benefit.
The boxed warning
Three things sit in the boxed warning.
- Cytokine release syndrome. The new cells release chemical signals in a rush. Fever comes first. Low blood pressure, a racing heart and trouble breathing can follow. It can be fatal. Tocilizumab is kept ready to treat it, sometimes with steroids.
- Neurologic toxicity. Confusion, tremor, trouble finding words, deep sleepiness or seizures. This can happen alongside the fever, or after the fever has settled. It can also be fatal.
- Second blood cancers. T-cell cancers have occurred after CD19-directed and BCMA-directed CAR T treatments, including this one.
Why a fever here is not a wait-and-see problem
You will be checked at least once a day for the first 7 days. After that, a fever still counts as urgent. So does new confusion, slurred speech, shaking, or trouble writing your own name. Call the treating team the moment it starts, day or night. Do not treat it at home with paracetamol and rest. Carry the wallet card your team gives you and show it to any clinician who sees you.
Staying close to the treatment center
The label's floor — verified against the current prescribing information on DailyMed — is to stay within reach of the hospital for at least 2 weeks after the infusion and not to drive for at least 2 weeks. Your treatment center may set longer periods; treat its written numbers as the ones that apply to you. Have an adult with you who can notice changes you might miss in yourself.
Follow-up in the months after
Blood counts often stay low for weeks. Antibody levels can fall, which raises the risk of infection, and some people need immunoglobulin replacement. Live vaccines are not advised around this treatment. Blood tests carry on long after you feel well again. The maker asks to be told if a second cancer is ever diagnosed, so tell your team if that happens.
When to get help sooner
- Call 911 or go to an emergency department if you have a seizure, cannot be roused properly, or your breathing becomes hard work. Tell the crew you have had CAR T-cell therapy and show your wallet card.
- Call 911 or go to an emergency department if your temperature reaches 100.4°F (38°C) or higher, or if you get new confusion, tremor, slurred or muddled speech, or trouble writing your own name. Fever is the usual first sign of cytokine release syndrome here, and it needs assessment within the hour, not a wait for morning. Phone the treating team on the way. A racing heart or light-headedness on standing belongs in the same group, because blood pressure can drop quickly.
- Call the treating team within a day or two if you pick up an infection that would normally be minor, since antibody levels can stay low for months after the infusion.
Sources
https://dailymed.nlm.nih.gov/dailymed/drugInfo.cfm?setid=9b70606e-b99c-4272-a0f1-b5523cce0c59
https://www.cancer.gov/about-cancer/treatment/drugs/axicabtageneciloleucel
Words to know
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Common questions
What is Yescarta?
Yescarta (Axicabtagene ciloleucel) is a type of immunotherapy called CAR T-cell therapy. A person's own T cells are re-engineered in a lab to target a marker (CD19) on lymphoma cells, then infused back to seek out and destroy the cancer. It is used to help treat some large B-cell lymphomas, and some follicular lymphomas, that have come back or not responded to other treatment.
How is Yescarta given?
It is usually given as a one-time infusion of your own modified immune cells. T cells are collected, modified, and returned as a single infusion after a short course of chemotherapy. Close monitoring follows, often in the hospital. The exact schedule is set by your care team.
What are the common side effects of Yescarta?
Commonly reported side effects include fever, low blood pressure, tiredness, low blood counts, and confusion. Not everyone gets them, and many can be managed. Tell your care team about anything new or worsening.
Does Yescarta cure cancer?
That depends on the person, the cancer type, and its stage. For some people a medicine like this can control cancer for a long time or be part of a curative plan; for others the goal is to slow the cancer or ease symptoms. Your care team can explain the goal in your situation.
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Sources last checked: 2026-07-14 what this meansLast updated: 2026-08-21Next planned review: 2027-01-14
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How this page was created
Cancer Explained does not originate medical claims. Every page restates guidance already published by the National Cancer Institute, the CDC, the USPSTF and the FDA, in plain language, with the source cited so you can check the original yourself. AI does the translating and organizing; automated checks test claims, citations, clarity and safety before anything publishes. We do not employ clinicians and do not intend to — our work is translation and navigation, not clinical judgment. Nothing here is personal medical advice, and no page can account for your particular situation.
Editorial status: Editorial review complete — This page completed Cancer Explained's editorial checks (sources, safety, plain language, duplication). It has not been reviewed by a physician or other healthcare professional.
Human medical review: not completed. Pages here are not signed off by a clinician before they publish. That is not an oversight we are quietly working around: we restate published guidance and cite it, so the authority belongs to the source rather than to us, and every page names where its claims come from — you can verify us instead of trusting us. Where a volunteer clinician has reviewed a page, their name and credentials appear on it; where no name appears, no clinician has checked it. We are glad to have reviewers and are recruiting them, and we do not hold pages back waiting for one. Use this site to understand your situation and to ask better questions of the people treating you.
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