Table 2

Thrombin generation parameters

−APC
+APC
Lag time, minutesETP, nM · minPeak, nMPeak time, minutesLag time, minutesETP, nM · minPeak, nMPeak time, minutes
Controls 1.93 ± 0.34 821 ± 118 248 ± 34 3.78 ± 0.47 2.30 ± 0.35 211 ± 102 61 ± 30 4.29 ± 0.57 
ET 1.94 ± 0.33 760 ± 177* 242 ± 54 3.63 ± 0.43 2.31 ± 0.37 286 ± 152 81 ± 45 4.31 ± 0.59 
    Negative (n = 29) 1.96 ± 0.31 800 ± 168 249 ± 58 3.71 ± 0.4 2.34 ± 0.39 255 ± 150 72 ± 48 4.39 ± 0.63 
    Heterozygous (n = 30) 1.91 ± 0.35 716 ± 179 236 ± 49 3.56 ± 0.46* 2.29 ± 0.35 316 ± 150 89 ± 42 4.23 ± 0.57 
PV 1.88 ± 0.36 725 ± 166 235 ± 51 3.53 ± 0.58* 2.24 ± 0.45 311 ± 214 92 ± 62 4.15 ± 0.59 
    Negative (n = 3) 2.01 ± 0.08 856 ± 288 274 ± 84 3.70 ± 0.01 2.26 ± 0.25 375 ± 202 110 ± 104 4.22 ± 0.18 
    Heterozygous (n = 17) 1.87 ± 0.42 727 ± 88 228 ± 41 3.61 ± 0.73* 2.20 ± 0.46 273 ± 199 82 ± 60 4.14 ± 0.67 
    Homozygous (n = 10) 1.85 ± 0.32 684 ± 217 236 ± 56 3.38 ± 0.40 2.30 ± 0.51 352 ± 202 103 ± 55 4.14 ± 0.55 
−APC
+APC
Lag time, minutesETP, nM · minPeak, nMPeak time, minutesLag time, minutesETP, nM · minPeak, nMPeak time, minutes
Controls 1.93 ± 0.34 821 ± 118 248 ± 34 3.78 ± 0.47 2.30 ± 0.35 211 ± 102 61 ± 30 4.29 ± 0.57 
ET 1.94 ± 0.33 760 ± 177* 242 ± 54 3.63 ± 0.43 2.31 ± 0.37 286 ± 152 81 ± 45 4.31 ± 0.59 
    Negative (n = 29) 1.96 ± 0.31 800 ± 168 249 ± 58 3.71 ± 0.4 2.34 ± 0.39 255 ± 150 72 ± 48 4.39 ± 0.63 
    Heterozygous (n = 30) 1.91 ± 0.35 716 ± 179 236 ± 49 3.56 ± 0.46* 2.29 ± 0.35 316 ± 150 89 ± 42 4.23 ± 0.57 
PV 1.88 ± 0.36 725 ± 166 235 ± 51 3.53 ± 0.58* 2.24 ± 0.45 311 ± 214 92 ± 62 4.15 ± 0.59 
    Negative (n = 3) 2.01 ± 0.08 856 ± 288 274 ± 84 3.70 ± 0.01 2.26 ± 0.25 375 ± 202 110 ± 104 4.22 ± 0.18 
    Heterozygous (n = 17) 1.87 ± 0.42 727 ± 88 228 ± 41 3.61 ± 0.73* 2.20 ± 0.46 273 ± 199 82 ± 60 4.14 ± 0.67 
    Homozygous (n = 10) 1.85 ± 0.32 684 ± 217 236 ± 56 3.38 ± 0.40 2.30 ± 0.51 352 ± 202 103 ± 55 4.14 ± 0.55 

The results (mean ± SD) obtained in the absence and presence of APC are shown according to disease type (ET or PV) and JAK2V617F mutational status.

*

P < .05 versus controls.

P < .01 versus controls.

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