The present invention relates to novel crystalline polymorphic and amorphous form of 6-[2-(methylcarbamoyl)phenylsulfanyl]-3-E-[2-(pyridin-2-yl)ethenyl]indazole and to methods for their preparation. The invention is also directed to pharmaceutical compositions containing at least one polymorphic form and to the therapeutic or prophylactic use of such polymorphic forms and compositions.