Table 3.

Univariate and multivariable overall survival analysis of 75 patients with blast phase myeloproliferative neoplasms

VariablesUnivariate analysisMultivariable analysis
HR95% CIPHR95% CIP
Age, y   .05    
Age >65 y 1.5 0.9-2.4 .09    
Male sex 1.3 0.8-2.1 .3    
Transfusion-dependent; “N” evaluable = 71 (95%) .14 0.8-2.4 .1    
Hemoglobin, g/dL; “N” evaluable = 69 (92%)   .5    
Platelets, × 109/L; “N” evaluable = 69 (92%)   .4    
Platelets < 100 × 109/L; “N” evaluable = 69 (92%) 1.5 0.9-2.5 .09    
Leukocytes, × 109/L; “N” evaluable = 69 (92%)   .2    
Leukocytes > 25 × 109/L; “N” evaluable = 69 (92%) 1.4 0.8-2.3 .2    
Circulating blasts %; “N” evaluable = 70 (93%)   .8    
Circulating blasts ≥20%; “N” evaluable = 70 (93%) 0.9 0.6-1.7 .9    
BM blasts; “N” evaluable = 61 (81%)   .8    
BM blasts ≥20%; “N” evaluable = 61 (81%) 1.0 0.5-2.1 .9    
MPN variant       
 Post-PMF AML 0.9 0.5-1.7 .8 
 Post-ET AML 0.9 0.4-1.7 .7 
 Post-PV AML (reference) — — — 
Karyotype; “N” evaluable = 62 (83%)       
 Very high-risk karyotype 1.8 0.9-3.6 .07 
 Unfavorable karyotype 1.2 0.6-2.3 .6 
 Favorable karyotype (reference) — — — 
RUNX1 mutated 2.1 1.1-3.8 .02 2.9 1.5-5.5 <.001 
PTPN11 mutated 3.0 1.2-7.0 .01    
Received transplant or achieved CR/CRi 0.3 0.2-0.6 <.001 0.3 0.2-0.5 <.001 
VariablesUnivariate analysisMultivariable analysis
HR95% CIPHR95% CIP
Age, y   .05    
Age >65 y 1.5 0.9-2.4 .09    
Male sex 1.3 0.8-2.1 .3    
Transfusion-dependent; “N” evaluable = 71 (95%) .14 0.8-2.4 .1    
Hemoglobin, g/dL; “N” evaluable = 69 (92%)   .5    
Platelets, × 109/L; “N” evaluable = 69 (92%)   .4    
Platelets < 100 × 109/L; “N” evaluable = 69 (92%) 1.5 0.9-2.5 .09    
Leukocytes, × 109/L; “N” evaluable = 69 (92%)   .2    
Leukocytes > 25 × 109/L; “N” evaluable = 69 (92%) 1.4 0.8-2.3 .2    
Circulating blasts %; “N” evaluable = 70 (93%)   .8    
Circulating blasts ≥20%; “N” evaluable = 70 (93%) 0.9 0.6-1.7 .9    
BM blasts; “N” evaluable = 61 (81%)   .8    
BM blasts ≥20%; “N” evaluable = 61 (81%) 1.0 0.5-2.1 .9    
MPN variant       
 Post-PMF AML 0.9 0.5-1.7 .8 
 Post-ET AML 0.9 0.4-1.7 .7 
 Post-PV AML (reference) — — — 
Karyotype; “N” evaluable = 62 (83%)       
 Very high-risk karyotype 1.8 0.9-3.6 .07 
 Unfavorable karyotype 1.2 0.6-2.3 .6 
 Favorable karyotype (reference) — — — 
RUNX1 mutated 2.1 1.1-3.8 .02 2.9 1.5-5.5 <.001 
PTPN11 mutated 3.0 1.2-7.0 .01    
Received transplant or achieved CR/CRi 0.3 0.2-0.6 <.001 0.3 0.2-0.5 <.001 

Bold indicates significant values.

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