The present invention addresses methods and uses of quinoline derivatives in the treatment of tumours and pharmaceutical compositions for treatment of same. Specifically, the present invention involves a method and applications for the use of the quinoline derivative 1-[[[4-(4-fluoro-2-methyl-1H-indol-5-yl)oxy-6-methoxyquinolin-7-yl]oxy]methyl]cyclopropylamine in the treatment of soft tissue sarcomas and pharmaceutical compositions for treatment of same.