The current invention is based on a pan FGFR inhibitor for use in the treatment of cancer in a subject, wherein the subject is one for whom the sum of FGFR1, FGFR2 and/ or FGFR3 mRNA in a tumor tissue sample from the subject has been found to be overexpressed.本發明係關於一種用於治療個體癌症之泛FGFR抑制劑,其中該個體為已發現來自個體之腫瘤組織樣品中FGFR1、FGFR2及/或FGFR3 mRNA之總和係過度表現的個體。