Among patients with dengue, PPV and MFI were negatively correlated with molecules associated with endothelial activation, including VCAM-1 (partial correlations, −0.45 for PPV and −0.46 for MFI; both P < .001) and Ang-2 (partial correlations, −0.33 and −0.29, respectively; both P = .001). This evidence concerns the gene VCAM1 and dengue disease.