In one study, Oelsner and co-workers [83] compared the cytotoxic effects of CAR-CD19-CD3ζ-NK-92, CAR-CD19-CD28-CD3ζ-NK-92, and CAR-CD19-CD137-CD3ζ-NK-92 on established B-cell leukemia and lymphoma cells. Here, CD247 is linked to lymphoma.