The invention provides a Natural Killer Cell, which may be a NK92 cell that is modified to express one or more types of Chimeric Antigen Receptor (CAR) on its surface, and administering said cell to a subject for a cancer treatment. Said engineered CAR comprises an antigen binding domain, which may bind CD19 or GD2, a transmembrane domain, a co-stimulatory signaling region, which may be all or a portion or variant of 2B4, and a signaling domain, which may be all or a portion or variant of CD3ζ.
