Cristina R. Antonescu, MD My sarcoma research laboratory is dedicated to the detection and molecular characterization of diagnostic and prognostic markers in soft tissue sarcomas. Our current research is focused on 4 areas: (1) KIT oncogenic signaling in the pathogenesis of GIST and mechanisms of drug resistance to targeted kinase inhibitor therapies; (2) oncogenic signaling in angiosarcoma, with the characterization of KDR (VEGFR2) activating mutations in breast angiosarcoma and MYC/FLT4 gene amplifications in radiation-associated angiosarcoma; (3) fusion gene discovery and fusion transcript characterization in diagnosis and prognosis of soft tissue tumors; and (4) establishing genetically engineered sarcoma models using CRISPR-cas9 methodology for investigating the step-wise pathogenesis of translocation-associated sarcomas and generate faithful preclinical models for in vitro drug testing.