Contemplated treatment compositions and methods are directed to co-administration of sensitized genetically modified NK cells and recombinant IL-12, wherein the genetically modified NK cells were preferably sensitized by constitutive exposure to IL-2 and wherein the IL-12 is expressed from a recombinant virus or given as an IL-12-antibody conjugate. Such treatment increases IFNγ secretion by the sensitized NK cells, and advantageously also increases expression of NKG2D.
