A partial response (PR) was achieved in all remaining patients (1, 3, 4, and 5) after 30 days of dasatinib treatment, based on commonly used response criteria...Among the 4 patients that responded to dasatinib in the clinical part of this study, two harbored G17V RHOA mutations and one exhibited VAV1 mutations. These 3 patients' responses support our hypothesis that dasatinib is a candidate drug to treat tumors harboring G17V RHOA mutations.