Terwijn M, Feller N, van Rhenen A, Kelder A, Westra G, Zweegman S, Ossenkoppele G, Schuurhuis GJ. Interleukin-2 receptor alpha-chain (CD25) expression on leukaemic blasts is predictive for outcome and level of residual disease in AML.
Eur J Cancer 2009;
45:1692-9. [PMID:
19321337 DOI:
10.1016/j.ejca.2009.02.021]
[Citation(s) in RCA: 53] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2008] [Revised: 02/18/2009] [Accepted: 02/23/2009] [Indexed: 12/21/2022]
Abstract
We investigated the role of CD25 as a prognostic marker in acute myeloid leukaemia (AML). Seventy-two newly diagnosed patients < or =60 years were retrospectively analysed by flow cytometry for CD25 positivity of AML blasts. Patients with CD25 expression of >10%, when compared to < or =10%, had a significantly shorter overall survival (OS, p=0.0005) and relapse-free survival (RFS, p=0.005). In multivariate analysis CD25 expression is an independent adverse factor for OS and RFS. High CD25 combined with FLT3-ITD positivity resulted in the poorest OS and RFS (p=0.001 and p=0.003, respectively). CD25 expression remained prognostic within the intermediate cytogenetic risk group. In addition, after the first cycle of chemotherapy, a significantly higher MRD frequency was found in patients expressing CD25 above cut-off (p=0.003). Our results show that CD25 expression is an independent adverse prognostic marker in AML patients < or =60 and correlates with MRD.
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