# Tsukasaki 2009 response criteria (adult T-cell leukaemia-lymphoma)

Source: https://onco.cc/terms/tsukasaki-atl-response/  
OnCo record `tsukasaki-atl-response` (Term). Data CC BY-NC 4.0, attribute "Data from OnCo (onco.cc)"; commercial use needs a licence.

## TL;DR

These consensus criteria define response in adult T-cell leukaemia-lymphoma, a cancer caused by the HTLV-1 virus, combining the rules used for lymphoma and for chronic lymphocytic leukaemia.

## Summary

Adult T-cell leukaemia-lymphoma, caused by HTLV-1, is subclassified as acute, lymphoma, chronic or smouldering; the chronic and smouldering types are usually watched until they progress. A consensus meeting (Tsukasaki and colleagues, Journal of Clinical Oncology 2009) defined prognostic factors, subclassification and treatment strategies, and proposed response criteria specific to the disease, combining those for lymphoma and for CLL.

## Fields

- Kind: Term
- Last checked: 2026-11-04
- Also known as: Tsukasaki criteria; ATL response criteria

## Sources

- Tsukasaki et al., Definition, prognostic factors, treatment, and response criteria of adult T-cell leukemia-lymphoma (J Clin Oncol 2009): https://doi.org/10.1200/jco.2008.18.2428

## Connected records

- terms: [Complete response (CR) and partial response (PR)](https://onco.cc/terms/complete-response-term/), [iwCLL 2018 guidelines and response criteria](https://onco.cc/terms/iwcll-2018/), [Lugano classification / Ann Arbor staging](https://onco.cc/terms/lugano-classification/)
- cancers: [Adult T-cell leukaemia/lymphoma](https://onco.cc/cancers/adult-t-cell-leukaemia-lymphoma/)

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