The invention describes a CAR which recognizes CD30 as a target antigen and initiates lysis of CD30-positive (CD30+) tumor cells but not of CD30+ healthy cells like hematopoietic stem cells. Specific genetic modifications of the anti-CD30 CAR ensure the specific targeting of CD30+ tumor cells and prevent unwanted side-effects. This approach has been tested in vitro with CD30+ hematopoietic stem cells and CD30+ tumor cells and in vivo in mice transplanted with human CD30+ hematopoietic stem cells. In vivo experiments provided evidence that the treatment with anti-CD30 T-cells has no unwanted impact on the endogenous immune system. Thus, the CAR is most suitable for clinical application in targeting CD30+ leukemia and lymphoma cells. A clinical study phase I is planned for early 2016, indication: cutaneous T-cell lymphoma.
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Dipl.-Ing. Alfred Schillert
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