FMC63 scFv recognizes only human CD19; engineered human T cells not modelable in animals
“Since the anti-CD19 scFv utilized for KTE-C19 does only recognize human CD19, a murine surrogate was engineered for non-clinical proof-of-concept studies in immune competent mice.”
Yes: anti-murine CD19 CAR (1D3 scFv) in murine T cells, syngeneic lymphoma mice
“This surrogate model used an anti-murine CD19 CAR construct that was similar to KTE-C19 with the exception of the scFv, which has been derived from the 1D3 mAb recognizing murine CD19.”