Therapeutic and prophylactic method for tumor treatable with endocrine therapy by combined use of fibroblast growth factor receptor inhibitor with endocrine therapy
Provided is a novel therapeutic method for a cancerous tumor treatable with endocrine therapy, said method comprising using an FGFR inhibitor (S)-1-(3-(4-amino-3-((3,5-dimethoxyphenyl)ethynyl)-1H-pyrazolo[3,4-d]pyrimidin-1-yl)pyrrolidin-1-yl)prop-2-en-1-on or a pharmaceutically acceptable salt thereof. Also provided are a pharmaceutical composition for treating and/or preventing a tumor treatable with endocrine therapy, said composition comprising the aforesaid compound or a pharmaceutically acceptable salt thereof, characterized by being to be used in combination with endocrine therapy, as well as a compound, a use, a method and a combination each relating thereto.
