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This information is about adult T-cell acute lymphoblastic leukaemia (T-ALL).

We have separate information on B-cell acute lymphoblastic leukaemia.

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What is T-cell acute lymphoblastic leukaemia (T-ALL)?

Find out more about T-cell acute lymphoblastic leukaemia including who gets it and what affects prognosis.
A man on the floor, leaning his elbows on the top of his bed, with one hand placed on the top of his head, looking despondent.

T-ALL symptoms and tests

Find out some of the most common symptoms of T-cell acute lymphoblastic leukaemia (T-ALL), a fast-growing type of blood cancer. Learn about the tests and scans often used to diagnose T-ALL.
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Treatment for T-cell acute lymphoblastic leukaemia (T-ALL)

Find out about how treatment for T-cell acute lymphoblastic leukaemia (T-ALL) is planned and the different types of treatments used.
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Living well with blood cancer

Read our information about living well with blood cancer. We've created guides on eating well and staying active, as well as your rights and work and where to turn for emotional support.

Last full review June 2026. Next full review due June 2029. We may make factual updates between reviews.

Thank you to Consultant Haematologist Professor Adele Fielding for checking the clinical accuracy of our T-ALL information.