Abstract
Several studies have evaluated the prognostic value of the individual expression of certain genes in patients with myelodysplastic syndromes (MDS). However, none of them includes their simultaneous analysis by quantitative polymerase chain reaction (PCR). We evaluated relative expression levels of 14 molecular markers in 193 peripheral blood samples from untreated MDS patients using real-time PCR. Detectable WT1 expression levels, low TET2, and low IER3 gene expression were the only markers showing in univariate analysis a poor prognostic value for all treatment-free (TFS), progression-free (PFS), and overall survival (OS). In multivariate analysis, molecular parameters associated with a shorter TFS were: WT1 detection (p = 0.014), low TET2 (p = 0.002), and low IER3 expression (p = 0.025). WT1 detection (p = 0.006) and low TET2 (p = 0.006) expression were associated with a shorter PFS when multivariate analysis was carried out by including only molecular markers. Molecular values with an independent value in OS were: WT1 detection (p = 0.003), high EVI1 expression (p = 0.001), and undetectatable p15-CDKN2B (p = 0.037). WT1 expressers were associated with adverse clinical–biological features, high IPSS and WPSS scoring, and unfavorable molecular expression profile. In summary, detectable WT1 expression levels, and low TET2 and low IER3 expression in peripheral blood showed a strong association with adverse prognosis in MDS patients at diagnosis. However, WT1 was the only molecular marker displaying an independent prognostic value in both OS and TFS.
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Acknowledgments
The Spanish MDS Group (GESMD), provided samples and clinical information from patients participating in the INBIOMED HEMA-001/2006 project (sponsored by Celgene S.L., Madrid). This work has been partially supported by the grants PI061351 and 00/0023-00 from the Spanish “Fondo de Investigaciones Sanitarias de la Seguridad Social”, 89/A/06 from the “Gerencia Regional de Salud, Junta Castilla y León”, and CIC, IBMCC (USAL-CSIC), Spain.
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Clinical and biological characteristics of MDS patients at diagnosis according to WT1 expression levels (DOC 46 kb)
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Santamaría, C., Ramos, F., Puig, N. et al. Simultaneous analysis of the expression of 14 genes with individual prognostic value in myelodysplastic syndrome patients at diagnosis: WT1 detection in peripheral blood adversely affects survival. Ann Hematol 91, 1887–1895 (2012). https://doi.org/10.1007/s00277-012-1538-7
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DOI: https://doi.org/10.1007/s00277-012-1538-7