The present invention relates to methods of inhibiting TIE2 kinase useful in the treatment of tumor growth, invasiveness, intravasation, dissemination, metastasis, and immunosuppression. Specifically, the invention relates to methods of using 1-(3-tert-butyl-1-(quinolin-6-yl)-1Hpyrazol- 5-yl)-3-(2-fluoro-4-(2-(methylcarbamoyl)pyridin-4-yloxy)phenyl)urea and salts thereof of Formula I.