A method for in vitro predicting survival and/or metastatic outcome of gastrointestinal stromal tumors (GISTs), characterized in that it comprises the measure of the level, in a patient-derived biological sample of GIST, of a pool of polypeptides or polynucleotides consisting in Aurora kinase A (AURKA); a kit for the in vitro prediction of the survival outcome of a patient suffering from GIST, and/or the development of metastases in a patient treated for or suffering from GIST, and/or the prediction of the efficacy of a treatment for GIST, characterized in that it comprises means for detecting and/or quantify, in a sample, AURKA expression or level, and means for the calculation of the GI; and a method for screening for compounds for the use in the treatment of GISTs and to an AURKA inhibitor for its use in the treatment of GISTs.
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