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UCLA Details Off-the-Shelf CAR-NKT Therapy With Preclinical Success in Metastatic Kidney Cancer

Engineered CD70-targeted NKT cells derived from stem cells were built to persist in solid tumors.

Overview

  • The Cell Reports Medicine study, published August 29, introduces AlloCAR70-NKT as an allogeneic, stem cell–derived invariant NKT cell therapy for renal cell carcinoma.
  • AlloCAR70-NKT cells express a CD70-directed CAR and are designed to resist immune rejection while remaining active within the tumor setting.
  • Preclinical tests in RCC cell lines, primary patient samples, and orthotopic and metastatic mouse xenografts showed robust anti-tumor activity.
  • The cells killed cancer through both CAR-mediated targeting and native NKT receptors, including in CD70-low tumors, and they remodeled the immunosuppressive tumor microenvironment.
  • The therapy depleted CD70-positive alloreactive host cells to enhance persistence and showed a favorable safety profile in models, with clinical evaluation still to come.