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. 2013 Feb 19;8(2):e56714. doi: 10.1371/journal.pone.0056714

Table 5. Nodes in combination with molecular characterization improve DFS modeling.

Population Modulator Modulation time, minutes Antibody Metric P Model* P Node P MolChar P interaction term
Leukemic§ FLT3L 10 p-S6 log2 fold 0.027 0.090 0.191 0.025
FLT3L 15 p-S6 log2 fold 0.007 0.059 0.242 0.012
G-CSF 15 p-STAT3 log2 fold 0.108 0.158 0.681 0.054
PMA 15 p-ERK log2 fold 0.023 0.083 0.134 0.021
PMA 15 p-S6 log2 fold 0.003 0.015 0.096 0.002
SCF 15 p-S6 log2 fold 0.038 0.195 0.519 0.042
Leukemic AraC+Dauno 1440 CD34 Uu 0.004 0.008 0.006 0.001
AraC+Dauno 1440 cPARP Uu 0.018 0.032 0.012 0.006
AraC+Dauno 1440 p-Chk2 Uu 0.068 0.055 0.029 0.019
Etopo 1440 cPARP Uu 0.030 0.045 0.018 0.009
Etopo 1440 p-Chk2 Uu 0.132 0.098 0.057 0.042

The table displays the p-values for the models (P Model) as well as the components: node (P Node), molecular characterization (P MolChar), and the interaction term (P interaction term).

p-S6 indicates phosphorylated S6 ribosomal protein; G.CSF, granulocyte colony-stimulating factor; p-STAT3, phosphorylated signal transducer and activator of transcription 3; PMA, phorbol myristate acetate; p-ERK, phosphorylated endoplasmic reticulum kinase; SCF, Skp, Cullin, and F-box containing complex; CD34, cluster of differentiation 34; cPARP, cleaved poly(ADP-ribose) polymerase; and p-Chk2, phosphorylated checkpoint 2 protein kinase.

Sample size n = 39 for each row

*

Wald test used.

t-test (H0:Slope = 0). Significant p-value suggests influence of model component on hazard ratio.

Log of hazard ratio fit of MolChar plus node with interaction term using Cox Proportional -hazards regression: log h(t) = β01*FLT3 ITD+β2*node+β2*node*FLT3 ITD.

§

Signaling examined in non-apoptotic Leukemic cells (cPARP negative).

Interaction term included in model to evaluate simultaneous influence of MolChar and node on hazard ratio.