IFNG and cancer: Differences observed between patients in the IFNγ response to controls (PHA and medium only) under cytokine conditioning was conserved and similar to the one observed without cytokine conditioning (Additional file 1: Figure S1A–D) In general, circulating lymphocytes from patients with cancer responded very well to cytokine conditioning, marked by an increase in IFNγ production (Fig. 3 a, b and Additional file 1: Figure S1C, D).