Monosomal karyotype improves IPSS-R stratification in MDS and AML patients treated with Azacitidine

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Abstract

IPSS-R classifies cytogenetic abnormalities into five prognostic groups for survival. Monosomal karyotype (MK) is not a subgroup of IPSS-R. Additional prognostic information from MK in poor and very poor karyotype has been recently shown. The aim of our study was to determine the prognostic value of IPSS-R and MK for response and survival in AZA-treated high-risk MDS and AML with 20-30% of blasts patients. The study population included 154 patients who were classified according to IPSS-R. IPSS-R was not predictive of response (intermediate, 64%; poor, 44%; very poor, 56%; P=0.28) or survival (intermediate, 25 months; poor, 12 months; very poor, 11 months; P=0.14). Twenty-one patients (15%) presented with MK and had a median OS of 9 months. Patients with a very high IPSS-R score without MK had a median OS of 15 months, while patients with a high IPSS-R score without MK had a median OS of 13 months (P=0.18). We reclassified patients into the following three groups to include MK status: very high (MK only; OS median: 9 months), high (very high IPSS-R without MK and high IPSS-R without MK; OS median: 14 months) and intermediate (OS median: 25 months). As in recent publication including MK prognostic, we confirmed that this classification was predictive for survival in AZA treated patients (P=0.008). IPSS-R failed to discriminate between the prognostic subgroups. Stratification with MK has value in the prognosis of our cohort of AZA-treated patients. © 2013 Wiley Periodicals, Inc.

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Cluzeau, T., Mounier, N., Karsenti, J. M., Richez, V., Legros, L., Gastaud, L., … Cassuto, J. P. (2013). Monosomal karyotype improves IPSS-R stratification in MDS and AML patients treated with Azacitidine. American Journal of Hematology, 88(9), 780–783. https://doi.org/10.1002/ajh.23509

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