CSPG4 was highly expressed in multiple STS histotypes by in silico analysis and on all the 16 STS cell lines tested by flow cytometry. CSPG4-CAR.CIK displayed superior in vitro cytolytic activity against multiple STS histotypes as compared to paired unmodified control CIK....CSPG4-CAR.CIK significantly delayed or reversed tumor growth in vivo in three STS xenograft models (Leiomyosarcoma, UPS and Fibrosarcoma).